Anti-Lock Braking System (ABS) - Except Lancer Evolution — Mitsubishi Lancer Evolution X (2007-2016)

SERVICE SPECIFICATIONS

Item	Standard value
Wheel speed sensor current mA	5.9 - 8.4 or 11.8 - 16.8
Wheel speed sensor insulation resistance Mohms	5 or more

SERVICE SPECIFICATIONS

INTRODUCTION

The ABS operates differently from conventional brake systems. These differences include sounds, sensations, and vehicle performance that owners and service technicians who are not familiar with ABS may not be used to.

Some operational characteristics may seem to be malfunctions, but they are simply signs of normal ABS operation. When diagnosing the ABS system, keep these operational characteristics in mind. Inform the owner of the kind of performance characteristics to expect from an ABS-equipped vehicle.

ABS DIAGNOSTIC TROUBLE CODE DETECTION CONDITIONS

ABS diagnostic trouble codes (ABS DTCs) are set under different conditions, depending on the malfunction detected. Most ABS DTCs will only be set during vehicle operation. Some ABS DTCs will also be set during the ABS self-check immediately after the engine is started.

When you check if an ABS DTC will be displayed again after the DTC has been erased, you should duplicate the ABS DTC set conditions. Depending on the detection timing and set conditions for the specific ABS DTC, you must either drive the vehicle or turn the engine off and restart it. To set the proper conditions for that DTC again, refer to "ABS DTC SET CONDITIONS" for each ABS DTC that you are trying to reset.

ABS DIAGNOSTIC TROUBLESHOOTING STRATEGY

Use these steps to plan your diagnostic strategy. If you follow them carefully, you will be sure that you have exhausted most of the possible ways to find an ABS fault.

Gather information about the problem from the customer.
Verify that the condition described by the customer exists.
Check the vehicle for any ABS DTC.
If you cannot verify the condition and there are no ABS DTCs, the malfunction is intermittent. Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) .
If you can verify the condition but there are no ABS DTCs, or the system cannot communicate with the scan tool, check that the basic brake system is operating properly. If the basic brake system is not operating properly, refer to the «BASIC BRAKE SYSTEM DIAGNOSIS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/mechanical-hydraulic/#basic-brake-system-except-lancer-evolution) . If the basic brake system is operating properly, refer to «BRAKE BOOSTER OPERATING CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/mechanical-hydraulic/#basic-brake-system-except-lancer-evolution) .
If there is an ABS DTC, record the number of the DTC, then erase the DTC from the memory using the scan tool.
Recreate the ABS DTC set conditions to see if the same ABS DTC will set again. If the same ABS DTC sets again, perform the diagnostic procedures for the DTC. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__diagnostic-trouble-code-chart) . If you cannot get the same ABS DTC to set again, the malfunction is intermittent. Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) .

ABS WARNING LIGHT AND BRAKE WARNING LIGHT CHECK

Check that ABS and brake warning lights illuminate as follows.

Note. The EBD warning light is also used as the brake warning light.

Scheme 71

Scheme 71: ABS WARNING LIGHT AND BRAKE WARNING LIGHT CHECK

When the ignition switch is turned to the ON position, ABS and brake warning lights illuminate.
The ABS and brake warning lights illuminate for three seconds *1 and then turn OFF *2 .
Otherwise, check the diagnostic trouble code. NOTE: *1 : The ABS warning light may stay ON until the vehicle speed reaches 6 mph (10 km/h). As far as ABS-ECU stores any diagnostic trouble code related to the wheel speed sensor malfunction or the motor malfunction as past trouble, ABS-ECU continues illuminating the ABS warning light until it verifies that the malfunction for that code is resolved (startup check). *2 : The brake warning light does not turn OFF when the parking brake is applied or the brake fluid level is lowered.

CHECK OF FREEZE FRAME DATA

The freeze frame data can be checked by using the scan tool.

When detecting fault and storing the diagnostic trouble code, the ECU connected to CAN bus line obtains the data before the determination of the diagnostic trouble code and the data when the diagnostic trouble code is determined, and then stores the ECU status of that time. By analyzing each data from scan tool, the troubleshooting can be performed more efficiently. The displayed items are as the table below.

Item No.	Item name	Content	Unit
1	Odometer	Total driving distance after the diagnostic trouble code is generated	Mile
2	Ignition cycle	Number of times the ignition switch is turned "ON" or "LOCK (OFF)" after the past failure transition	Number of counts is displayed.
4	Accumulated minute	Cumulative time for current malfunction of diagnostic trouble code	Min
5	Power supply voltage	Voltage of power supply when the diagnostic trouble code is generated	V
13	Stop light switch	Stop light switch condition when the diagnostic trouble code is generated :OFF/ON
301	ABS control	ABS control when the diagnostic trouble code is generated :OFF/ON
401	FL wheel speed sensor	Wheel speed (FL) when the diagnostic trouble code is generated	Mph
402	FR wheel speed sensor	Wheel speed (FR) when the diagnostic trouble code is generated	Mph
403	RL wheel speed sensor	Wheel speed (RL) when the diagnostic trouble code is generated	Mph
404	RR wheel speed sensor	Wheel speed (RR) when the diagnostic trouble code is generated	Mph

DISPLAY ITEM LIST

FAIL-SAFE FUNCTION

If any malfunction is detected by the self-diagnostic function, ABS-ECU illuminates the ABS warning light and brake warning light*, and it disables ABS and EBD control.

Note. *: The brake warning light and display are used as EBD control warning light.

DTC	Item		Countermeasures for failure
DTC	Item		Brake warning light	Brake warning display	ABS warning light	ABS warning display
C100A	Abnormality in FL wheel speed sensor circuit		Extinguished (2)	Extinguished (2)	Illuminated (3)	Illuminated (3)
C1015	Abnormality in FR wheel speed sensor circuit
C1020	Abnormality in RL wheel speed sensor circuit
C102B	Abnormality in RR wheel speed sensor circuit
C1011	Abnormality in FL wheel speed sensor signal		Extinguished (2)	Extinguished (2)	Illuminated (3)	Illuminated (3)
C101C	Abnormality in FR wheel speed sensor signal
C1027	Abnormality in RL wheel speed sensor signal
C1032	Abnormality in RR wheel speed sensor signal
C1014	Mutual monitoring of FL wheel speed sensor		Extinguished (2)	Extinguished (2)	Illuminated (3)	Illuminated (3)
C101F	Mutual monitoring of FR wheel speed sensor
C102A	Mutual monitoring of RL wheel speed sensor
C1035	Mutual monitoring of RR wheel speed sensor
C1041	Abnormality in periodical signal for FL wheel speed sensor		Extinguished (2)	Extinguished (2)	Illuminated (3)	Illuminated (3)
C1042	Abnormality in periodical signal for FR wheel speed sensor
C1043	Abnormality in periodical signal for RL wheel speed sensor
C1044	Abnormality in periodical signal for RR wheel speed sensor
C1046	FL wheel speed sensor control phase time exceeded		Extinguished (2)	Extinguished (2)	Illuminated (3)	Illuminated (3)
C1047	FR wheel speed sensor control phase time exceeded
C1048	RL wheel speed sensor control phase time exceeded
C1049	RR wheel speed sensor control phase time exceeded
C104B	Abnormality in FL wheel inlet valve system		Illuminates	Illuminates	Illuminates	Illuminates
C104F	Abnormality in FR wheel inlet valve system
C1053	Abnormality in RL wheel inlet valve system
C1057	Abnormality in RR wheel inlet valve system
C105F	Abnormality in FL wheel outlet valve system		Illuminates	Illuminates	Illuminates	Illuminates
C1063	Abnormality in FR wheel outlet valve system
C1067	Abnormality in RL wheel outlet valve system
C105B	Abnormality in RR wheel outlet valve system
C2104	Malfunction of valve power supply circuit		Illuminates	Illuminates	Illuminates	Illuminates
C1073	Malfunction of motor drive circuit		Extinguished	Extinguished	Illuminated (3)	Illuminated (3)
C2116	Abnormality in pump motor power supply voltage		Extinguished	Extinguished	Illuminated (3)	Illuminated (3)
C1000	Abnormality in stop light switch circuit		Extinguished	Extinguished	Extinguished	Extinguished
C2200	Trouble in ABS-ECU		Illuminates	Illuminates	Illuminates	Illuminates
C2100	Battery voltage problem (low voltage)	9.7 ± 0.3 V or less (1)	Extinguished	Extinguished	Illuminates	Illuminates
C2100	Battery voltage problem (low voltage)	8.0 ± 0.5 V or less (1)	Illuminates	Illuminates	Illuminates	Illuminates
C2101	Battery voltage problem (high voltage)	18.0 ± 1.0 V or more	Illuminates	Illuminates	Illuminates	Illuminates
C1395	Brake fluid charging incompletion		Extinguished	Extinguished	Flashes (1 Hz)	Illuminates
C2203	VIN not written		Extinguished	Extinguished	Illuminates	Illuminates
C1608	Implausible diagnosis data		Extinguished	Extinguished	Extinguished	Extinguished
U0001	Bus off		Extinguished	Extinguished	Extinguished	Extinguished
U0100	Engine time-out error		Extinguished	Extinguished	Extinguished	Extinguished
U0141	ETACS time-out error		Extinguished	Extinguished	Extinguished	Extinguished
U1415	Variant coding not implemented		Extinguished	Extinguished	Illuminates	Illuminates
U1417	Invalid variant coding value (including wrong assembly)		Extinguished	Extinguished	Illuminates	Illuminates
(1) This diagnostic trouble code is not set within the vehicle speed of 12 mph (20 km/h) or less. (2) Turns ON when two or more wheels are faulty. (3) Stays ON until the vehicle speed reaches 6 mph (10 km/h) when the ignition switch is turned to ON next time, even if the malfunction is repaired and returns to normal condition.

(1)	This diagnostic trouble code is not set within the vehicle speed of 12 mph (20 km/h) or less.

(2)	Turns ON when two or more wheels are faulty.

(3)	Stays ON until the vehicle speed reaches 6 mph (10 km/h) when the ignition switch is turned to ON next time, even if the malfunction is repaired and returns to normal condition.

ILLUMINATION CONDITION OF WARNING LIGHT AND DISPLAY IN CASE OF FAILURE

DTC	Item		Countermeasures for failure
DTC	Item		EBD control	ABS control
C100A	Abnormality in FL wheel speed sensor circuit		Executed (3)	Prohibited
C1015	Abnormality in FR wheel speed sensor circuit
C1020	Abnormality in RL wheel speed sensor circuit
C102B	Abnormality in RR wheel speed sensor circuit
C1011	Abnormality in FL wheel speed sensor signal		Executed (3)	Prohibited
C101C	Abnormality in FR wheel speed sensor signal
C1027	Abnormality in RL wheel speed sensor signal
C1032	Abnormality in RR wheel speed sensor signal
C1014	Mutual monitoring of FL wheel speed sensor		Executed (3)	Prohibited
C101F	Mutual monitoring of FR wheel speed sensor
C102A	Mutual monitoring of RL wheel speed sensor
C1035	Mutual monitoring of RR wheel speed sensor
C1041	Abnormality in periodical signal for FL wheel speed sensor		Executed (3)	Prohibited
C1042	Abnormality in periodical signal for FR wheel speed sensor
C1043	Abnormality in periodical signal for RL wheel speed sensor
C1044	Abnormality in periodical signal for RR wheel speed sensor
C1046	FL wheel speed sensor control phase time exceeded		Executed (3)	Prohibited
C1047	FR wheel speed sensor control phase time exceeded
C1048	RL wheel speed sensor control phase time exceeded
C1049	RR wheel speed sensor control phase time exceeded
C104B	Abnormality in FL wheel inlet valve system		Prohibited	Prohibited
C104F	Abnormality in FR wheel inlet valve system
C1053	Abnormality in RL wheel inlet valve system
C1057	Abnormality in RR wheel inlet valve system
C105F	Abnormality in FL wheel outlet valve system		Prohibited	Prohibited
C1063	Abnormality in FR wheel outlet valve system
C1067	Abnormality in RL wheel outlet valve system
C105B	Abnormality in RR wheel outlet valve system
C2104	Malfunction of valve power supply circuit		Prohibited	Prohibited
C1073	Malfunction of motor drive circuit		Executed	Prohibited
C2116	Abnormality in pump motor power supply voltage		Executed	Prohibited
C1000	Abnormality in stop light switch circuit		Executed	Executed
C2200	Trouble in ABS-ECU		Prohibited (2)	Prohibited (2)
C2100	Battery voltage problem (low voltage)	9.7 ± 0.3 V or less (1)	Executed	Prohibited
C2100	Battery voltage problem (low voltage)	8.0 ± 0.5 V or less (1)	Prohibited	Prohibited
C2101	Battery voltage problem (high voltage)	18.0 ± 1.0 V or more	Prohibited	Prohibited
C1395	Brake fluid charging incompletion		Executed	Executed
C2203	VIN not written		Executed	Executed
C1608	Implausible diagnosis data		Executed	Executed
U0001	Bus off		Executed	Executed
U0100	Engine time-out error		Executed	Executed
U0141	ETACS time-out error		Executed	Executed
U1415	Variant coding not implemented		Executed	Prohibited
U1417	Invalid variant coding value (including wrong assembly)		Executed	Prohibited
(1) This diagnostic trouble code is not set within the vehicle speed of 12 mph (20 km/h) or less. (2) Not prohibited when the brake warning lamp is not illuminated. (3) Prohibited when two or more wheels are faulty.

(1)	This diagnostic trouble code is not set within the vehicle speed of 12 mph (20 km/h) or less.

(2)	Not prohibited when the brake warning lamp is not illuminated.

(3)	Prohibited when two or more wheels are faulty.

UNDER EBD AND ABS CONTROL IN CASE OF FAILURE

HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

CAUTION

To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.

Scheme 72

Ensure that the ignition switch is at the "LOCK" (OFF) position.
Start up the personal computer.
Connect special tool MB991827 to special tool MB991824 and the personal computer.
Connect special tool MB991910 to the special tool MB991824.
Connect special tool MB991910 to the data link connector.
Turn the power switch special tool MB991824 to the "ON" position. NOTE: When the special tool MB991824 is energized, the special tool MB991824 indicator light will be illuminated in a green color.
Start the M.U.T.-III system on the personal computer. NOTE: Disconnect the scan tool MB991958 in the reverse order of the connecting sequence, making sure that the ignition switch is at the "LOCK" (OFF) position.

HOW TO READ AND ERASE DIAGNOSTIC TROUBLE CODES

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

CAUTION

To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.

Note. If the battery voltage is low, diagnostic trouble codes will not be set. Check the battery if scan tool MB991958 does not display.

Connect scan tool MB991958 to the data link connector.
Turn the ignition switch to the "ON" position.
Select "System Select."
Select "ABS/ASC/ASTC" from the system list, and select the "OK" button.
Select "Diagnostic Trouble Code."
If a DTC is set, it is shown.
Choose "DTC erase" to erase the DTC.

HOW TO READ DATA LIST

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

CAUTION

To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.

Connect scan tool MB991958 to the data link connector.
Turn the ignition switch to the "ON" position.
Select "System Select."
Select "ABS/ASC/ASTC" from the system list, and select the "OK" button.
Select "Data List."

HOW TO PERFORM ACTUATOR TEST

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

CAUTION

To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.

Connect scan tool MB991958 to the data link connector.
Turn the ignition switch to the "ON" position.
Select "System Select."
Select "ABS/ASC/ASTC" from the system list, and select the "OK" button.
Choose "Actuator Test" from "ABS" screen.
Choose an appropriate item and select the "OK" button.

DIAGNOSTIC TROUBLE CODE CHART

CAUTION

During diagnosis, a DTC code associated with other systems may be set when the ignition switch is turned on with connector(s) disconnected. On completion, check all systems for DTCs. If DTC code(s) are set, erase them all.

DTC	Inspection item
C100A	Abnormality in FL wheel speed sensor circuit
C1015	Abnormality in FR wheel speed sensor circuit
C1020	Abnormality in RL wheel speed sensor circuit
C102B	Abnormality in RR wheel speed sensor circuit
C1011	Abnormality in FL wheel speed sensor signal
C101C	Abnormality in FR wheel speed sensor signal
C1027	Abnormality in RL wheel speed sensor signal
C1032	Abnormality in RR wheel speed sensor signal
C1014	Mutual monitoring of FL wheel speed sensor
C101F	Mutual monitoring of FR wheel speed sensor
C102A	Mutual monitoring of RL wheel speed sensor
C1035	Mutual monitoring of RR wheel speed sensor
C1041	Abnormality in periodical signal for FL wheel speed sensor
C1042	Abnormality in periodical signal for FR wheel speed sensor
C1043	Abnormality in periodical signal for RL wheel speed sensor
C1044	Abnormality in periodical signal for RR wheel speed sensor
C1046	FL wheel speed sensor control phase time exceeded
C1047	FR wheel speed sensor control phase time exceeded
C1048	RL wheel speed sensor control phase time exceeded
C1049	RR wheel speed sensor control phase time exceeded
C104B	Abnormality in FL wheel inlet valve system
C104F	Abnormality in FR wheel inlet valve system
C1053	Abnormality in RL wheel inlet valve system
C1057	Abnormality in RR wheel inlet valve system
C105F	Abnormality in FL wheel outlet valve system
C1063	Abnormality in FR wheel outlet valve system
C1067	Abnormality in RL wheel outlet valve system
C105B	Abnormality in RR wheel outlet valve system
C2104	Malfunction of valve power supply circuit
C1073	Malfunction of motor drive circuit
C2116	Abnormality in pump motor power supply voltage
C1000	Abnormality in stop light switch circuit
C2200	Abnormality in ABS-ECU
C2100	Abnormality in battery voltage (low voltage)	9.7 ± 0.3 V or less (1)
C2100	Abnormality in battery voltage (low voltage)	8.0 ± 0.5 V or less (1)
C2101	Abnormality in battery voltage (high voltage)	18.0 ± 1.0 V or more
C1395	Brake fluid filling not completed
C2203	VIN not recorded
C1608	Implausible diagnosis data
U0001	Bus-off
U0100	Engine time-out error
U0141	ETACS time-out error
U1415	Variant coding not implemented
U1417	Invalid variant coding value (including wrong assembly)
(1) This diagnostic trouble code is not set within the vehicle speed of 12 mph (20 km/h) or less.

(1)	This diagnostic trouble code is not set within the vehicle speed of 12 mph (20 km/h) or less.

DIAGNOSTIC TROUBLE CODE CHART

Scheme 73

Scheme 73: DTC C100A: Abnormality in FL wheel speed sensor circuit

CAUTION

CIRCUIT OPERATION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

DTC SET CONDITIONS

ABS-ECU monitors the voltage fluctuation in each wheel speed sensor circuit. If ABS-ECU detects the open or short circuit in the circuit, it will set a DTC.

Current trouble

Damaged wiring harness and connectors
Noise interference
Malfunction of wheel speed sensor
Malfunction of ABS-ECU

Past trouble

Carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).

