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Lan System: Diagnosis Nissan Maxima A35

Communication Devices 3 illustrations ~22411 words

Precautions for Trouble Diagnosis

CAUTIONNever apply 7.0 V or more to the measurement terminal. Use a tester with open terminal voltage of 7.0 V or less. Turn the ignition switch OFF and disconnect the battery cable from the negative terminal when checking the harness.

Scheme 7

Scheme 7: Precautions for Harness Repair
Scheme 7: Precautions for Harness Repair

Scheme 8

Scheme 8
Scheme 8
  1. Solder the repaired area and wrap tape around the soldered area. NOTE: A fray of twisted lines must be within 110 mm (4.33 in).
  2. Bypass connection is never allowed at the repaired area. NOTE: Bypass connection may cause CAN communication error. The spliced wire becomes separated and the characteristics of twisted line are lost.
  3. Replace the applicable harness as an assembly if error is detected on the shield lines of CAN communication line.

WHEN DTC OF CAN COMMUNICATION IS INDICATED EVEN THOUGH CAN COMMUNICATION SYSTEM IS NORMAL

  1. Removal/installation of parts: Error may be detected when removing and installing CAN communication unit and related parts while turning the ignition switch ON. (A DTC except for CAN communication may be detected.)
  2. Fuse blown out (removed): CAN communication of the unit may cease.
  3. Voltage drop: Error may be detected if voltage drops due to discharged battery when turning the ignition switch ON (Depending on the control unit which carries out CAN communication).
  4. Error may be detected if the power supply circuit of the control unit, which carries out CAN communication, malfunctions (Depending on the control unit which carries out CAN communication).
  5. Error may be detected if reprogramming is not completed normally.
CAUTIONCAN communication system is normal if DTC of CAN communication is indicated on SELF-DIAG RESULTS of CONSULT-III under the above conditions. Erase the memory of the self-diagnosis of each unit.

Symptom When Error Occurs in CAN Communication System

In CAN communication system, multiple units mutually transmit and receive signals. Each unit cannot transmit and receive signals if any error occurs on CAN communication line. Under this condition, multiple control units related to the root cause malfunction or go into fail-safe mode.

CAN Diagnosis with CONSULT-III

CAN diagnosis on CONSULT-III extracts the root cause by receiving the following information.

  1. Response to the system call
  2. Control unit diagnosis information
  3. Self-diagnosis
  4. CAN diagnostic support monitor

Self-Diagnosis

If communication signals cannot be transmitted or received among units communicating via CAN communication line, CAN communication-related DTC is displayed on the CONSULT-III "Self Diagnostic Result" screen.

Note. The following table shows examples of CAN communication-related DTC. For other DTC, refer to the applicable information.

DTCSelf-diagnosis item (CONSULT-III indication)DTC detection conditionInspection/Action
U1000CAN COMM CIRCUITECMWhen ECM is not transmitting or receiving CAN communication signal of OBD (emission-related diagnosis) for 2 seconds or more.Start the inspection. Refer to the applicable information of the indicated control unit.
Except for ECMWhen a control unit (except for ECM) is not transmitting or receiving CAN communication signal for 2 seconds or more.
U1001CAN COMM CIRCUITWhen ECM is not transmitting or receiving CAN communication signal other than OBD (emission-related diagnosis) for 2 seconds or more.
U1002SYSTEM COMMWhen a control unit is not transmitting or receiving CAN communication signal for 2 seconds or less.
U1010CONTROL UNIT(CAN)When an error is detected during the initial diagnosis for CAN controller of each control unit.Replace the control unit indicating "U1010".

SELF-DIAGNOSIS REFERENCE CHART

MONITOR ITEM (ON-BOARD DIAGNOSIS)

Note. For some models, CAN communication diagnosis result is received from the vehicle monitor.

Example: Vehicle Display

ItemResult indicatedError counterDescription
CAN_COMM (Initial diagnosis)OK0Normal at present
NG1 - 50Control unit error (The number indicates how many times diagnosis has been run.)
CAN_CIRC_1 (Transmission diagnosis)OK0Normal at present
UNKWN1 - 50Unable to transmit for 2 seconds or more at present. (The number indicates how many times diagnosis has been run.)
CAN_CIRC_2 - 9 (Reception diagnosis of each unit)OK0Normal at present
UNKWN1 - 50Unable to transmit for 2 seconds or more at present. (The number indicates how many times diagnosis has been run.)
Diagnosis not performed.
No control unit for receiving signals. (No applicable optional parts)

ITEM DESCRIPTION

INSPECTION OF VEHICLE CONDITION

Check whether the symptom is reproduced or not.

Note. Do not turn the ignition switch OFF or disconnect the battery cable while reproducing the error. The error may temporarily correct itself, making it difficult to determine the root cause.

CAUTIONNever apply 7.0 V or more to the measurement terminal. Use a tester with open terminal voltage of 7.0 V or less. Turn the ignition switch OFF and disconnect the battery cable from the negative terminal when checking the harness.

Diagnosis Procedure

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector B1 Harness connector M6 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. Harness connectors B208 and B32 Harness connectors B1 and M6 Check the continuity between the harness connectors. CONTINUITY REFERENCE CHART Harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. B32 9 B1 15J Existed 10 16J Existed Is the inspection result normal? YES >> GO TO 3. NO >> Repair the main line between the harness connectors B32 and B1.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Check the continuity between the harness connector and the data link connector. CONTINUITY REFERENCE CHART Harness connector Data link connector Continuity Connector No. Terminal No. Connector No. Terminal No. M6 15J M22 6 Existed 16J 14 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the driver seat control unit and the data link connector. NO >> Repair the main line between the harness connector M6 and the data link connector.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. ECM A/C auto amp. Check the continuity between the data link connector and the A/C auto amp. harness connector. CONTINUITY REFERENCE CHART Data link connector A/C auto amp. harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M22 6 M37 1 Existed 14 2 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the data link connector and the A/C auto amp. NO >> Repair the main line between the data link connector and the A/C auto amp.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector M1 Harness connector E30 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. A/C auto amp. Harness connectors M1 and E30 Check the continuity between the A/C auto amp. harness connector and the harness connector. CONTINUITY REFERENCE CHART A/C auto amp. harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M37 1 M1 15G Existed 2 8G Existed Is the inspection result normal? YES >> GO TO 3. NO >> Repair the main line between the A/C auto amp. and the harness connector M1.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the connector of ABS actuator and electric unit (control unit). Check the continuity between the harness connector and the ABS actuator and electric unit (control unit) harness connector. CONTINUITY REFERENCE CHART Harness connector ABS actuator and electric unit (control unit) harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E30 15G E26 26 Existed 8G 15 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the A/C auto amp. and the ABS actuator and electric unit (control unit). NO >> Repair the main line between the harness connector E30 and the ABS actuator and electric unit (control unit).

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. A/C auto amp. Harness connectors M1 and E30 Check the continuity between the harness connector and the A/C auto amp. harness connector. CONTINUITY REFERENCE CHART A/C auto amp. harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M37 1 M1 15G Existed 2 8G Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the A/C auto amp. and the air bag diagnosis sensor unit. NO >> Repair the main line between the A/C auto amp. and the air bag diagnosis sensor unit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector M1 Harness connector E30 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. A/C auto amp. Harness connectors M1 and E30 Check the continuity between the A/C auto amp. harness connector and the harness connector. CONTINUITY REFERENCE CHART A/C auto amp. harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M37 1 M1 15G Existed 2 8G Existed Is the inspection result normal? YES >> GO TO 3. NO >> Repair the main line between the air bag diagnosis sensor unit and the harness connector M1.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the connector of ABS actuator and electric unit (control unit). Check the continuity between the harness connector and the ABS actuator and electric unit (control unit) harness connector. CONTINUITY REFERENCE CHART Harness connector ABS actuator and electric unit (control unit) harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E30 15G E26 26 Existed 8G 15 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the air bag diagnosis sensor unit and the ABS actuator and electric unit (control unit). NO >> Repair the main line between the harness connector E30 and the ABS actuator and electric unit (control unit).

