Case 13 Infiniti G35 III

Case 13

Check IPDM E/R Ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 357

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Scheme 359

1. CHECK CONNECTOR Turn ignition switch OFF. Disconnect the negative battery terminal. Check following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector F102 Harness connector M72 OK or NG OK: GO TO 2. NG: Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect TCM connector and harness connector F102. Check continuity between TCM harness connector F103 terminals 6 (L), 7 (R) and harness connector F102 terminals 24H (L), 25H (R). 6 (L) - 24H (L): Continuity should exist. 7 (R) - 25H (R): Continuity should exist. OK or NG OK: GO TO 3. NG: Repair harness.
3. CHECK HARNESS FOR OPEN CIRCUIT Check continuity between harness connector M72 terminals 24H (L), 25H (R) and data link connector M8 terminals 6 (L), 14 (R). 24H (L) - 6 (L): Continuity should exist. 25H (R) - 14 (R): Continuity should exist. OK or NG OK: Reconnect all connectors to perform "SELECT SYSTEM", "SELF-DIAG RESULTS" and "DATA MONITOR (CAN DIAG SUPPORT MNTR)" displayed on CONSULT-II. Refer to «WORK FLOW»(ref-179471-S11078392912005070800000) . NG: Repair harness.

Scheme 360

Scheme 361

1. CHECK CONNECTOR Turn ignition switch OFF. Disconnect the negative battery terminal. Check following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector M15 Harness connector E108 OK or NG OK: GO TO 2. NG: Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect harness connector M15. Check continuity between data link connector M8 terminals 6 (L), 14 (R) and harness connector M15 terminals 58G (L), 59G (R). 6 (L) - 58G (L): Continuity should exist. 14 (R) - 59G (R): Continuity should exist. OK or NG OK: GO TO 3. NG: Repair harness.
3. CHECK HARNESS FOR OPEN CIRCUIT Disconnect VDC/TCS/ABS control unit connector. Check continuity between harness connector E108 terminals 58G (L), 59G (R) and VDC/TCS/ABS control unit harness connector E118 terminals 61 (L), 63 (R). 58G (L) - 61 (L): Continuity should exist. 59G (R) - 63 (R): Continuity should exist. OK or NG OK: Reconnect all connectors to perform "SELECT SYSTEM", "SELF-DIAG RESULTS" and "DATA MONITOR (CAN DIAG SUPPORT MNTR)" displayed on CONSULT-II. Refer to «WORK FLOW»(ref-179471-S11078392912005070800000) . NG: Repair harness.

Scheme 362

1. CHECK CONNECTOR Turn ignition switch OFF. Disconnect the negative battery terminal. Check terminals and connector of ECM for damage, bend and loose connection (control module side and harness side). OK or NG OK: GO TO 2. NG: Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect ECM connector. Check resistance between ECM harness connector F108 terminals 94 (L) and 86 (R). 94 (L) - 86 (R): Approx. 108 - 132ohm OK or NG OK: Replace ECM. NG: Repair harness between harness connector F102 and ECM.

Scheme 363

1. CHECK CONNECTOR Turn ignition switch OFF. Disconnect the negative battery terminal. Check terminals and connector of TCM for damage, bend and loose connection (control module side and harness side). OK or NG OK: GO TO 2. NG: Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect TCM connector. Check resistance between TCM harness connector F103 terminals 6 (L) and 7 (R). 6 (L) - 7 (R): Approx. 54 - 66ohm OK or NG OK: Replace TCM. NG: Repair harness between harness connector F102 and TCM.

Scheme 364

1. CHECK CONNECTOR Turn ignition switch OFF. Disconnect the negative battery terminal. Check the terminals and connector of data link connector for damage, bend and loose connection (connector-side and harness-side). OK or NG OK: GO TO 2. NG: Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M8 terminals 6 (L) and 14 (R). 6 (L) - 14 (R): Approx. 54 - 66ohm OK or NG OK: Perform "SELECT SYSTEM", "SELF-DIAG RESULTS" and "DATA MONITOR (CAN DIAG SUPPORT MNTR)" displayed on CONSULT-II. Refer to «WORK FLOW»(ref-179471-S11078392912005070800000) . NG: Repair harness between data link connector and combination meter.

Scheme 365

1. CHECK CONNECTOR Turn ignition switch OFF. Disconnect the negative battery terminal. Check terminals and connector of combination meter for damage, bend and loose connection (meter side and harness side). OK or NG OK: GO TO 2. NG: Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect combination meter connector. Check resistance between combination meter harness connector M20 terminals 28 (L) and 27 (R). 28 (L) - 27 (R): Approx. 54 - 66ohm OK or NG OK: Replace combination meter. NG: Repair harness between data link connector and combination meter.

Scheme 366

1. CHECK CONNECTOR Turn ignition switch OFF. Disconnect the negative battery terminal. Check terminals and connector of BCM for damage, bend and loose connection (control module side and harness side). OK or NG OK: GO TO 2. NG: Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect BCM connector. Check resistance between BCM harness connector M1 terminals 39 (L) and 40 (R). 39 (L) - 40 (R): Approx. 54 - 66ohm OK or NG OK: Replace BCM. Refer to «REMOVAL AND INSTALLATION OF BCM»(ref-169684-S07298031012004121500000) . NG: Repair harness between data link connector and BCM.

Scheme 367

1. CHECK CONNECTOR Turn ignition switch OFF. Disconnect the negative battery terminal. Check terminals and connector of steering angle sensor for damage, bend and loose connection (sensor side and harness side). OK or NG OK: GO TO 2. NG: Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect steering angle sensor connector. Check resistance between steering angle sensor harness connector M22 terminals 4 (L) and 5 (R). 4 (L) - 5 (R): Approx. 54 - 66ohm OK or NG OK: Replace steering angle sensor. NG: Repair harness between data link connector and steering angle sensor.

