Diagnosis Procedure

MAIN POWER SUPPLY AND GROUND CIRCUIT


Diagnosis Procedure

1.CHECK TCM POWER SOURCE
1. Turn ignition switch OFF.
2. Disconnect A/T assembly connector.
3. Turn ignition switch ON.
4. Check voltage between A/T assembly vehicle side harness connector terminals and ground.





Is the inspection result normal?
YES - GO TO 2.
NO - Check the following. If NG, repair or replace damaged parts.
- Harness for short or open between battery and A/T assembly vehicle side harness connector terminal 2.
- Harness for short or open between push-button ignition switch and IPDM E/R.
- Harness for short or open between IPDM E/R vehicle side harness connector terminal 26 and A/T assembly vehicle side harness connector terminal 1, 6.
- 10A fuse (No. 34, located in the fuse, fusible link and relay box)
- 10A fuse (No. 83, located in the IPDM E/R)
- Push-button ignition switch. Refer to Power.
2.CHECK TCM GROUND CIRCUIT
Check continuity between A/T assembly vehicle side harness connector terminals and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check the following.
- Check terminals of A/T assembly connector for damage.
- Check connector for loose connection.
Is the inspection result normal?
YES - INSPECTION END
NO - Repair or replace damaged parts.