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). Models without automatic drive positioner ECM Harness connector E30 Harness connector M1 Models with automatic drive positioner ECM Harness connector E29 Harness connector B10 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ECM. Check the resistance between the ECM harness connector terminals. RESISTANCE REFERENCE CHART ECM harness connector Resistance (ohms) Connector No. Terminal No. E10 98 97 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the ECM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ECM. Refer to " «DIAGNOSIS PROCEDURE»(ref-388048-S17732725162011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the ECM. Refer to " «ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : DESCRIPTION»(ref-388048-S11114464122011022800000) ". YES (Past error) >> Error was detected in the ECM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). Driver seat control unit Harness connector B208 Harness connector B32 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of driver seat control unit. Check the resistance between the driver seat control unit harness connector terminals. RESISTANCE REFERENCE CHART Driver seat control unit harness connector Resistance (ohms) Connector No. Terminal No. B203 16 32 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the driver seat control unit branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the driver seat control unit. Refer to " «DRIVER SEAT CONTROL UNIT : DIAGNOSIS PROCEDURE»(ref-388077-S12269009592011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the driver seat control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-388077-S10702786732011022800000) ". YES (Past error) >> Error was detected in the driver seat control unit branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of BCM. Check the resistance between the BCM harness connector terminals. RESISTANCE REFERENCE CHART BCM harness connector Resistance (ohms) Connector No. Terminal No. M19 79 78 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the BCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the BCM. Refer to " «DIAGNOSIS PROCEDURE»(ref-388072-S07430202432011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the BCM. Refer to " «REMOVAL AND INSTALLATION»(ref-388072-S03584481162011022800000) ". YES (Past error) >> Error was detected in the BCM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Check the resistance between the data link connector terminals. RESISTANCE REFERENCE CHART Data link connector Resistance (ohms) Connector No. Terminal No. M22 6 14 Approx. 54 - 66 Is the measurement value within the specification? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the data link connector branch line circuit. NO >> Repair the data link connector branch line.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of combination meter. Check the resistance between the combination meter harness connector terminals. RESISTANCE REFERENCE CHART Combination meter harness connector Resistance (ohms) Connector No. Terminal No. M24 21 22 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the combination meter branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the combination meter. Refer to " «COMBINATION METER : DIAGNOSIS PROCEDURE»(ref-388063-S24702165052011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the combination meter. Refer to " «REMOVAL AND INSTALLATION»(ref-388063-S27023497762011022800000) ". YES (Past error) >> Error was detected in the combination meter branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the AV control unit for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of AV control unit. Check the resistance between the AV control unit harness connector terminals. Models without navigation system RESISTANCE REFERENCE CHART AV control unit harness connector Resistance (ohms) Connector No. Terminal No. M156 86 87 Approx. 54 - 66 Models with navigation system RESISTANCE REFERENCE CHART AV control unit harness connector Resistance (ohms) Connector No. Terminal No. M163 62 46 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the AV control unit branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the AV control unit. Refer to the following. Models with BOSE audio with color display: " «AV CONTROL UNIT : DIAGNOSIS PROCEDURE»(ref-388076-S32277639982011022800000) " Models with BOSE audio with color display with navigation system: " «AV CONTROL UNIT : DIAGNOSIS PROCEDURE»(ref-388076-S36904085272011022800000) " Is the inspection result normal? YES (Present error) >> Replace the AV control unit. Refer to the following. Models with BOSE audio with color display: " «REMOVAL AND INSTALLATION»(ref-388076-S35974645152011022800000) " Models with BOSE audio with color display with navigation system: " «REMOVAL AND INSTALLATION»(ref-388076-S12949408612011022800000) " YES (Past error) >> Error was detected in the AV control unit branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the A/C auto amp. for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of A/C auto amp. Check the resistance between the A/C auto amp. harness connector terminals. RESISTANCE REFERENCE CHART A/C auto amp. harness connector Resistance (ohms) Connector No. Terminal No. M37 1 2 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the A/C auto amp. branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the A/C auto amp. Refer to the following. Models with color display: " «A/C AUTO AMP. : DIAGNOSIS PROCEDURE»(ref-388068-S24957458322011022800000) " Models with monochrome display: " «A/C AUTO AMP. : DIAGNOSIS PROCEDURE»(ref-388068-S02096636482011022800000) " Is the inspection result normal? YES (Present error) >> Replace the A/C auto amp. Refer to the following. Models with color display: " «REMOVAL AND INSTALLATION»(ref-388068-S00952203732011022800000) " Models monochrome display: " «REMOVAL AND INSTALLATION»(ref-388068-S25220165202011022800000) " YES (Past error) >> Error was detected in the A/C auto amp. branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of steering angle sensor. Check the resistance between the steering angle sensor harness connector terminals. RESISTANCE REFERENCE CHART Steering angle sensor harness connector Resistance (ohms) Connector No. Terminal No. M53 5 2 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the steering angle sensor branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the steering angle sensor. Refer to " «WIRING DIAGRAM»(ref-388064-S29113520302011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the steering angle sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-388064-S30163605812011022800000) ". YES (Past error) >> Error was detected in the steering angle sensor branch line. NO >> Repair the power supply and the ground circuit.
WARNINGBefore servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more. (To discharge backup capacitor.) Never use unspecified tester or other measuring device.
  1. CHECK CONNECTOR Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Replace the terminal and connector.
  2. CHECK AIR BAG DIAGNOSIS SENSOR UNIT Check the air bag diagnosis sensor unit. Refer to " «WORK FLOW»(ref-388079-S40192886802011022800000) ". Is the inspection result normal? YES >> Replace the main harness. NO >> Replace parts whose air bag system has a malfunction.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ABS actuator and electric unit (control unit). Check the resistance between the ABS actuator and electric unit (control unit) harness connector terminals. RESISTANCE REFERENCE CHART ABS actuator and electric unit (control unit) harness connector Resistance (ohms) Connector No. Terminal No. E26 26 15 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the ABS actuator and electric unit (control unit) branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to " «WIRING DIAGRAM»(ref-388064-S29113520302011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the ABS actuator and electric unit (control unit). Refer to " «EXPLODED VIEW»(ref-388064-S41758221492011022800000) ". YES (Past error) >> Error was detected in the ABS actuator and electric unit (control unit) branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). TCM Harness connector F1 Harness connector E3 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of TCM. Check the resistance between the TCM harness connector terminals. RESISTANCE REFERENCE CHART TCM harness connector Resistance (ohms) Connector No. Terminal No. F15 32 31 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the TCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the TCM. Refer to " «WIRING DIAGRAM»(ref-388054-S42131972772011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the TCM. Refer to " «EXPLODED VIEW»(ref-388054-S27009374622011022800000) ". YES (Past error) >> Error was detected in the TCM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of IPDM E/R. Check the resistance between the IPDM E/R harness connector terminals. RESISTANCE REFERENCE CHART IPDM E/R harness connector Resistance (ohms) Connector No. Terminal No. E17 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the IPDM E/R branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the IPDM E/R. Refer to " «DIAGNOSIS PROCEDURE»(ref-388055-S17162479042011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the IPDM E/R. Refer to " «REMOVAL AND INSTALLATION»(ref-388055-S00476911162011022800000) ". YES (Past error) >> Error was detected in the IPDM E/R branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

Scheme 9

Scheme 9: Diagnosis Procedure
Scheme 9: Diagnosis Procedure
  1. CONNECTOR INSPECTION Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect all the unit connectors on CAN communication system. Check terminals and connectors for damage, bend and loose connection. Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector terminals. CONTINUITY REFERENCE CHART Data link connector Continuity Connector No. Terminal No. M22 6 14 Not existed Is the inspection result normal? YES >> GO TO 3. NO >> Check the harness and repair the root cause.
  3. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector and the ground. CONTINUITY REFERENCE CHART Data link connector Ground Continuity Connector No. Terminal No. M22 6 Not existed 14 Not existed Is the inspection result normal? YES >> GO TO 4. NO >> Check the harness and repair the root cause.
  4. CHECK ECM AND IPDM E/R TERMINATION CIRCUIT Remove the ECM and the IPDM E/R. Check the resistance between the ECM terminals. RESISTANCE REFERENCE CHART ECM Resistance (ohms) Terminal No. 98 97 Approx. 108 - 132 Check the resistance between the IPDM E/R terminals. RESISTANCE REFERENCE CHART IPDM E/R Resistance (ohms) Terminal No. 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 5. NO >> Replace the ECM and/or the IPDM E/R.
  5. CHECK SYMPTOM Connect all the connectors. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. Inspection result Reproduced >> GO TO 6. Non-reproduced >> Start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.
  6. CHECK UNIT REPRODUCTION Perform the reproduction test as per the following procedure for each unit. Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect one of the unit connectors of CAN communication system. NOTE: ECM and IPDM E/R have a termination circuit. Check other units first. Connect the battery cable to the negative terminal. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. NOTE: Although unit-related error symptoms occur, do not confuse them with other symptoms. Inspection result Reproduced >> Connect the connector. Check other units as per the above procedure. Non-reproduced >> Replace the unit whose connector was disconnected.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. ECM A/C auto amp. Check the continuity between the data link connector and the A/C auto amp. harness connector. CONTINUITY REFERENCE CHART Data link connector A/C auto amp. harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M22 6 M37 1 Existed 14 2 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the data link connector and the A/C auto amp. NO >> Repair the main line between the data link connector and the A/C auto amp.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. A/C auto amp. Harness connectors M1 and E30 Check the continuity between the harness connector and the A/C auto amp. harness connector. CONTINUITY REFERENCE CHART A/C auto amp. harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M37 1 M1 15G Existed 2 8G Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the A/C auto amp. and the air bag diagnosis sensor unit. NO >> Repair the main line between the A/C auto amp. and the air bag diagnosis sensor unit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector M1 Harness connector E30 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. A/C auto amp. Harness connectors M1 and E30 Check the continuity between the A/C auto amp. harness connector and the harness connector. CONTINUITY REFERENCE CHART A/C auto amp. harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M37 1 M1 15G Existed 2 8G Existed Is the inspection result normal? YES >> GO TO 3. NO >> Repair the main line between the air bag diagnosis sensor unit and the harness connector M1.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the connector of ABS actuator and electric unit (control unit). Check the continuity between the harness connector and the ABS actuator and electric unit (control unit) harness connector. CONTINUITY REFERENCE CHART Harness connector ABS actuator and electric unit (control unit) harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E30 15G E26 26 Existed 8G 15 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the air bag diagnosis sensor unit and the ABS actuator and electric unit (control unit). NO >> Repair the main line between the harness connector E30 and the ABS actuator and electric unit (control unit).