DIAGNOSIS

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A
MB991974: ABS check harness

Scheme 74

Scheme 75

Scheme 76

STEP 1. Using scan tool MB991958, diagnose the CAN bus line. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is the DTC C100A set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Scan tool data list Check the following data list (Refer to «DATA LIST REFERENCE TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__data-list-reference-table) ). Item No.01: FL wheel speed sensor Q: Is the check result normal? YES: Go to Step 12 . NO: Go to Step 4.
STEP 4. Voltage measurement at the A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the voltage at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Turn the ignition switch to the ON position. Measure the voltage between the front wheel speed sensor (LH) power supply terminal (signal terminal) No. 18 and body ground, and between the ground terminal No. 19 and body ground. OK: 1 V or less Q: Is the check result normal? YES: Go to Step 5. NO (Not normal at the terminal No. 18 or 19): Go to Step 6 .
STEP 5. Resistance measurement at A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the resistance between the front wheel speed sensor (LH) power supply terminal (signal terminal) No. 18 and body ground, and between the ground terminal No. 19 and body ground. OK: No continuity Q: Is the check result normal? YES: Go to Step 8 . NO (Not normal at the terminal No. 18 or 19): Go to Step 6.
STEP 6. Connector check: A-03 ABS-ECU connector, A-07 front wheel speed sensor (LH) connector Q: Is the check result normal? YES: Go to Step 7. NO: Repair the defective connector. Then go to Step 13 .
STEP 7. Wiring harness check between A-03 ABS-ECU connector terminal No. 18 and A-07 front wheel speed sensor (LH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 19 and A-07 front wheel speed sensor (LH) connector terminal No. 2. Check for short circuit in front wheel speed sensor (LH) circuit Q: Is the check result normal? YES: Replace the wheel speed sensor < FL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13 . NO: Repair the wiring harness. Then go to Step 13 .
STEP 8. Voltage measurement at the A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the ABS-ECU-side connector and harness-side connector, and then measure the voltage at the special tool connector side. Turn the ignition switch to the ON position. Measure the voltage between the front wheel speed sensor (LH) power supply terminal (signal terminal) No. 18 and body ground, and between the ground terminal No. 19 and body ground. OK: Terminal No. 18 and body ground: Battery positive voltage Terminal No. 19 and body ground: 1 volt or less Q: Is the check result normal? YES: Go to Step 9. NO: Go to Step 11 .
STEP 9. Wiring harness check between A-03 ABS-ECU connector terminal No. 18 and A-07 front wheel speed sensor (LH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 19 and A-07 front wheel speed sensor (LH) connector terminal No. 2. Check for open circuit in front wheel speed sensor (LH) circuit Q: Is the check result normal? YES: Go to Step 10. NO: Repair the wiring harness. Then go to Step 13 .
STEP 10. Check for wheel speed sensor < FL > as a single unit Refer to «WHEEL SPEED SENSOR CURRENT CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-current-check) . Q: Is the check result normal? YES: Go to Step 11. NO: Replace the wheel speed sensor < FL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13 .
STEP 11. Connector check: A-03 ABS-ECU connector, A-07 front wheel speed sensor (LH) connector Q: Is the check result normal? YES: Go to Step 12. NO: Repair the defective connector. Then go to Step 13 .
STEP 12. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C100A set? YES: Replace the hydraulic unit (integrated with ABC-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 13. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C100A set? YES: Return to Step 1 . NO: The procedure is complete.

Scheme 77

Scheme 77: DTC C1015: Abnormality in FR front wheel speed sensor (RH) circuit front wheel speed sensor (RH)

CAUTION

If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to DIAGNOSTIC TROUBLE CODE DIAGNOSIS ). Whenever ECU is replaced, ensure that the CAN bus lines are normal.

The front wheel speed sensor (RH) is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and front wheel speed sensor (RH)s. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the front wheel speed sensor (RH) creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ABS-ECU monitors the voltage fluctuation in each front wheel speed sensor (RH) circuit. If ABS-ECU detects the open or short circuit in the circuit, it will set a DTC.

Damaged wiring harness and connectors
Noise interference
Malfunction of front wheel speed sensor (RH)
Malfunction of ABS-ECU

Carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the front wheel speed sensor (RH). For diagnosis procedures, refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A
MB991974: ABS check harness

Scheme 78

Scheme 79

Scheme 80

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is the DTC C1015 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the data list Check the following service data (Refer to «DATA LIST REFERENCE TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__data-list-reference-table) ). Item No.02: FR wheel speed sensor Q: Is the check result normal? YES: Go to Step 12 . NO: Go to Step 4.
STEP 4. Voltage measurement at the A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the voltage at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Turn the ignition switch to the ON position. Measure the voltage between the front wheel speed sensor (RH) power supply terminal (signal terminal) No. 22 and body ground, and between the ground terminal No. 21 and body ground. OK: 1 V or less Q: Is the check result normal? YES: Go to Step 5. NO (Not normal at the terminal No. 22 or 21): Go to Step 6 .
STEP 5. Resistance measurement at A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the resistance between the front wheel speed sensor (RH) power supply terminal (signal terminal) No. 22 and body ground, and between the ground terminal No. 21 and body ground. OK: No continuity Q: Is the check result normal? YES: Go to Step 8 . NO (Not normal at the terminal No. 22 or 21): Go to Step 6.
STEP 6. Connector check: A-03 ABS-ECU connector, A-02 front wheel speed sensor (RH) connector Q: Is the check result normal? YES: Go to Step 7. NO: Repair the defective connector. Then go to Step 13 .
STEP 7. Wiring harness check between A-03 ABS-ECU connector terminal No. 22 and A-02 front wheel speed sensor (RH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 21 and A-02 front wheel speed sensor (RH) connector terminal No. 2. Check for short circuit in front wheel speed sensor (RH) circuit Q: Is the check result normal? YES: Replace the wheel speed sensor < FR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13 . NO: Repair the wiring harness. Then go to Step 13 .
STEP 8. Voltage measurement at the A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the ABS-ECU-side connector and harness-side connector, and then measure the voltage at the special tool connector side. Turn the ignition switch to the ON position. Measure the voltage between the front wheel speed sensor (RH) power supply terminal (signal terminal) No. 22 and body ground, and between the ground terminal No. 21 and body ground. OK: Terminal No. 22 and body ground: Battery positive voltage Terminal No. 21 and body ground: 1 volt or less Q: Is the check result normal? YES: Go to Step 9. NO: Go to Step 11 .
STEP 9. Wiring harness check between A-03 ABS-ECU connector terminal No. 22 and A-02 front wheel speed sensor (RH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 21 and A-02 front wheel speed sensor (RH) connector terminal No. 2. Check for open circuit in front wheel speed sensor (RH) circuit Q: Is the check result normal? YES: Go to Step 10. NO: Repair the wiring harness. Then go to Step 13 .
STEP 10. Check for wheel speed sensor < FR > as a single unit Refer to «WHEEL SPEED SENSOR CURRENT CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-current-check) . Q: Is the check result normal? YES: Go to Step 11. NO: Replace the wheel speed sensor < FR >. Then go to Step 13 .
STEP 11. Connector check: A-03 ABS-ECU connector, A-02 front wheel speed sensor (RH) connector Q: Is the check result normal? YES: Go to Step 12. NO: Repair the defective connector. Then go to Step 13 .
STEP 12. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1015 set? YES: Replace the hydraulic unit (integrated with ABC-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 13. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1015 set? YES: Return to Step 1 . NO: The procedure is complete.

Scheme 81

Scheme 81: DTC C1020: Abnormality in RL wheel speed sensor circuit

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ABS-ECU monitors the voltage fluctuation in each wheel speed sensor circuit. If ABS-ECU detects the open or short circuit in the circuit, it will set a DTC.

Damaged wiring harness and connectors
Noise interference
Malfunction of wheel speed sensor
Malfunction of ABS-ECU

Carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A
MB991974: ABS check harness

Scheme 82

Scheme 83

Scheme 84

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is the DTC C1020 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the data list Check the following service data (Refer to «DATA LIST REFERENCE TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__data-list-reference-table) ). Item No.03: RL wheel speed sensor Q: Is the check result normal? YES: Go to Step 12 . NO: Go to Step 4.
STEP 4. Voltage measurement at the A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the voltage at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Turn the ignition switch to the ON position. Measure the voltage between the rear wheel speed sensor (LH) power supply terminal (signal terminal) No. 24 and body ground, and between the ground terminal No. 25 and body ground. OK: 1 V or less Q: Is the check result normal? YES: Go to Step 5. NO (Not normal at the terminal No. 24 or 25): Go to Step 6 .
STEP 5. Resistance measurement at A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the resistance between the rear wheel speed sensor (LH) power supply terminal (signal terminal) No. 24 and body ground, and between the ground terminal No. 25 and body ground. OK: No continuity Q: Is the check result normal? YES: Go to Step 8 . NO (Not normal at the terminal No. 24 or 25): Go to Step 6.
STEP 6. Connector check: A-03 ABS-ECU connector, C-39 and D-15 intermediate connector, F-21 rear wheel speed sensor (LH) connector Q: Is the check result normal? YES: Go to Step 7. NO: Repair the defective connector. Then go to Step 13 .
STEP 7. Wiring harness check between A-03 ABS-ECU connector terminal No. 24 and F-21 rear wheel speed sensor (LH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 25 and F-21 rear wheel speed sensor (LH) connector terminal No. 2. Check for short circuit in rear wheel speed sensor (LH) circuit Q: Is the check result normal? YES: Replace the wheel speed sensor < RL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13 . NO: Repair the wiring harness. Then go to Step 13 .
STEP 8. Voltage measurement at the A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the ABS-ECU-side connector and harness-side connector, and then measure the voltage at the special tool connector side. Turn the ignition switch to the ON position. Measure the voltage between the rear wheel speed sensor (LH) power supply terminal (signal terminal) No. 24 and body ground, and between the ground terminal No. 25 and body ground. OK: Terminal No. 24 and body ground: Battery positive voltage Terminal No. 25 and body ground: 1 V or less Q: Is the check result normal? YES: Go to Step 9. NO: Go to Step 11 .
STEP 9. Wiring harness check between A-03 ABS-ECU connector terminal No. 24 and F-21 rear wheel speed sensor (LH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 25 and F-21 rear wheel speed sensor (LH) connector terminal No. 2. Check for open circuit in rear wheel speed sensor (LH) circuit Q: Is the check result normal? YES: Go to Step 10. NO: Repair the wiring harness. Then go to Step 13 .
STEP 10. Check for wheel speed sensor < RL > as a single unit Refer to «WHEEL SPEED SENSOR CURRENT CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-current-check) . Q: Is the check result normal? YES: Go to Step 11. NO: Replace the wheel speed sensor < RL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13 .
STEP 11. Connector check: A-03 ABS-ECU connector, C-39 and D-15 intermediate connector, F-21 rear wheel speed sensor (LH) connector Q: Is the check result normal? YES: Go to Step 12. NO: Repair the defective connector. Then go to Step 13 .
STEP 12. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1020 set? YES: Replace the hydraulic unit (integrated with ABC-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 13. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1020 set? YES: Return to Step 1 . NO: The procedure is complete.

Scheme 85

Scheme 85: DTC C102B: Abnormality in RR wheel speed sensor circuit

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ABS-ECU monitors the voltage fluctuation in each wheel speed sensor circuit. If ABS-ECU detects the open or short circuit in the circuit, it will set a DTC.

Damaged wiring harness and connectors
Noise interference
Malfunction of wheel speed sensor
Malfunction of ABS-ECU

Carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A
MB991974: ABS check harness

Scheme 86

Scheme 87

Scheme 88

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is the DTC C102B set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the data list Check the following data list (Refer to «DATA LIST REFERENCE TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__data-list-reference-table) ). Item No.04: RR wheel speed sensor Q: Is the check result normal? YES: Go to Step 12 . NO: Go to Step 4.
STEP 4. Voltage measurement at the A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the voltage at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Turn the ignition switch to the ON position. Measure the voltage between the rear wheel speed sensor (RH) power supply terminal (signal terminal) No. 16 and body ground, and between the ground terminal No. 15 and body ground. OK: 1 V or less Q: Is the check result normal? YES: Go to Step 5. NO (Not normal at the terminal No. 16 or 15): Go to Step 6 .
STEP 5. Resistance measurement at A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the resistance between the rear wheel speed sensor (RH) power supply terminal (signal terminal) No. 16 and body ground, and between the ground terminal No. 15 and body ground. OK: No continuity Q: Is the check result normal? YES: Go to Step 8 . NO (Not normal at the terminal No. 16 or 15): Go to Step 6.
STEP 6. Connector check: A-03 ABS-ECU connector, C-39 and D-11 intermediate connector, F-02 rear wheel speed sensor (RH) connector Q: Is the check result normal? YES: Go to Step 7. NO: Repair the defective connector. Then go to Step 13 .
STEP 7. Wiring harness check between A-03 ABS-ECU connector terminal No. 16 and F-02 rear wheel speed sensor (RH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 15 and F-02 rear wheel speed sensor (RH) connector terminal No. 2. Check for short circuit in rear wheel speed sensor (RH) circuit Q: Is the check result normal? YES: Replace the wheel speed sensor < RR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13 . NO: Repair the wiring harness. Then go to Step 13 .
STEP 8. Voltage measurement at the A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the ABS-ECU-side connector and harness-side connector, and then measure the voltage at the special tool connector side. Turn the ignition switch to the ON position. Measure the voltage between the rear wheel speed sensor (RH) power supply terminal (signal terminal) No. 16 and body ground, and between the ground terminal No. 15 and body ground. OK: Terminal No. 16 and body ground: Battery positive voltage Terminal No. 15 and body ground: 1 V or less Q: Is the check result normal? YES: Go to Step 9. NO: Go to Step 11 .
STEP 9. Wiring harness check between A-03 ABS-ECU connector terminal No. 16 and F-02 rear wheel speed sensor (RH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 15 and F-02 rear wheel speed sensor (RH) connector terminal No. 2. Check for open circuit in rear wheel speed sensor (RH) circuit Q: Is the check result normal? YES: Go to Step 10. NO: Repair the wiring harness. Then go to Step 13 .
STEP 10. Check for wheel speed sensor < RR > as a single unit Refer to «WHEEL SPEED SENSOR CURRENT CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-current-check) . Q: Is the check result normal? YES: Go to Step 11. NO: Replace the wheel speed sensor < RR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13 .
STEP 11. Connector check: A-03 ABS-ECU connector, C-39 and D-11 intermediate connector, F-02 rear wheel speed sensor (RH) connector Q: Is the check result normal? YES: Go to Step 12. NO: Repair the defective connector. Then go to Step 13 .
STEP 12. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C102B set? YES: Replace the hydraulic unit (integrated with ABC-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 13. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C102B set? YES: Return to Step 1 . NO: The procedure is complete.

Scheme 89

Scheme 89: DTC C1011: Abnormality in FL wheel speed sensor signal

CAUTION

If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to CAN BUS LINE DIAGNOSTIC FLOW ). Whenever ECU is replaced, ensure that the CAN bus lines are normal.

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ABS-ECU monitors the signals from each wheel speed sensor while the vehicle is being driven. If any fault below is found in these sensor signals, ABS-ECU will set the relevant DTC.

Irregular change in the wheel speed sensor signal
Wheel speed sensor signal continuously indicates high value.

Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Wheel bearing malfunction
Malfunction of wheel speed sensor
Damaged wiring harness and connectors
External noise interference
Improper installation of the wheel speed sensor
Deformation of the magnetic encoder for wheel speed detection
Malfunction of ABS-ECU
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
The number of poles on the magnetic encoder for wheel speed detection (the number of N-pole and S-pole) is changed.

When the DTC C100A is also set, carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).
When the DTC C100A is not set, the following conditions may be present: Some wheels slip Unstable vehicle attitude External noise interference Vehicle ran with the parking brake applied.

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

Scheme 90

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1011 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTC C100A is also set. Q: Is DTC C100A also set? YES: Perform the diagnosis for the DTC C100A (Refer to «DTC C100A: ABNORMALITY IN FL WHEEL SPEED SENSOR CIRCUIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: Go to Step 4.
STEP 4. Connector check: A-03 ABS-ECU connector, A-07 front wheel speed sensor (LH) connector Q: Is the check result normal? YES: Go to Step 5. NO: Repair the defective connector. Then go to Step 12 .
STEP 5. Wiring harness check between A-03 ABS-ECU connector terminal No. 18 and A-07 front wheel speed sensor (LH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 19 and A-07 front wheel speed sensor (LH) connector terminal No. 2. Q: Is the check result normal? YES: Go to Step 6. NO: Repair the wiring harness. Then go to Step 12 .
STEP 6. Check wheel speed sensor < FL > installation Check how the wheel speed sensor < FL > is installed (Disconnection of wheel speed sensor < FL >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 7. NO: Reinstall the wheel speed sensor < FL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 7.
STEP 7. Check for wheel speed sensor < FL > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 8. NO: Replace the wheel speed sensor < FL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 11 .
STEP 8. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < FL > and the wheel speed detection magnet encoder. Check the wheel bearing < FL > for looseness (Refer to «WHEEL BEARING PLAY CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution__wheel-bearing-end-play-check) ). Q: Is the check result normal? YES: Go to Step 9. NO: Replace the wheel bearing < FL > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 12 .
STEP 9. Check wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 10. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 12 . NO (Deformation): Replace the wheel bearing < FL > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 12 .
STEP 10. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1011 set? YES: Replace the wheel speed sensor < FL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 11. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 11. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1011 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 12. NO: The procedure is complete.
STEP 12. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1011 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C101C: Abnormality in FR wheel speed sensor signal

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ABS-ECU monitors the signals from each wheel speed sensor while the vehicle is being driven. If any fault below is found in these sensor signals, ABS-ECU will set the relevant DTC.

Irregular change in the wheel speed sensor signal
Wheel speed sensor signal continuously indicates high value.

Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Wheel bearing malfunction
Malfunction of wheel speed sensor
Damaged wiring harness and connectors
External noise interference
Improper installation of the wheel speed sensor
Deformation of the magnetic encoder for wheel speed detection
Malfunction of ABS-ECU
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
The number of poles on the magnetic encoder for wheel speed detection (the number of N-pole and S-pole) is changed.

When the DTC C1015 is also set, carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).
When DTC C1015 is not set, the following conditions may be present: Some wheels slip Unstable vehicle attitude External noise interference Vehicle ran with the parking brake applied.

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C101C set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTC C1015 is also set. Q: Is DTC C1015 also set? YES: Perform the diagnosis for the DTC C1015 (Refer to «DTC C1015: ABNORMALITY IN FR FRONT WHEEL SPEED SENSOR (RH) CIRCUIT FRONT WHEEL SPEED SENSOR (RH)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: Go to Step 4.
STEP 4. Connector check: A-03 ABS-ECU connector, A-02 front wheel speed sensor (RH) connector Q: Is the check result normal? YES: Go to Step 5. NO: Repair the defective connector. Then go to Step 12 .
STEP 5. Wiring harness check between A-03 ABS-ECU connector terminal No. 22 and A-02 front wheel speed sensor (RH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 21 and A-02 front wheel speed sensor (RH) connector terminal No. 2. Q: Is the check result normal? YES: Go to Step 6. NO: Repair the wiring harness. Then go to Step 12 .
STEP 6. Check wheel speed sensor < FR > installation Check how the wheel speed sensor < FR > is installed (Disconnection of wheel speed sensor < FR >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 7. NO: Reinstall the wheel speed sensor < FR > correctly (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 7.
STEP 7. Check for wheel speed sensor < FR > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 8. NO: Replace the wheel speed sensor < FR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 11 .
STEP 8. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < FR > and the wheel speed detection magnet encoder. Check the wheel bearing < FR > for looseness (Refer to «WHEEL BEARING PLAY CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution__wheel-bearing-end-play-check) ). Q: Is the check result normal? YES: Go to Step 9. NO: Replace the wheel bearing < FR > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 12 .
STEP 9. Check wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 10. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 12 . NO (Deformation): Replace the wheel bearing < FR > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 12 .
STEP 10. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C101C set? YES: Replace the wheel speed sensor < FR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 11. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 11. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C101C set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 12. NO: The procedure is complete.
STEP 12. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C101C set? YES: Return to Step 1 . NO: The procedure is complete.

Scheme 91

Scheme 91: DTC C1027: Abnormality in RL wheel speed sensor signal

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ABS-ECU monitors the signals from each wheel speed sensor while the vehicle is being driven. If any fault below is found in these sensor signals, ABS-ECU will set the relevant DTC.

Irregular change in the wheel speed sensor signal
Wheel speed sensor signal continuously indicates high value.

Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Wheel bearing malfunction
Malfunction of wheel speed sensor
Damaged wiring harness and connectors
External noise interference
Improper installation of the wheel speed sensor
Deformation of the magnetic encoder for wheel speed detection
Malfunction of ABS-ECU
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
The number of poles on the magnetic encoder for wheel speed detection (the number of N-pole and S-pole) is changed.

When the DTC C1020 is also set, carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).
When the DTC C1020 is not set, the following conditions may be present: Some wheels slip Unstable vehicle attitude External noise interference Vehicle ran with the parking brake applied.

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

Scheme 92

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1027 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTC C1020 is also set. Q: Is DTC C1020 also set? YES: Perform the diagnosis for the DTC C1020 (Refer to «DTC C1020: ABNORMALITY IN RL WHEEL SPEED SENSOR CIRCUIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: Go to Step 4.
STEP 4. Connector check: A-03 ABS-ECU connector, C-39 and D-15 intermediate connector, F-21 rear wheel speed sensor (LH) connector Q: Is the check result normal? YES: Go to Step 5. NO: Repair the defective connector. Then go to Step 12 .
STEP 5. Wiring harness check between A-03 ABS-ECU connector terminal No. 24 and F-21 rear wheel speed sensor (LH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 25 and F-21 rear wheel speed sensor (LH) connector terminal No. 2. Q: Is the check result normal? YES: Go to Step 6. NO: Repair the wiring harness. Then go to Step 12 .
STEP 6. Check wheel speed sensor < RL > installation Check how the wheel speed sensor < RL > is installed (Disconnection of wheel speed sensor < RL >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 7. NO: Reinstall the wheel speed sensor < RL > correctly (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 7.
STEP 7. Check for wheel speed sensor < RL > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 8. NO: Replace the wheel speed sensor < RL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 11 .
STEP 8. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < RL > and the wheel speed detection magnet encoder. Check the wheel bearing < RL > for looseness (Refer to «ON-VEHICLE SERVICE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Q: Is the check result normal? YES: Go to Step 9. NO: Replace the rear wheel hub assembly < RL > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 12 .
STEP 9. Check wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 10. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 12 . NO (Deformation): Replace the rear wheel hub assembly < RL > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 12 .
STEP 10. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1027 set? YES: Replace the wheel speed sensor < RL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 11. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 11. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1027 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 12. NO: The procedure is complete.
STEP 12. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1027 set? YES: Return to Step 1 . NO: The procedure is complete.

Scheme 93

Scheme 93: DTC C1032: Abnormality in RR wheel speed sensor signal

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ABS-ECU monitors the signals from each wheel speed sensor while the vehicle is being driven. If any fault below is found in these sensor signals, ABS-ECU will set the relevant DTC.

Irregular change in the wheel speed sensor signal
Wheel speed sensor signal continuously indicates high value.

Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Wheel bearing malfunction
Malfunction of wheel speed sensor
Damaged wiring harness and connectors
External noise interference
Improper installation of the wheel speed sensor
Deformation of the magnetic encoder for wheel speed detection
Malfunction of ABS-ECU
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
The number of poles on the magnetic encoder for wheel speed detection (the number of N-pole and S-pole) is changed.

When the DTC C102B is also set, carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).
When the DTC C102B is not set, the following conditions may be present: Some wheels slip Unstable vehicle attitude External noise interference Vehicle ran with the parking brake applied.

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1032 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTC C102B is also set. Q: Is DTC C102B also set? YES: Perform the diagnosis for the DTC C102B (Refer to «DTC C102B: ABNORMALITY IN RR WHEEL SPEED SENSOR CIRCUIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: Go to Step 4.
STEP 4. Connector check: A-03 ABS-ECU connector, C-39 and D-11 intermediate connector, F-02 rear wheel speed sensor (RH) connector Q: Is the check result normal? YES: Go to Step 5. NO: Repair the defective connector. Then go to Step 12 .
STEP 5. Wiring harness check between A-03 ABS-ECU connector terminal No. 16 and F-02 rear wheel speed sensor (RH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 15 and F-02 wheel speed sensor connector terminal No. 2. Q: Is the check result normal? YES: Go to Step 6. NO: Repair the wiring harness. Then go to Step 12 .
STEP 6. Check wheel speed sensor < RR > installation Check how the wheel speed sensor < RR > is installed (Disconnection of wheel speed sensor, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 7. NO: Reinstall the wheel speed sensor < RR > correctly (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 7.
STEP 7. Check for wheel speed sensor < RR > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 8. NO: Replace the wheel speed sensor < RR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 11 .
STEP 8. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < RR > and the wheel speed detection magnet encoder. Check the wheel bearing < RR > for looseness (Refer to «ON-VEHICLE SERVICE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Q: Is the check result normal? YES: Go to Step 9. NO: Replace the rear wheel hub assembly < RR > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 12 .
STEP 9. Check wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 10. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 12 . NO (Deformation): Replace the rear wheel hub assembly < RR > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 12 .
STEP 10. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1032 set? YES: Replace the wheel speed sensor (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 11. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 11. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1032 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 12. NO: The procedure is complete.
STEP 12. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1032 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C1014: Mutual monitoring of FL wheel speed sensor

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ABS-ECU monitors the signals from each wheel speed sensor while the vehicle is being driven. If any fault below is found in these sensor signals, ABS-ECU will set the relevant DTC.

Missing wheel speed sensor signal
Wheel speed sensor signal continuously indicates lower value than the values of other wheel speed sensors.

Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Wheel bearing malfunction
Deformation of the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Malfunction of wheel speed sensor
Improper installation of the wheel speed sensor
ABS-ECU malfunction
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
The number of poles on the magnetic encoder for wheel speed detection (the number of N-pole and S-pole) is changed.

When the DTC C100A is also set, carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).
When the DTC C100A is not set, the following conditions may be present: Some wheels slip. Unstable vehicle attitude External noise interference Vehicle ran with the parking brake applied. Rotate only two wheels with drum tester

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1014 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTC C100A is also set. Q: Is DTC C100A also set? YES: Perform the diagnosis for the DTC C100A (Refer to «DTC C100A: ABNORMALITY IN FL WHEEL SPEED SENSOR CIRCUIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: Go to Step 4.
STEP 4. Check wheel speed sensor < FL > installation Check how the wheel speed sensor < FL > is installed (Disconnection of wheel speed sensor < FL >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 5. NO: Reinstall the wheel speed sensor < FL > correctly (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 5.
STEP 5. Check for wheel speed sensor < FL > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 6. NO: Replace the wheel speed sensor < FL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9 .
STEP 6. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < FL > and the wheel speed detection magnet encoder. Check the wheel bearing < FL > for looseness (Refer to «WHEEL BEARING PLAY CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution__wheel-bearing-end-play-check) ). Q: Is the check result normal? YES: Go to Step 7. NO: Replace the wheel bearing < FL > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 10 .
STEP 7. Check wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 8. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 10 . NO (Deformation): Replace the wheel bearing < FL > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 10 .
STEP 8. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1014 set? YES: Replace the wheel speed sensor < FL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 9. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1014 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 10. NO: The procedure is complete.
STEP 10. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1014 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C101F: Mutual monitoring of FR wheel speed sensor

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ABS-ECU monitors the signals from each wheel speed sensor while the vehicle is being driven. If any fault below is found in these sensor signals, ABS-ECU will set the relevant DTC.

Missing wheel speed sensor signal
Wheel speed sensor signal continuously indicates lower value than the values of other wheel speed sensors.

Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Wheel bearing malfunction
Deformation of the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Malfunction of wheel speed sensor
Improper installation of the wheel speed sensor
ABS-ECU malfunction
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
The number of poles on the magnetic encoder for wheel speed detection (the number of N-pole and S-pole) is changed.

When the DTC C1015 is also set, carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).
When DTC C1015 is not set, the following conditions may be present: Some wheels slip. Unstable vehicle attitude External noise interference Vehicle ran with the parking brake applied. Rotate only two wheels with drum tester

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C101F set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTC C1015 is also set. Q: Is DTC C1015 also set? YES: Perform the diagnosis for the DTC C1015 (Refer to «DTC C1015: ABNORMALITY IN FR FRONT WHEEL SPEED SENSOR (RH) CIRCUIT FRONT WHEEL SPEED SENSOR (RH)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: Go to Step 4.
STEP 4. Check wheel speed sensor < FR > installation Check how the wheel speed sensor < FR > is installed (Disconnection of wheel speed sensor < FR >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 5. NO: Reinstall the wheel speed sensor < FR > correctly (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 5.
STEP 5. Check for wheel speed sensor < FR > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 6. NO: Replace the wheel speed sensor < FR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9 .
STEP 6. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < FR > and the wheel speed detection magnet encoder. Check the wheel bearing < FR > for looseness (Refer to «ON-VEHICLE SERVICE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Q: Is the check result normal? YES: Go to Step 7. NO: Replace the wheel bearing < FR > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 10 .
STEP 7. Check wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 8. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 10 . NO (Deformation): Replace the wheel bearing < FR > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 10 .
STEP 8. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C101F set? YES: Replace the wheel speed sensor < FR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 9. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C101F set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 10. NO: The procedure is complete.
STEP 10. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C101F set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C102A: Mutual monitoring of RL wheel speed sensor

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ABS-ECU monitors the signals from each wheel speed sensor while the vehicle is being driven. If any fault below is found in these sensor signals, ABS-ECU will set the relevant DTC.

Missing wheel speed sensor signal
Wheel speed sensor signal continuously indicates lower value than the values of other wheel speed sensors.

Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Wheel bearing malfunction
Deformation of the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Malfunction of wheel speed sensor
Improper installation of the wheel speed sensor
ABS-ECU malfunction
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
The number of poles on the magnetic encoder for wheel speed detection (the number of N-pole and S-pole) is changed.

When the DTC C1020 is also set, carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).
When the DTC C1020 is not set, the following conditions may be present: Some wheels slip. Unstable vehicle attitude External noise interference Vehicle ran with the parking brake applied. Rotate only two wheels with drum tester

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C102A set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTC C1020 is also set. Q: Is DTC C1020 also set? YES: Perform the diagnosis for the DTC C1020 (Refer to «DTC C1020: ABNORMALITY IN RL WHEEL SPEED SENSOR CIRCUIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: Go to Step 4.
STEP 4. Check wheel speed sensor < RL > installation Check how the wheel speed sensor < RL > is installed (Disconnection of wheel speed sensor < RL >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 5. NO: Reinstall the wheel speed sensor < RL > correctly (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 5.
STEP 5. Check for wheel speed sensor < RL > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 6. NO: Replace the wheel speed sensor < RL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9 .
STEP 6. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < RL > and the wheel speed detection magnet encoder. Check the wheel bearing < RL > for looseness (Refer to «ON-VEHICLE SERVICE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Q: Is the check result normal? YES: Go to Step 7. NO: Replace the rear wheel hub assembly < RL > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 10 .
STEP 7. Check wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 8. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 10 . NO (Deformation): Replace the rear wheel hub assembly < RL > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 10
STEP 8. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C102A set? YES: Replace the wheel speed sensor < RL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 9. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C102A set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 10. NO: The procedure is complete.
STEP 10. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C102A set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C1035: Mutual monitoring of RR wheel speed sensor

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ABS-ECU monitors the signals from each wheel speed sensor while the vehicle is being driven. If any fault below is found in these sensor signals, ABS-ECU will set the relevant DTC.

Missing wheel speed sensor signal
Wheel speed sensor signal continuously indicates lower value than the values of other wheel speed sensors.

Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Wheel bearing malfunction
Deformation of the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Malfunction of wheel speed sensor
Improper installation of the wheel speed sensor
ABS-ECU malfunction
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
The number of poles on the magnetic encoder for wheel speed detection (the number of N-pole and S-pole) is changed.

When the DTC C102B is also set, carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).
When the DTC C102B is not set, the following conditions may be present: Some wheels slip. Unstable vehicle attitude External noise interference Vehicle ran with the parking brake applied. Rotate only two wheels with drum tester

Required Special Tools

MB991958 Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827 M.U.T.-III USB Cable MB991910 M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1035 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTC C102B is also set. Q: Is DTC C102B also set? YES: Perform the diagnosis for the DTC C102B (Refer to «DTC C102B: ABNORMALITY IN RR WHEEL SPEED SENSOR CIRCUIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: Go to Step 4.
STEP 4. Check wheel speed sensor < RR > installation Check how the wheel speed sensor < RR > is installed (Disconnection of wheel speed sensor < RR >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 5. NO: Reinstall the wheel speed sensor < RR > correctly (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 5.
STEP 5. Check for wheel speed sensor < RR > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 6. NO: Replace the wheel speed sensor < RR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9 .
STEP 6. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < RR > and the wheel speed detection magnet encoder. Check the wheel bearing < RR > for looseness (Refer to «ON-VEHICLE SERVICE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Q: Is the check result normal? YES: Go to Step 7. NO: Replace the rear wheel hub assembly < RR > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 10 .
STEP 7. Check wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 8. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 10 . NO (Deformation): Replace the rear wheel hub assembly < RR > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 10 .
STEP 8. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1035 set? YES: Replace the wheel speed sensor < RR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 9. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1035 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 10. NO: The procedure is complete.
STEP 10. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1035 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C1041: Abnormality in periodical signal for FL wheel speed sensor

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ABS-ECU monitors the signals from each wheel speed sensor while the vehicle is being driven. If any periodical drop is found in these sensor signals, ABS-ECU will set the relevant DTC.

Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Wheel bearing malfunction
Deformation of the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Malfunction of wheel speed sensor
Improper installation of the wheel speed sensor
ABS-ECU malfunction
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
The number of poles on the magnetic encoder for wheel speed detection (the number of N-pole and S-pole) is changed.

When the diagnostic trouble code No. C100A is also set, carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).
When the diagnostic trouble code No. C100A is not set, the following conditions may be present: Some wheels slip. Unstable vehicle attitude External noise interference Vehicle ran with the parking brake applied. Only two wheels are rotated on a drum tester.

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1041 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTC C100A is also set. Q: Is DTC C100A also set? YES: Perform the diagnosis for the DTC C100A (Refer to «DTC C100A: ABNORMALITY IN FL WHEEL SPEED SENSOR CIRCUIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: Go to Step 4.
STEP 4. Check wheel speed sensor < FL > installation Check how the wheel speed sensor < FL > is installed (Disconnection of wheel speed sensor < FL >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 5. NO: Reinstall the wheel speed sensor < FL > correctly (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 5.
STEP 5. Check for wheel speed sensor < FL > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 6. NO: Replace the wheel speed sensor < FL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9 .
STEP 6. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < FL > and the wheel speed detection magnet encoder. Check the wheel bearing < FL > for looseness (Refer to «WHEEL BEARING PLAY CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution__wheel-bearing-end-play-check) ). Q: Is the check result normal? YES: Go to Step 7. NO: Replace the wheel bearing < FL > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 10 .
STEP 7. Check wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 8. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 10 . NO (Deformation): Replace the wheel bearing < FL > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 10 .
STEP 8. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1041 set? YES: Replace the wheel speed sensor < FL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 9. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1041 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 10. NO: The procedure is complete.
STEP 10. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1041 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C1042: Abnormality in periodical signal for FR wheel speed sensor

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ASC-ECU monitors the signals from each wheel speed sensor while the vehicle is being driven. If any periodical drop is found in these sensor signals, ASC-ECU will set the relevant DTC.

Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Wheel bearing malfunction
Deformation of the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Malfunction of wheel speed sensor
Improper installation of the wheel speed sensor
ABS-ECU malfunction
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
The number of poles on the magnetic encoder for wheel speed detection (the number of N-pole and S-pole) is changed.

When the diagnostic trouble code No. C1015 is also set, carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).
When diagnostic trouble code No. C1015 is not set, the following conditions may be present: Some wheels slip. Unstable vehicle attitude External noise interference Vehicle ran with the parking brake applied. Only two wheels are rotated on a drum tester.

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1042 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTC C1015 is also set. Q: Is DTC C1015 also set? YES: Perform the diagnosis for the DTC C1015 (Refer to «DTC C1015: ABNORMALITY IN FR FRONT WHEEL SPEED SENSOR (RH) CIRCUIT FRONT WHEEL SPEED SENSOR (RH)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: Go to Step 4.
STEP 4. Check wheel speed sensor < FR > installation Check how the wheel speed sensor < FR > is installed (Disconnection of wheel speed sensor < FR >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 5. NO: Reinstall the wheel speed sensor < FR > correctly (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 5.
STEP 5. Check for wheel speed sensor < FR > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 6. NO: Replace the wheel speed sensor < FR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9 .
STEP 6. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < FR > and the wheel speed detection magnet encoder. Check the wheel bearing < FR > for looseness (Refer to «ON-VEHICLE SERVICE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Q: Is the check result normal? YES: Go to Step 7. NO: Replace the wheel bearing < FR > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 10 .
STEP 7. Check wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 8. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 10 . NO (Deformation): Replace the wheel bearing < FR > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 10 .
STEP 8. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1042 set? YES: Replace the wheel speed sensor < FR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 9. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1042 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 10. NO: The procedure is complete.
STEP 10. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1042 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C1043: Abnormality in periodical signal for RL wheel speed sensor

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ABS-ECU monitors the signals from each wheel speed sensor while the vehicle is being driven. If any periodical drop is found in these sensor signals, ABS-ECU will set the relevant DTC.

Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Wheel bearing malfunction
Deformation of the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Malfunction of wheel speed sensor
Improper installation of the wheel speed sensor
ABS-ECU malfunction
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
The number of poles on the magnetic encoder for wheel speed detection (the number of N-pole and S-pole) is changed.

When the diagnostic trouble code No. C1020 is also set, carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).
When the diagnostic trouble code No. C1020 is not set, the following conditions may be present: Right or left wheels are rotated. Unstable vehicle attitude External noise interference Vehicle ran with the parking brake applied.

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1043 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTC C1020 is also set. Q: Is DTC C1020 also set? YES: Perform the diagnosis for the DTC C1020 (Refer to «DTC C1020: ABNORMALITY IN RL WHEEL SPEED SENSOR CIRCUIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: Go to Step 4.
STEP 4. Check wheel speed sensor < RL > installation Check how the wheel speed sensor < RL > is installed (Disconnection of wheel speed sensor < RL >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 5. NO: Reinstall the wheel speed sensor < RL > correctly (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 5.
STEP 5. Check for wheel speed sensor < RL > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 6. NO: Replace the wheel speed sensor < RL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9 .
STEP 6. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < RL > and the wheel speed detection magnet encoder. Check the wheel bearing < RL > for looseness (Refer to «ON-VEHICLE SERVICE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Q: Is the check result normal? YES: Go to Step 7. NO: Replace the rear wheel hub assembly < RL > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 10 .
STEP 7. Check wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 8. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 10 . NO (Deformation): Replace the rear wheel hub assembly < RL > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 10 .
STEP 8. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1043 set? YES: Replace the wheel speed sensor < RL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 9. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1043 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 10. NO: The procedure is complete.
STEP 10. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1043 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C1044: Abnormality in periodical signal for RR wheel speed sensor

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

ABS-ECU monitors the signals from each wheel speed sensor while the vehicle is being driven. If any periodical drop is found in these sensor signals, ABS-ECU will set the relevant DTC.

Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Wheel bearing malfunction
Deformation of the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Malfunction of wheel speed sensor
Improper installation of the wheel speed sensor
ABS-ECU malfunction
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
The number of poles on the magnetic encoder for wheel speed detection (the number of N-pole and S-pole) is changed.

When the diagnostic trouble code No. C102B is also set, carry out diagnosis with particular emphasis on wiring harness and connector failures between ABS-ECU and the wheel speed sensor. For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).
When the diagnostic trouble code No. C102B is not set, the following conditions may be present: Right or left wheels are rotated. Unstable vehicle attitude External noise interference Vehicle ran with the parking brake applied.

