Cause of Failure
WARNING: This page is about a different variant/trim than selected.
- The wiring harness or the connector between the engine control module (ECM) and the TCM
- The ECM
- The TCM
DTC P1702 (Non Europe or N. American Emissions)
| Step |
Action |
Values |
Yes |
No |
| 1 |
Did you perform the Diagnostic System Check - Automatic Transmission? |
- |
Go to Step 2 |
Go to Diagnostic System Check - Automatic Transmission |
| 2 |
- Turn OFF the ignition.
- Install the scan tool.
- With the engine OFF, turn the ignition switch to the ON position.
- Select Store Freeze Frame/Failure Records from the DTC Information menu.
- Store Freeze Frame/Failure Records.
- Select Clear DTC Information from the DTC Information menu.
- Clear the DTC information.
- Perform one vehicle drive cycle.
Is the hold lamp ON? |
- |
Go to Step 3 |
Go to Step 7 |
| 3 |
- Select Request DTC by Status from the DTC Information menu.
- Request DTC by Status.
Is DTC P1702 displayed? |
- |
Go to Step 4 |
Go to Step 7 |
| 4 |
- Turn OFF the ignition.
- Disconnect the transmission control module (TCM) wiring connector and the engine control module (ECM) wiring connector.
- Measure the resistance between terminal A17 of the TCM wiring connector and terminal K14, or B14, or 88 of the ECM wiring connector.
- Measure the resistance between terminal A7 of the TCM wiring connector and terminal K15, or B30, or 57 of the ECM wiring connector.
Is the resistance within the specified value? |
0 Ω |
Go to Step 5 |
Go to Step 6 |
| 5 |
- Turn ON the ignition.
- Measure the voltage of terminal A17.
- Measure the voltage of terminal A7.
Is the voltage within the specified range? |
11-14 V |
Go to Step 6 |
Go to Step 8 |
| 6 |
Repair the malfunctioning terminals, as necessary.
Did you complete the repair? |
- |
System OK |
- |
| 7 |
Repair the temporary connection failure of the connector. Refer to Transmission Control Module (TCM) Replacement
.
Did you complete the repair? |
- |
System OK |
- |
| 8 |
Inspect the engine for proper operation.
Was a condition found? |
- |
- |
Go to Step 9 |
| 9 |
- Replace the TCM. Refer to Transmission Control Module (TCM) Replacement
.
- Turn OFF the ignition.
- Turn ON the ignition.
- Inspect if DTC P1702 is set.
Is the DTC set? |
- |
Go to Step 10 |
Go to Step 11 |
| 10 |
Replace the ECM..
Did you complete the replacement? |
- |
Go to Step 11 |
- |
| 11 |
- After the repair, use a scan tool Clear Info function and road test the vehicle.
- Review the DTC info.
Has the last test failed or is the current DTC displayed? |
- |
Go to Step 2 |
System OK |