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). Models without automatic drive positioner ECM Harness connector E30 Harness connector M1 Models with automatic drive positioner ECM Harness connector E29 Harness connector B10 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ECM. Check the resistance between the ECM harness connector terminals. RESISTANCE REFERENCE CHART ECM harness connector Resistance (ohms) Connector No. Terminal No. E10 98 97 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the ECM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ECM. Refer to " «DIAGNOSIS PROCEDURE»(ref-388048-S17732725162011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the ECM. Refer to " «ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : DESCRIPTION»(ref-388048-S11114464122011022800000) ". YES (Past error) >> Error was detected in the ECM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of BCM. Check the resistance between the BCM harness connector terminals. RESISTANCE REFERENCE CHART BCM harness connector Resistance (ohms) Connector No. Terminal No. M19 79 78 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the BCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the BCM. Refer to " «DIAGNOSIS PROCEDURE»(ref-388072-S07430202432011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the BCM. Refer to " «REMOVAL AND INSTALLATION»(ref-388072-S03584481162011022800000) ". YES (Past error) >> Error was detected in the BCM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Check the resistance between the data link connector terminals. RESISTANCE REFERENCE CHART Data link connector Resistance (ohms) Connector No. Terminal No. M22 6 14 Approx. 54 - 66 Is the measurement value within the specification? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the data link connector branch line circuit. NO >> Repair the data link connector branch line.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of combination meter. Check the resistance between the combination meter harness connector terminals. RESISTANCE REFERENCE CHART Combination meter harness connector Resistance (ohms) Connector No. Terminal No. M24 21 22 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the combination meter branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the combination meter. Refer to " «COMBINATION METER : DIAGNOSIS PROCEDURE»(ref-388063-S24702165052011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the combination meter. Refer to " «REMOVAL AND INSTALLATION»(ref-388063-S27023497762011022800000) ". YES (Past error) >> Error was detected in the combination meter branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the A/C auto amp. for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of A/C auto amp. Check the resistance between the A/C auto amp. harness connector terminals. RESISTANCE REFERENCE CHART A/C auto amp. harness connector Resistance (ohms) Connector No. Terminal No. M37 1 2 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the A/C auto amp. branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the A/C auto amp. Refer to the following. Models with color display: " «A/C AUTO AMP. : DIAGNOSIS PROCEDURE»(ref-388068-S24957458322011022800000) " Models with monochrome display: " «A/C AUTO AMP. : DIAGNOSIS PROCEDURE»(ref-388068-S02096636482011022800000) " Is the inspection result normal? YES (Present error) >> Replace the A/C auto amp. Refer to the following. Models with color display: " «REMOVAL AND INSTALLATION»(ref-388068-S00952203732011022800000) " Models monochrome display: " «REMOVAL AND INSTALLATION»(ref-388068-S25220165202011022800000) " YES (Past error) >> Error was detected in the A/C auto amp. branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of steering angle sensor. Check the resistance between the steering angle sensor harness connector terminals. RESISTANCE REFERENCE CHART Steering angle sensor harness connector Resistance (ohms) Connector No. Terminal No. M53 5 2 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the steering angle sensor branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the steering angle sensor. Refer to " «WIRING DIAGRAM»(ref-388064-S29113520302011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the steering angle sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-388064-S30163605812011022800000) ". YES (Past error) >> Error was detected in the steering angle sensor branch line. NO >> Repair the power supply and the ground circuit.
WARNINGBefore servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more. (To discharge backup capacitor.) Never use unspecified tester or other measuring device.
  1. CHECK CONNECTOR Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Replace the terminal and connector.
  2. CHECK AIR BAG DIAGNOSIS SENSOR UNIT Check the air bag diagnosis sensor unit. Refer to " «WORK FLOW»(ref-388079-S40192886802011022800000) ". Is the inspection result normal? YES >> Replace the main harness. NO >> Replace parts whose air bag system has a malfunction.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ABS actuator and electric unit (control unit). Check the resistance between the ABS actuator and electric unit (control unit) harness connector terminals. RESISTANCE REFERENCE CHART ABS actuator and electric unit (control unit) harness connector Resistance (ohms) Connector No. Terminal No. E26 26 15 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the ABS actuator and electric unit (control unit) branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to " «WIRING DIAGRAM»(ref-388064-S29113520302011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the ABS actuator and electric unit (control unit). Refer to " «EXPLODED VIEW»(ref-388064-S41758221492011022800000) ". YES (Past error) >> Error was detected in the ABS actuator and electric unit (control unit) branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). TCM Harness connector F1 Harness connector E3 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of TCM. Check the resistance between the TCM harness connector terminals. RESISTANCE REFERENCE CHART TCM harness connector Resistance (ohms) Connector No. Terminal No. F15 32 31 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the TCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the TCM. Refer to " «WIRING DIAGRAM»(ref-388054-S42131972772011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the TCM. Refer to " «EXPLODED VIEW»(ref-388054-S27009374622011022800000) ". YES (Past error) >> Error was detected in the TCM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of IPDM E/R. Check the resistance between the IPDM E/R harness connector terminals. RESISTANCE REFERENCE CHART IPDM E/R harness connector Resistance (ohms) Connector No. Terminal No. E17 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the IPDM E/R branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the IPDM E/R. Refer to " «DIAGNOSIS PROCEDURE»(ref-388055-S17162479042011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the IPDM E/R. Refer to " «REMOVAL AND INSTALLATION»(ref-388055-S00476911162011022800000) ". YES (Past error) >> Error was detected in the IPDM E/R branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CONNECTOR INSPECTION Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect all the unit connectors on CAN communication system. Check terminals and connectors for damage, bend and loose connection. Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector terminals. CONTINUITY REFERENCE CHART Data link connector Continuity Connector No. Terminal No. M22 6 14 Not existed Is the inspection result normal? YES >> GO TO 3. NO >> Check the harness and repair the root cause.
  3. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector and the ground. CONTINUITY REFERENCE CHART Data link connector Ground Continuity Connector No. Terminal No. M22 6 Not existed 14 Not existed Is the inspection result normal? YES >> GO TO 4. NO >> Check the harness and repair the root cause.
  4. CHECK ECM AND IPDM E/R TERMINATION CIRCUIT Remove the ECM and the IPDM E/R. Check the resistance between the ECM terminals. RESISTANCE REFERENCE CHART ECM Resistance (ohms) Terminal No. 98 97 Approx. 108 - 132 Check the resistance between the IPDM E/R terminals. RESISTANCE REFERENCE CHART IPDM E/R Resistance (ohms) Terminal No. 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 5. NO >> Replace the ECM and/or the IPDM E/R.
  5. CHECK SYMPTOM Connect all the connectors. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. Inspection result Reproduced >> GO TO 6. Non-reproduced >> Start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.
  6. CHECK UNIT REPRODUCTION Perform the reproduction test as per the following procedure for each unit. Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect one of the unit connectors of CAN communication system. NOTE: ECM and IPDM E/R have a termination circuit. Check other units first. Connect the battery cable to the negative terminal. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. NOTE: Although unit-related error symptoms occur, do not confuse them with other symptoms. Inspection result Reproduced >> Connect the connector. Check other units as per the above procedure. Non-reproduced >> Replace the unit whose connector was disconnected.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector B1 Harness connector M6 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. Harness connectors B208 and B32 Harness connectors B1 and M6 Check the continuity between the harness connectors. CONTINUITY REFERENCE CHART Harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. B32 9 B1 15J Existed 10 16J Existed Is the inspection result normal? YES >> GO TO 3. NO >> Repair the main line between the harness connectors B32 and B1.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Check the continuity between the harness connector and the data link connector. CONTINUITY REFERENCE CHART Harness connector Data link connector Continuity Connector No. Terminal No. Connector No. Terminal No. M6 15J M22 6 Existed 16J 14 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the driver seat control unit and the data link connector. NO >> Repair the main line between the harness connector M6 and the data link connector.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. ECM A/C auto amp. Check the continuity between the data link connector and the A/C auto amp. harness connector. CONTINUITY REFERENCE CHART Data link connector A/C auto amp. harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M22 6 M37 1 Existed 14 2 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the data link connector and the A/C auto amp. NO >> Repair the main line between the data link connector and the A/C auto amp.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. A/C auto amp. Harness connectors M1 and E30 Check the continuity between the harness connector and the A/C auto amp. harness connector. CONTINUITY REFERENCE CHART A/C auto amp. harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M37 1 M1 15G Existed 2 8G Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the A/C auto amp. and the air bag diagnosis sensor unit. NO >> Repair the main line between the A/C auto amp. and the air bag diagnosis sensor unit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector M1 Harness connector E30 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. A/C auto amp. Harness connectors M1 and E30 Check the continuity between the A/C auto amp. harness connector and the harness connector. CONTINUITY REFERENCE CHART A/C auto amp. harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M37 1 M1 15G Existed 2 8G Existed Is the inspection result normal? YES >> GO TO 3. NO >> Repair the main line between the air bag diagnosis sensor unit and the harness connector M1.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the connector of ABS actuator and electric unit (control unit). Check the continuity between the harness connector and the ABS actuator and electric unit (control unit) harness connector. CONTINUITY REFERENCE CHART Harness connector ABS actuator and electric unit (control unit) harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E30 15G E26 26 Existed 8G 15 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the air bag diagnosis sensor unit and the ABS actuator and electric unit (control unit). NO >> Repair the main line between the harness connector E30 and the ABS actuator and electric unit (control unit).