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1044 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTC C102B is also set. Q: Is DTC C102B also set? YES: Perform the diagnosis for the DTC C102B (Refer to «DTC C102B: ABNORMALITY IN RR WHEEL SPEED SENSOR CIRCUIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: Go to Step 4.
STEP 4. Check wheel speed sensor < RR > installation Check how the wheel speed sensor < RR > is installed (Disconnection of wheel speed sensor < RR >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 5. NO: Reinstall the wheel speed sensor < RR > correctly (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 5.
STEP 5. Check for wheel speed sensor < RR > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 6. NO: Replace the wheel speed sensor < RR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9 .
STEP 6. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < RR > and the wheel speed detection magnet encoder. Check the wheel bearing < RR > for looseness (Refer to «ON-VEHICLE SERVICE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Q: Is the check result normal? YES: Go to Step 7. NO: Replace the rear wheel hub assembly < RR > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 10 .
STEP 7. Check wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 8. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 10 . NO (Deformation): Replace the rear wheel hub assembly < RR > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 10 .
STEP 8. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1044 set? YES: Replace the wheel speed sensor < RR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 9. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1044 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 10. NO: The procedure is complete.
STEP 10. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1044 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C1046: FL wheel speed sensor control phase time exceeded

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

This DTC is set if any malfunction below is found

When the brake fluid pressure is decreased for a long time.
When the brake fluid pressure is held for a long time.

PROBABLE CAUSES

Damaged wiring harness and connectors
External noise interference
Malfunction of wheel speed sensor
ABS-ECU malfunction
Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Wheel bearing malfunction
Improper installation of the wheel speed sensor
Deformation of the magnetic encoder for wheel speed detection
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
Missing teeth of the magnetic encoder for wheel speed detection

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1046 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTCs C100A, C1011, C1014, or C1041 are also set. Q: Are DTC C100A, C1011, C1014, or C1041 also set? YES: Carry out the diagnosis for the relevant DTCs. NO: Go to Step 4.
STEP 4. Using scan tool MB991958, check the data list . Check the following data list (Refer to «DATA LIST REFERENCE TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__data-list-reference-table) ). Item No.01: FL wheel speed sensor Q: Is the check result normal? YES: Go to Step 11 . NO: Go to Step 5.
STEP 5. Connector check: A-03 ABS-ECU connector, A-07 front wheel speed sensor (LH) connector Q: Is the check result normal? YES: Go to Step 6. NO: Repair the defective connector. Then go to Step 13 .
STEP 6. Wiring harness check between A-03 ABS-ECU connector terminal No. 18 and A-07 front wheel speed sensor (LH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 19 and A-07 front wheel speed sensor (LH) connector terminal No. 2. Q: Is the check result normal? YES: Go to Step 7. NO: Repair the wiring harness. Then go to Step 13 .
STEP 7. Check wheel speed sensor < FL > installation Check how the wheel speed sensor < FL > is installed (Disconnection of wheel speed sensor < FL >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 8. NO: Reinstall the wheel speed sensor < FL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 8.
STEP 8. Check for wheel speed sensor < FL > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 9. NO: Replace the wheel speed sensor < FL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 12 .
STEP 9. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < FL > and the wheel speed detection magnet encoder. Check the wheel bearing < FL > for looseness (Refer to «WHEEL BEARING PLAY CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution__wheel-bearing-end-play-check) ). Q: Is the check result normal? YES: Go to Step 10. NO: Replace the wheel bearing < FL > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 13 .
STEP 10. Check wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 11. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 13 . NO (Deformation): Replace the wheel bearing < FL > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 13 .
STEP 11. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1046 set? YES: Replace the wheel speed sensor < FL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 12. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 12. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1046 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13. NO: The procedure is complete.
STEP 13. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1046 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C1047: FR wheel speed sensor control phase time exceeded

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

This DTC is set if any malfunction below is found

When the brake fluid pressure is decreased for a long time.
When the brake fluid pressure is held for a long time.

Damaged wiring harness and connectors
External noise interference
Malfunction of wheel speed sensor
ABS-ECU malfunction
Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Wheel bearing malfunction
Improper installation of the wheel speed sensor
Deformation of the magnetic encoder for wheel speed detection
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
Missing teeth of the magnetic encoder for wheel speed detection

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1047 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTCs C1015, C101C, C101F, or C1042 are also set. Q: Are DTC C1015, C101C, C101F, or C1042 also set? YES: Carry out the diagnosis for the relevant DTCs. NO: Go to Step 4.
STEP 4. Using scan tool MB991958, check the data list Check the following data list (Refer to «DATA LIST REFERENCE TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__data-list-reference-table) ). Item No.02: FR wheel speed sensor Q: Is the check result normal? YES: Go to Step 11 . NO: Go to Step 5.
STEP 5. Connector check: A-03 ABS-ECU connector, A-02 front wheel speed sensor (RH) connector Q: Is the check result normal? YES: Go to Step 6. NO: Repair the defective connector. Then go to Step 13 .
STEP 6. Wiring harness check between A-03 ABS-ECU connector terminal No. 22 and A-02 front wheel speed sensor (RH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 21 and A-02 front wheel speed sensor (RH) connector terminal No. 2. Q: Is the check result normal? YES: Go to Step 7. NO: Repair the wiring harness. Then go to Step 13 .
STEP 7. Check wheel speed sensor < FR > installation Check how the wheel speed sensor < FR > is installed (Disconnection of wheel speed sensor < FR >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 8. NO: Reinstall the wheel speed sensor < FR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 8.
STEP 8. Check for wheel speed sensor < FR > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 9. NO: Replace the wheel speed sensor < FR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 12 .
STEP 9. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < FR > and the wheel speed detection magnet encoder. Check the wheel bearing < FR > for looseness (Refer to «WHEEL BEARING PLAY CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution__wheel-bearing-end-play-check) ). Q: Is the check result normal? YES: Go to Step 10. NO: Replace the wheel bearing < FR > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 13 .
STEP 10. Check wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 11. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 13 . NO (Deformation): Replace the wheel bearing < FR > (Refer to «FRONT AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/axle-shafts/#front-axle-except-lancer-evolution) ). Then go to Step 13 .
STEP 11. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1047 set? YES: Replace the wheel speed sensor < FR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 12. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 12. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1047 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13. NO: The procedure is complete.
STEP 13. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1047 set? YES: Return to Step 1 . NO: The procedure is complete.

Scheme 94

Scheme 94: DTC C1048: RL wheel speed sensor control phase time exceeded

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

This DTC is set if any malfunction below is found

When the brake fluid pressure is decreased for a long time.
When the brake fluid pressure is held for a long time.

Damaged wiring harness and connectors
External noise interference
Malfunction of wheel speed sensor
ABS-ECU malfunction
Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Wheel bearing malfunction
Improper installation of the wheel speed sensor
Deformation of the magnetic encoder for wheel speed detection
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
Missing teeth of the magnetic encoder for wheel speed detection

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1048 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTCs C1020, C1027, C102A, or C1043 are also set. Q: Are DTC C1020, C1027, C102A, or C1043 also set? YES: Carry out the diagnosis for the relevant DTCs. NO: Go to Step 4.
STEP 4. Using scan tool MB991958, check the data list Check the following data list (Refer to «DATA LIST REFERENCE TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__data-list-reference-table) ). Item No.03: RL wheel speed sensor Q: Is the check result normal? YES: Go to Step 11 . NO: Go to Step 5.
STEP 5. Connector check: A-03 ABS-ECU connector, C-39 and D-15 intermediate connector, F-21 rear wheel speed sensor (LH) connector Q: Is the check result normal? YES: Go to Step 6. NO: Repair the defective connector. Then go to Step 13 .
STEP 6. Wiring harness check between A-03 ABS-ECU connector terminal No. 24 and F-21 rear wheel speed sensor (LH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 25 and F-21 rear wheel speed sensor (LH) connector terminal No. 2. Q: Is the check result normal? YES: Go to Step 7. NO: Repair the wiring harness. Then go to Step 13 .
STEP 7. Check for wheel speed sensor < RL > installation Check how the wheel speed sensor < RL > is installed (Disconnection of wheel speed sensor < RL >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 8. NO: Reinstall the wheel speed sensor < RL > correctly (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 8.
STEP 8. Check for wheel speed sensor < RL > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 9. NO: Replace the wheel speed sensor < RL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 12 .
STEP 9. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor < RL > and the wheel speed detection magnet encoder. Check the wheel bearing < RL > for looseness (Refer to «ON-VEHICLE SERVICE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Q: Is the check result normal? YES: Go to Step 10. NO: Replace the rear wheel hub assembly < RL > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 13 .
STEP 10. Check of wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 11. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 13 . NO (Deformation): Replace the rear wheel hub assembly < RL > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 13 .
STEP 11. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1048 set? YES: Replace the wheel speed sensor < RL > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 12. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 12. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1048 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13. NO: The procedure is complete.
STEP 13. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1048 set? YES: Return to Step 1 . NO: The procedure is complete.

Scheme 95

Scheme 95: DTC C1049: RR wheel speed sensor control phase time exceeded

CAUTION

The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

This DTC is set if any malfunction below is found

When the brake fluid pressure is decreased for a long time.
When the brake fluid pressure is held for a long time.

Damaged wiring harness and connectors
External noise interference
Malfunction of wheel speed sensor
ABS-ECU malfunction
Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection
Adhesion of foreign materials on the wheel speed sensor
Adhesion of foreign materials on the magnetic encoder for wheel speed detection
Wheel bearing malfunction
Improper installation of the wheel speed sensor
Deformation of the magnetic encoder for wheel speed detection
Disturbance of magnetization pattern for magnetic encoder for wheel speed detection
Missing teeth of the magnetic encoder for wheel speed detection

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1049 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the DTCs C102B, C1032, C1035, or C1044 are also set. Q: Are DTC C102B, C1032, C1035, or C1044 also set? YES: Carry out the diagnosis for the relevant DTCs. NO: Go to Step 4.
STEP 4. Using scan tool MB991958, check the data list Check the following data list (Refer to «DATA LIST REFERENCE TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__data-list-reference-table) ). Item No.04: RR wheel speed sensor Q: Is the check result normal? YES: Go to Step 11 . NO: Go to Step 5.
STEP 5. Connector check: A-03 ABS-ECU connector, C-39 and D-15 intermediate connector, F-02 rear wheel speed sensor (RH) connector Q: Is the check result normal? YES: Go to Step 6. NO: Repair the defective connector. Then go to Step 13 .
STEP 6. Wiring harness check between A-03 ABS-ECU connector terminal No. 16 and F-02 rear wheel speed sensor (RH) connector terminal No. 1, and between A-03 ABS-ECU connector terminal No. 15 and F-02 rear wheel speed sensor (RH) connector terminal No. 2. Q: Is the check result normal? YES: Go to Step 7. NO: Repair the wiring harness. Then go to Step 13 .
STEP 7. Check for wheel speed sensor < RR > installation Check how the wheel speed sensor < RR > is installed (Disconnection of wheel speed sensor < RR >, loose mounting bolt, etc.). Q: Is the check result normal? YES: Go to Step 8. NO: Reinstall the wheel speed sensor < RR > correctly (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 8.
STEP 8. Check for wheel speed sensor < RR > output current Refer to «WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__wheel-speed-sensor-output-current-measurement) . Q: Is the check result normal? YES: Go to Step 9. NO: Replace the wheel speed sensor < RR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 12 .
STEP 9. Check for wheel bearing looseness NOTE: Loose wheel bearing may increase the gap between the wheel speed sensor and the wheel speed detection magnet encoder. Check the wheel bearing < RR > for looseness (Refer to «ON-VEHICLE SERVICE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Q: Is the check result normal? YES: Go to Step 10. NO: Replace the rear wheel hub assembly < RR > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 13 .
STEP 10. Check of wheel speed detection encoder Check the encoder for adhesion of foreign materials or deformation. Q: Is the check result normal? YES: Go to Step 11. NO (Adhesion of foreign materials): Remove the foreign materials and clean the encoder so as not to disturb the magnetization pattern on it while taking care of the magnet, magnetic substance, and magnetic attraction. Then go to Step 13 . NO (Deformation): Replace the rear wheel hub assembly < RR > (Refer to «REAR AXLE HUB ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/differentials-drive-axles/#rear-axle-fwd-except-lancer-evolution) ). Then go to Step 13 .
STEP 11. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1049 set? YES: Replace the wheel speed sensor < RR > (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 12. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 12. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1049 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 13. NO: The procedure is complete.
STEP 13. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1049 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C104B: Abnormality in FL wheel inlet valve system; DTC C104F: Abnormality in FR wheel inlet valve system; DTC C1053: Abnormality in RL wheel inlet valve system; DTC C1057: Abnormality in RR wheel inlet valve system; DTC C105F: Abnormality in FL wheel outlet valve system; DTC C1063: Abnormality in FR wheel outlet valve system; DTC C1067: Abnormality in RL wheel outlet valve system; DTC C105B: Abnormality in RR wheel outlet valve system

CAUTION

ABS-ECU contains the power supply circuit (terminal No. 26) for the solenoid valve. The solenoid valve is energized by the valve relay, which is incorporated in ABS-ECU.
The valve relay, which is incorporated in ABS-ECU, is always energizing the solenoid valve unless the initial check is in progress when the ignition switch is turned on, or the recurrent system check is in progress.
ABS-ECU activates the solenoid valve by turning on its driving transistor.

These DTCs will be set under the conditions below

The solenoid valve is not energized even after ABS-ECU has turned on the driving transistor (Open circuit is present in the power supply circuit to the ABS-ECU solenoid valve, or the valve relay has failed).
After ABS-ECU has turned off the driving transistor, the solenoid valve still remains energized (short in the solenoid valve circuit).
When a solenoid valve failure is detected

ABS-ECU malfunction

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is the relevant DTC set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Check whether the DTC is reset. Erase the diagnostic trouble code. Q: Is the relevant DTC set? YES: Replace the hydraulic unit (ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 4. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 4. Check whether the DTC is reset. Erase the diagnostic trouble code. Q: Is the relevant DTC set? YES: Return to Step 1 . NO: The procedure is complete.

Scheme 96

Scheme 96: DTC C2104: Malfunction of power supply circuit

CAUTION

ABS-ECU contains the power supply circuit (terminal No. 26) for the solenoid valve. The solenoid valve is energized by the valve relay, which is incorporated in ABS-ECU.
The valve relay, which is incorporated in ABS-ECU, is always energizing the solenoid valve unless the initial check is in progress when the ignition switch is turned on, or the recurrent system check is in progress.

This DTC will be set when the solenoid valve supply voltage is not within the standard value.

Fusible link malfunction
Damaged wiring harness and connectors
Abnormality in battery or generator
ABS-ECU malfunction

Carry out diagnosis with particular emphasis on wiring harness and connector failures between the power supply circuit (terminal No. 26) to ABS-ECU solenoid valve or ground circuit (terminal No. 14). For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A
MB991974: ABS check harness

Scheme 97

Scheme 98

Scheme 99

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C2104 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Battery check Refer to «BATTERY TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#battery-except-lancer-evolution) . Q: Is the battery in good condition? YES: Go to Step 4. NO: Replace the battery. Then go to Step 11 .
STEP 4. Charging system check Refer to «GENERATOR OUTPUT LINE VOLTAGE DROP TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/charging-system/#charging-system-except-lancer-evolution) . Q: Is the charging system in good condition? YES: Go to Step 5. NO: Repair or replace the charging system component(s). Then go to Step 11 .
STEP 5. Connector check: A-03 ABS-ECU connector Q: Is the check result normal? YES: Go to Step 6. NO: Repair the defective connector. Then go to Step 11 .
STEP 6. Fusible link check: Check fusible link No. 27. Visually check for open circuit in fusible link No. 27. Q: Is the check result normal? YES: Go to Step 8 . NO: Go to Step 7.
STEP 7. Resistance measurement at A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Disconnect the fusible link No. 27. Measure the resistance between the terminal No. 26 and the body ground. OK: No continuity Q: Is the check result normal? YES: Replace the fusible link No. 27. Then go to Step 11 . NO: The short circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 26 and the fusible link No. 27, and then replace the fusible link No. 27. Then go to Step 11 .
STEP 8. Voltage measurement at the A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and measure the voltage at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the voltage between the terminal No. 26 and body ground. OK: Battery voltage Q: Is the check result normal? YES: Go to Step 9. NO: The open circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 26 and the fusible link No. 27. Then go to Step 11 .
STEP 9. Resistance measurement at A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and measure the resistance at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the resistance between the terminal No. 1 and body ground, and between terminal No. 14 and body ground. OK: Continuity exists (2 ohms or less) Q: Is the check result normal? YES: Go to Step 10. NO: An open circuit may be present in the ground circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 1 and the body ground, and between the A-03 ABS-ECU connector terminal No. 14 and the body ground. Then go to Step 11 .
STEP 10. Check whether the DTC is reset. Q: Is DTC C2104 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 11. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 11. Check whether the DTC is reset. Q: Is DTC C2104 set? YES: Return to Step 1 . NO: The procedure is complete.

Scheme 100

Scheme 100: DTC C1073: Malfunction of motor drive circuit

CAUTION

ABS-ECU contains the power supply circuit (terminal No. 13) for the pump motor. The pump motor is energized by the motor switch, which is incorporated in ABS-ECU.
The pump motor switch, which is incorporated in ABS-ECU, is always off unless the ABS operating or the motor solenoid valve check is activated when the vehicle is started.
ABS-ECU activates the pump motor by turning on the ECU built-in pump motor switch.

If the pump motor switch voltage drop indicates high value when the pump motor operates or after the operation, the pump motor operation is stopped and this DTC is set.

Fusible link malfunction
Damaged wiring harness and connectors
Abnormality in battery or generator
ABS-ECU malfunction

Carry out diagnosis with particular emphasis on wiring harness and connector failures between the power supply circuit (A-03 ABS-ECU connector terminal No. 13) to the ABS-ECU motor and the ground circuit (A-03 ABS-ECU connector terminal No. 1). For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A
MB991974: ABS check harness

Scheme 101

Scheme 102

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. Check whether the DTC is reset. Q: Is DTC C1073 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Battery check Refer to «BATTERY TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#battery-except-lancer-evolution) . Q: Is the battery in good condition? YES: Go to Step 4. NO: Charge or replace the battery.
STEP 4. Charging system check Refer to «GENERATOR OUTPUT LINE VOLTAGE DROP TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/charging-system/#charging-system-except-lancer-evolution) . Q: Is the charging system in good condition? YES: Go to Step 5. NO: Repair or replace the charging system component(s). Then go to Step 11 .
STEP 5. Connector check: A-03 ABS-ECU connector Q: Is the check result normal? YES: Go to Step 6. NO: Repair the defective connector. Then go to Step 11 .
STEP 6. Fusible link check: Check fusible link No. 26. Visually check for open circuit in the fusible link No. 26. Q: Is the check result normal? YES: Go to Step 8 . NO: Go to Step 7.
STEP 7. Resistance measurement at A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Disconnect the fusible link No. 26. Measure the resistance between the terminal No. 13 and the body ground. OK: No continuity Q: Is the check result normal? YES: Replace the fusible link No. 26. Then go to Step 11 . NO: The short circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 13 and the fusible link No. 26, and then replace the fusible link No. 26. Then go to Step 11 .
STEP 8. Voltage measurement at the A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and measure the voltage at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the voltage between terminal No. 13 and body ground. OK: Battery voltage Q: Is the check result normal? YES: Go to Step 9. NO: The open circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 1 and the fusible link No. 26. Then go to Step 11 .
STEP 9. Resistance measurement at A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the resistance between terminal No. 1 and body ground, and between terminal No. 14 and body ground. OK: Continuity exists (2 ohms or less) Q: Is the check result normal? YES: Go to Step 10. NO: An open circuit may be present in the ground circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 1 and the body ground, and between the A-03 ABS-ECU connector terminal No. 14 and the body ground. Then go to Step 11 .
STEP 10. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1073 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 11. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 11. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C1073 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C2116: Abnormality in pump motor power supply voltage

CAUTION

ABS-ECU contains the power supply circuit (terminal No. 13) for the pump motor. The pump motor is energized by the motor switch, which is incorporated in ABS-ECU.
The pump motor switch, which is incorporated in ABS-ECU, is always off unless the motor solenoid valve check is activated when the vehicle is started.
ABS-ECU activates the pump motor by turning on the ECU built-in pump motor switch.

