Local Interconnect Network (LIN) - Except Lancer Evolution Mitsubishi Lancer Evolution X

GENERAL INFORMATION

LIN refers to "Local Interconnect Network," which is a serial multiplex communication protocol* administrated by LIN consortium. A communication circuit employing the LIN protocol connects each ECU, and switch and sensor data can be shared among ECUs, which enables more reduction in wiring.

Note. *: The regulations that have been decided in detail, from software matters such as the necessary transmission rate for communication, the system, data format, and communication timing control method to hardware matters such as the harness type and length and the resistance values.

Scheme 356

Master and slave ECUs are connected to the LIN bus lines. The master ECU is the ETACS *1 -ECU, and the slave ECUs are the column switch (column-ECU), the power window main switch, the sunroof-ECU *2 and the lighting control sensor *3 , the theft-alarm siren (via LIN cutoff control unit *4)*5 and the theft-alarm siren *5 . The master ECU requests these slave ECUs to communicate each other via communication lines.

Note. *1 : ETACS (Electronic Time and Alarm Control System) *2 : Vehicles with sunroof *3 : Vehicles with auto light function *4 : The LIN cutoff control unit is a relay circuit to turn ON/OFF the LIN communication of theft-alarm siren. An ECU is not incorporated in the LIN cutoff control unit. *5 : Vehicles with theft-alarm sensor

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 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. DTC, data list and actuator test check. MB991223 MB991219 MB991220 MB991221 MB991222 Harness set Check harness LED harness LED harness adapter Probe General service tool (jumper) Continuity check and voltage measurement at harness wire or connector For checking connector pin contact pressure For checking power supply circuit For checking power supply circuit For connecting a locally sourced tester MB992006 Extra fine probe - Continuity check and voltage measurement at harness wire or connector

Scheme 357

Scheme 358

Scheme 359

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

Required Special Tools

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

1. MB991824: Vehicle Communication Interface (V.C.I.)
2. MB991827: M.U.T.-III USB Cable
3. MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system) 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 360

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

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

1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "System select" from the start-up screen.
4. Select "From 2006 MY" of "Model Year." When the "Vehicle Information" is displayed, check the contents.
5. Select "ETACS" from "System List", and press the "OK" button. NOTE: When the "Loading Option Setup" list is displayed, check the applicable item.
6. Select "Diagnostic Trouble Code" to read the DTC.
7. If a DTC is set, it is shown.
8. Choose "Erase DTCs" to erase the DTC.

DIAGNOSTIC TROUBLE CODE CHART

DIAGNOSTIC TROUBLE CODE CHART

DTC U0169: Sunroof LIN timeout < Vehicles with sunroof >

Scheme 361

TROUBLE JUDGMENT

The ETACS-ECU receives signal from the sunroof motor assembly (sunroof-ECU). If signal cannot be received at all, DTC U0169 will be set.

Current trouble

1. Connector(s) or wiring harness in the LIN bus lines between the sunroof motor assembly and the ETACS-ECU, the power supply system of the sunroof motor assembly, or the sunroof motor assembly itself may be defective.

Past trouble

1. If DTC U0169 is stored as a past trouble, carry out diagnosis with particular emphasis on wiring and connector(s) in the LIN bus line between the sunroof motor assembly and the ETACS-ECU, and the power supply system of the sunroof motor assembly. 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) .

TROUBLESHOOTING HINTS

1. The sunroof motor assembly may be defective.
2. The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector.

DIAGNOSIS

Required Special Tools

1. MB991958 Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicles 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 362

Scheme 363

1. STEP 1. Check ETACS-ECU connector C-316 and sunroof motor assembly connector D-05 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are ETACS-ECU connector C-316 and sunroof motor assembly connector D-05 in good condition? YES: Go to Step 2. NO: Repair or replace the damaged component(s).
2. STEP 2. Check the ground circuit to the sunroof motor assembly. Measure the resistance at sunroof motor assembly connector D-05. Disconnect sunroof motor assembly connector D-05 and measure the resistance available at the wiring harness side of the connector. Measure the resistance value between sunroof motor assembly connector D-05 terminal 2 and ground. The resistance should be 2 ohms or less. Q: Is the measured resistance 2 ohms or less? YES: Go to Step 4 . NO: Go to Step 3.
3. STEP 3. Check the wiring harness between sunroof motor assembly connector D-05 (terminal 2) and the ground. Check the ground wires for open circuit. Q: Is the wiring harness between sunroof motor assembly connector D-05 (terminal 2) and the ground in good condition? YES: No action is necessary and testing is complete. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
4. STEP 4. Check the battery power supply circuit to the sunroof motor assembly. Measure the voltage at sunroof motor assembly connector D-05. Disconnect sunroof motor assembly connector D-05 measure the voltage available at the wiring harness side of the connector. Measure the voltage between sunroof motor assembly connector D-05 terminal 6 and ground. The voltage should measure approximately 12 volts (battery positive voltage). Q: Is the measured voltage approximately 12 volts (battery positive voltage)? YES: Go to Step 6 . NO: Go to Step 5.
5. STEP 5. Check the wiring harness between ETACS-ECU connector C-316 (terminal 2) and sunroof motor assembly connector D-05 (terminal 6). Check the power supply line (battery supply) for open circuit and short circuit. Q: Is the wiring harness between ETACS-ECU connector C-316 (terminal 2) and sunroof motor assembly connector D-05 (terminal 6) in good condition? YES: No action is necessary and testing is complete. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
6. STEP 6. Check the wiring harness between ETACS-ECU connector C-316 (terminal 1) and sunroof motor assembly connector D-05 (terminal 7). Check the communication lines for open circuit. Q: Is the wiring harness between ETACS-ECU connector C-316 (terminal 1) and sunroof motor assembly connector D-05 (terminal 7) in good condition? YES: Go to Step 7. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
7. STEP 7. Recheck for diagnostic trouble code. Check again if the DTC is set to the ETACS-ECU. 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. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#local-interconnect-network-lin-except-lancer-evolution__how-to-connect-the-scan-tool) ." Erase the DTC. Turn the ignition switch to the "ON" position. Check if the DTC is set. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the sunroof motor assembly. NO: A poor connection, open circuit or other intermittent malfunction is present in the LIN bus lines between the sunroof motor assembly and the ETACS-ECU (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) ).