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). Models without automatic drive positioner ECM Harness connector E30 Harness connector M1 Models with automatic drive positioner ECM Harness connector E29 Harness connector B10 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ECM. Check the resistance between the ECM harness connector terminals. RESISTANCE REFERENCE CHART ECM harness connector Resistance (ohms) Connector No. Terminal No. E10 98 97 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the ECM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ECM. Refer to " «DIAGNOSIS PROCEDURE»(ref-388048-S17732725162011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the ECM. Refer to " «ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : DESCRIPTION»(ref-388048-S11114464122011022800000) ". YES (Past error) >> Error was detected in the ECM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). Driver seat control unit Harness connector B208 Harness connector B32 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of driver seat control unit. Check the resistance between the driver seat control unit harness connector terminals. RESISTANCE REFERENCE CHART Driver seat control unit harness connector Resistance (ohms) Connector No. Terminal No. B203 16 32 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the driver seat control unit branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the driver seat control unit. Refer to " «DRIVER SEAT CONTROL UNIT : DIAGNOSIS PROCEDURE»(ref-388077-S12269009592011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the driver seat control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-388077-S10702786732011022800000) ". YES (Past error) >> Error was detected in the driver seat control unit branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of BCM. Check the resistance between the BCM harness connector terminals. RESISTANCE REFERENCE CHART BCM harness connector Resistance (ohms) Connector No. Terminal No. M19 79 78 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the BCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the BCM. Refer to " «DIAGNOSIS PROCEDURE»(ref-388072-S07430202432011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the BCM. Refer to " «REMOVAL AND INSTALLATION»(ref-388072-S03584481162011022800000) ". YES (Past error) >> Error was detected in the BCM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Check the resistance between the data link connector terminals. RESISTANCE REFERENCE CHART Data link connector Resistance (ohms) Connector No. Terminal No. M22 6 14 Approx. 54 - 66 Is the measurement value within the specification? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the data link connector branch line circuit. NO >> Repair the data link connector branch line.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of combination meter. Check the resistance between the combination meter harness connector terminals. RESISTANCE REFERENCE CHART Combination meter harness connector Resistance (ohms) Connector No. Terminal No. M24 21 22 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the combination meter branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the combination meter. Refer to " «COMBINATION METER : DIAGNOSIS PROCEDURE»(ref-388063-S24702165052011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the combination meter. Refer to " «REMOVAL AND INSTALLATION»(ref-388063-S27023497762011022800000) ". YES (Past error) >> Error was detected in the combination meter branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the A/C auto amp. for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of A/C auto amp. Check the resistance between the A/C auto amp. harness connector terminals. RESISTANCE REFERENCE CHART A/C auto amp. harness connector Resistance (ohms) Connector No. Terminal No. M37 1 2 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the A/C auto amp. branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the A/C auto amp. Refer to the following. Models with color display: " «A/C AUTO AMP. : DIAGNOSIS PROCEDURE»(ref-388068-S24957458322011022800000) " Models with monochrome display: " «A/C AUTO AMP. : DIAGNOSIS PROCEDURE»(ref-388068-S02096636482011022800000) " Is the inspection result normal? YES (Present error) >> Replace the A/C auto amp. Refer to the following. Models with color display: " «REMOVAL AND INSTALLATION»(ref-388068-S00952203732011022800000) " Models monochrome display: " «REMOVAL AND INSTALLATION»(ref-388068-S25220165202011022800000) " YES (Past error) >> Error was detected in the A/C auto amp. branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of steering angle sensor. Check the resistance between the steering angle sensor harness connector terminals. RESISTANCE REFERENCE CHART Steering angle sensor harness connector Resistance (ohms) Connector No. Terminal No. M53 5 2 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the steering angle sensor branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the steering angle sensor. Refer to " «WIRING DIAGRAM»(ref-388064-S29113520302011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the steering angle sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-388064-S30163605812011022800000) ". YES (Past error) >> Error was detected in the steering angle sensor branch line. NO >> Repair the power supply and the ground circuit.
WARNINGBefore servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more. (To discharge backup capacitor.) Never use unspecified tester or other measuring device.
  1. CHECK CONNECTOR Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Replace the terminal and connector.
  2. CHECK AIR BAG DIAGNOSIS SENSOR UNIT Check the air bag diagnosis sensor unit. Refer to " «WORK FLOW»(ref-388079-S40192886802011022800000) ". Is the inspection result normal? YES >> Replace the main harness. NO >> Replace parts whose air bag system has a malfunction.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ABS actuator and electric unit (control unit). Check the resistance between the ABS actuator and electric unit (control unit) harness connector terminals. RESISTANCE REFERENCE CHART ABS actuator and electric unit (control unit) harness connector Resistance (ohms) Connector No. Terminal No. E26 26 15 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the ABS actuator and electric unit (control unit) branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to " «WIRING DIAGRAM»(ref-388064-S29113520302011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the ABS actuator and electric unit (control unit). Refer to " «EXPLODED VIEW»(ref-388064-S41758221492011022800000) ". YES (Past error) >> Error was detected in the ABS actuator and electric unit (control unit) branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). TCM Harness connector F1 Harness connector E3 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of TCM. Check the resistance between the TCM harness connector terminals. RESISTANCE REFERENCE CHART TCM harness connector Resistance (ohms) Connector No. Terminal No. F15 32 31 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the TCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the TCM. Refer to " «WIRING DIAGRAM»(ref-388054-S42131972772011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the TCM. Refer to " «EXPLODED VIEW»(ref-388054-S27009374622011022800000) ". YES (Past error) >> Error was detected in the TCM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of IPDM E/R. Check the resistance between the IPDM E/R harness connector terminals. RESISTANCE REFERENCE CHART IPDM E/R harness connector Resistance (ohms) Connector No. Terminal No. E17 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the IPDM E/R branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the IPDM E/R. Refer to " «DIAGNOSIS PROCEDURE»(ref-388055-S17162479042011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the IPDM E/R. Refer to " «REMOVAL AND INSTALLATION»(ref-388055-S00476911162011022800000) ". YES (Past error) >> Error was detected in the IPDM E/R branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CONNECTOR INSPECTION Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect all the unit connectors on CAN communication system. Check terminals and connectors for damage, bend and loose connection. Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector terminals. CONTINUITY REFERENCE CHART Data link connector Continuity Connector No. Terminal No. M22 6 14 Not existed Is the inspection result normal? YES >> GO TO 3. NO >> Check the harness and repair the root cause.
  3. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector and the ground. CONTINUITY REFERENCE CHART Data link connector Ground Continuity Connector No. Terminal No. M22 6 Not existed 14 Not existed Is the inspection result normal? YES >> GO TO 4. NO >> Check the harness and repair the root cause.
  4. CHECK ECM AND IPDM E/R TERMINATION CIRCUIT Remove the ECM and the IPDM E/R. Check the resistance between the ECM terminals. RESISTANCE REFERENCE CHART ECM Resistance (ohms) Terminal No. 98 97 Approx. 108 - 132 Check the resistance between the IPDM E/R terminals. RESISTANCE REFERENCE CHART IPDM E/R Resistance (ohms) Terminal No. 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 5. NO >> Replace the ECM and/or the IPDM E/R.
  5. CHECK SYMPTOM Connect all the connectors. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. Inspection result Reproduced >> GO TO 6. Non-reproduced >> Start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.
  6. CHECK UNIT REPRODUCTION Perform the reproduction test as per the following procedure for each unit. Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect one of the unit connectors of CAN communication system. NOTE: ECM and IPDM E/R have a termination circuit. Check other units first. Connect the battery cable to the negative terminal. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. NOTE: Although unit-related error symptoms occur, do not confuse them with other symptoms. Inspection result Reproduced >> Connect the connector. Check other units as per the above procedure. Non-reproduced >> Replace the unit whose connector was disconnected.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. ECM A/C auto amp. Check the continuity between the data link connector and the A/C auto amp. harness connector. CONTINUITY REFERENCE CHART Data link connector A/C auto amp. harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M22 6 M37 1 Existed 14 2 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the data link connector and the A/C auto amp. NO >> Repair the main line between the data link connector and the A/C auto amp.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. A/C auto amp. Harness connectors M1 and E30 Check the continuity between the harness connector and the A/C auto amp. harness connector. CONTINUITY REFERENCE CHART A/C auto amp. harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M37 1 M1 15G Existed 2 8G Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the A/C auto amp. and the air bag diagnosis sensor unit. NO >> Repair the main line between the A/C auto amp. and the air bag diagnosis sensor unit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector M1 Harness connector E30 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. A/C auto amp. Harness connectors M1 and E30 Check the continuity between the A/C auto amp. harness connector and the harness connector. CONTINUITY REFERENCE CHART A/C auto amp. harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M37 1 M1 15G Existed 2 8G Existed Is the inspection result normal? YES >> GO TO 3. NO >> Repair the main line between the air bag diagnosis sensor unit and the harness connector M1.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the connector of ABS actuator and electric unit (control unit). Check the continuity between the harness connector and the ABS actuator and electric unit (control unit) harness connector. CONTINUITY REFERENCE CHART Harness connector ABS actuator and electric unit (control unit) harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E30 15G E26 26 Existed 8G 15 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the air bag diagnosis sensor unit and the ABS actuator and electric unit (control unit). NO >> Repair the main line between the harness connector E30 and the ABS actuator and electric unit (control unit).