This DTCs will be set under the conditions below

When the power supply voltage of the pump motor, which is not in operation, is abnormally low for a prolonged period
When the power supply voltage of the pump motor, which is not in operation, is abnormally high for a prolonged period

Fusible link malfunction
Damaged wiring harness and connectors
Abnormality in battery or generator
ABS-ECU malfunction

Carry out diagnosis with particular emphasis on wiring harness and connector failures between the power supply circuit (A-03 ABS-ECU connector terminal No. 13) to the ABS-ECU motor and the ground circuit (A-03 ABS-ECU connector terminal No. 1). For diagnosis procedures, refer to How to treat past trouble (Refer to «HOW TO TREAT PAST TROUBLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-treat-past-trouble) ).

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A
MB991974: ABS check harness

Scheme 103

Scheme 104

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C2116 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Battery check Refer to «BATTERY TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#battery-except-lancer-evolution) . Q: Is the battery in good condition? YES: Go to Step 4. NO: Replace the battery. Then go to Step 11 .
STEP 4. Charging system check Refer to «GENERATOR OUTPUT LINE VOLTAGE DROP TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/charging-system/#charging-system-except-lancer-evolution) . Q: Is the charging system in good condition? YES: Go to Step 5. NO: Repair or replace the charging system component(s). Then go to Step 11 .
STEP 5. Connector check: A-03 ABS-ECU connector Q: Is the check result normal? YES: Go to Step 6. NO: Repair the defective connector. Then go to Step 11 .
STEP 6. Fusible link check: Check fusible link No. 26. Visually check for open circuit in the fusible link No. 26. Q: Is the check result normal? YES: Go to Step 8 . NO: Go to Step 7.
STEP 7. Resistance measurement at the A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and measure the voltage at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Disconnect the fusible link No. 26. Measure the resistance between terminal No. 13 and body ground. OK: No continuity Q: Is the check result normal? YES: Replace the fusible link No. 26. Then go to Step 11 . NO: The short circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 13 and the fusible link No. 26, and then replace the fusible link No. 26. Then go to Step 11 .
STEP 8. Voltage measurement at the A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the voltage at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the voltage between the terminal No. 13 and the body ground. OK: Approximately battery voltage Q: Is the check result normal? YES: Go to Step 9. NO: The open circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 13 and the fusible link No. 26. Then go to Step 11 .
STEP 9. Resistance measurement at A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the resistance between terminal No. 1 and body ground, and between terminal No. 14 and body ground. OK: Continuity exists (2 ohms or less) Q: Is the check result normal? YES: Go to Step 10. NO: An open circuit may be present in the ground circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 1 and the body ground, and between the A-03 ABS-ECU connector terminal No. 14 and the body ground. Then go to Step 11 .
STEP 10. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C2116 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 11. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 11. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C2116 set? YES: Return to Step 1 . NO: The procedure is complete.

Scheme 105

Scheme 105: DTC C1000: Abnormality in stop light switch circuit

CAUTION

ETACS-ECU sends the ON signal generated when the brake pedal is depressed and OFF signal generated when it is released to ABS-ECU via the CAN bus lines.

This DTC is set in the following case.

When the vehicle has run for a long time with the stop light switch turned ON.
When the OFF status of the stop light switch does not match the vehicle attitude

Improper adjustment of stop light switch installation position
Malfunction of the stop light switch
Damaged wiring harness and connectors
Malfunction of ETACS-ECU
ABS-ECU malfunction

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A
MB991974: ABS check harness

Scheme 106

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1000 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Battery check Refer to «BATTERY TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#battery-except-lancer-evolution) . Q: Is the battery in good condition? YES: Go to Step 4. NO: Charge or replace the battery, and go to Step 17 .
STEP 4. Stoplight operation check Check the stoplight operation when the brake pedal is depressed. Check that the stoplight illuminates when the brake pedal is depressed and that it goes out when the brake pedal is released. OK: When the brake pedal is released: OFF When the brake pedal is depressed: Illuminates Q: Is the check result normal? YES: Go to Step 18 . NO: Go to Step 5.
STEP 5. Check stoplight switch installation Refer to «BRAKE PEDAL CHECK AND ADJUSTMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/mechanical-hydraulic/#basic-brake-system-except-lancer-evolution__brake-pedal-check-and-adjustment) . Q: Is the check result normal? YES: Go to Step 6. NO: Install the stop light switch correctly (Refer to «BRAKE PEDAL CHECK AND ADJUSTMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/mechanical-hydraulic/#basic-brake-system-except-lancer-evolution__brake-pedal-check-and-adjustment) ). Then go to Step 22 .
STEP 6. Stop light switch continuity check Remove the stop light switch (Refer to «BRAKE PEDAL»(/mitsubishi/lancer-evolution/x-2007-2016/remont/mechanical-hydraulic/#basic-brake-system-except-lancer-evolution) ). Connect the circuit tester (ohms range) to the stop light switch connector terminals No. 1 and 2. When no continuity is detected with the plunger pressed from the edge of the outer case by the dimension shown in the figure and when continuity is detected with the plunger released, the stop light switch is in good condition. Q: Is the check result normal? YES: Go to Step 7. NO: Replace the stop light switch (Refer to «BRAKE PEDAL»(/mitsubishi/lancer-evolution/x-2007-2016/remont/mechanical-hydraulic/#basic-brake-system-except-lancer-evolution) ). Then go to Step 22 .
STEP 7. ETACS-ECU fuse No. 2 check Q: Is the check result normal? YES: Go to Step 12 . NO: Go to Step 8.
STEP 8. Connector check: C-304 ETACS-ECU connector, C-312 ETACS-ECU connector, C-32 stoplight switch connector, C-39 Intermediate connector, D-11 Intermediate connector, D-14 Intermediate connector, F-23 Intermediate connector, F-06 rear combination light (stoplight: RH) connector, F-20 rear combination light (stoplight: LH) connector, F-10 high-mounted stoplight connector Q: Is the check result normal? YES: Go to Step 9. NO: Repair the damaged connector, and then replace fuse No. 2. Then go to Step 22 .
STEP 9. Resistance measurement at C-32 stoplight switch connector Disconnect C-32 stoplight switch connector, and measure at the wiring harness side. Disconnect C-312 ETACS-ECU connector and C-39 joint connector. Measure the resistance between the terminal No. 1 and the body ground. OK: No continuity Q: Is the check result normal? YES: Go to Step 10. NO: A short circuit may be present in the wiring harness between C-39 joint connector terminal No. 9 and C-32 stoplight switch connector terminal No. 1 or between C-312 ETACS-ECU connector terminal No. 16 and C-32 stoplight switch connector terminal No. 1. Repair the wiring harness if necessary, and then replace fuse No. 2. Then go to Step 22 .
STEP 10. Resistance measurement at C-32 stoplight switch connector Disconnect C-32 stoplight switch connector, and measure at the wiring harness side. Disconnect C-304 ETACS-ECU connector. Measure the resistance between the terminal No. 2 and the body ground. OK: No continuity Q: Is the check result normal? YES: Go to Step 11. NO: A short circuit may be present in the wiring harness between C-304 ETACS-ECU connector terminal No. 1 and C-32 stoplight switch connector terminal No. 2. Repair the wiring harness if necessary, and then replace fuse No. 2. Then go to Step 22 .
STEP 11. Resistance measurement at C-39 joint connector Disconnect C-39 joint connector, and measure at the wiring harness side. Disconnect F-06 rear combination light (stoplight: RH) connector, F-20 rear combination light (stoplight: LH) connector, F-10 high-mounted stoplight connector. Measure the resistance between the terminal No. 9 and the body ground. OK: No continuity Q: Is the check result normal? YES: Replace fuse No. 2. Then go to Step 22 . NO: A short circuit may be present in the wiring harness between C-39 joint connector terminal No. 9 and F-06 rear combination light (stoplight: RH) connector terminal No. 4 or between C-39 joint connector terminal No. 9 and F-20 rear combination light (stoplight: LH) connector terminal No. 4 or between C-39 joint connector terminal No. 9 and F-10 high-mounted stoplight connector terminal No. 1. Repair the wiring harness if necessary, and then replace fuse No. 2. Then go to Step 22 .
STEP 12. Connector check: C-304 ETACS-ECU connector Q: Is the check result normal? YES: Go to Step 13. NO: Repair the damaged connector. Then go to Step 22 .
STEP 13. Measure the voltage at the C-304 ETACS-ECU connector. CAUTION: Measure while the brake pedal is not depressed. Measure the voltage between terminal No. 1 and the body ground by backprobing. OK: Approximately system voltage Q: Is the check result normal? YES: Go to Step 14. NO: Replace the ETACS-ECU (Refer to «ETACS-ECU»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#electronic-time-and-alarm-control-system-etacs-except-lancer-evolution) ). Then go to Step 22 .
STEP 14. Connector check: C-32 Stoplight switch connector Q: Is the check result normal? YES: Go to Step 15. NO: Repair the damaged connector. Then go to Step 22 .
STEP 15. Measure the voltage at C-32 stoplight switch connector. Disconnect C-32 stoplight switch connector, and measure the voltage at harness connector side. Measure the voltage between the terminal No. 2 and the body ground. OK: Approximately system voltage Q: Is the check result normal? YES: Go to Step 16. NO: An open circuit may be present in the wiring harness between C-304 ETACS-ECU connector terminal No. 1 and C-32 stoplight switch connector terminal No. 2. Repair the wiring harness. Then go to Step 22 .
STEP 16. Connector check: C-39 joint connector Q: Is the check result normal? YES: Go to Step 17. NO: Repair the damaged connector. Then go to Step 22 .
STEP 17. Voltage measurement at C-39 joint connector CAUTION: Measure while the brake pedal is depressed. Disconnect the connector, and measure at the wiring harness side. Measure the voltage between the terminal No. 9 and the body ground. OK: Approximately system voltage Q: Is the check result normal? YES: Go to Step 18. NO: An open circuit may be present in the wiring harness between C-39 joint connector terminal No. 9 and C-32 stoplight switch connector terminal No. 1. Repair the wiring harness. Then go to Step 22 .
STEP 18. Connector check: C-312 ETACS-ECU connector Q: Is the check result normal? YES: Go to Step 19. NO: Repair the damaged connector. Then go to Step 22 .
STEP 19. Measure the voltage at the C-312 ETACS-ECU connector. Measure by backprobing without disconnecting the connector. Measure the voltage between the terminal No. 16 and the body ground. OK: When the brake pedal is released: 0 V - 5V (pulse) When the brake pedal is depressed: Approximately system voltage Q: Is the check result normal? YES: Go to Step 21 . NO: Go to Step 20.
STEP 20. Check the wiring harness between C-312 ETACS-ECU connector terminal No. 16 and C-32 stoplight switch connector terminal No. 1 Check the signal line for open circuit. Q: Is the check result normal? YES: Replace the ETACS-ECU. NO: Repair the wiring harness.
STEP 21. Check whether the DTC is reset. Erase the DTC. Q: Is DTC 1000 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 22. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 22. Check whether the DTC is reset. Erase the DTC. Q: Is DTC 1000 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C2200: Abnormality in ABS-ECU

CAUTION

OPERATION

ABS-ECU controls ABS by calculating the data sent from the wheel speed sensor and the G sensor.

This DTC is set when ABS-ECU has malfunction.

ABS-ECU malfunction

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 2. NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C2200 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 3. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 3. DTC recheck after resetting CAN bus lines Q: Is DTC C2200 set? YES: Return to Step 1 . NO: The procedure is complete.

Scheme 107

Scheme 107: DTC C2100: Abnormality in battery voltage (low voltage)

CAUTION

The ABS-ECU is energized by the valve power supply circuit (terminal No. 26). When the power is supplied from the ignition switch (IG1) to the IG1 relay in ETACS-ECU, IG1 relay is turned on. At this time, the valve power supply circuit (terminal No. 26) energizes the ABS-ECU.

This DTC is set in the following case.

When the ABS-ECU power supply voltage drops below 9.7 ± 0.3 V while driving

Battery failure
Battery terminal looseness
Fusible link malfunction
Charging system failed
Damaged wiring harness and connectors
ABS-ECU malfunction

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A
MB991974: ABS check harness

Scheme 108

Scheme 109

Scheme 110

STEP 1. Using scan tool MB991958, diagnose the CAN bus line. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, and then go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C2100 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Battery check Refer to «BATTERY TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#battery-except-lancer-evolution) . Q: Is the battery in good condition? YES: Go to Step 5 . NO: Charge or replace the battery. Then go to Step 4.
STEP 4. Charging system check Refer to «GENERATOR OUTPUT LINE VOLTAGE DROP TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/charging-system/#charging-system-except-lancer-evolution) . Q: Is the charging system in good condition? YES: Go to Step 5. NO: Repair or replace the charging system component(s).
STEP 5. Connector check: A-03 ABS-ECU connector, C-128 intermediate connector, C-212 ignition switch connector, C-309 ETACS-ECU connector, C-317 ETACS-ECU connector Q: Is the check result normal? YES: Go to Step 6. NO: Repair the damaged connector.
STEP 6. Fusible link check: Check fusible link No. 27. Visually check for open circuit in fusible link No. 27. Q: Is the check result normal? YES: Go to Step 8 . NO: Go to Step 7.
STEP 7. Resistance measurement at A-03 ABS-ECU connector Removal the fusible link No. 27. Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the resistance between the terminal No. 26 and the body ground. OK: No continuity Q: Is the check result normal? YES: Replace the fusible link No. 27. Then go to Step 21 . NO: The short circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 26 and the fusible link No. 27, and then replace the fusible link No. 27. Then go to Step 21 .
STEP 8. Voltage measurement at the A-03 ABS-ECU connector Disconnect the ASC-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the voltage at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the voltage between terminal No. 26 and body ground. OK: Battery positive voltage Q: Is the check result normal? YES: Go to Step 9. NO: The open circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 26 and the fusible link No. 27. Then go to Step 21 .
STEP 9. Check the fuse No. 12. Visually check for open circuit in fuse No. 12. Q: Is the check result normal? YES: Go to Step 11 . NO: Go to Step 10.
STEP 10. Resistance measurement at A-03 ABS-ECU connector Disconnect the C-317 ETACS-ECU connector. Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the resistance between the terminal No. 7 and the body ground. OK: No continuity Q: Is the check result normal? YES: Replace the fuse No. 12. Then go to Step 21 . NO: The short circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 7 and the C-317 ETACS-ECU connector terminal No. 5, and then replace the fuse No. 12. Then go to Step 21 .
STEP 11. Measure the voltage at the C-309 ETACS-ECU connector. Disconnect the connector, and measure at the wiring harness-side connector. Measure the voltage between the terminal No. 1 and the body ground. OK: Battery positive voltage Q: Is the check result normal? YES: Go to Step 15 . NO: Go to Step 12.
STEP 12. Fusible link check: Check the fusible link No. 34. Q: Is the check result normal? YES: Go to Step 14 . NO: Go to Step 13.
STEP 13. Resistance measurement at C-309 ETACS-ECU connector Removal the fusible link No. 34. Disconnect the C-309 ETACS-ECU connector, and then measure the resistance at the harness connector side. Measure the resistance between the terminal No. 1 and the body ground. OK: No continuity Q: Is the check result normal? YES: Replace the fusible link No. 34. Then go to Step 21 . NO: The short circuit may be present in the power supply circuit. Repair the wiring harness between the C-309 ETACS-ECU connector terminal No. 1 and the fusible link No. 34, and then replace the fusible link No. 34. Then go to Step 21 .
STEP 14. Resistance measurement at fusible link No. 34 and C-309 ETACS-ECU connector Disconnect the C-309 ETACS-ECU connector and fusible link No. 34, and then measure the resistance at the harness connector side. Measure the resistance between the fusible link No. 34 and C-309 ETACS-ECU connector terminal No. 1. OK: Continuity exists (2 ohms or less) Q: Is the check result normal? YES: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) .) NO: The open circuit may be present in the power supply circuit. Repair the wiring harness between the fusible link No. 34 and C-309 ETACS-ECU connector terminal No. 1. Then go to Step 21 .
STEP 15. Resistance measurement at A-03 ABS-ECU connector Disconnect the C-317 ETACS-ECU connector. Disconnect the A-03 ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the resistance between the A-03 ABS-ECU connector terminal No. 7 and the C-317 ETACS-ECU connector terminal No. 5. OK: Continuity exists (2 ohms or less) Q: Is the check result normal? YES: Go to Step 16. NO: The open circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 7 and the C-317 ETACS-ECU connector terminal No. 5. Then go to Step 21 .
STEP 16. Measure the voltage at the C-317 ETACS-ECU connector. Measure by backprobing without disconnecting the connector. Turn the ignition switch to the "ON" position. Measure the voltage between the terminal No. 6 and the body ground. OK: Battery positive voltage Q: Is the check result normal? YES: Go to Step 18 . NO: Go to Step 17.
STEP 17. Resistance measurement at C-317 ETACS-ECU connector and the C-212 ignition switch connector Disconnect the C-317 ETACS-ECU connector and C-212 ignition switch connector, and then measure the resistance at the harness connector side. Measure the resistance between the C-317 ETACS-ECU connector terminal No. 6 and C-212 ignition switch connector terminal No. 2. OK: Continuity exists (2 ohms or less) Q: Is the check result normal? YES: Go to Step 18. NO: The open circuit may be present in the power supply circuit. Repair the wiring harness between the C-317 ETACS-ECU connector terminal No. 6 and C-212 ignition switch connector terminal No. 2. Then go to Step 21 .
STEP 18. Measure the voltage at the C-317 ETACS-ECU connector. Measure by backprobing without disconnecting the connector. Turn the ignition switch to the "ON" position. Measure the voltage between the terminal No. 5 and the body ground. OK: Approximately system voltage Q: Is the check result normal? YES: Go to Step 20 . NO: Go to Step 19.
STEP 19. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C2100 set? YES: Replace the ETACS-ECU (Refer to «ETACS-ECU»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#electronic-time-and-alarm-control-system-etacs-except-lancer-evolution) ). Then go to Step 20. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 20. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C2100 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 21. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 21. Check whether the DTC is reset. Erase the DTC. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is DTC C2100 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C2101: Abnormality in battery voltage (high voltage)

CAUTION

This DTC is set when the ABS-ECU power supply voltage is more than 18.0 ± 1.0 volts.

Battery failure
ABS-ECU malfunction
Charging system failed

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A
MB991974: ABS check harness

STEP 1. Using scan tool MB991958, diagnose the CAN bus line. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C2101 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Battery check Refer to «BATTERY TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#battery-except-lancer-evolution) . Q: Is the battery in good condition? YES: Go to Step 5 . NO: Replace the battery. Then go to Step 4.
STEP 4. Charging system check Refer to «GENERATOR OUTPUT LINE VOLTAGE DROP TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/charging-system/#charging-system-except-lancer-evolution) . Q: Is the charging system in good condition? YES: Go to Step 5. NO: Repair or replace the charging system component(s).
STEP 5. Check whether the DTC is reset. Erase the DTC. Q: Is DTC C2101 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 6. NO: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 6. Check whether the DTC is reset. Erase the DTC. Q: Is DTC C2101 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC C1395: Brake fluid filling not completed

CAUTION

This DTC is set when the brake fluid is not filled in the hydraulic unit.

Different hydraulic unit (For delivery to factory)
ABS-ECU malfunction

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: V.C.I. MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 2. NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Erase the diagnostic trouble code. Q: Is DTC C1395 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: The procedure is complete.

