• | The system voltage is too low. |
• | The transmission control module (TCM) detects that voltage is less than 9 volts for 0.5 seconds continuously. |
• | The engine revolution is 600 RPM or greater. |
The TCM will request the illumination of the hold lamp and store the DTC when the TCM detects failures on 2 consecutive ignition cycles.
• | The TCM turns off the hold lamp when no further failure is detected on the next ignition cycles. |
• | The scan tool can clear the DTC from the TCM history. |
• | The TCM clears the DTC from the TCM history memory after 40 consecutive ignition cycles without fault. |
• | TCM wiring harness and connectors |
• | Battery |
• | TCM |
Step | Action | Values | Yes | No |
---|---|---|---|---|
1 |
Is the voltage within the specified range? | 9-16 V | Go to Step 4 | Go to Step 2 |
2 |
Is the voltage within the specified range? | 9-16 V | Go to Step 4 | Go to Step 3 |
3 | Replace the battery. Did you complete the replacement? | -- | System OK | -- |
4 |
Is the voltage within the specified range? | 9-16 V | Go to Step 6 | Go to Step 5 |
5 |
Did you complete the action? | -- | System OK | -- |
6 | Test the EF1, F2 fuse for an open. Was a problem found? | -- | Go to Step 7 | Go to Step 8 |
7 |
Did you complete the replacement? | -- | System OK | -- |
8 |
Is the voltage within the specified range? | 9-16 V | Go to Step 10 | Go to Step 9 |
9 | Repair the fuse voltage supply lines for open. Did you complete the repair? | -- | System OK | -- |
10 |
Is the resistance equal to the specified value? | 0 ohms | Go to Step 12 | Go to Step 11 |
11 | Repair the circuit between EF1 and terminal A24 for short to ground and open. Did you complete the repair? | -- | System OK | -- |
12 |
Is the voltage within the specified range? | 9-16 V | Go to Step 13 | Go to Step 14 |
13 | Repair the circuit from EF1 to terminal A24 of the TCM for short to battery. Did you complete the repair? | -- | System OK | -- |
14 |
Is the resistance equal to the specified value? | 0 ohms | Go to Step 16 | Go to Step 15 |
15 | Repair the circuit between F2 and terminal A6 for short to ground and open. Did you complete the repair? | -- | System OK | -- |
16 |
Is the voltage within the specified range? | 9-16 V | Go to Step 17 | Go to Step 18 |
17 | Repair the circuit between F2 and terminal A6 for short to battery. Did you complete the repair? | -- | System OK | -- |
18 |
Was a condition found? | -- | Go to Step 20 | Go to Step 19 |
19 | Replace the TCM. Refer to Transmission Control Module Replacement Did you complete the replacement? | -- | Go to Step 20 | -- |
20 |
Has the last test failed or is the current DTC displayed? | -- | Go to Step 1 | System OK |
• | The system voltage is too low. |
• | The transmission control module (TCM) detects that voltage is less than 9 volts for 0.5 seconds continuously. |
• | The engine revolution is 600 RPM or greater. |
The TCM will request the illumination of the MIL lamp and store the DTC when the TCM detects failures on 2 consecutive ignition cycles.
• | The TCM turns off the MIL lamp when no further failure is detected on the next ignition cycles. |
• | The scan tool can clear the DTC from the TCM history. |
• | The TCM clears the DTC from the TCM history memory after 40 consecutive ignition cycles without fault. |
• | TCM wiring harness and connectors |
• | Battery |
• | TCM |
Step | Action | Values | Yes | No |
---|---|---|---|---|
1 |
Is the voltage within the specified range? | 9-16 V | Go to Step 4 | Go to Step 2 |
2 |
Is the voltage within the specified range? | 9-16 V | Go to Step 4 | Go to Step 3 |
3 | Replace the battery. Did you complete the replacement? | -- | System OK | -- |
4 |
Is the voltage within the specified range? | 9-16 V | Go to Step 6 | Go to Step 5 |
5 |
Did you complete the action? | -- | System OK | -- |
6 | Test the EF1, F2 fuse for an open. Was a problem found? | -- | Go to Step 7 | Go to Step 8 |
7 |
Did you complete the replacement? | -- | System OK | -- |
8 |
Is the voltage within the specified range? | 9-16 V | Go to Step 10 | Go to Step 9 |
9 | Repair the fuse voltage supply lines for open. Did you complete the repair? | -- | System OK | -- |
10 |
Is the resistance equal to the specified value? | 0 ohms | Go to Step 12 | Go to Step 11 |
11 | Repair the circuit between EF1 and terminal A24 for short to ground and open. Did you complete the repair? | -- | System OK | -- |
12 |
Is the voltage within the specified range? | 9-16 V | Go to Step 13 | Go to Step 14 |
13 | Repair the circuit from EF1 to terminal A24 of the TCM for short to battery. Did you complete the repair? | -- | System OK | -- |
14 |
Is the resistance equal to the specified value? | 0 ohms | Go to Step 16 | Go to Step 15 |
15 | Repair the circuit between F2 and terminal A6 for short to ground and open. Did you complete the repair? | -- | System OK | -- |
16 |
Is the voltage within the specified range? | 9-16 V | Go to Step 17 | Go to Step 18 |
17 | Repair the circuit between F2 and terminal A6 for short to battery. Did you complete the repair? | -- | System OK | -- |
18 |
Was a condition found? | -- | Go to Step 20 | Go to Step 19 |
19 | Replace the TCM. Refer to Transmission Control Module Replacement Did you complete the replacement? | -- | Go to Step 20 | -- |
20 |
Has the last test failed or is the current DTC displayed? | -- | Go to Step 1 | System OK |