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). Models without automatic drive positioner ECM Harness connector E30 Harness connector M1 Models with automatic drive positioner ECM Harness connector E29 Harness connector B10 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ECM. Check the resistance between the ECM harness connector terminals. RESISTANCE REFERENCE CHART ECM harness connector Resistance (ohms) Connector No. Terminal No. E10 98 97 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the ECM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ECM. Refer to " «DIAGNOSIS PROCEDURE»(ref-388048-S17732725162011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the ECM. Refer to " «ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : DESCRIPTION»(ref-388048-S11114464122011022800000) ". YES (Past error) >> Error was detected in the ECM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of BCM. Check the resistance between the BCM harness connector terminals. RESISTANCE REFERENCE CHART BCM harness connector Resistance (ohms) Connector No. Terminal No. M19 79 78 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the BCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the BCM. Refer to " «DIAGNOSIS PROCEDURE»(ref-388072-S07430202432011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the BCM. Refer to " «REMOVAL AND INSTALLATION»(ref-388072-S03584481162011022800000) ". YES (Past error) >> Error was detected in the BCM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Check the resistance between the data link connector terminals. RESISTANCE REFERENCE CHART Data link connector Resistance (ohms) Connector No. Terminal No. M22 6 14 Approx. 54 - 66 Is the measurement value within the specification? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the data link connector branch line circuit. NO >> Repair the data link connector branch line.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of combination meter. Check the resistance between the combination meter harness connector terminals. RESISTANCE REFERENCE CHART Combination meter harness connector Resistance (ohms) Connector No. Terminal No. M24 21 22 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the combination meter branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the combination meter. Refer to " «COMBINATION METER : DIAGNOSIS PROCEDURE»(ref-388063-S24702165052011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the combination meter. Refer to " «REMOVAL AND INSTALLATION»(ref-388063-S27023497762011022800000) ". YES (Past error) >> Error was detected in the combination meter branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the AV control unit for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of AV control unit. Check the resistance between the AV control unit harness connector terminals. Models without navigation system RESISTANCE REFERENCE CHART AV control unit harness connector Resistance (ohms) Connector No. Terminal No. M156 86 87 Approx. 54 - 66 Models with navigation system RESISTANCE REFERENCE CHART AV control unit harness connector Resistance (ohms) Connector No. Terminal No. M163 62 46 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the AV control unit branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the AV control unit. Refer to the following. Models with BOSE audio with color display: " «AV CONTROL UNIT : DIAGNOSIS PROCEDURE»(ref-388076-S32277639982011022800000) " Models with BOSE audio with color display with navigation system: " «AV CONTROL UNIT : DIAGNOSIS PROCEDURE»(ref-388076-S36904085272011022800000) " Is the inspection result normal? YES (Present error) >> Replace the AV control unit. Refer to the following. Models with BOSE audio with color display: " «REMOVAL AND INSTALLATION»(ref-388076-S35974645152011022800000) " Models with BOSE audio with color display with navigation system: " «REMOVAL AND INSTALLATION»(ref-388076-S12949408612011022800000) " YES (Past error) >> Error was detected in the AV control unit branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the A/C auto amp. for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of A/C auto amp. Check the resistance between the A/C auto amp. harness connector terminals. RESISTANCE REFERENCE CHART A/C auto amp. harness connector Resistance (ohms) Connector No. Terminal No. M37 1 2 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the A/C auto amp. branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the A/C auto amp. Refer to the following. Models with color display: " «A/C AUTO AMP. : DIAGNOSIS PROCEDURE»(ref-388068-S24957458322011022800000) " Models with monochrome display: " «A/C AUTO AMP. : DIAGNOSIS PROCEDURE»(ref-388068-S02096636482011022800000) " Is the inspection result normal? YES (Present error) >> Replace the A/C auto amp. Refer to the following. Models with color display: " «REMOVAL AND INSTALLATION»(ref-388068-S00952203732011022800000) " Models monochrome display: " «REMOVAL AND INSTALLATION»(ref-388068-S25220165202011022800000) " YES (Past error) >> Error was detected in the A/C auto amp. branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of steering angle sensor. Check the resistance between the steering angle sensor harness connector terminals. RESISTANCE REFERENCE CHART Steering angle sensor harness connector Resistance (ohms) Connector No. Terminal No. M53 5 2 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the steering angle sensor branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the steering angle sensor. Refer to " «WIRING DIAGRAM»(ref-388064-S29113520302011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the steering angle sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-388064-S30163605812011022800000) ". YES (Past error) >> Error was detected in the steering angle sensor branch line. NO >> Repair the power supply and the ground circuit.
WARNINGBefore servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more. (To discharge backup capacitor.) Never use unspecified tester or other measuring device.
  1. CHECK CONNECTOR Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Replace the terminal and connector.
  2. CHECK AIR BAG DIAGNOSIS SENSOR UNIT Check the air bag diagnosis sensor unit. Refer to " «WORK FLOW»(ref-388079-S40192886802011022800000) ". Is the inspection result normal? YES >> Replace the main harness. NO >> Replace parts whose air bag system has a malfunction.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ABS actuator and electric unit (control unit). Check the resistance between the ABS actuator and electric unit (control unit) harness connector terminals. RESISTANCE REFERENCE CHART ABS actuator and electric unit (control unit) harness connector Resistance (ohms) Connector No. Terminal No. E26 26 15 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the ABS actuator and electric unit (control unit) branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to " «WIRING DIAGRAM»(ref-388064-S29113520302011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the ABS actuator and electric unit (control unit). Refer to " «EXPLODED VIEW»(ref-388064-S41758221492011022800000) ". YES (Past error) >> Error was detected in the ABS actuator and electric unit (control unit) branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). TCM Harness connector F1 Harness connector E3 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of TCM. Check the resistance between the TCM harness connector terminals. RESISTANCE REFERENCE CHART TCM harness connector Resistance (ohms) Connector No. Terminal No. F15 32 31 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the TCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the TCM. Refer to " «WIRING DIAGRAM»(ref-388054-S42131972772011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the TCM. Refer to " «EXPLODED VIEW»(ref-388054-S27009374622011022800000) ". YES (Past error) >> Error was detected in the TCM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of IPDM E/R. Check the resistance between the IPDM E/R harness connector terminals. RESISTANCE REFERENCE CHART IPDM E/R harness connector Resistance (ohms) Connector No. Terminal No. E17 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the IPDM E/R branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the IPDM E/R. Refer to " «DIAGNOSIS PROCEDURE»(ref-388055-S17162479042011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the IPDM E/R. Refer to " «REMOVAL AND INSTALLATION»(ref-388055-S00476911162011022800000) ". YES (Past error) >> Error was detected in the IPDM E/R branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CONNECTOR INSPECTION Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect all the unit connectors on CAN communication system. Check terminals and connectors for damage, bend and loose connection. Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector terminals. CONTINUITY REFERENCE CHART Data link connector Continuity Connector No. Terminal No. M22 6 14 Not existed Is the inspection result normal? YES >> GO TO 3. NO >> Check the harness and repair the root cause.
  3. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector and the ground. CONTINUITY REFERENCE CHART Data link connector Ground Continuity Connector No. Terminal No. M22 6 Not existed 14 Not existed Is the inspection result normal? YES >> GO TO 4. NO >> Check the harness and repair the root cause.
  4. CHECK ECM AND IPDM E/R TERMINATION CIRCUIT Remove the ECM and the IPDM E/R. Check the resistance between the ECM terminals. RESISTANCE REFERENCE CHART ECM Resistance (ohms) Terminal No. 98 97 Approx. 108 - 132 Check the resistance between the IPDM E/R terminals. RESISTANCE REFERENCE CHART IPDM E/R Resistance (ohms) Terminal No. 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 5. NO >> Replace the ECM and/or the IPDM E/R.
  5. CHECK SYMPTOM Connect all the connectors. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. Inspection result Reproduced >> GO TO 6. Non-reproduced >> Start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.
  6. CHECK UNIT REPRODUCTION Perform the reproduction test as per the following procedure for each unit. Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect one of the unit connectors of CAN communication system. NOTE: ECM and IPDM E/R have a termination circuit. Check other units first. Connect the battery cable to the negative terminal. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. NOTE: Although unit-related error symptoms occur, do not confuse them with other symptoms. Inspection result Reproduced >> Connect the connector. Check other units as per the above procedure. Non-reproduced >> Replace the unit whose connector was disconnected.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector B1 Harness connector M6 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. Harness connectors B208 and B32 Harness connectors B1 and M6 Check the continuity between the harness connectors. CONTINUITY REFERENCE CHART Harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. B32 9 B1 15J Existed 10 16J Existed Is the inspection result normal? YES >> GO TO 3. NO >> Repair the main line between the harness connectors B32 and B1.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Check the continuity between the harness connector and the data link connector. CONTINUITY REFERENCE CHART Harness connector Data link connector Continuity Connector No. Terminal No. Connector No. Terminal No. M6 15J M22 6 Existed 16J 14 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the driver seat control unit and the data link connector. NO >> Repair the main line between the harness connector M6 and the data link connector.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. ECM A/C auto amp. Check the continuity between the data link connector and the A/C auto amp. harness connector. CONTINUITY REFERENCE CHART Data link connector A/C auto amp. harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M22 6 M37 1 Existed 14 2 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the data link connector and the A/C auto amp. NO >> Repair the main line between the data link connector and the A/C auto amp.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. A/C auto amp. Harness connectors M1 and E30 Check the continuity between the harness connector and the A/C auto amp. harness connector. CONTINUITY REFERENCE CHART A/C auto amp. harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M37 1 M1 15G Existed 2 8G Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the A/C auto amp. and the air bag diagnosis sensor unit. NO >> Repair the main line between the A/C auto amp. and the air bag diagnosis sensor unit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector M1 Harness connector E30 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. A/C auto amp. Harness connectors M1 and E30 Check the continuity between the A/C auto amp. harness connector and the harness connector. CONTINUITY REFERENCE CHART A/C auto amp. harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M37 1 M1 15G Existed 2 8G Existed Is the inspection result normal? YES >> GO TO 3. NO >> Repair the main line between the air bag diagnosis sensor unit and the harness connector M1.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the connector of ABS actuator and electric unit (control unit). Check the continuity between the harness connector and the ABS actuator and electric unit (control unit) harness connector. CONTINUITY REFERENCE CHART Harness connector ABS actuator and electric unit (control unit) harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E30 15G E26 26 Existed 8G 15 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the air bag diagnosis sensor unit and the ABS actuator and electric unit (control unit). NO >> Repair the main line between the harness connector E30 and the ABS actuator and electric unit (control unit).