DTC U0215: P/W SW (DR) LIN timeout

Scheme 364

The ETACS-ECU receives signal from the power window main switch. If signal cannot be received at all, DTC U0215 will be set.

1. Connector(s) or wiring harness in the LIN bus lines between the power window main switch and the ETACS-ECU, the power supply system of the power window main switch, or the power window main switch itself may be defective.

1. If DTC U0215 is stored as a past trouble, carry out diagnosis with particular emphasis on wiring and connector(s) in the LIN bus line between the power window main switch and the ETACS-ECU, and the power supply system of the power window main switch. 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) .

1. The power window main switch may be defective.
2. The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector.

Required Special Tools

1. MB991958 Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicles 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 365

Scheme 366

Scheme 367

1. STEP 1. Check ETACS-ECU connectors C-301, C-315 and power window main switch connector E-28 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are ETACS-ECU connector C-301, C-315 and power window main switch connector E-28 in good condition? YES: Go to Step 2. NO: Repair or replace the damaged component(s).
2. STEP 2. Check the ground circuit to the power window main switch. Measure the resistance at power window main switch connector E-28. Disconnect power window main switch connector E-28 and measure the resistance available at the wiring harness side of the connector. Measure the resistance value between power window main switch connector E-28 terminal 10 and ground. The resistance should be 2 ohms or less. Q: Is the measured resistance 2 ohms or less? YES: Go to Step 4 . NO: Go to Step 3.
3. STEP 3. Check the wiring harness between power window main switch connector E-28 (terminal 10) and the ground. Check the ground wires for open circuit. NOTE: Also check intermediate connector C-125 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-125 is damaged, repair or replace the connector as described in «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#general-electrical-except-lancer-evolution) . Q: Is the wiring harness between power window main switch connector E-28 (terminal 10) and the ground in good condition? YES: No action is necessary and testing is complete. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
4. STEP 4. Check the battery power supply circuit to the power window main switch. Measure the voltage at power window main switch connector E-28. Disconnect power window main switch connector E-28 measure the voltage available at the wiring harness side of the connector. Measure the voltage between power window main switch connector E-28 terminal 5 and ground. The voltage should measure approximately 12 volts (battery positive voltage). Q: Is the measured voltage approximately 12 volts (battery positive voltage)? YES: Go to Step 6 . NO: Go to Step 5.
5. STEP 5. Check the wiring harness between ETACS-ECU connector C-315 (terminal 10) and power window main switch connector E-28 (terminal 5). Check the power supply line (battery supply) for open circuit and short circuit. NOTE: Also check intermediate connector C-125 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-125 is damaged, repair or replace the connector as described in «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#general-electrical-except-lancer-evolution) . Q: Is the wiring harness between ETACS-ECU connector C-315 (terminal 10) and power window main switch connector E-28 (terminal 5) in good condition? YES: No action is necessary and testing is complete. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
6. STEP 6. Check the wiring harness between ETACS-ECU connector C-301 (terminal 1) and power window main switch connector E-28 (terminal 7). Check the communication lines for open circuit. NOTE: Also check intermediate connector C-126 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-126 is damaged, repair or replace the connector as described in «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#general-electrical-except-lancer-evolution) . Q: Is the wiring harness between ETACS-ECU connector C-301 (terminal 1) and power window main switch connector E-28 (terminal 7) in good condition? YES: Go to Step 7. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
7. STEP 7. Recheck for diagnostic trouble code. Check again if the DTC is set to the ETACS-ECU. 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. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#local-interconnect-network-lin-except-lancer-evolution__how-to-connect-the-scan-tool) ." Erase the DTC. Turn the ignition switch to the "ON" position. Check if the DTC is set. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the power window main switch. NO: A poor connection, open circuit or other intermittent malfunction is present in the LIN bus lines between the power window main switch and the ETACS-ECU (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) ).

DTC U0231: Lighting control sensor LIN timeout < Vehicles with auto light function >

Scheme 368

The ETACS-ECU receives signal from the lighting control sensor. If signal cannot be received at all, DTC U0231 will be set.

1. Connector(s) or wiring harness in the LIN bus lines between the lighting control sensor and the ETACS-ECU, the power supply system of the lighting control sensor, or the lighting control sensor itself may be defective.

