TCM Power Supply and Ground Circuit Check
Precautions: Precautions for Diagnosing Trouble · Precautions for Disassembly and Reassembly · Precautions for Transmission / Transaxle · General safety (00)
Circuit Diagram
| [A]: | TCM connector (View: [a]) | B1: | TCM ground circuit 1 | 4. | “T/M4” fuse |
| A1: | TCM power supply circuit 3 | B2: | TCM ground circuit 2 | 5. | “IG1” fuse |
| A2: | TCM power supply circuit 2 | 1. | TCM | 6. | To ignition switch |
| A3: | TCM power supply circuit 1 | 2. | “T/M3” fuse | ||
| A4: | Ignition ON signal circuit | 3. | “T/M5” fuse |
Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
TCM power supply circuit check
1)With ignition “OFF”, disconnect “E495” connector from TCM.
2)Check for proper terminal connection to “E495” connector.
3)If connection is OK, check that voltage between each of “A1”, “A2” and “A3” circuits and ground is battery voltage.
Is check result OK?
|
Go to Step 2.
|
Repair or replace defective wire harness.
|
| 2 |
TCM ground circuit check
1)Set ignition “ON”.
2)Check that voltage between “A4” and ground is battery voltage.
Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
TCM ignition ON signal circuit check
1)Set ignition “OFF”.
2)Check that resistance between each of “B1” and “B2” circuit and ground is less than 1 Ω.
Is check result OK?
|
TCM power and ground circuit are in good condition.
|
Repair or replace defective wire harness.
|