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). Models without automatic drive positioner ECM Harness connector E30 Harness connector M1 Models with automatic drive positioner ECM Harness connector E29 Harness connector B10 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ECM. Check the resistance between the ECM harness connector terminals. RESISTANCE REFERENCE CHART ECM harness connector Resistance (ohms) Connector No. Terminal No. E10 98 97 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the ECM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ECM. Refer to " «DIAGNOSIS PROCEDURE»(ref-388048-S17732725162011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the ECM. Refer to " «ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : DESCRIPTION»(ref-388048-S11114464122011022800000) ". YES (Past error) >> Error was detected in the ECM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). Driver seat control unit Harness connector B208 Harness connector B32 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of driver seat control unit. Check the resistance between the driver seat control unit harness connector terminals. RESISTANCE REFERENCE CHART Driver seat control unit harness connector Resistance (ohms) Connector No. Terminal No. B203 16 32 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the driver seat control unit branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the driver seat control unit. Refer to " «DRIVER SEAT CONTROL UNIT : DIAGNOSIS PROCEDURE»(ref-388077-S12269009592011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the driver seat control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-388077-S10702786732011022800000) ". YES (Past error) >> Error was detected in the driver seat control unit branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of BCM. Check the resistance between the BCM harness connector terminals. RESISTANCE REFERENCE CHART BCM harness connector Resistance (ohms) Connector No. Terminal No. M19 79 78 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the BCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the BCM. Refer to " «DIAGNOSIS PROCEDURE»(ref-388072-S07430202432011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the BCM. Refer to " «REMOVAL AND INSTALLATION»(ref-388072-S03584481162011022800000) ". YES (Past error) >> Error was detected in the BCM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Check the resistance between the data link connector terminals. RESISTANCE REFERENCE CHART Data link connector Resistance (ohms) Connector No. Terminal No. M22 6 14 Approx. 54 - 66 Is the measurement value within the specification? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the data link connector branch line circuit. NO >> Repair the data link connector branch line.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of combination meter. Check the resistance between the combination meter harness connector terminals. RESISTANCE REFERENCE CHART Combination meter harness connector Resistance (ohms) Connector No. Terminal No. M24 21 22 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the combination meter branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the combination meter. Refer to " «COMBINATION METER : DIAGNOSIS PROCEDURE»(ref-388063-S24702165052011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the combination meter. Refer to " «REMOVAL AND INSTALLATION»(ref-388063-S27023497762011022800000) ". YES (Past error) >> Error was detected in the combination meter branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the AV control unit for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of AV control unit. Check the resistance between the AV control unit harness connector terminals. Models without navigation system RESISTANCE REFERENCE CHART AV control unit harness connector Resistance (ohms) Connector No. Terminal No. M156 86 87 Approx. 54 - 66 Models with navigation system RESISTANCE REFERENCE CHART AV control unit harness connector Resistance (ohms) Connector No. Terminal No. M163 62 46 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the AV control unit branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the AV control unit. Refer to the following. Models with BOSE audio with color display: " «AV CONTROL UNIT : DIAGNOSIS PROCEDURE»(ref-388076-S32277639982011022800000) " Models with BOSE audio with color display with navigation system: " «AV CONTROL UNIT : DIAGNOSIS PROCEDURE»(ref-388076-S36904085272011022800000) " Is the inspection result normal? YES (Present error) >> Replace the AV control unit. Refer to the following. Models with BOSE audio with color display: " «REMOVAL AND INSTALLATION»(ref-388076-S35974645152011022800000) " Models with BOSE audio with color display with navigation system: " «REMOVAL AND INSTALLATION»(ref-388076-S12949408612011022800000) " YES (Past error) >> Error was detected in the AV control unit branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the A/C auto amp. for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of A/C auto amp. Check the resistance between the A/C auto amp. harness connector terminals. RESISTANCE REFERENCE CHART A/C auto amp. harness connector Resistance (ohms) Connector No. Terminal No. M37 1 2 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the A/C auto amp. branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the A/C auto amp. Refer to the following. Models with color display: " «A/C AUTO AMP. : DIAGNOSIS PROCEDURE»(ref-388068-S24957458322011022800000) " Models with monochrome display: " «A/C AUTO AMP. : DIAGNOSIS PROCEDURE»(ref-388068-S02096636482011022800000) " Is the inspection result normal? YES (Present error) >> Replace the A/C auto amp. Refer to the following. Models with color display: " «REMOVAL AND INSTALLATION»(ref-388068-S00952203732011022800000) " Models monochrome display: " «REMOVAL AND INSTALLATION»(ref-388068-S25220165202011022800000) " YES (Past error) >> Error was detected in the A/C auto amp. branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of steering angle sensor. Check the resistance between the steering angle sensor harness connector terminals. RESISTANCE REFERENCE CHART Steering angle sensor harness connector Resistance (ohms) Connector No. Terminal No. M53 5 2 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the steering angle sensor branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the steering angle sensor. Refer to " «WIRING DIAGRAM»(ref-388064-S29113520302011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the steering angle sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-388064-S30163605812011022800000) ". YES (Past error) >> Error was detected in the steering angle sensor branch line. NO >> Repair the power supply and the ground circuit.
WARNINGBefore servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more. (To discharge backup capacitor.) Never use unspecified tester or other measuring device.
  1. CHECK CONNECTOR Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Replace the terminal and connector.
  2. CHECK AIR BAG DIAGNOSIS SENSOR UNIT Check the air bag diagnosis sensor unit. Refer to " «WORK FLOW»(ref-388079-S40192886802011022800000) ". Is the inspection result normal? YES >> Replace the main harness. NO >> Replace parts whose air bag system has a malfunction.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ABS actuator and electric unit (control unit). Check the resistance between the ABS actuator and electric unit (control unit) harness connector terminals. RESISTANCE REFERENCE CHART ABS actuator and electric unit (control unit) harness connector Resistance (ohms) Connector No. Terminal No. E26 26 15 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the ABS actuator and electric unit (control unit) branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to " «WIRING DIAGRAM»(ref-388064-S29113520302011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the ABS actuator and electric unit (control unit). Refer to " «EXPLODED VIEW»(ref-388064-S41758221492011022800000) ". YES (Past error) >> Error was detected in the ABS actuator and electric unit (control unit) branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). TCM Harness connector F1 Harness connector E3 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of TCM. Check the resistance between the TCM harness connector terminals. RESISTANCE REFERENCE CHART TCM harness connector Resistance (ohms) Connector No. Terminal No. F15 32 31 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the TCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the TCM. Refer to " «WIRING DIAGRAM»(ref-388054-S42131972772011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the TCM. Refer to " «EXPLODED VIEW»(ref-388054-S27009374622011022800000) ". YES (Past error) >> Error was detected in the TCM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of IPDM E/R. Check the resistance between the IPDM E/R harness connector terminals. RESISTANCE REFERENCE CHART IPDM E/R harness connector Resistance (ohms) Connector No. Terminal No. E17 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the IPDM E/R branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the IPDM E/R. Refer to " «DIAGNOSIS PROCEDURE»(ref-388055-S17162479042011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the IPDM E/R. Refer to " «REMOVAL AND INSTALLATION»(ref-388055-S00476911162011022800000) ". YES (Past error) >> Error was detected in the IPDM E/R branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CONNECTOR INSPECTION Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect all the unit connectors on CAN communication system. Check terminals and connectors for damage, bend and loose connection. Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector terminals. CONTINUITY REFERENCE CHART Data link connector Continuity Connector No. Terminal No. M22 6 14 Not existed Is the inspection result normal? YES >> GO TO 3. NO >> Check the harness and repair the root cause.
  3. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector and the ground. CONTINUITY REFERENCE CHART Data link connector Ground Continuity Connector No. Terminal No. M22 6 Not existed 14 Not existed Is the inspection result normal? YES >> GO TO 4. NO >> Check the harness and repair the root cause.
  4. CHECK ECM AND IPDM E/R TERMINATION CIRCUIT Remove the ECM and the IPDM E/R. Check the resistance between the ECM terminals. RESISTANCE REFERENCE CHART ECM Resistance (ohms) Terminal No. 98 97 Approx. 108 - 132 Check the resistance between the IPDM E/R terminals. RESISTANCE REFERENCE CHART IPDM E/R Resistance (ohms) Terminal No. 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 5. NO >> Replace the ECM and/or the IPDM E/R.
  5. CHECK SYMPTOM Connect all the connectors. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. Inspection result Reproduced >> GO TO 6. Non-reproduced >> Start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.
  6. CHECK UNIT REPRODUCTION Perform the reproduction test as per the following procedure for each unit. Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect one of the unit connectors of CAN communication system. NOTE: ECM and IPDM E/R have a termination circuit. Check other units first. Connect the battery cable to the negative terminal. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. NOTE: Although unit-related error symptoms occur, do not confuse them with other symptoms. Inspection result Reproduced >> Connect the connector. Check other units as per the above procedure. Non-reproduced >> Replace the unit whose connector was disconnected.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. ECM A/C auto amp. Check the continuity between the data link connector and the A/C auto amp. harness connector. CONTINUITY REFERENCE CHART Data link connector A/C auto amp. harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M22 6 M37 1 Existed 14 2 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the data link connector and the A/C auto amp. NO >> Repair the main line between the data link connector and the A/C auto amp.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector M1 Harness connector E30 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. A/C auto amp. Harness connectors M1 and E30 Check the continuity between the A/C auto amp. harness connector and the harness connector. CONTINUITY REFERENCE CHART A/C auto amp. harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M37 1 M1 15G Existed 2 8G Existed Is the inspection result normal? YES >> GO TO 3. NO >> Repair the main line between the A/C auto amp. and the harness connector M1.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the connector of ABS actuator and electric unit (control unit). Check the continuity between the harness connector and the ABS actuator and electric unit (control unit) harness connector. CONTINUITY REFERENCE CHART Harness connector ABS actuator and electric unit (control unit) harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E30 15G E26 26 Existed 8G 15 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the A/C auto amp. and the ABS actuator and electric unit (control unit). NO >> Repair the main line between the harness connector E30 and the ABS actuator and electric unit (control unit).