1. If DTC U0169 is stored as a past trouble, carry out diagnosis with particular emphasis on wiring and connector(s) in the LIN bus line between the lighting control sensor and the ETACS-ECU, and the power supply system of the lighting control sensor. 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) .

1. The lighting control sensor may be defective.
2. The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector.

Required Special Tools

1. MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicles 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 369

Scheme 370

1. STEP 1. Check ETACS-ECU connectors C-316, C-317 and lighting control sensor connector D-42 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are ETACS-ECU connectors C-316, C-317 and lighting control sensor connector D-42 in good condition? YES: Go to Step 2. NO: Repair or replace the damaged component(s).
2. STEP 2. Check the ground circuit to the lighting control sensor. Measure the resistance at lighting control sensor connector D-42. Disconnect power window main switch connector D-42 and measure the resistance available at the wiring harness side of the connector. Measure the resistance value between power window main switch connector D-42 terminal 2 and ground. The resistance should be 2 ohms or less. Q: Is the measured resistance 2 ohms or less? YES: Go to Step 4 . NO: Go to Step 3.
3. STEP 3. Check the wiring harness between lighting control sensor connector D-42 (terminal 2) and the ground. Check the ground wires for open circuit. Q: Is the wiring harness between lighting control sensor connector D-42 (terminal 2) and the ground in good condition? YES: No action is necessary and testing is complete. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
4. STEP 4. Check the battery power supply circuit to the lighting control sensor. Measure the voltage at lighting control sensor connector D-42. Disconnect lighting control sensor connector D-42 measure the voltage available at the wiring harness side of the connector. Measure the voltage between lighting control sensor connector D-42 terminal 1 and ground. The voltage should measure approximately 12 volts (battery positive voltage). Q: Is the measured voltage approximately 12 volts (battery positive voltage)? YES: Go to Step 6 . NO: Go to Step 5.
5. STEP 5. Check the wiring harness between ETACS-ECU connector C-317 (terminal 10) and lighting control sensor connector D-42 (terminal 1). Check the power supply line (battery supply) for open circuit and short circuit. NOTE: Also check intermediate connector C-130 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-130 is damaged, repair or replace the connector as described in «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#general-electrical-except-lancer-evolution) . Q: Is the wiring harness between ETACS-ECU connector C-317 (terminal 10) and lighting control sensor connector D-42 (terminal 1) in good condition? YES: No action is necessary and testing is complete. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
6. STEP 6. Check the wiring harness between ETACS-ECU connector C-316 (terminal 1) and lighting control sensor connector D-42 (terminal 3). Check the communication line for open circuit. Q: Is the wiring harness between ETACS-ECU connector C-316 (terminal 1) and lighting control sensor connector D-42 (terminal 3) in good condition? YES: Go to Step 7. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
7. STEP 7. Recheck for diagnostic trouble code. Check again if the DTC is set to the ETACS-ECU. 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. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#local-interconnect-network-lin-except-lancer-evolution__how-to-connect-the-scan-tool) ." Erase the DTC. Turn the ignition switch to the "ON" position. Check if the DTC is set. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the lighting control sensor. NO: A poor connection, open circuit or other intermittent malfunction is present in the LIN bus lines between the lighting control sensor and the ETACS-ECU (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) ).

DTC U1006: Theft-alarm siren LIN timeout < Vehicles with theft-alarm sensor >

Scheme 371

The ETACS-ECU receives signal from the theft-alarm siren. If signal cannot be received at all, DTC U1006 will be set.

1. Connector(s) or wiring harness in the LIN bus lines between the theft-alarm siren and the ETACS-ECU, the power supply system of the power window main switch, or the theft-alarm siren itself may be defective.

1. If DTC U1006 is stored as a past trouble, carry out diagnosis with particular emphasis on wiring and connector(s) in the LIN bus line between the theft-alarm siren and the ETACS-ECU, and the power supply system of the theft-alarm siren. 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) .

1. The theft-alarm siren may be defective.
2. The LIN cutoff control unit may be defective.
3. The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector.

Required Special Tools

1. MB991958 Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicles 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 372

