TCM Power and Ground Circuit Check: Troubleshooting
WARNING: This page is about a different variant/trim than selected.
TROUBLESHOOTING TABLE
| Step |
Action |
YES |
NO |
| 1 |
Check TCM back-up power supply circuit
- Disconnect connectors from TCM with ignition switch turned OFF.
- Check for proper connection to "C06-6" and "C06-24" terminals of TCM connector.
- If OK, measure voltage between "C06-24" terminal of disconnected TCM connector and ground.
Is voltage 10 - 14 V? |
Go to Step 2. |
"WHT/RED" circuit is open or shorted to ground. |
| 2 |
Check TCM power supply circuit
- Turn ignition switch to ON position.
- Measure voltage between "C06-6" terminal of disconnected TCM connector and ground.
Is voltage 10 - 14 V? |
Go to Step 5. |
Go to Step 3. |
| 3 |
Check A/T relay
- Turn ignition switch to OFF position.
- Remove A/T relay.
- Check A/T relay for operation by referring to A/T RELAY INSPECTION .
Is it in good condition? |
Go to Step 4. |
Replace A/T relay. |
| 4 |
Check TCM power supply circuit
- Turn ignition switch to ON position.
- Measure voltage between "YEL/BLU" and "LT GRN/BLK" terminals of A/T relay connector and ground.
Is each voltage 10 - 14 V? |
Go to Step 5. |
"YEL/BLU" and/or "LT GRN/BLK" circuit are open or shorted to ground. |
| 5 |
Check TCM ground circuit
- Turn ignition switch to OFF position.
- Check for proper connection to "C06-1" and "C06-23" terminals of TCM connector.
- Measure resistance as follows.
- Between "C06-1" terminal of TCM connector and vehicle body ground.
- Between "C06-23" terminal of TCM connector and vehicle body ground.
Is each resistance 1 Ω or less? |
Substitute a known-good TCM and recheck. |
"BLK" circuit is open. |