DTC C2203: VIN not recorded

CAUTION

If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to CAN BUS DIAGNOSTICS TABLE ). When other DTC for ABS-ECU is set, troubleshoot that DTC first.

ABS-ECU receives vehicle information from the engine control module (ECM) and stores it.

This DTC is set when ABS-ECU cannot receive the vehicle information number from the engine-ECU.

Malfunction of the CAN bus
engine control module (ECM) malfunction
ABS-ECU malfunction
When the ignition switch is turned to the "ON" position for the first time after the ABS-ECU is replaced.

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C2203 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the DTC Check that the engine control module (ECM) sets a DTC. Q: Is any DTC set? YES: Troubleshoot the engine control module (ECM) DTC [Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/mitsubishi/lancer-evolution/x-2007-2016/remont/testing-diagnostics/#multiport-fuel-injection-mfi-20l-non-turbo-except-lancer-evolution) < 2.0L ENGINE >, «DIAGNOSTIC TROUBLE CODE CHART»(/mitsubishi/lancer-evolution/x-2007-2016/remont/testing-diagnostics/#multiport-fuel-injection-mfi-20l-turbo-except-lancer-evolution) < 2.0L TURBO ENGINE > or «DIAGNOSTIC TROUBLE CODE CHART»(/mitsubishi/lancer-evolution/x-2007-2016/remont/testing-diagnostics/#multiport-fuel-injection-mfi-24l-except-lancer-evolution) < 2.4L ENGINE >]. Then go to Step 5 . NO: Go to Step 4.
STEP 4. Check whether the DTC is reset. Erase the DTC. Turn the ignition switch to the "LOCK" (OFF) position. Turn the ignition switch to the "ON" position. Q: Is DTC C2203 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 5. NO: If a trouble is solved, it is determined that there is an intermittent malfunction such as poor engaged connector(s) or open circuit (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTIONS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 5. Check whether the DTC is reset. Erase the DTC. Turn the ignition switch to the "LOCK" (OFF) position. Turn the ignition switch to the "ON" position. Q: Is DTC C2203 set? YES: Return to Step 1 . NO: The procedure is complete.

Scheme 111

Scheme 111: DTC C1608: Implausible diagnosis data

CAUTION

If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to CAN BUS DIAGNOSTICS TABLE ). If the ABS-ECU connector is disconnected or the battery terminal is disconnected when the ignition switch is ON, this DTC may be set. Since the failure information stored in the past is erased after this diagnosis is carried out, reproduce the state of malfunction.

The ABS-ECU stores DTCs and failure information in the EEPROM*.

The ABS-ECU is energized by the solenoid valve power supply circuit (terminal No. 26).

Note. *:EEPROM (Electrical Erasable and Programmable ROM)

This DTC is set when the failure information stored in the EEPROM is not reliable. The failure information stored in the past is not output, and only this DTC is set.
This DTC may occur when ABS-ECU power supply shutdown or drop between ABS-ECU is writing a data to the EEPROM.

Disconnection of the ABS-ECU connector or the battery terminal when the ignition switch is ON
Loose battery terminal
Abnormality in battery
Damaged wiring harness and connectors
ABS-ECU malfunction

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A
MB991974: ABS check harness

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, and then go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC C1608 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Battery check Refer to «BATTERY TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#battery-except-lancer-evolution) . Q: Is the battery in good condition? YES: Go to Step 5 . NO: Go to Step 4.
STEP 4. Charging system check Refer to «GENERATOR OUTPUT LINE VOLTAGE DROP TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/charging-system/#charging-system-except-lancer-evolution) . Q: Is the charging system in good condition? YES: Replace the battery. Then go to Step 9 . NO: Repair or replace the charging system component(s).
STEP 5. Voltage measurement at the A-03 ABS-ECU connector Disconnect the connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and measure the voltage at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the voltage between terminal No. 26 and body ground. OK: Battery positive voltage Q: Is the check result normal? YES: Go to Step 7 . NO: Go to Step 6.
STEP 6. Connector check: A-03 ABS-ECU connector Q: Is the check result normal? YES: The open or short circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 26 and fusible link No. 27. NO: Repair the defective connector.
STEP 7. Resistance measurement at A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool to ABS-ECU. Measure the resistance between terminal No. 1 and body ground, and between terminal No. 14 and body ground. OK: Continuity exists (2 ohms or less) Q: Is the check result normal? YES: Go to Step 9 . NO: Go to Step 8.
STEP 8. Connector check: A-03 ABS-ECU connector Q: Is the check result normal? YES: An open circuit may be present in the ground circuit. Repair the wiring harness between the A-03 ABS-ECU terminal No. 1 and body ground, and between the A-03 ABS-ECU terminal No. 14 and body ground. NO: Repair the defective connector.
STEP 9. Check whether the DTC is reset. Erase the DTC. Turn the ignition switch to the "LOCK" (OFF) position. Turn the ignition switch to the "ON" position. Q: Is DTC C1608 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 10. NO: Go to Step 11 .
STEP 10. Check whether the DTC is reset. Drive the vehicle at 20 km/h or more. Q: Is DTC C1608 set? YES: Return to Step 1 . NO: Go to Step 11.
STEP 11. Check the other DTCs. Drive the vehicle at 12 mph (20 km/h) or higher. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. Q: Is any DTC set? YES: Carry out the applicable troubleshooting for the DTC (Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__diagnostic-trouble-code-chart) ). NO: The procedure is complete.

DTC U0001: Bus-off

CAUTION

If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to CAN BUS DIAGNOSTICS TABLE ). If DTC U0001 is set in ABS-ECU, always diagnose the CAN bus line. If there is any fault in the CAN bus lines, an incorrect DTC may be set. In this case, the set DTC is not highly reliable. Before replacing the ECU, ensure that the communication circuit is normal.

This DTC is set when ABS-ECU has ceased the CAN communication (bus off).

Wiring harness or connector failure of CAN bus line
ABS-ECU malfunction
Other ECU malfunction

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus line. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 2. NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 3 .
STEP 2. Check whether the DTC is reset. Erase the DTC. Q: Is DTC U0001 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: If the trouble symptom is resolved, an intermittent malfunction such as poorly engaged connector(s) or wiring harness is suspected (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 3. Check whether the DTC is reset. Erase the DTC. Q: Is DTC U0001 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC U0100: Engine time-out error; DTC U0141: ETACS time-out error

CAUTION

If the DTCs U0100 and U0141 are set in ABS-ECU, always diagnose the CAN bus line. If there is any fault in the CAN bus lines, an incorrect DTC may be set. In this case, the set DTC is not highly reliable. Before replacing the ECU, ensure that the communication circuit is normal.

ABS-ECU communicates with the engine control module (ECM) and ETACS-ECU via the CAN bus lines.

This DTC is set if ABS-ECU cannot receive the signal sent from other ECU for a certain period.

DTC U0100

Wiring harness or connector failure of CAN bus line
engine control module (ECM) malfunction
ABS-ECU malfunction

DTC U0141

Wiring harness or connector failure of CAN bus line
Malfunction of ETACS-ECU
ABS-ECU malfunction

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus line. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 2. NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 4 .
STEP 2. Check whether the DTC is reset. Q: Is DTC U0100 or U0141 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the other system DTC Use scan tool to check that other DTC is set in the ECU corresponding to the relevant diagnosis. Q: Is other DTC set? YES: Troubleshoot for the relevant DTC. NO: Go to Step 4.
STEP 4. Using scan tool MB991958, check the DTC Use scan tool MB991958 to check if the same DTC (time-out) is set in the other ECU (CAN-C). Q: Is any DTC set? YES (DTC U0100 is set): Replace the engine control module (ECM), and then go to Step 5. YES (DTC U0141 is set): Replace the ETACS-ECU, and then go to Step 5. NO (No DTC is set.): Go to Step 5.
STEP 5. Check whether the DTC is reset. Erase the DTC. Q: Is DTC U0100 or U0141 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: The procedure is complete.

DTC U1415: Variant coding not implemented

CAUTION

When the DTC U1415 is set in ABS-ECU, the DTC may also be set in ETACS-ECU. When the DTC is set in ETACS-ECU, carry out the diagnosis of the DTC for ETACS-ECU first.

ABS-ECU receives the vehicle information stored in the ETACS-ECU via CAN bus lines.
The ABS-ECU stores the tire size information sent from the ETACS.

This DTC is set when the tire size information is not coded to the ABS-ECU.

Variant coding for ETACS-ECU has not been implemented.
Malfunction of ABS-ECU.

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus line. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 2. NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 4 .
STEP 2. Using scan tool MB991958, check the other system DTC Use scan tool to check that the DTC B222C is set in the ETACS-ECU. Q: Is any DTC set? YES: Troubleshoot the relevant DTC, and then go to Step 4 . NO: Go to Step 3.
STEP 3. Check whether the DTC is reset. Erase the DTC. Turn the ignition switch to the "LOCK" (OFF) position. Turn the ignition switch to the "ON" position. Q: Is DTC U1415 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 4. NO: If the trouble symptom is resolved, an intermittent malfunction such as poorly engaged connector(s) or wiring harness is suspected (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 4. Check whether the DTC is reset. Erase the DTC. Turn the ignition switch to the "LOCK" (OFF) position. Turn the ignition switch to the "ON" position. Q: Is DTC U1415 set? YES: Return to Step 1 . NO: The procedure is complete.

DTC U1417: Invalid variant coding value (including wrong assembly)

CAUTION

If DTC U1417 is set in ABS-ECU, always diagnose the CAN bus lines. If there is any fault in the CAN bus lines, an incorrect DTC may be set. In this case, the set DTC is not highly reliable. Before replacing the ECU, ensure that the communication circuit is normal. When DTC U1417 is set in ABS-ECU, the DTC may also be set in ETACS-ECU. When the DTC is set in ETACS-ECU, carry out the diagnosis of the DTC for ETACS-ECU first.

ABS-ECU receives the vehicle information stored in the ETACS-ECU via CAN bus lines.

ABS-ECU communicates with ETACS-ECU via CAN bus lines. This DTC is set when there is difference between the vehicle information from the ETACS-ECU and the vehicle information stored in the ABS-ECU.

Malfunction of ETACS-ECU
ETACS-ECUs have been interchanged between two vehicles.
ABS-ECU malfunction
ABS-ECUs have been interchanged between two vehicles.

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus line. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 3 . NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines Q: Is DTC U1417 set? YES: Go to Step 3. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the other system DTC Use scan tool to check whether the ETACS-ECU-related or engine ECU-related DTC is set or not. Q: Is any DTC set? YES: Troubleshoot for the relevant DTC. NO: Go to Step 4.
STEP 4. Check coding data Refer to «CODING LIST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__coding-list) . Q: Is the check result normal? YES: Go to Step 5. NO: Replace ETACS-ECU (Refer to «ETACS-ECU»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#electronic-time-and-alarm-control-system-etacs-except-lancer-evolution) ). Then go to Step 7 .
STEP 5. Check part number of ABS-ECU Check the part number of ABS-ECU. Q: Is the check result normal? YES: Go to Step 6. NO: Replace the hydraulic unit (ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 7 .
STEP 6. Check whether the DTC is reset. Erase the DTC. Q: Is DTC U1417 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 7. NO: The procedure is complete.
STEP 7. Check whether the DTC is reset. Erase the DTC. Q: Is the DTC U1417 set? YES: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 8. NO: The trouble can be an intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
STEP 8. Check whether the DTC is reset. Erase the DTC. Q: Is the DTC U1417 set? YES: Return to Step 1 . NO: The procedure is complete.

SYMPTOM CHART

CAUTION

ABS may operate in the following conditions without hard braking: Slippery road surface, high-speed turn, and bumpy road surface. When asking the customers, confirm that they have/have not encountered ABS operation in corresponding conditions. During ABS operation, the brake pedal is pulled forward gradually, and noise occurs at the same time. This is because the brake line pressure varies intermittently to prevent the wheel lock, and not a system malfunction. During diagnosis, a DTC associated with other system may be set when the ignition switch is turned on with connector(s) disconnected. On completion, check all systems for DTC(s). If DTC(s) are set, erase them all.

Trouble symptom	Inspection procedure No.	Reference
Scan tool cannot communicate only with ABS-ECU.	1	INSPECTION PROCEDURE 1: SCAN TOOL CANNOT COMMUNICATE ONLY WITH ABS-ECU.
Brake warning light stays ON with the parking brake lever released.	2	INSPECTION PROCEDURE 2: BRAKE WARNING LIGHT STAYS ON WITH THE PARKING BRAKE LEVER RELEASED.
ABS warning light does not illuminate when ignition switch is turned to the ON position (Engine stopped).	3	INSPECTION PROCEDURE 3: ABS WARNING LIGHT DOES NOT ILLUMINATE WHEN IGNITION SWITCH IS TURNED TO THE ON POSITION (ENGINE STOPPED).
Brake warning light does not illuminate when the ignition switch is turned to ON position (Engine stopped).	4	INSPECTION PROCEDURE 4: BRAKE WARNING LIGHT DOES NOT ILLUMINATE WHEN THE IGNITION SWITCH IS TURNED TO ON POSITION (ENGINE STOPPED).
ABS warning light stays ON after the engine is started.	5	INSPECTION PROCEDURE 5: ABS WARNING LIGHT STAYS ON AFTER THE ENGINE IS STARTED.
Abnormality in brake operation	6	INSPECTION PROCEDURE 6: ABNORMALITY IN BRAKE OPERATION
ABS system inoperative	7	INSPECTION PROCEDURE 7: ABS SYSTEM INOPERATIVE.
ABS-ECU power supply circuit system	8	INSPECTION PROCEDURE 8: ABS-ECU POWER SUPPLY CIRCUIT SYSTEM
ABS operate too frequently.	9	INSPECTION PROCEDURE 9: ABS OPERATE TOO FREQUENTLY.

SYMPTOM REFERENCE CHART

Inspection Procedure 1: Scan tool cannot communicate only with ABS-ECU

CAUTION

If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to CAN BUS DIAGNOSTICS TABLE ). Whenever ECU is replaced, ensure that the CAN bus lines are normal. If the power is supplied with the ground circuit of CAN communication device open circuited, an electric potential abnormality may occur to the CAN bus lines.

COMMENTS ON TROUBLE SYMPTOM

When scan tool cannot communicate with the ABS system, the CAN bus line, ABS-ECU power supply circuit system, or ABS-ECU may be faulty.

Damaged wiring harness and connectors
ABS-ECU malfunction
Wrong routing of M.U.T.-III harness
Abnormality in battery or generator
Abnormality in power supply voltage to ABS-ECU
ECU malfunction of other system

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus line. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Check the power supply circuit, and repair if necessary (Refer to «INSPECTION PROCEDURE 8: ABS-ECU POWER SUPPLY CIRCUIT SYSTEM»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ).

Scheme 112

Scheme 112: Inspection Procedure 2: Brake warning light stays ON with the parking brake lever released

CAUTION

When the parking brake switch is turned ON, the combination meter terminal No. 4 is grounded, and then the brake warning light illuminates.
When reduction of the brake fluid amount is detected, the brake fluid level switch is turned from ON to OFF. ETACS-ECU monitors the brake fluid level switch, and instructs the combination meter via the CAN bus line to illuminate the brake warning light.

This may be caused by the ground fault in the parking brake switch circuit and the open circuit in the brake fluid level switch circuit.

The brake pad thickness is at the limit value or less.
The brake fluid amount is at the "LOWER" level or lower.
Poor adjustment of the parking brake lever
Damaged wiring harness and connectors
Parking brake switch malfunction
Brake fluid level switch malfunction
Combination meter malfunction
Malfunction of ETACS-ECU

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus line. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 2. NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, and then go to Step 2.
STEP 2. DTC check after resetting CAN bus lines Use scan tool to check that the DTC is set in the combination meter and ETACS-ECU. Q: Is any DTC set? YES: Carry out the diagnosis for the DTC. NO: Go to Step 3.
STEP 3. Brake fluid level check Check that the brake fluid is filled up to the "MIN" level or higher. Q: Is the check result normal? YES: Go to Step 5 . NO: Go to Step 4.
STEP 4. Brake pad check Refer to «BRAKE PAD CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/mechanical-hydraulic/#basic-brake-system-except-lancer-evolution__brake-pad-check) . Q: Is the check result normal? YES: Fill the brake fluid up to the "MAX" level. Then go to Step 18 . NO: Replace the brake pad (Refer to «BRAKE PAD REPLACEMENT < EXCEPT RALLIART >»(/mitsubishi/lancer-evolution/x-2007-2016/remont/mechanical-hydraulic/#basic-brake-system-except-lancer-evolution__brake-pad-replacement-except-ralliart) ). Then go to Step 18 .
STEP 5. Brake fluid level switch check Refer to «BRAKE FLUID LEVEL SWITCH CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/mechanical-hydraulic/#basic-brake-system-except-lancer-evolution__brake-fluid-level-switch-check) . Q: Is the check result normal? YES: Go to Step 6. NO: Replace the reservoir tank assembly (Refer to «MASTER CYLINDER ASSEMBLY AND BRAKE BOOSTER ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/mechanical-hydraulic/#basic-brake-system-except-lancer-evolution) ). Then go to Step 18 .
STEP 6. Connector check: A-06 brake fluid level switch connector, C-312 ETACS-ECU connector Q: Is the check result normal? YES: Go to Step 7. NO: Repair the damaged connector.
STEP 7. Measure the voltage at A-06 brake fluid level switch connector. Disconnect the connector, and measure at the wiring harness side. Turn the ignition switch to the "ON" position. Measure the voltage between the terminal No. 1 and the body ground. OK: Approximately system voltage Q: Is the check result normal? YES: Go to Step 10 . NO: Go to Step 8.
STEP 8. Measure the voltage at the C-312 ETACS-ECU connector. CAUTION: With the C-312 ETACS-ECU connector kept connected, disconnect the A-06 brake fluid level switch connector. Turn the ignition switch to the "ON" position. Measure the voltage between terminal No. 1 and the body ground by backprobing. OK: Approximately system voltage Q: Is the check result normal? YES: Go to Step 9. NO: Replace the ETACS-ECU (Refer to «ETACS-ECU»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#electronic-time-and-alarm-control-system-etacs-except-lancer-evolution) ). Then go to Step 18 .
STEP 9. Wiring harness check: between A-06 brake fluid level switch connector and C-312 ETACS-ECU connector Check for open circuit in the harness wire between A-06 brake fluid level switch connector terminal No. 1 and C-312 ETACS-ECU connector terminal No. 1. Q: Is the check result normal? YES: Go to Step 16 . NO: Repair the wiring harness. Then go to Step 18 .
STEP 10. Wiring harness check: between A-06 brake fluid level switch connector and body ground Check for open circuit in the harness wire between A-06 brake fluid level switch connector terminal No. 2 and body ground. Q: Is the check result normal? YES: Go to Step 11. NO: Repair the wiring harness.
STEP 11. Parking brake lever stroke check Refer to «PARKING BRAKE LEVER STROKE CHECK AND ADJUSTMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/parking-brake-system/#parking-brakes-except-lancer-evolution__parking-brake-lever-stroke-check-and) . Q: Is the check result normal? YES: Go to Step 12. NO: Adjust the parking brake lever stroke (Refer to «PARKING BRAKE LEVER STROKE CHECK AND ADJUSTMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/parking-brake-system/#parking-brakes-except-lancer-evolution__parking-brake-lever-stroke-check-and) ). Then go to Step 18 .
STEP 12. Parking brake switch check Refer to «PARKING BRAKE SWITCH CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/parking-brake-system/#parking-brakes-except-lancer-evolution__parking-brake-switch-check) . Q: Is the check result normal? YES: Go to Step 13. NO: Replace the parking brake switch (Refer to «PARKING BRAKE LEVER»(/mitsubishi/lancer-evolution/x-2007-2016/remont/parking-brake-system/#parking-brakes-except-lancer-evolution) ). Then go to Step 18 .
STEP 13. Connector check: C-117 parking brake switch connector Q: Is the check result normal? YES: Go to Step 14. NO: Repair the damaged connector.
STEP 14. Measure the voltage at C-117 parking brake switch connector. Disconnect the connector, and measure at the wiring harness side. Turn the ignition switch to the "ON" position. Measure the voltage between the terminal No. 1 and the body ground. OK: Approximately system voltage Q: Is the check result normal? YES: Go to Step 17 . NO: Go to Step 15.
STEP 15. Connector check: C-04 Combination meter connector, C-21 intermediate connector Q: Is the check result normal? YES: Go to Step 16. NO: Repair the defective connector.
STEP 16. Wiring harness check: between the C-04 combination meter connector and the C-117 parking brake switch connector Check for short circuit in the harness wire between the C-04 combination meter connector terminal No. 4 and the C-117 parking brake switch connector terminal No. 1. Q: Is the check result normal? YES: Go to Step 17. NO: Repair the wiring harness. Then go to Step 18 .
STEP 17. Retest the system. Q: Does the brake warning light turn ON and OFF normally according to the parking brake lever operation? YES: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ). NO: Replace the combination meter assembly (Refer to «COMBINATION METER»(/mitsubishi/lancer-evolution/x-2007-2016/remont/gauges-instrument-panels/#combination-meter-except-lancer-evolution) ). Then go to Step 18.
STEP 18. Retest the system. Q: Does the brake warning light turn ON and OFF normally according to the parking brake lever operation? YES: The procedure is complete. NO: Return to Step 1 .