Scheme 373

Scheme 374

Scheme 375

1. STEP 1. Check ETACS-ECU connectors C-301, C-304, C-312 and C-317, LIN cutoff control unit connector C-142, theft-alarm siren connector A-62 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are ETACS-ECU connectors C-301, C-304, C-312 and C-317, LIN cutoff control unit connector C-142, theft-alarm siren connector A-62 in good condition? YES: Go to Step 2. NO: Repair or replace the damaged component(s). Go to Step 12 .
2. STEP 2. Check the ground circuit to the theft-alarm siren. Measure the resistance at theft-alarm siren connector A-62. Disconnect theft-alarm siren connector A-62 and measure the resistance available at the wiring harness side of the connector. Measure the resistance value between theft-alarm siren connector A-62 terminal 1 and ground. The resistance should be 2 or less. Q: Is the measured resistance 2 ohms or less? YES: Go to Step 4 . NO: Go to Step 3.
3. STEP 3. Check the wiring harness between theft-alarm siren connector A-62 (terminal 1) and the ground. Check the ground wires for open circuit. NOTE: Also check intermediate connector A-63 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector A-63 is damaged, repair or replace the connector as described in «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#general-electrical-except-lancer-evolution) . Q: Is the wiring harness between theft-alarm siren connector A-62 (terminal 1) and the ground in good condition? YES: No action is necessary and testing is complete. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
4. STEP 4. Check the battery power supply circuit to the theft-alarm siren. Measure the voltage at theft-alarm siren connector A-62. Disconnect theft-alarm siren connector A-62 measure the voltage available at the wiring harness side of the connector. Measure the voltage between theft-alarm siren connector A-62 terminal 2 and ground. The voltage should measure approximately 12 volts (battery positive voltage). Q: Is the measured voltage approximately 12 volts (battery positive voltage)? YES: Go to Step 6 . NO: Go to Step 5.
5. STEP 5. Check the wiring harness between ETACS-ECU connector C-304 (terminal 4) and theft-alarm siren connector A-62 (terminal 2). Check the power supply line (battery supply) for open circuit and short circuit. NOTE: Also check intermediate connector A-63 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector A-63 is damaged, repair or replace the connector as described in «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#general-electrical-except-lancer-evolution) . Q: Is the wiring harness between ETACS-ECU connector C-304 (terminal 4) and theft-alarm siren connector A-62 (terminal 2) in good condition? YES: No action is necessary and testing is complete. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
6. STEP 6. Check the LIN cutoff control unit. Remove the LIN cutoff control unit. Check for continuity between the following terminals and inspect the relay. Continuity check CONTROL UNIT CONTINUITY CHECK Terminal number Measurement value 5 to 3 Continuity exists (2 ohms or less) Relay check RELAY CONTINUITY CHECK Battery voltage Terminal number Normal condition At no energization 5 to 7 No continuity With current supply [terminal 1 (+), terminal 8 (-)] Continuity exists (2 ohms or less) Q: Is the LIN cutoff control unit in good condition? YES: Go to Step 7. NO: Replace the LIN cutoff control unit.
7. STEP 7. Check the battery power supply circuit to the ETACS-ECU. Measure the voltage at ETACS-ECU connector C-312. Disconnect ETACS-ECU connector C-312 measure the voltage available at the wiring harness side of the connector. Measure the voltage between ETACS-ECU connector C-312 terminal 9 and ground. The voltage should measure approximately 12 volts (battery positive voltage). Q: Is the check result normal? YES: Go to Step 10 . NO: Go to Step 8.
8. STEP 8. Check the wiring harness between ETACS-ECU connector C-317 (terminal 10) and LIN cutoff control unit connector C-142 (terminal 1). Check the power supply line (battery supply) for open circuit and short circuit. Q: Is the wiring harness between ETACS-ECU connector C-317 (terminal 10) and LIN cutoff control unit connector C-142 (terminal 1) in good condition? YES: Go to Step 9. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
9. STEP 9. Check the wiring harness between ETACS-ECU connector C-312 (terminal 9) and LIN cutoff control unit connector C-142 (terminal 8). Check the power supply line (battery supply) for open circuit and short circuit. NOTE: Also check intermediate connector C-127 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-127 is damaged, repair or replace the connector as described in «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#general-electrical-except-lancer-evolution) . Q: Is the wiring harness between ETACS-ECU connector C-312 (terminal 9) and LIN cutoff control unit connector C-142 (terminal 8) in good condition? YES: Go to Step 12 . NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
10. STEP 10. Check the wiring harness between ETACS-ECU connector C-301 (terminal 1) and LIN cutoff control unit connector C-142 (terminal 7). Check the communication line for open circuit. Q: Is the wiring harness between ETACS-ECU connector C-301 (terminal 1) and LIN cutoff control unit connector C-142 (terminal 7) in good condition? YES: Go to Step 11. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
11. STEP 11. Check the wiring harness between LIN cutoff control unit connector C-142 (terminal 5) and theft-alarm siren connector A-62 (terminal 3). Check the communication line for open circuit. NOTE: Also check intermediate connectors A-63 and C-127 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connectors A-63 and C-127 is damaged, repair or replace the connector as described in «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#general-electrical-except-lancer-evolution) . Q: Is the wiring harness between LIN cutoff control unit connector C-142 (terminal 5) and theft-alarm siren connector A-62 (terminal 3) in good condition? YES: Go to Step 12. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
12. STEP 12. Recheck for diagnostic trouble code. Check again if the DTC is set to the ETACS-ECU. 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. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#local-interconnect-network-lin-except-lancer-evolution__how-to-connect-the-scan-tool) ." Erase the DTC. Turn the ignition switch to the "ON" position. Check if the DTC is set. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the security alarm siren. NO: A poor connection, open circuit or other intermittent malfunction is present in the LIN bus lines between the power window main switch and the ETACS-ECU (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) ).

DTC U1007: Theft-alarm sensor LIN timeout < Vehicles with theft-alarm sensor >

Scheme 376

The ETACS-ECU receives signal from the theft-alarm sensor. If signal cannot be received at all, DTC U1007 will be set.

1. Connector(s) or wiring harness in the LIN bus lines between the theft-alarm sensor and the ETACS-ECU, the power supply system of the power window main switch, or the theft-alarm sensor itself may be defective.

1. If DTC U1007 is stored as a past trouble, carry out diagnosis with particular emphasis on wiring and connector(s) in the LIN bus line between the theft-alarm sensor and the ETACS-ECU, and the power supply system of the theft-alarm sensor. 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) .