Scheme 368

1. CHECK CONNECTOR Turn ignition switch OFF. Disconnect the negative battery terminal. Check terminals and connector of VDC/TCS/ABS control unit for damage, bend and loose connection (control unit side and harness side). OK or NG OK: GO TO 2. NG: Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect VDC/TCS/ABS control unit connector. Check resistance between VDC/TCS/ABS control unit harness connector E118 terminals 61 (L) and 63 (R). 61 (L) - 63 (R): Approx. 54 - 66ohm OK or NG OK: Replace VDC/TCS/ABS control unit. NG: Repair harness between harness connector E108 and VDC/TCS/ABS control unit.

Scheme 369

1. CHECK CONNECTOR Turn ignition switch OFF. Disconnect the negative battery terminal. Check terminals and connector of IPDM E/R for damage, bend and loose connection (control module side and harness side). OK or NG OK: GO TO 2. NG: Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect IPDM E/R connector. Check resistance between IPDM E/R harness connector E9 terminals 48 (L) and 49 (R). 48 (L) - 49 (R): Approx. 108 - 132ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between harness connector E108 and IPDM E/R.

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1. CHECK CONNECTOR Turn ignition switch OFF. Disconnect the negative battery terminal. Check following terminals and connectors for damage, bend and loose connection (control module side, control unit side, meter side, sensor side and harness side). ECM TCM Combination meter BCM Steering angle sensor VDC/TCS/ABS control unit IPDM E/R Between ECM and IPDM E/R OK or NG OK: GO TO 2. NG: Repair terminal or connector.
2. CHECK HARNESS FOR SHORT CIRCUIT Disconnect following connectors. ECM connector TCM connector Harness connector F102 Check continuity between ECM harness connector F108 terminals 94 (L) and 86 (R). 94 (L) - 86 (R): Continuity should not exist. OK or NG OK: GO TO 3. NG: Check the following harnesses. If any harness is damaged, repair the harness. Harness between ECM and harness connector F102. Harness between TCM and harness connector F102.
3. CHECK HARNESS FOR SHORT CIRCUIT Check continuity between ECM harness connector F108 terminals 94 (L), 86 (R) and ground. 94 (L) - Ground: Continuity should not exist. 86 (R) - Ground: Continuity should not exist. OK or NG OK:> GO TO 4. NG: Check the following harnesses. If any harness is damaged, repair the harness. Harness between ECM and harness connector F102. Harness between TCM and harness connector F102.
4. CHECK HARNESS FOR SHORT CIRCUIT Disconnect following connectors. Combination meter connector BCM connector Steering angle sensor connector Harness connector M15 Check continuity between data link connector M8 terminals 6 (L) and 14 (R). 6 (L) - 14 (R): Continuity should not exist. OK or NG OK: GO TO 5. NG: Check the following harnesses. If any harness is damaged, repair the harness. Harness between harness connector M72 and harness connector M15. Harness between harness connector M72 and combination meter. Harness between harness connector M72 and data link connector. Harness between harness connector M72 and BCM. Harness between harness connector M72 and steering angle sensor.
5. CHECK HARNESS FOR SHORT CIRCUIT Check continuity between data link connector M8 terminals 6 (L), 14 (R) and ground. 6 (L) - Ground: Continuity should not exist. 14 (R) - Ground: Continuity should not exist. OK or NG OK: GO TO 6. NG: Check the following harnesses. If any harness is damaged, repair the harness. Harness between harness connector M72 and harness connector M15. Harness between harness connector M72 and combination meter. Harness between harness connector M72 and data link connector. Harness between harness connector M72 and BCM. Harness between harness connector M72 and steering angle sensor.
6. CHECK HARNESS FOR SHORT CIRCUIT Disconnect VDC/TCS/ABS control unit connector and IPDM E/R connector. Check continuity between IPDM E/R harness connector E9 terminals 48 (L) and 49 (R). 48 (L) - 49 (R): Continuity should not exist. OK or NG OK: GO TO 7. NG: Repair harness between harness connector E108 and VDC/TCS/ABS control unit. Repair harness between harness connector E108 and IPDM E/R.
7. CHECK HARNESS FOR SHORT CIRCUIT Check continuity between IPDM E/R harness connector E9 terminals 48 (L), 49 (R) and ground. 48 (L) - Ground: Continuity should not exist. 49 (R) - Ground: Continuity should not exist. OK or NG OK: GO TO 8. NG: Check the following harnesses. If any harness is damaged, repair the harness. Harness between harness connector E108 and VDC/TCS/ABS control unit. Harness between harness connector E108 and IPDM E/R.
8. ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION Check components inspection. Refer to «ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION»(ref-179471-S00757084752005070800000) . OK or NG OK: Reconnect all connectors to perform "SELECT SYSTEM", "SELF-DIAG RESULTS" and "DATA MONITOR (CAN DIAG SUPPORT MNTR)" displayed on CONSULT-II. Refer to «WORK FLOW»(ref-179471-S11078392912005070800000) . NG: Replace ECM and/or IPDM E/R.

Check the following. If no problem is found, replace the IPDM E/R.

1. IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-179472-S04938748392005070800000) .
2. Ignition power supply circuit. .

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Scheme 377

1. Remove ECM and IPDM E/R from vehicle.
2. Check resistance between ECM terminals 94 and 86.
3. Check resistance between IPDM E/R terminals 48 and 49.