Inspection Procedure 3: ABS warning light does not illuminate when ignition switch is turned to the ON position (engine stopped)

CAUTION

SYSTEM OPERATION

ABS-ECU sends the illumination request signal of the ABS warning light to the combination meter through ETACS-ECU via CAN communication.
ABS-ECU illuminates the ABS warning light via ETACS-ECU for approximately 3 seconds for valve check with the ignition switch turned to the ON position.

This may be caused by faults in the CAN bus line, ETACS-ECU, combination meter or ABS-ECU.

Damaged wiring harness and connectors
Malfunction of ETACS-ECU
Combination meter malfunction
ABS-ECU malfunction
Malfunction of coding data for ETACS-ECU

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus line. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 2. NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). Then go to Step 9 .
STEP 2. Using scan tool MB991958, check the DTC Use scan tool to check the DTC for the ABS system. Q: Is the DTC set? YES: Carry out the diagnosis for the DTC. (Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__diagnostic-trouble-code-chart) .) NO: Go to Step 3.
STEP 3. Using scan tool MB991958, check the actuator test Perform the following actuator test by the combination meter system, and check if the ABS warning light illuminates (Refer to «ACTUATOR TEST TABLE < VEHICLES WITHOUT COLOR LIQUID CRYSTAL DISPLAY >»(/mitsubishi/lancer-evolution/x-2007-2016/remont/gauges-instrument-panels/#combination-meter-except-lancer-evolution) ). Item No.07: Indicator 1 Q: Is the check result normal? YES: Go to Step 4. NO: Troubleshoot the combination meter (Refer to «TROUBLE SYMPTOM CHART»(/mitsubishi/lancer-evolution/x-2007-2016/remont/gauges-instrument-panels/#combination-meter-except-lancer-evolution__trouble-symptom-chart) ). Then go to Step 9 .
STEP 4. Check coding data Use scan tool to check if coding data stored in ETACS-ECU is normal (Refer to «CODING LIST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__coding-list) ). Q: Is the check result normal? YES: Go to Step 6 . NO: Go to Step 5.
STEP 5. ETACS-ECU variant coding Perform the variant coding to the ETACS-ECU. Q: Does variant coding succeed? YES: Go to Step 9 . NO: Replace the ETACS-ECU (Refer to «ETACS-ECU»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#electronic-time-and-alarm-control-system-etacs-except-lancer-evolution) ), and then go to Step 9 .
STEP 6. Scan tool other system DTC Using scan tool, check that the DTC U0141 is not set by the combination meter system. Q: Is the DTC set? YES: Troubleshoot the combination meter (Refer to «TROUBLESHOOTING»(/mitsubishi/lancer-evolution/x-2007-2016/remont/gauges-instrument-panels/#combination-meter-except-lancer-evolution) ), and then go to Step 9 . NO: Go to Step 7.
STEP 7. Scan tool other system DTC Using scan tool, check that the DTC U0121 is not set by the ETACS system. Q: Is the DTC set? YES: Troubleshoot the ETACS-ECU (Refer to «/TROUBLESHOOTING»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#electronic-time-and-alarm-control-system-etacs-except-lancer-evolution) ), and then go to Step 9 . NO: Go to Step 8.
STEP 8. Retest the system. Q: Does the ABS warning light turn ON and OFF normally? YES: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ). NO: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9.
STEP 9. Retest the system. Q: Does the ABS warning light turn ON and OFF normally? YES: The procedure is complete. NO: Return to Step 1 .

Inspection Procedure 4: Brake warning light does not illuminate when the ignition switch is turned to ON position (engine stopped)

CAUTION

ABS-ECU sends the illumination request signal of the break warning lamp to the combination meter through ETACS-ECU via the CAN communication.
ABS-ECU illuminates brake warning lamp via ETACS-ECU for approximately 3 seconds for bulb check with the ignition switch turned to the ON position.

This may be caused by faults in the CAN bus line, ETACS-ECU, combination meter or ABS-ECU.

Damaged wiring harness and connectors
Malfunction of ETACS-ECU
Combination meter malfunction
ABS-ECU malfunction

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus line. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 2. NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ).
STEP 2. Scan tool DTC Use scan tool to check the DTC for the ABS system. Q: Is the DTC set? YES: Carry out the diagnosis for the DTC (Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__diagnostic-trouble-code-chart) ). NO: Go to Step 3.
STEP 3. Scan tool other system DTC Using scan tool, check that the DTC U0141 is not set by the combination meter system. Q: Is the DTC set? YES: Troubleshoot the combination meter (Refer to «TROUBLE SYMPTOM CHART»(/mitsubishi/lancer-evolution/x-2007-2016/remont/gauges-instrument-panels/#combination-meter-except-lancer-evolution__trouble-symptom-chart) ), and then go to Step 5 . NO: Go to Step 4.
STEP 4. Scan tool other system DTC Using scan tool, check that the DTC U0121 is not set by the ETACS system. Q: Is the DTC set? YES: Troubleshoot the ETACS (Refer to «/TROUBLESHOOTING»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#electronic-time-and-alarm-control-system-etacs-except-lancer-evolution) ), and then go to Step 5. NO: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ), and then go to Step 5.
STEP 5. Retest the system. Q: Does the brake warning light turn ON and OFF normally? YES: The procedure is complete. NO: Return to Step 1 .

Inspection Procedure 5: ABS warning light stays ON after the engine is started

CAUTION

ABS-ECU sends the illumination request signal of the ABS warning light to the combination meter through ETACS-ECU via CAN communication.
ABS-ECU illuminates the ABS warning light via ETACS-ECU for approximately 3 seconds for valve check with the ignition switch turned to the ON position.

This may be caused by faults in the CAN bus line, ETACS-ECU, combination meter or ABS-ECU.

Damaged wiring harness and connectors
Malfunction of ETACS-ECU
Malfunction of combination meter
Malfunction of ABS-ECU NOTE: Due to the abnormality in the supply voltage, the DTC may not be set even when the ABS warning light is illuminated.

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus line. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 2. NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). Then go to Step 6 .
STEP 2. Scan tool DTC Use scan tool to check the DTC for the ABS system. Q: Is the DTC set? YES: Carry out the diagnosis for the diagnostic trouble code (Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__diagnostic-trouble-code-chart) ). NO: Go to Step 3.
STEP 3. Scan tool other system DTC Using scan tool, check that the DTC U0141 is not set by the combination meter system. Q: Is any DTC set? YES: Troubleshoot the combination meter (Refer to «TROUBLESHOOTING»(/mitsubishi/lancer-evolution/x-2007-2016/remont/gauges-instrument-panels/#combination-meter-except-lancer-evolution) ), and then go to Step 6 . NO: Go to Step 4.
STEP 4. Scan tool other system DTC Using scan tool, check that the DTC U0121 is not set by the ETACS system. Q: Is any DTC set? YES: Perform troubleshooting on ETACS-ECU. (Refer to «/TROUBLESHOOTING»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#electronic-time-and-alarm-control-system-etacs-except-lancer-evolution) ). Then go to Step 6 . NO: Go to Step 5.
STEP 5. Retest the system. Drive the vehicle more at 6 mph (10 km/h) or high. Q: Does the ABS warning light turn ON and OFF normally? YES: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ). NO: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 6.
STEP 6. Retest the system. Drive the vehicle more at 6 mph (10 km/h) or high. Q: Does the ABS warning lamp turn ON and OFF normally? YES: The procedure is complete. NO: Return to Step 1 .

Inspection Procedure 6: Abnormality in brake operation

CAUTION

Although the cause of the trouble cannot be clearly resolved since it depends on the running status and road surface condition, the malfunction of the hydraulic circuit may occur if any DTC is not detected.

Hydraulic unit (HU) malfunction

DIAGNOSTIC PROCEDURE

STEP 1. Hydraulic unit (integrated with ABS-ECU) check Refer to «HYDRAULIC UNIT CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__hydraulic-unit-check) . Q: Is the check result normal? YES: Go to Step 2. NO: Connect the brake tubes correctly, repair the external brake lines, or replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ).
STEP 2. Retest the system. Q: Can any fault be found with the brake operation? YES: Check the brake system related components except ABS. NO: The procedure is complete.

Inspection Procedure 7: ABS system inoperative

CAUTION

In case of this trouble symptom, ABS system operation may be disabled. DTC may be set by the ABS system using scan tool.

Low battery voltage
Wiring harness or connector failure of CAN bus line
The ABS-ECU is defective.
Different ETACS-ECU, abnormal variant coding information

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus line. Use scan tool to diagnose the CAN bus lines. Q: Is the check result normal? YES: Go to Step 2. NO: Repair the CAN bus lines (Refer to «CAN BUS DIAGNOSTICS TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__can-bus-diagnostics-table) ). On completion, go to Step 2.
STEP 2. DTC check after resetting CAN bus lines Q: Is any DTC set? YES: Carry out the relevant troubleshooting (Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__diagnostic-trouble-code-chart) ). NO: Go to Step 3.
STEP 3. Hydraulic unit (integrated with ABS-ECU) check Refer to «HYDRAULIC UNIT CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__hydraulic-unit-check) . Q: Is the check result normal? YES: Go to Step 4. NO: Repair the brake pipe or replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ).
STEP 4. Operation check Q: Does ABS operate normally? YES: The procedure is complete. NO: Check the brake system related components except the ABS system.

ABS-ECU contains the power supply circuit (terminal No. 26) for the solenoid valve. The solenoid valve is energized by the valve relay, which is incorporated in ABS-ECU.
ABS-ECU contains the power supply circuit (terminal No. 13) for the pump motor. The pump motor is energized by the motor relay, which is incorporated in ABS-ECU.
ABS-ECU contains the power supply circuit (terminal No. 7) for ABS-ECU. When the ignition switch (IG1) is turned ON, the voltage is applied to the relay incorporated in ETACS-ECU to turn ON the relay, and the power is supplied from fusible link No. 34 through multi-purpose fuse No. 12.
When malfunction occurs in ABS-ECU power supply, the communication with scan tool becomes unavailable.

Damaged wiring harness and connectors
Malfunction of fuse and fusible link
Improper tightening of battery terminal
Improper tightening of ground bolt
Battery failure
Charging system failed
Malfunction of ABS-ECU

Required Special Tools

MB991958 Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827 M.U.T.-III USB Cable MB991910 M.U.T.-III Main Harness A MB991974: ABS check harness

Scheme 113

Scheme 114

Scheme 115

Scheme 116

Scheme 117

Scheme 118

Scheme 119

STEP 1. Battery check Refer to «BATTERY TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#battery-except-lancer-evolution) . Q: Is the battery in good condition? YES: Go to Step 3 . NO: Charge or replace the battery. Then go to Step 2.
STEP 2. Charging system check Refer to «GENERATOR OUTPUT LINE VOLTAGE DROP TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/charging-system/#charging-system-except-lancer-evolution) . Q: Is the charging system in good condition? YES: Go to Step 3. NO: Repair or replace the charging system component(s).
STEP 3. Connector check: A-03 ABS-ECU connector Q: Is the check result normal? YES: Go to Step 4. NO: Repair the damaged connector.
STEP 4. Fusible link check: Check the fusible link No. 27. Q: Is the check result normal? YES: Go to Step 6 . NO: Go to Step 5.
STEP 5. Resistance measurement at A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool ABS check harness (MB991974) to ABS-ECU. Disconnect the fusible link No. 27. Measure the resistance between the terminal No. 26 and the body ground. OK: No continuity Q: Is the check result normal? YES: Replace the fusible link No. 27. Then go to Step 27 . NO: The short circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 26 and the fusible link No. 27, and then replace the fusible link No. 27. Then go to Step 27 .
STEP 6. Check the fusible link No. 26. Q: Is the check result normal? YES: Go to Step 8 . NO: Go to Step 7.
STEP 7. Resistance measurement at A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool ABS check harness (MB991974) to ABS-ECU. Measure the resistance between the terminal No. 13 and the body ground. OK: No continuity Q: Is the check result normal? YES: Replace the fusible link No. 26. Then go to Step 27 . NO: The short circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 13 and the fusible link No. 26, and then replace the fusible link No. 26. Then go to Step 27 .
STEP 8. Check the fuse No. 12 Visually check for open circuit in the fuse No. 12. Q: Is the check result normal? YES: Go to Step 11 . NO: Go to Step 9.
STEP 9. Connector check: C-128 intermediate connector, C-317 ETACS-ECU connector Q: Is the check result normal? YES: Go to Step 10. NO: Repair the defective connector.
STEP 10. Resistance measurement at A-03 ABS-ECU connector Disconnect the C-317 ETACS-ECU connector. Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool ABS check harness (MB991974) to ABS-ECU. Measure the resistance between the terminal No. 7 and the body ground. OK: No continuity Q: Is the check result normal? YES: Replace the fuse No. 12. Then go to Step 27 . NO: The short circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 7 and the C-317 ETACS-ECU connector terminal No. 5, and then replace the fuse No. 12. Then go to Step 27 .
STEP 11. Fusible link check: Check the fusible link No. 34. Q: Is the check result normal? YES: Go to Step 14 . NO: Go to Step 12.
STEP 12. Connector check: C-309 ETACS-ECU connector Q: Is the check result normal? YES: Go to Step 13. NO: Repair the damaged connector.
STEP 13. Resistance measurement at C-309 ETACS-ECU connector Removal the fusible link No. 34. Disconnect the C-309 ETACS-ECU connector, and then measure the resistance at the connector side. Measure the resistance between the terminal No. 1 and the body ground. OK: No continuity Q: Is the check result normal? YES: Replace the fusible link No. 34. Then go to Step 27 . NO: The short circuit may be present in the power supply circuit. Repair the wiring harness between the C-309 ETACS-ECU connector terminal No. 1 and the fusible link No. 34, and then replace the fusible link No. 34. Then go to Step 27 .
STEP 14. Voltage measurement at the A-03 ABS-ECU connector Disconnect the ASC-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the voltage at the special tool connector side. NOTE: Do not connect the special tool ABS check harness (MB991974) to ASC-ECU. Measure the voltage between terminal No. 26 and body ground. OK: Approximately system voltage Q: Is the check result normal? YES: Go to Step 15. NO: The open circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 26 and the fusible link No. 27. Then go to Step 27 .
STEP 15. Voltage measurement at the A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the voltage at the special tool connector side. NOTE: Do not connect the special tool ABS check harness (MB991974) to ABS-ECU. Measure the voltage between terminal No. 13 and body ground. OK: Approximately system voltage Q: Is the check result normal? YES: Go to Step 16. NO: The open circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 13 and the fusible link No. 26. Then go to Step 27 .
STEP 16. Measure the voltage at the C-309 ETACS-ECU connector. Disconnect the connector, and measure at the wiring harness-side connector. Measure the voltage between the terminal No. 1 and the body ground. OK: Approximately system voltage Q: Is the check result normal? YES: Go to Step 17. NO: The open circuit may be present in the power supply circuit. Repair the wiring harness between the C-309 ETACS-ECU connector terminal No. 1 and fusible link No. 34. Then go to Step 27 .
STEP 17. Connector check: C-317 ETACS-ECU connector Q: Is the check result normal? YES: Go to Step 18. NO: Repair the damaged connector.
STEP 18. Measure the voltage at the C-317 ETACS-ECU connector. Measure by backprobing without disconnecting the connector. Turn the ignition switch to the "ON" position. Measure the voltage between the terminal No. 6 and the body ground. OK: Approximately system voltage Q: Is the check result normal? YES: Go to Step 21 . NO: Go to Step 19.
STEP 19. Connector check: C-212 ignition switch connector Q: Is the check result normal? YES: Go to Step 20. NO: Repair the damaged connector.
STEP 20. Check the harness wire between C-212 ignition switch connector terminal No. 2 and C-317 ETACS-ECU connector terminal No. 6. Check the communication lines for open circuit and short circuit. Q: Is the check result normal? YES: Diagnosis the ignition switch (Refer to «TROUBLE SYMPTOM CHART»(/mitsubishi/lancer-evolution/x-2007-2016/remont/ignition-switchsteering-lock/#ignition-switch-except-lancer-evolution__trouble-symptom-chart) ). NO: Repair the wiring harness, and then go to Step 27 .
STEP 21. Measure the voltage at the C-317 ETACS-ECU connector. Measure at ETACS-ECU side connector. NOTE: Do not disconnect the connector. Turn the ignition switch to the "ON" position. Measure the voltage between terminal No. 5 and the body ground by backprobing. OK: Approximately system voltage Q: Is the check result normal? YES: Go to Step 23 . NO: Go to Step 22.
STEP 22. Check the harness wire between A-03 ABS-ECU connector terminal No. 7 and C-317 ETACS-ECU connector terminal No. 5. Check the harness wire for short circuit. NOTE: Prior to the wiring harness inspection, check intermediate connector C-128, and repair if necessary. Q: Is the check result normal? YES: Replace the ETACS-ECU (Refer to «ETACS-ECU»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#electronic-time-and-alarm-control-system-etacs-except-lancer-evolution) ), and then go to Step 27 . NO: Repair the wiring harness, and then go to Step 27 .
STEP 23. Connector check: C-128 intermediate connector Q: Is the check result normal? YES: Go to Step 24. NO: Repair the damaged connector.
STEP 24. Voltage measurement at A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool ABS check harness (MB991974) to ABS-ECU. Turn the ignition switch to the "ON" position. Measure the voltage between terminal No. 7 and body ground. OK: Approximately system voltage Q: Is the check result normal? YES: Go to Step 25. NO: The open circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ABS-ECU connector terminal No. 7 and the C-317 ETACS-ECU connector terminal No. 5. Then go to Step 27 .
STEP 25. Resistance measurement at A-03 ABS-ECU connector Disconnect the ABS-ECU connector, connect special tool ABS check harness (MB991974) to the harness-side connector, and then measure the resistance at the special tool connector side. NOTE: Do not connect the special tool ABS check harness (MB991974) to ABS-ECU. Measure the resistance between the terminal No. 1 and the body ground, and between the terminal No. 14 and the body ground OK: Continuity exists (2 ohms or less) Q: Is the check result normal? YES: Go to Step 26. NO: An open circuit may be present in the ground circuit. Repair the wiring harness between the A-03 ASC-ECU connector terminal No. 1 and the body ground, and between the A-03 ASC-ECU connector terminal No. 14 and the body ground. Then go to Step 27 .
STEP 26. Retest the system. Make sure that the M.U.T.-III cable is properly connected and the V.C.I. switch is ON, Q: Is the communication with scan tool possible? YES: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ). NO: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 27.
STEP 27. Retest the system. Q: Is the communication with scan tool possible? YES: Return to Step 1 . NO: The procedure is complete.