1. The theft-alarm sensor may be defective.
2. The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector.

Required Special Tools

1. MB991958 Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicles 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 377

Scheme 378

1. STEP 1. Check ETACS-ECU connectors C-316 and C-317 and theft-alarm sensor connector D-48 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are ETACS-ECU connectors C-316 and C-317 and theft-alarm sensor connector D-48 in good condition? YES: Go to Step 2. NO: Repair or replace the damaged component(s). Go to Step 7 .
2. STEP 2. Check the ground circuit to the theft-alarm sensor. Measure the resistance at theft-alarm sensor connector D-48. Disconnect theft-alarm sensor connector D-48 and measure the resistance available at the wiring harness side of the connector. Measure the resistance value between theft-alarm sensor connector D-48 terminal 3 and ground. The resistance should be 2 ohms or less. Q: Is the measured resistance 2 ohms or less? YES: Go to Step 4 . NO: Go to Step 3.
3. STEP 3. Check the wiring harness between theft-alarm sensor connector D-48 (terminal 3) and the ground. Check the ground wires for open circuit. NOTE: Also check intermediate connector D-47 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector D-47 is damaged, repair or replace the connector as described in «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#general-electrical-except-lancer-evolution) . Q: Is the wiring harness between theft-alarm sensor connector D-48 (terminal 3) and the ground in good condition? YES: No action is necessary and testing is complete. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
4. STEP 4. Check the battery theft-alarm sensor. Measure the voltage at theft-alarm sensor connector D-48. Disconnect theft-alarm sensor connector D-48 measure the voltage available at the wiring harness side of the connector. Measure the voltage between theft-alarm sensor connector D-48 terminal 1 and ground. The voltage should measure approximately 12 volts (battery positive voltage). Q: Is the measured voltage approximately 12 volts (battery positive voltage)? YES: Go to Step 6 . NO: Go to Step 5.
5. STEP 5. Check the wiring harness between ETACS-ECU connector C-317 (terminal 10) and theft-alarm sensor connector D-48 (terminal 1). Check the power supply line (battery supply) for open circuit and short circuit. NOTE: Also check intermediate connector C-130 and D-47 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-130 and D-47 is damaged, repair or replace the connector as described in «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#general-electrical-except-lancer-evolution) . Q: Is the wiring harness between ETACS-ECU connector C-317 (terminal 10) and theft-alarm sensor connector D-48 (terminal 1) in good condition? YES: No action is necessary and testing is complete. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
6. STEP 6. Check the wiring harness between ETACS-ECU connector C-316 (terminal 1) and theft-alarm sensor connector D-48 (terminal 2). Check the communication line for open circuit. NOTE: Also check intermediate connector D-47 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector D-47 is damaged, repair or replace the connector as described in «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#general-electrical-except-lancer-evolution) . Q: Is the wiring harness between ETACS-ECU connector C-316 (terminal 1) and theft-alarm sensor connector D-47 (terminal 2) in good condition? YES: Go to Step 7. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
7. STEP 7. Recheck for diagnostic trouble code. Check again if the DTC is set to the ETACS-ECU. 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. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#local-interconnect-network-lin-except-lancer-evolution__how-to-connect-the-scan-tool) ." Erase the DTC. Turn the ignition switch to the "ON" position. Check if the DTC is set. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the power window main switch. NO: A poor connection, open circuit or other intermittent malfunction is present in the LIN bus lines between the power window main switch and the ETACS-ECU (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) ).

DTC U1109: Column SW LIN timeout

Scheme 379

The ETACS-ECU receives signal from the column switch. If signal cannot be received at all, DTC U1109 will be set.

1. Connector(s) or wiring harness in the LIN bus lines between the column switch and the ETACS-ECU, the power supply system of the column switch, or the column switch itself may be defective.

1. If DTC U1109 is stored as a past trouble, carry out diagnosis with particular emphasis on wiring and connector(s) in the LIN bus line between the column switch and the ETACS-ECU, and the power supply system of the column switch. 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) .

1. The lighting switch may be defective.
2. The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector.

Required Special Tools

1. MB991958 Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicles 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 380

