Main Power Supply And Ground Circuit

MAIN POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure


1. CHECK TCM POWER CIRCUIT (PART 1)

1.Turn ignition switch OFF.
2.Disconnect TCM connector.
3.Check voltage between TCM harness connector terminals and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- GO TO 4.

2. CHECK TCM POWER CIRCUIT (PART 2)

Check voltage between TCM harness connector terminals and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- GO TO 5.

3. CHECK TCM GROUND CIRCUIT

Check continuity between TCM harness connector terminals and ground.





Is the inspection result normal?
YES- Check intermittent incident. Intermittent Incident.
NO- Repair or replace malfunctioning parts.

4. DETECT MALFUNCTION ITEMS (PART 1)

Check the following items:
- Open or short circuit of harness between battery positive terminal and TCM connectors terminals 45 and 46.
- 10A fuse (No.33, fuse and fusible link block). Fuse, Fusible Link And Relay Box.
Is the inspection result normal?
YES - Check intermittent incident. Intermittent Incident.
NO- Repair or replace malfunctioning parts.

5. CHECK CIRCUIT BETWEEN IPDM E/R AND TCM (PART 1)

1.Turn ignition switch OFF.
2.Disconnect IPDM E/R connector.
3.Check continuity between IPDM E/R harness connector terminal and TCM harness connector terminals.





Is the check result normal?
YES- GO TO 6.
NO- Repair or replace malfunctioning parts.

6. CHECK CIRCUIT BETWEEN IPDM E/R AND TCM (PART 2)

Check continuity between IPDM E/R harness connector terminal and ground.





Is the check result normal?
YES- GO TO 7.
NO- Repair or replace malfunctioning parts.

7. DETECT MALFUNCTIONING ITEMS (PART 2)

Check the following items:
- Harness open circuit or short circuit between ignition switch and IPDM E/R. Ignition Power Supply.
- 10A fuse (No.49, IPDM E/R). IPDM E/R Terminal Arrangement.
- IPDM E/R
Is the check result normal?
YES- Check intermittent incident. Intermittent Incident.
NO- Repair or replace malfunctioning parts.