DTC Troubleshooting
TEST PROCEDURE - TRANSAXLE FLUID TEMPERATURE SENSOR CIRCUIT RANGE / PERFORMANCE
| Step |
Action |
Value(s) |
Yes |
No |
| 1 |
Perform an On-Board Diagnostic (OBD II) System Check. Is the check completed? |
- |
Go to Step 2 |
Go to ON-BOARD DIAGNOSTIC (OBD II) SYSTEM CHECK
. |
| 2 |
- Install the scan tool.
- Turn the ignition ON, with the engine OFF.
- Record then clear DTC(s) and turn the ignition OFF, then turn the ignition ON.
- Select TFT on the scan tool.
- Drive the vehicle and observe the scan tool for either of the flowing conditions:
- The TFT does not change more than 1.5 °C (2.7 °F) in 80 seconds since start-up.
- The TFT changes more than 20 °C (36 °F) within 7 seconds (unrealistic change).
Did either of the fail conditions occur? |
- |
Go to Step 3 |
Go to Diagnostic Aids . |
| 3 |
- Turn the ignition OFF.
- Disconnect the transaxle wiring connector.
- Measure the resistance between terminals 9 and 4 of the transaxle wiring connector.
Is the resistance within the values shown? |
TFT 25 °C (77 °F) 990 Ω |
Go to Step 7 |
Go to Step 4 |
| 4 |
- Remove the oil pan.
- Disconnect the wiring connector of the transaxle fluid temperature sensor.
- Inspect the automatic transaxle wiring harness for an intermittent short or open.
Was a problem found? |
- |
Go to Step 5 |
Go to Step 6 |
| 5 |
Replace the automatic transaxle wiring harness. Is the replacement complete? |
- |
System OK |
- |
| 6 |
Replace the TFT sensor. Is the action complete? |
- |
System OK |
- |
| 7 |
- Disconnect the automatic transaxle wiring connector and disconnect the wiring connector of the TCM (transaxle control module).
- Measure the resistance between terminal 4 of the transaxle wiring connector and terminal B1 of the TCM wiring connector.
- Measure the resistance between terminal 9 of the transaxle wiring connector and terminal A4 of the TCM wiring connector.
Is the resistance within the values shown? |
≈ 0 Ω |
Go to Step 9 |
Go to Step 8 |
| 8 |
- Inspect the automatic transaxle wiring harness for an intermittent short to ground or open condition.
- Inspect the automatic TFT sensor wiring harness for an intermittent short to ground or open condition.
- Repair the circuits if necessary.
Is the repair complete? |
- |
System OK |
- |
| 9 |
- Turn the ignition ON.
- Measure the voltage of terminal A4 of the TCM wiring connector.
- Measure the voltage of terminal B1 of the TCM wiring connector.
Is the voltage within the values shown? |
9 - 16 V |
Go to Step 10 |
Go to Step 11 |
| 10 |
- Inspect the automatic transaxle wiring harness for an intermittent short to power.
- Inspect the automatic TFT sensor wiring harness for an intermittent short to power.
- Repair the circuits if necessary.
Is the repair complete? |
- |
System OK |
- |
| 11 |
Replace the TCM. Is the replacement complete? |
- |
Go to Step 12 |
- |
| 12 |
- 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? |
- |
Begin diagnosis again. |
Repair verified exit DTC chart. |