Scheme 381

1. STEP 1. Check ETACS-ECU connectors C-301, C-317 and column switch connector C-201 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are ETACS-ECU connectors C-301, C-317 and column switch connector C-201 in good condition? YES: Go to Step 2. NO: Repair or replace the damaged component(s).
2. STEP 2. Check the ground circuit to the column switch. Measure the resistance at column switch connector C-201. Disconnect column switch connector C-201 and measure the resistance available at the wiring harness side of the connector. Measure the resistance value between column switch connector C-201 terminal 4 and ground. The resistance should be 2 ohms or less. Q: Is the measured resistance 2 ohms or less? YES: Go to Step 4 . NO: Go to Step 3.
3. STEP 3. Check the wiring harness between column switch connector C-201 (terminal 4) and the ground. Check the ground wires for open circuit. Q: Is the wiring harness between column switch connector C-201 (terminal 4) and the ground in good condition? YES: No action is necessary and testing is complete. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
4. STEP 4. Check the battery power supply circuit to the column switch. Measure the voltage at column switch connector C-201. Disconnect column switch connector C-201 measure the voltage available at the wiring harness side of the connector. Measure the voltage between column switch connector C-201 terminal 1 and ground. The voltage should measure approximately 12 volts (battery positive voltage). Q: Is the measured voltage approximately 12 volts (battery positive voltage)? YES: Go to Step 6 . NO: Go to Step 5.
5. STEP 5. Check the wiring harness between ETACS-ECU connector C-317 (terminal 10) and column switch connector C-201 (terminal 1). Check the power supply line (battery supply) for open circuit and short circuit. Q: Is the wiring harness between ETACS-ECU connector C-317 (terminal 10) and column switch connector C-201 (terminal 1) in good condition? YES: No action is necessary and testing is complete. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
6. STEP 6. Check the wiring harness between ETACS-ECU connector C-301 (terminal 1) and column switch connector C-201 (terminal 3). Check the communication lines for open circuit. Q: Is the wiring harness between ETACS-ECU connector C-301 (terminal 1) and column switch connector C-201 (terminal 3) in good condition? YES: Go to Step 7. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
7. STEP 7. Recheck for diagnostic trouble code. Check again if the DTC is set to the ETACS-ECU. 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. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#local-interconnect-network-lin-except-lancer-evolution__how-to-connect-the-scan-tool) ." Erase the DTC. Turn the ignition switch to the "ON" position. Check if the DTC is set. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the lighting switch. NO: A poor connection, open circuit or other intermittent malfunction is present in the LIN bus lines between the column switch and the ETACS-ECU (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) ).

The ETACS-ECU will set DTC U150B when abnormal signals are received from the column switch (column-ECU).

1. The lighting switch may be defective.

Required Special Tools

1. MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicles 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)

Recheck for diagnostic trouble code.

Check again if the DTC is set to the ETACS-ECU.

1. Connect scan tool MB991958. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#local-interconnect-network-lin-except-lancer-evolution__how-to-connect-the-scan-tool) ."
2. Erase the DTC.
3. Turn the ignition switch to the "ON" position.
4. Check if the DTC is set.
5. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the lighting switch. NO: A poor connection, open circuit, or other intermittent malfunctions in the LIN bus lines between the column switch and the ETACS-ECU (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) ).

The ETACS-ECU will set DTC U150C when abnormal signals are received from the power window main switch.

1. The power window main switch may be defective.

Required Special Tools

1. MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicles 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)

Recheck for diagnostic trouble code.

Check again if the DTC is set to the ETACS-ECU.

1. Connect scan tool MB991958. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#local-interconnect-network-lin-except-lancer-evolution__how-to-connect-the-scan-tool) ."
2. Erase the DTC.
3. Turn the ignition switch to the "ON" position.
4. Check if the DTC is set.
5. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the power window main switch. NO: A poor connection, open circuit, or other intermittent malfunctions in the LIN bus lines between the power window main switch and the ETACS-ECU (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) ).

The ETACS-ECU will set DTC U1511 when abnormal signals are received from the sunroof motor assembly (sunroof-ECU).

1. The sunroof motor assembly may be defective.

Required Special Tools

1. MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicles 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)

Recheck for diagnostic trouble code.

Check again if the DTC is set to the ETACS-ECU.

1. Connect scan tool MB991958. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#local-interconnect-network-lin-except-lancer-evolution__how-to-connect-the-scan-tool) ."
2. Erase the DTC.
3. Turn the ignition switch to the "ON" position.
4. Check if the DTC is set.
5. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the sunroof motor assembly. NO: A poor connection, open circuit, or other intermittent malfunctions in the LIN bus lines between the sunroof motor assembly and the ETACS-ECU (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) ).

The ETACS-ECU will set DTC U1512 when abnormal signals are received from the lighting control sensor.

1. The lighting control sensor may be defective.

Required Special Tools

1. MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicles 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)

Recheck for diagnostic trouble code.

Check again if the DTC is set to the ETACS-ECU.

1. Connect scan tool MB991958. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#local-interconnect-network-lin-except-lancer-evolution__how-to-connect-the-scan-tool) ."
2. Erase the DTC.
3. Turn the ignition switch to the "ON" position.
4. Check if the DTC is set.
5. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the lighting control sensor. NO: A poor connection, open circuit, or other intermittent malfunctions in the LIN bus lines between the lighting control sensor and the ETACS-ECU (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) ).

The ETACS-ECU receives and sends data simultaneously. If the data contains a fault, the ETACS-ECU will set DTC U1514.

1. The slave ECU may be defective.
2. The ETACS-ECU may be defective.
3. Electrical noise generated in the LIN bus lines

Required Special Tools

1. MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicles 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)

Recheck for diagnostic trouble code.

Check again if the DTC is set to the ETACS-ECU.

1. Connect scan tool MB991958. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#local-interconnect-network-lin-except-lancer-evolution__how-to-connect-the-scan-tool) ."
2. Erase the DTC.
3. Turn the ignition switch to the "ON" position.
4. Check if the DTC is set.
5. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES < A DTC other than U1514 is set. >: Replace the appropriate ECU. YES < The DTC U1514 is set. >: Replace the ETACS-ECU. NO < The DTC is not set. >: The trouble can be an 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) ).

Scheme 382

The ETACS-ECU will set DTC U1515 when no communication has been carried out for more than a certain period after the slave task received last valid data.