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). Models without automatic drive positioner ECM Harness connector E30 Harness connector M1 Models with automatic drive positioner ECM Harness connector E29 Harness connector B10 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ECM. Check the resistance between the ECM harness connector terminals. RESISTANCE REFERENCE CHART ECM harness connector Resistance (ohms) Connector No. Terminal No. E10 98 97 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the ECM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ECM. Refer to " «DIAGNOSIS PROCEDURE»(ref-388048-S17732725162011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the ECM. Refer to " «ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : DESCRIPTION»(ref-388048-S11114464122011022800000) ". YES (Past error) >> Error was detected in the ECM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of BCM. Check the resistance between the BCM harness connector terminals. RESISTANCE REFERENCE CHART BCM harness connector Resistance (ohms) Connector No. Terminal No. M19 79 78 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the BCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the BCM. Refer to " «DIAGNOSIS PROCEDURE»(ref-388072-S07430202432011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the BCM. Refer to " «REMOVAL AND INSTALLATION»(ref-388072-S03584481162011022800000) ". YES (Past error) >> Error was detected in the BCM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Check the resistance between the data link connector terminals. RESISTANCE REFERENCE CHART Data link connector Resistance (ohms) Connector No. Terminal No. M22 6 14 Approx. 54 - 66 Is the measurement value within the specification? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the data link connector branch line circuit. NO >> Repair the data link connector branch line.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of combination meter. Check the resistance between the combination meter harness connector terminals. RESISTANCE REFERENCE CHART Combination meter harness connector Resistance (ohms) Connector No. Terminal No. M24 21 22 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the combination meter branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the combination meter. Refer to " «COMBINATION METER : DIAGNOSIS PROCEDURE»(ref-388063-S24702165052011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the combination meter. Refer to " «REMOVAL AND INSTALLATION»(ref-388063-S27023497762011022800000) ". YES (Past error) >> Error was detected in the combination meter branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the A/C auto amp. for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of A/C auto amp. Check the resistance between the A/C auto amp. harness connector terminals. RESISTANCE REFERENCE CHART A/C auto amp. harness connector Resistance (ohms) Connector No. Terminal No. M37 1 2 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the A/C auto amp. branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the A/C auto amp. Refer to the following. Models with color display: " «A/C AUTO AMP. : DIAGNOSIS PROCEDURE»(ref-388068-S24957458322011022800000) " Models with monochrome display: " «A/C AUTO AMP. : DIAGNOSIS PROCEDURE»(ref-388068-S02096636482011022800000) " Is the inspection result normal? YES (Present error) >> Replace the A/C auto amp. Refer to the following. Models with color display: " «REMOVAL AND INSTALLATION»(ref-388068-S00952203732011022800000) " Models monochrome display: " «REMOVAL AND INSTALLATION»(ref-388068-S25220165202011022800000) " YES (Past error) >> Error was detected in the A/C auto amp. branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of steering angle sensor. Check the resistance between the steering angle sensor harness connector terminals. RESISTANCE REFERENCE CHART Steering angle sensor harness connector Resistance (ohms) Connector No. Terminal No. M53 5 2 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the steering angle sensor branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the steering angle sensor. Refer to " «WIRING DIAGRAM»(ref-388064-S29113520302011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the steering angle sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-388064-S30163605812011022800000) ". YES (Past error) >> Error was detected in the steering angle sensor branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ABS actuator and electric unit (control unit). Check the resistance between the ABS actuator and electric unit (control unit) harness connector terminals. RESISTANCE REFERENCE CHART ABS actuator and electric unit (control unit) harness connector Resistance (ohms) Connector No. Terminal No. E26 26 15 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the ABS actuator and electric unit (control unit) branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to " «WIRING DIAGRAM»(ref-388064-S29113520302011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the ABS actuator and electric unit (control unit). Refer to " «EXPLODED VIEW»(ref-388064-S41758221492011022800000) ". YES (Past error) >> Error was detected in the ABS actuator and electric unit (control unit) branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). TCM Harness connector F1 Harness connector E3 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of TCM. Check the resistance between the TCM harness connector terminals. RESISTANCE REFERENCE CHART TCM harness connector Resistance (ohms) Connector No. Terminal No. F15 32 31 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the TCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the TCM. Refer to " «WIRING DIAGRAM»(ref-388054-S42131972772011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the TCM. Refer to " «EXPLODED VIEW»(ref-388054-S27009374622011022800000) ". YES (Past error) >> Error was detected in the TCM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of IPDM E/R. Check the resistance between the IPDM E/R harness connector terminals. RESISTANCE REFERENCE CHART IPDM E/R harness connector Resistance (ohms) Connector No. Terminal No. E17 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the IPDM E/R branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the IPDM E/R. Refer to " «DIAGNOSIS PROCEDURE»(ref-388055-S17162479042011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the IPDM E/R. Refer to " «REMOVAL AND INSTALLATION»(ref-388055-S00476911162011022800000) ". YES (Past error) >> Error was detected in the IPDM E/R branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CONNECTOR INSPECTION Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect all the unit connectors on CAN communication system. Check terminals and connectors for damage, bend and loose connection. Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector terminals. CONTINUITY REFERENCE CHART Data link connector Continuity Connector No. Terminal No. M22 6 14 Not existed Is the inspection result normal? YES >> GO TO 3. NO >> Check the harness and repair the root cause.
  3. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector and the ground. CONTINUITY REFERENCE CHART Data link connector Ground Continuity Connector No. Terminal No. M22 6 Not existed 14 Not existed Is the inspection result normal? YES >> GO TO 4. NO >> Check the harness and repair the root cause.
  4. CHECK ECM AND IPDM E/R TERMINATION CIRCUIT Remove the ECM and the IPDM E/R. Check the resistance between the ECM terminals. RESISTANCE REFERENCE CHART ECM Resistance (ohms) Terminal No. 98 97 Approx. 108 - 132 Check the resistance between the IPDM E/R terminals. RESISTANCE REFERENCE CHART IPDM E/R Resistance (ohms) Terminal No. 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 5. NO >> Replace the ECM and/or the IPDM E/R.
  5. CHECK SYMPTOM Connect all the connectors. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. Inspection result Reproduced >> GO TO 6. Non-reproduced >> Start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.
  6. CHECK UNIT REPRODUCTION Perform the reproduction test as per the following procedure for each unit. Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect one of the unit connectors of CAN communication system. NOTE: ECM and IPDM E/R have a termination circuit. Check other units first. Connect the battery cable to the negative terminal. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. NOTE: Although unit-related error symptoms occur, do not confuse them with other symptoms. Inspection result Reproduced >> Connect the connector. Check other units as per the above procedure. Non-reproduced >> Replace the unit whose connector was disconnected.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector B1 Harness connector M6 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. Harness connectors B208 and B32 Harness connectors B1 and M6 Check the continuity between the harness connectors. CONTINUITY REFERENCE CHART Harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. B32 9 B1 15J Existed 10 16J Existed Is the inspection result normal? YES >> GO TO 3. NO >> Repair the main line between the harness connectors B32 and B1.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Check the continuity between the harness connector and the data link connector. CONTINUITY REFERENCE CHART Harness connector Data link connector Continuity Connector No. Terminal No. Connector No. Terminal No. M6 15J M22 6 Existed 16J 14 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the driver seat control unit and the data link connector. NO >> Repair the main line between the harness connector M6 and the data link connector.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. ECM A/C auto amp. Check the continuity between the data link connector and the A/C auto amp. harness connector. CONTINUITY REFERENCE CHART Data link connector A/C auto amp. harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M22 6 M37 1 Existed 14 2 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the data link connector and the A/C auto amp. NO >> Repair the main line between the data link connector and the A/C auto amp.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector M1 Harness connector E30 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. A/C auto amp. Harness connectors M1 and E30 Check the continuity between the A/C auto amp. harness connector and the harness connector. CONTINUITY REFERENCE CHART A/C auto amp. harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M37 1 M1 15G Existed 2 8G Existed Is the inspection result normal? YES >> GO TO 3. NO >> Repair the main line between the A/C auto amp. and the harness connector M1.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the connector of ABS actuator and electric unit (control unit). Check the continuity between the harness connector and the ABS actuator and electric unit (control unit) harness connector. CONTINUITY REFERENCE CHART Harness connector ABS actuator and electric unit (control unit) harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E30 15G E26 26 Existed 8G 15 Existed Is the inspection result normal? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the main line between the A/C auto amp. and the ABS actuator and electric unit (control unit). NO >> Repair the main line between the harness connector E30 and the ABS actuator and electric unit (control unit).