Although the cause of the trouble cannot be clearly resolved since it depends on the running status and road surface condition, the malfunction of the hydraulic circuit may occur if any diagnostic trouble code is not detected.
If wheels and tires other than the ones with genuine specified size are mounted, the ABS may be activated prematurely.
If a non-genuine braking device or non-genuine impact reduction device is mounted, the ABS may be activated prematurely.

Mounting of wheels and tires other than with genuine specified size
Tire pressure abnormality
Tire wear and deterioration
Mounting of non-genuine braking device or impact reduction device
Wheel alignment abnormality
Malfunction of brake related parts
ABS-ECU malfunction
Malfunction of hydraulic circuit
External radio wave noise interference

DIAGNOSIS PROCEDURE

STEP 1. Check the wheels and the tires. Carry out the following check. Size check of wheels and tires Tire wear and deterioration statuses Check the tire pressure. NOTE: For the tire pressure, refer to the tire pressure label attached to the lower section of driver's side door striker. Q: Is the check result normal? YES: Go to Step 2. NO: Correct the wheels and tires in good condition. Then go to Step 9 .
STEP 2. DTC check Use scan tool to check the DTC for the ABS system (Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__diagnostic-trouble-code-chart) ). Q: Is the check result normal? YES: Go to Step 3. NO: Carry out the diagnosis for the DTC (Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__diagnostic-trouble-code-chart) ). Then go to Step 9 .
STEP 3. Check of brake system related components other than hydraulic unit (integrated with ABS-ECU) At the same time with the following checks, also check that no parts other than the genuine parts are mounted. Brake pad check (Refer to «BRAKE PAD CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/mechanical-hydraulic/#basic-brake-system-except-lancer-evolution__brake-pad-check) ). Brake disk runout check (Refer to «BRAKE DISC RUN-OUT CHECK AND CORRECTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/mechanical-hydraulic/#basic-brake-system-except-lancer-evolution) ). Brake drag force check (Refer to «FRONT DISC BRAKE ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/mechanical-hydraulic/#basic-brake-system-except-lancer-evolution) < Front > or «REAR DISC BRAKE ASSEMBLY»(/mitsubishi/lancer-evolution/x-2007-2016/remont/mechanical-hydraulic/#basic-brake-system-except-lancer-evolution) < Rear >). Q: Is the check result normal? YES: Go to Step 4. NO: Repair or replace the part(s) having damage or other problems. Then go to Step 9 .
STEP 4. Wheel alignment check At the same time with the following checks, also check that no parts other than the genuine parts are mounted. Front wheel alignment check (Refer to «FRONT WHEEL ALIGNMENT CHECK AND ADJUSTMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/suspension-front/#front-suspension-wheel-alignment-except-lancer-evolution__front-wheel-alignment-check-and-adjustment) ). Rear wheel alignment check (Refer to «REAR WHEEL ALIGNMENT CHECK AND ADJUSTMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/suspension-rear/#rear-suspension-wheel-alignment-except-lancer-evolution__rear-wheel-alignment-check-and-adjustment) ). Q: Is the check result normal? YES: Go to Step 5. NO: Repair or replace the part(s) having damage or other problems. Then go to Step 9 .
STEP 5. M.U.T.-III data list Check the following data list (Refer to «DATA LIST REFERENCE TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__data-list-reference-table) ). Item No.01: FL wheel speed sensor Item No.02: FR wheel speed sensor Item No.03: RL wheel speed sensor Item No.04: RR wheel speed sensor Q: Is the check result normal? YES: Go to Step 7 . NO: Go to Step 6.
STEP 6. Wheel speed sensor check Check that no non-genuine electronic device or no wiring harness of other than genuine electronic device is mounted near the wheel speed sensor (at wheel speed detection section and wiring harness section) (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Q: Is the check result normal? YES: Go to Step 7. NO: Remove the non-genuine electronic device or the wiring harness of non-genuine electronic device. Then go to Step 9 .
STEP 7. Hydraulic unit check Carry out the following actuator tests, and check if they work normally (Refer to «DATA LIST REFERENCE TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution__data-list-reference-table) ). Item No.01: FL wheel ABS Item No.02: FR wheel ABS Item No.03: RL wheel ABS Item No.04: RR wheel ABS Q: Is the check result normal? YES: Go to Step 8. NO: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9 .
STEP 8. ABS operation check Q: Is the check result normal? YES: Intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ). NO: Replace the hydraulic unit (integrated with ABS-ECU) (Refer to «HYDRAULIC UNIT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ). Then go to Step 9.
STEP 9. ABS operation check Q: Is the check result normal? YES: The procedure is complete. NO: Return to Step 1 .

DATA LIST REFERENCE TABLE

The following items can be read by the scan tool from the ABS-ECU input data.

The following items of ECU input data can be read using scan tool.

The system is normal. DATA LIST REFERENCE TABLE Item No. Check item Check conditions Normal conditions 01 FL wheel speed sensor Perform a test run of the vehicle. The speedometer display and the scan tool display almost agree with each other. < During stop: approximately 0.4 mph (0.7 km/h) > 02 FR wheel speed sensor 03 RL wheel speed sensor 04 RR wheel speed sensor 05 Power supply voltage Battery positive voltage (10 to 18 V ABS operatable range) 07 Brake switch (input) The brake pedal is released. OFF The brake pedal is depressed. ON 14 Brake switch The brake pedal is depressed. ON The brake pedal is released. OFF 87 Ignition switch (input) Ignition switch is "ON" position ON 88 Vehicle speed Perform a test run of the vehicle. The speedometer display and the scan tool display almost agree with each other. 105 Power supply voltage (input) Battery positive voltage (10 to 18 V ABS operatable range)
System shutdown by ECU While ABS-ECU is disabled by the diagnostic function, the scan tool displayed data is different from the actual measurement.

ACTUATOR TEST REFERENCE TABLE

Using scan tool, the following actuators can be forcibly operated

Note. ABS is operated by ABS-ECU. When ABS-ECU is disabled due to the fail-safe function, the actuator test cannot be performed. The actuator test can be performed only when the vehicle is stationary. While the actuator test is performed, the ABS warning light flashes at a rate of 2 Hz. After the actuator test has been performed, the brake warning light and ABS warning light illuminate until the ignition switch is turned to ON again or the communication between scan tool and ABS-ECU is terminated.

Item No.	Scan tool display	Driven component
01	FL wheel ABS drive	Solenoid valve for the corresponding wheel of the hydraulic unit and pump motor (simplified inspection mode)
02	FR wheel ABS drive
03	RL wheel ABS drive
04	RR wheel ABS drive

ACTUATOR TEST SPECIFICATIONS TABLE

Scheme 120

Scheme 120: Operation pattern of items 01 to 04

TERMINAL VOLTAGE CHECK

Required Special Tools

MB991974: ABS Check Harness

Connect the special tool ABS check harness (MB991974) to measure the voltage between each check connector terminal and the ground terminal (No. 1 or 14).

Terminal No.	Check item	Check conditions	Normal conditions
7	ABS-ECU power supply	Ignition switch: ON	Battery positive voltage
7	ABS-ECU power supply	Ignition switch: OFF	1 V or less
13	Motor power supply	Ignition switch: ON (OFF)	Battery positive voltage
16	Wheel speed sensor (RR) power supply	Ignition switch: ON	Battery positive voltage
18	Wheel speed sensor (FL) power supply	Ignition switch: ON	Battery positive voltage
22	Wheel speed sensor (FR) power supply	Ignition switch: ON	Battery positive voltage
24	Wheel speed sensor (RL) power supply	Ignition switch: ON	Battery positive voltage
26	Solenoid valve power supply	Ignition switch: ON (OFF)	Battery positive voltage

ECU TERMINALS VOLTAGE CHECK

RESISTANCE AND CONTINUITY BETWEEN HARNESS-SIDE CONNECTOR TERMINALS

Required Special Tools

MB991974: ABS Check Harness

When performing the continuity check, turn the ignition switch to LOCK (OFF) position, connect the special tool ABS check harness (MB991974) as shown in the figure, and disconnect the ABS-ECU connector.
Check for continuity between terminals shown in the table below.
Terminal layout is shown in the figure. CONTINUITY CHECK TABLE Terminal No. Signal Normal conditions 1 - body ground Ground Continuity exists (2 ohms or less) 14 - body ground Ground Continuity exists (2 ohms or less)

SPECIAL TOOLS

SPECIAL TOOLS Tool Tool number and name Supersession Application MB991958 MB991824 MB991827 MB991910 MB991911 MB991914 MB991825 MB991826 M.U.T.-III sub assembly Vehicle communication interface (V.C.I.) M.U.T.-III USB cable M.U.T.-III main harness A (Vehicles with CAN communication system) M.U.T.-III main harness B (Vehicles without CAN communication system) M.U.T.-III main harness C (for Daimler Chrysler models only) M.U.T.-III measurement adapter M.U.T.-III trigger harness MB991824-KIT NOTE: G: MB991826 M.U.T.-III Trigger Harness is not necessary when pushing V.C.I. ENTER key. CAUTION: M.U.T.-III main harness A (MB991910) should be used. M.U.T.-III main harness B and C should not be used for this vehicle. ABS system diagnostics MB991223 MB991219 MB991220 MB991221 MB991222 Harness set Test harness LED harness LED harness adaptor Probe General service tools Continuity check and voltage measurement at harness wire or connector for loose, corroded or damaged terminals, or terminals pushed back in the connector. Connector pin contact pressure inspection Power circuit inspection Power circuit inspection Commercial tester connection MB992006 Extra fine probe - Continuity check and voltage measurement at harness wire or connector for loose, corroded or damaged terminals, or terminals pushed back in the connector. MB991974 ABS check harness - Measure the voltage and resistance at the ABS-ECU MB991709 Wiring harness set - Output current measure at the wheel speed sensor

Scheme 121

Scheme 121: SPECIAL TOOLS

Scheme 122

Scheme 123

Scheme 124

Scheme 125

WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT

Required Special Tools

MB991709: Wiring harness set

The relevant wheel, on which the wheel speed sensor is fitted, should be free to run.

Scheme 126

Remove the wheel speed sensor connector to be checked. CAUTION: For precise measurement, do not connect to the wheel speed sensor-side connector and the wiring harness side connector terminal No. 1.
Use the special tool test harness (MB991709) to connect a multimeter between the wheel speed sensor-side connector and the wiring harness connector terminal No. 2.
Turn the ignition switch to the "ON" position. CAUTION: Do not rotate the wheel too quickly. Output current changes significantly as the wheel speed detection magnetic encoder comes near or goes away from the wheel speed sensor.
Rotate the wheel, on which the wheel speed sensor is fitted, quite slowly to measure the output current with the multimeter. Standard value: 5.9 to 8.4 mA or 11.8 to 16.8 mA
If the measurement is not within the standard value, or the output current does not change in proportion to the wheel rotation, replace the wheel speed sensor (Refer to «WHEEL SPEED SENSOR»(/mitsubishi/lancer-evolution/x-2007-2016/remont/anti-locktraction-control/#anti-lock-braking-system-abs-except-lancer-evolution) ).

HYDRAULIC UNIT CHECK

Required Special Tools

MB991958: M.U.T.-III Sub Assembly MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)

Scheme 127

Raise the vehicle using a jack and support the specified points with a rigid rack. CAUTION: Before connecting or disconnecting scan tool, always turn the ignition switch to the LOCK (OFF) position.
Before setting scan tool, turn the ignition key to the LOCK (OFF) position.
Confirm that the selector lever is in the "N" position, and then start the engine.
When carrying out the actuator tests No. 01 to 04, perform the actuator tests using scan tool while depressing the brake pedal. When carrying out the actuator tests, rotate the wheel by hands to confirm that the braking force changes. NOTE: While performing the actuator test, the ABS warning light flashes at a rate of 2 Hz. When ABS-ECU is disabled due to the fail-safe function, the scan tool actuator test cannot be performed. After the actuator test has been performed, the ABS warning light and brake waning light illuminate until the ignition switch is turned to ON again or the communication between scan tool and ABS-ECU is terminated.
This is indicated as shown in the above figure.
When any malfunction has been found, take necessary action according to the "Judgment Table." JUDGMENT TABLE Display on scan tool Operation Inspection result Judgment Probable cause Remedy 01 FL wheel ABS drive 02 FR wheel ABS drive 03 RL wheel ABS drive 04 RR wheel ABS drive Depress the brake pedal to lock the vehicle. Select the vehicle to be inspected using scan tool, perform the actuator test. Rotate the selected wheel by hands to confirm the braking force. Braking force decreases for 3 seconds from the lock status. Normal - - The wheel does not lock even if the brake pedal is depressed. Error Clogged brake line other than hydraulic unit Check and clean the brake line. Clogged hydraulic circuit in the hydraulic unit Replace the hydraulic unit assembly. Braking force does not decrease. Faulty routing of hydraulic unit brake tube Route the brake tube correctly. Malfunction of hydraulic unit solenoid valve operation Replace the hydraulic unit assembly.
After the inspection, turn the ignition switch to the LOCK (OFF) position, and then disconnect scan tool.

IN THE EVENT OF A DISCHARGED BATTERY

WARNING

If the ABS is not operating, the vehicle will be unstable during braking, Do not drive the vehicle with the ABS-ECU connector disconnected or with the ABS not operating.

If the engine is started using a booster cable when the battery is completely flat, and the vehicle is then driven without waiting for the battery to be recharged, the engine may misfire and it may not be possible to drive the vehicle. This is because the ABS consumes a large amount of current when carrying out its initial checks. If this happens, recharge the battery fully.

REMOVAL AND INSTALLATION

CAUTION

The vehicle speed detection encoder collects any metallic particle easily, because it is magnetized. Make sure that the encoder should not collect any metallic particle. Check that there is not any trouble prior to reassembling it.

Scheme 128

Note. The vehicle speed detection encoder is integrated with the front wheel bearing and the rear wheel hub assembly, which cannot be disassembled.

Scheme 129

Scheme 129: >> A << REAR WHEEL SPEED SENSOR, O-RING, AND BOLT (CONNECTION OF REAR WHEEL SPEED SENSOR WITH REAR W

Align the mounting bolt hole position of rear wheel speed sensor with the mounting bolt hole position of rear wheel hub assembly. CAUTION: Do not insert the rear wheel speed sensor at an angle or by prying the sensor because it may be possible that the O-ring of rear wheel speed sensor cannot be mounted properly. After the insertion, do not perform an alignment of mounting bolt hole positions by rotating the rear wheel speed sensor.
As shown in the figure, mount the rear wheel speed sensor while keeping the sensor perpendicular to the rear wheel hub assembly.

>> B << HARNESS CLIP INSTALLATION

Install the front wheel speed sensor to the harness clip as shown in the figure.

Scheme 130

Scheme 130: >> B << HARNESS CLIP INSTALLATION

>> C << FRONT WHEEL SPEED SENSOR GROMMET/REAR WHEEL SPEED SENSOR GROMMET INSTALLATION

Install the front wheel speed sensor grommet and the rear wheel speed sensor grommet to the body panel snugly as shown in the figure.

Scheme 131

Scheme 131: >> C << FRONT WHEEL SPEED SENSOR GROMMET/REAR WHEEL SPEED SENSOR GROMMET INSTALLATION

WHEEL SPEED SENSOR CURRENT CHECK

CAUTION

Do not connect the battery terminals in reverse as the wheel speed sensor may be damaged.

Scheme 132

Connect the circuit tester to the wheel speed sensor using the special tool extra fine probe (MB992006), and measure the sensor current as a single unit. Standard value: 5.9 to 8.4 mA or 11.8 to 16.8 mA
If the measurement value is not within the standard value range, replace the wheel speed sensor with a new one.

Scheme 133

Scheme 133: WHEEL SPEED SENSOR INSULATION CHECK

Connect the circuit tester to the wheel speed sensor using the special tool extra fine probe (MB992006), and measure the insulation resistance between terminal No. 1/2 and the wheel speed sensor body as a single unit. Standard value: 5 Mohms or more
If the insulation resistance is not within the standard value range, replace the wheel speed sensor with a new one.

Note. ABS-ECU is located in the hydraulic unit.

Scheme 134

Scheme 134: REMOVAL AND INSTALLATION

<< A >> ABS-ECU HARNESS CONNECTOR DISCONNECTION

Operate the lock lever to disconnect the ABS-ECU harness connector as shown in the figure.

Scheme 135

Scheme 135: << A >> ABS-ECU HARNESS CONNECTOR DISCONNECTION

<< B >> HYDRAULIC UNIT (ABS-ECU) REMOVAL

CAUTION

Be careful when removing the hydraulic unit because it is heavy. Never loosen the nuts and the bolts because the hydraulic unit cannot be disassembled. Do not drop or shock the hydraulic unit. Do not turn the hydraulic unit upside down or lay down the unit because the inner air becomes difficult to be bled.

>> A << BRAKE TUBE CONNECTION

Install the brake pipe to the hydraulic unit as shown in the figure. Step numbers correspond to numbers in figure.

Scheme 136

Scheme 136: >> A << BRAKE TUBE CONNECTION

From master cylinder (primary) < Marking color: Blue >
To front brake (RH) < Marking color: Orange and white >
To front brake (LH) < Marking color: Red and white >
From master cylinder (secondary) < Marking color: Yellow >
To rear brake (RH) < Marking color: Pink >
To rear brake (LH) < Marking color: White >

Anti-Lock Braking System (ABS) - Except Lancer Evolution Mitsubishi Lancer Evolution X

SERVICE SPECIFICATIONS

INTRODUCTION

ABS DIAGNOSTIC TROUBLE CODE DETECTION CONDITIONS

ABS DIAGNOSTIC TROUBLESHOOTING STRATEGY

ABS WARNING LIGHT AND BRAKE WARNING LIGHT CHECK

Scheme 71

CHECK OF FREEZE FRAME DATA

FAIL-SAFE FUNCTION

HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)

Scheme 72

HOW TO READ AND ERASE DIAGNOSTIC TROUBLE CODES

HOW TO READ DATA LIST

HOW TO PERFORM ACTUATOR TEST

DIAGNOSTIC TROUBLE CODE CHART

Scheme 73

CIRCUIT OPERATION

DTC SET CONDITIONS

Current trouble

Past trouble

DIAGNOSIS

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DTC C101C: Abnormality in FR wheel speed sensor signal

Scheme 91

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Scheme 93

DTC C1014: Mutual monitoring of FL wheel speed sensor

DTC C101F: Mutual monitoring of FR wheel speed sensor

DTC C102A: Mutual monitoring of RL wheel speed sensor

DTC C1035: Mutual monitoring of RR wheel speed sensor

DTC C1041: Abnormality in periodical signal for FL wheel speed sensor

DTC C1042: Abnormality in periodical signal for FR wheel speed sensor

DTC C1043: Abnormality in periodical signal for RL wheel speed sensor

DTC C1044: Abnormality in periodical signal for RR wheel speed sensor

DTC C1046: FL wheel speed sensor control phase time exceeded

PROBABLE CAUSES

DTC C1047: FR wheel speed sensor control phase time exceeded

Scheme 94

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Scheme 102

DTC C2116: Abnormality in pump motor power supply voltage

Scheme 103

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DTC C2200: Abnormality in ABS-ECU

OPERATION

Scheme 107

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Scheme 110

DTC C2101: Abnormality in battery voltage (high voltage)

DTC C1395: Brake fluid filling not completed

DTC C2203: VIN not recorded

Scheme 111

DTC U0001: Bus-off

DTC U0100: Engine time-out error; DTC U0141: ETACS time-out error

DTC U0100