1. The ETACS-ECU may be defective.
2. The slave ECU may be defective.
3. LIN bus lines shorted to power supply
4. LIN bus lines shorted to ground

Required Special Tools

1. MB991223: Harness Set
2. MB992006: Extra Fine Probe
3. MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicles 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 383

Scheme 384

Scheme 385

Scheme 386

Scheme 387

Scheme 388

Scheme 389

Scheme 390

Scheme 391

Scheme 392

Scheme 393

Scheme 394

1. STEP 1. Check the following connectors. Check the following connectors: Column switch connector C-201 ETACS-ECU connectors C-301 and C-316 Sunroof motor assembly connector D-05 < Vehicles with sunroof > Lighting control sensor connector D-42 < Vehicles with auto light function > Power window main switch connector E-28 < Vehicles with central door locking system > Theft-alarm sensor connector D-48 < vehicles with theft-alarm sensor > Theft-alarm siren connector A-62 < vehicles with theft-alarm sensor > LIN cutoff control unit connector C-142 < vehicles with theft-alarm sensor > Q: Are all the connectors in good condition? YES: Go to Step 2. NO: Repair or replace the damaged component(s). Refer to «HARNESS CONNECTOR INSPECTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/body-electrical/#general-electrical-except-lancer-evolution) .
2. STEP 2. Check the LIN cutoff control unit. Remove the LIN cutoff control unit. Check for continuity between the following terminals and inspect the relay. Continuity check CONTROL UNIT CONTINUITY CHECK Terminal number Measurement value 5 to 3 Continuity exists (2 ohms or less) Relay check RELAY CONTINUITY CHECK Battery voltage Terminal number Normal condition At no energization 5 to 7 No continuity With current supply [terminal 1 (+), terminal 8 (-)] Continuity exists (2 ohms or less) Q: Is the LIN cutoff control unit in good condition? YES: Go to Step 3. NO: Replace the LIN cutoff control unit
3. STEP 3. Measure the voltage at the LIN bus lines. Check the LIN bus lines for short to power supply. Disconnect all the ECU connectors which are connected to the LIN bus lines. Turn the ignition switch from "LOCK" (OFF) to "ON" position. Measure the voltage between column switch connector C-201 (terminal 3) and ground. The voltmeter needle does not swing. NOTE: If the LIN bus lines are short to power supply, the voltmeter indicates a constant value. Measure the voltage between power window main switch connector E-28 (terminal 7) and ground. The voltmeter needle does not swing. NOTE: If the LIN bus lines are short to power supply, the voltmeter indicates a constant value. Measure the voltage between sunroof motor assembly connector D-05 (terminal 7) and ground. < Vehicles with sunroof > The voltmeter needle does not swing. NOTE: If the LIN bus lines are short to power supply, the voltmeter indicates a constant value. Measure the voltage between lighting control sensor connector D-42 (terminal 3) and ground. < Vehicles with auto light function > The voltmeter needle does not swing. NOTE: If the LIN bus lines are short to power supply, the voltmeter indicates a constant value. Measure the voltage between theft alarm sensor connector D-48 (terminal 2) and ground. < Vehicles with theft alarm > The voltmeter needle does not swing. NOTE: If the LIN bus lines are short to power supply, the voltmeter indicates a constant value. Measure the voltage between theft alarm siren connector A-62 (terminal 3) and ground. < Vehicles with theft alarm > The voltmeter needle does not swing. NOTE: If the LIN bus lines are short to power supply, the voltmeter indicates a constant value. Q: Is the check result normal? YES: Go to Step 4. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
4. STEP 4. Measure the resistance at the LIN bus lines. Check the LIN bus lines for short to ground. Disconnect all the ECU connectors which are connected to the LIN bus lines. Measure the resistance value between column switch connector C-201 (terminal 3) and ground. No continuity (1 kohms or more) Measure the voltage between power window main switch connector E-28 (terminal 7) and ground. The voltmeter needle does not swing. Measure the resistance value between sunroof motor assembly connector D-05 (terminal 7) and ground. < Vehicles with sunroof > No continuity (1 kohms or more) Measure the resistance value between lighting control sensor connector D-42 (terminal 3) and ground. < Vehicles with auto light function > No continuity (1 kohms or more) Measure the voltage between theft alarm sensor connector D-48 (terminal 2) and ground. < Vehicles with theft alarm > The voltmeter needle does not swing. Measure the voltage between theft alarm siren connector A-62 (terminal 3) and ground. < Vehicles with theft alarm > The voltmeter needle does not swing. Q: Is the check result normal? YES: Go to Step 5. NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
5. STEP 5. Check the column switch. Disconnect column switch connector C-201, and recheck whether DTC U1515 is set. 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. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#local-interconnect-network-lin-except-lancer-evolution__how-to-connect-the-scan-tool) ." Connect all the relevant ECUs, and disconnect column switch connector C-201 only. Erase the DTC. Turn the ignition switch from "LOCK" (OFF) to "ON" position. Check whether DTC U1515 is set. NOTE: If DTC U1515 is not set, DTC U1109 is set because the column switch is disconnected. This is normal. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is DTC U1515 set? YES: Reconnect the column switch connector, and go to Step 6. NO: Replace the column switch.
6. STEP 6. Check the power window main switch. Disconnect power window main switch connector E-28, and recheck whether DTC U1515 is set. Connect all the relevant ECUs, and disconnect power window main switch connector E-28 only. Erase the DTC. Turn the ignition switch from "LOCK" (OFF) to "ON" position. Check whether DTC U1515 is set. NOTE: If DTC U1515 is not set, DTC U0215 is set because the power window main switch is disconnected. This is normal. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is DTC U1515 set? YES: Reconnect the power window main switch connector, and go to Step 7. NO: Replace the power window main switch.
7. STEP 7. Check the sunroof motor assembly. Disconnect sunroof motor assembly connector D-05, and recheck whether DTC U1515 is set. Connect all the relevant ECUs, and disconnect sunroof motor assembly connector D-05 only. Erase the DTC. Turn the ignition switch from "LOCK" (OFF) to "ON" position. Check whether DTC U1515 is set. NOTE: If DTC U1515 is not set, DTC U0169 is set because the sunroof motor assembly is disconnected. This is normal. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is DTC U1515 set? YES: Reconnect the sunroof motor assembly connector, and go to Step 8. NO: Replace the sunroof motor assembly.
8. STEP 8. Check the lighting control sensor. Disconnect lighting control sensor connector D-42, and recheck whether DTC U1515 is set. Connect all the relevant ECUs, and disconnect lighting control sensor connector D-42 only. Erase the DTC. Turn the ignition switch from "LOCK" (OFF) to "ON" position. Check whether DTC U1515 is set. NOTE: If DTC U1515 is not set, DTC U0231 is set because the power lighting control sensor is disconnected. This is normal. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is DTC U1515 set? YES: Reconnect the lighting control sensor connector, and go to Step 9. NO: Replace the lighting control sensor.
9. STEP 9. Check the theft-alarm sensor. Disconnect theft-alarm sensor connector D-48, and recheck whether DTC U1515 is set. Connect all the relevant ECUs, and disconnect theft-alarm sensor connector D-48 only. Erase the DTC. Turn the ignition switch from "LOCK" (OFF) to "ON" position. Check whether DTC U1515 is set. NOTE: If DTC U1515 is not set, DTC U1007 is set because the theft-alarm sensor is disconnected. This is normal. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is DTC U1515 set? YES: Reconnect the theft-alarm sensor connector, and go to Step 10. NO: Replace the theft-alarm sensor.
10. STEP 10. Check the theft-alarm siren. Disconnect theft-alarm siren connector A-62, and recheck whether DTC U1515 is set. Connect all the relevant ECUs, and disconnect theft-alarm siren connector A-62 only. Erase the DTC. Turn the ignition switch from "LOCK" (OFF) to "ON" position. Check whether DTC U1515 is set. NOTE: If DTC U1515 is not set, DTC U1006 is set because the theft-alarm siren is disconnected. This is normal. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is DTC U1515 set? YES: Reconnect the theft-alarm siren connector, and go to Step 11. NO: Replace the theft-alarm siren.
11. STEP 11. Recheck for diagnostic trouble code. Check again if the DTC is set to the ETACS-ECU. Erase the DTC. Turn the ignition switch from "LOCK" (OFF) to "ON" position. Check whether DTC U1515 is set. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the ETACS-ECU. NO: The trouble can be an 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) ).