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). Models without automatic drive positioner ECM Harness connector E30 Harness connector M1 Models with automatic drive positioner ECM Harness connector E29 Harness connector B10 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ECM. Check the resistance between the ECM harness connector terminals. RESISTANCE REFERENCE CHART ECM harness connector Resistance (ohms) Connector No. Terminal No. E10 98 97 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the ECM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ECM. Refer to " «DIAGNOSIS PROCEDURE»(ref-388048-S17732725162011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the ECM. Refer to " «ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : DESCRIPTION»(ref-388048-S11114464122011022800000) ". YES (Past error) >> Error was detected in the ECM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). Driver seat control unit Harness connector B208 Harness connector B32 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of driver seat control unit. Check the resistance between the driver seat control unit harness connector terminals. RESISTANCE REFERENCE CHART Driver seat control unit harness connector Resistance (ohms) Connector No. Terminal No. B203 16 32 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the driver seat control unit branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the driver seat control unit. Refer to " «DRIVER SEAT CONTROL UNIT : DIAGNOSIS PROCEDURE»(ref-388077-S12269009592011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the driver seat control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-388077-S10702786732011022800000) ". YES (Past error) >> Error was detected in the driver seat control unit branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of BCM. Check the resistance between the BCM harness connector terminals. RESISTANCE REFERENCE CHART BCM harness connector Resistance (ohms) Connector No. Terminal No. M19 79 78 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the BCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the BCM. Refer to " «DIAGNOSIS PROCEDURE»(ref-388072-S07430202432011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the BCM. Refer to " «REMOVAL AND INSTALLATION»(ref-388072-S03584481162011022800000) ". YES (Past error) >> Error was detected in the BCM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Check the resistance between the data link connector terminals. RESISTANCE REFERENCE CHART Data link connector Resistance (ohms) Connector No. Terminal No. M22 6 14 Approx. 54 - 66 Is the measurement value within the specification? YES (Present error) >> Check CAN system type decision again. YES (Past error) >> Error was detected in the data link connector branch line circuit. NO >> Repair the data link connector branch line.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of combination meter. Check the resistance between the combination meter harness connector terminals. RESISTANCE REFERENCE CHART Combination meter harness connector Resistance (ohms) Connector No. Terminal No. M24 21 22 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the combination meter branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the combination meter. Refer to " «COMBINATION METER : DIAGNOSIS PROCEDURE»(ref-388063-S24702165052011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the combination meter. Refer to " «REMOVAL AND INSTALLATION»(ref-388063-S27023497762011022800000) ". YES (Past error) >> Error was detected in the combination meter branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the A/C auto amp. for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of A/C auto amp. Check the resistance between the A/C auto amp. harness connector terminals. RESISTANCE REFERENCE CHART A/C auto amp. harness connector Resistance (ohms) Connector No. Terminal No. M37 1 2 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the A/C auto amp. branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the A/C auto amp. Refer to the following. Models with color display: " «A/C AUTO AMP. : DIAGNOSIS PROCEDURE»(ref-388068-S24957458322011022800000) " Models with monochrome display: " «A/C AUTO AMP. : DIAGNOSIS PROCEDURE»(ref-388068-S02096636482011022800000) " Is the inspection result normal? YES (Present error) >> Replace the A/C auto amp. Refer to the following. Models with color display: " «REMOVAL AND INSTALLATION»(ref-388068-S00952203732011022800000) " Models monochrome display: " «REMOVAL AND INSTALLATION»(ref-388068-S25220165202011022800000) " YES (Past error) >> Error was detected in the A/C auto amp. branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of steering angle sensor. Check the resistance between the steering angle sensor harness connector terminals. RESISTANCE REFERENCE CHART Steering angle sensor harness connector Resistance (ohms) Connector No. Terminal No. M53 5 2 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the steering angle sensor branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the steering angle sensor. Refer to " «WIRING DIAGRAM»(ref-388064-S29113520302011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the steering angle sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-388064-S30163605812011022800000) ". YES (Past error) >> Error was detected in the steering angle sensor branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ABS actuator and electric unit (control unit). Check the resistance between the ABS actuator and electric unit (control unit) harness connector terminals. RESISTANCE REFERENCE CHART ABS actuator and electric unit (control unit) harness connector Resistance (ohms) Connector No. Terminal No. E26 26 15 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the ABS actuator and electric unit (control unit) branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to " «WIRING DIAGRAM»(ref-388064-S29113520302011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the ABS actuator and electric unit (control unit). Refer to " «EXPLODED VIEW»(ref-388064-S41758221492011022800000) ". YES (Past error) >> Error was detected in the ABS actuator and electric unit (control unit) branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). TCM Harness connector F1 Harness connector E3 Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of TCM. Check the resistance between the TCM harness connector terminals. RESISTANCE REFERENCE CHART TCM harness connector Resistance (ohms) Connector No. Terminal No. F15 32 31 Approx. 54 - 66 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the TCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the TCM. Refer to " «WIRING DIAGRAM»(ref-388054-S42131972772011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the TCM. Refer to " «EXPLODED VIEW»(ref-388054-S27009374622011022800000) ". YES (Past error) >> Error was detected in the TCM branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of IPDM E/R. Check the resistance between the IPDM E/R harness connector terminals. RESISTANCE REFERENCE CHART IPDM E/R harness connector Resistance (ohms) Connector No. Terminal No. E17 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the IPDM E/R branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the IPDM E/R. Refer to " «DIAGNOSIS PROCEDURE»(ref-388055-S17162479042011022800000) ". Is the inspection result normal? YES (Present error) >> Replace the IPDM E/R. Refer to " «REMOVAL AND INSTALLATION»(ref-388055-S00476911162011022800000) ". YES (Past error) >> Error was detected in the IPDM E/R branch line. NO >> Repair the power supply and the ground circuit.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CONNECTOR INSPECTION Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect all the unit connectors on CAN communication system. Check terminals and connectors for damage, bend and loose connection. Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector terminals. CONTINUITY REFERENCE CHART Data link connector Continuity Connector No. Terminal No. M22 6 14 Not existed Is the inspection result normal? YES >> GO TO 3. NO >> Check the harness and repair the root cause.
  3. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector and the ground. CONTINUITY REFERENCE CHART Data link connector Ground Continuity Connector No. Terminal No. M22 6 Not existed 14 Not existed Is the inspection result normal? YES >> GO TO 4. NO >> Check the harness and repair the root cause.
  4. CHECK ECM AND IPDM E/R TERMINATION CIRCUIT Remove the ECM and the IPDM E/R. Check the resistance between the ECM terminals. RESISTANCE REFERENCE CHART ECM Resistance (ohms) Terminal No. 98 97 Approx. 108 - 132 Check the resistance between the IPDM E/R terminals. RESISTANCE REFERENCE CHART IPDM E/R Resistance (ohms) Terminal No. 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES >> GO TO 5. NO >> Replace the ECM and/or the IPDM E/R.
  5. CHECK SYMPTOM Connect all the connectors. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. Inspection result Reproduced >> GO TO 6. Non-reproduced >> Start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.
  6. CHECK UNIT REPRODUCTION Perform the reproduction test as per the following procedure for each unit. Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect one of the unit connectors of CAN communication system. NOTE: ECM and IPDM E/R have a termination circuit. Check other units first. Connect the battery cable to the negative terminal. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. NOTE: Although unit-related error symptoms occur, do not confuse them with other symptoms. Inspection result Reproduced >> Connect the connector. Check other units as per the above procedure. Non-reproduced >> Replace the unit whose connector was disconnected.

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