DTC U1539: Theft-alarm siren LIN checksum < Vehicles with theft-alarm sensor >

ETACS-ECU will set diagnostic trouble code No. U1539 when abnormal signals are received from the theft-alarm siren.

Faulty theft-alarm siren

Required Special Tools

1. 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 (Vehicles with CAN communication system)

Using scan tool MB991958, read the ETACS-ECU diagnostic trouble code.

Check again if the DTC is set to the ETACS-ECU.

Scheme 395

1. Connect scan tool MB991958. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#local-interconnect-network-lin-except-lancer-evolution__how-to-connect-the-scan-tool) ."
2. Erase the DTC.
3. Turn the ignition switch to the "ON" position.
4. Check if the DTC is set.
5. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the theft-alarm siren. NO: A poor connection, open circuit, or other intermittent malfunctions in the LIN bus lines between the theft alarm siren and the ETACS-ECU (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) ).

DTC U1540: Theft-alarm SNSR. LIN checksum < Vehicles with theft-alarm sensor >

The ETACS-ECU will set diagnostic trouble code No. U1540 when abnormal signals are received from the theft-alarm sensor.

Faulty theft-alarm sensor

Required Special Tools

1. 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 (Vehicles with CAN communication system)

Using scan tool MB991958, read the ETACS-ECU diagnostic trouble code.

Check again if the diagnostic trouble code is set to the ETACS-ECU.

1. Connect scan tool MB991958. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#local-interconnect-network-lin-except-lancer-evolution__how-to-connect-the-scan-tool) ."
2. Erase the DTC.
3. Turn the ignition switch to the "ON" position.
4. Check if the DTC is set.
5. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the theft-alarm sensor. NO: A poor connection, open circuit, or other intermittent malfunctions in the LIN bus lines between the theft alarm sensor and the ETACS-ECU (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) ).

See also:
• HOW TO TREAT PAST TROUBLE
• HOW TO COPE WITH INTERMITTENT MALFUNCTIONS
• HARNESS CONNECTOR INSPECTION
• U0169
• U0215
• U0231
• U1006
• U1007
• U1109
• U150B
• U1539
• U1540
• HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)