Open-Circuit

Checking Lock-up Solenoid SL
- Ignition ON.
- Move gear selector to position P.
- Activate solenoid SL. Read off the solenoid status. The status should alternate between OFF/ON.
- Does the status alternate between OFF/ON?

Yes:
- Proceed to: Intermittent Fault section below.

No:
- Proceed to: Checking Power Ground section below.





Checking Power Ground
- Ignition OFF.
- Connect the test box and check ground terminals. Check the power ground carefully.
- Are the ground terminals OK?

Yes:
- Proceed to: Checking Resistance In Solenoid SL Circuit section below.

No:
- Proceed to: Fault-tracing Information section below.

Fault-tracing Information
- The diagnostic trouble code (DTC) has been caused by a poor power ground.
- Proceed to: Verification section below.





Checking Resistance In Solenoid SL Circuit
- Ignition OFF.
- Engine control module (ECM) disconnected.
- Connect an ohmmeter between # 2 and # 1 on test box.
- The ohmmeter should read 12-18 Ohms.

It reading is OK:
- Proceed to: Checking The Transmission Control Module section below.

If reading is incorrect:
- Proceed to: Checking Signal Cable section below.





Checking The Transmission Control Module
- Ignition OFF.
- Reconnect connectors, reinstall components etc.
- Ignition ON.
- Move gear selector to position P.
- Activate solenoid SL. Read off the solenoid status. The status should alternate between OFF/ON.
- Does the status alternate between OFF/ON?

Yes:
- Proceed to: Checking For Contact Resistance And Oxidation section below.

No:
- Proceed to: Replacing Component section below.





Checking For Contact Resistance And Oxidation
- Ignition OFF.
- The diagnostic trouble code was caused by loose connections in the transmission control module (TCM) connector. Check connector for contact resistance and oxidation and remedy.
- Proceed to: Verification section below.





Replacing Component
- Try a new transmission control module.
- Proceed to: Verification section below.





Checking Signal Cable
- Ignition OFF.
- Raise the car to access the transmission connector.
- Carefully clean round connector.
- Disconnect transmission connector D.
- Connect an ohmmeter between transmission connector terminal 3 (transmission control module side) and # 2 on the test box.
- The ohmmeter should read approx. 0 Ohms.

It reading is OK:
- Proceed to: Checking Solenoid SL Circuit In The Transmission section below.

It reading is Incorrect:
- Proceed to: Checking For An Open-circuit section below.





Checking For An Open-circuit
- Check cable between transmission connector D terminal 3 and transmission control module # 2 for an open-circuit.
- Proceed to: Verification section below.





Checking Solenoid SL Circuit In The Transmission
- Ignition OFF.
- Transmission connector D disconnected.
- Connect an ohmmeter between transmission connector D terminal 3 (transmission side) and transmission housing.
- The ohmmeter should read 12-18 Ohms.

If reading is OK:
- Proceed to: Checking For Contact Resistance And Oxidation section below.

If reading is incorrect:
- Proceed to: Checking Resistance In Solenoid SL section below.





Checking For Contact Resistance And Oxidation
- Ignition OFF.
- The diagnostic trouble code was caused by loose connections in the transmission connector. Check transmission and transmission control module connectors for contact resistance and oxidation and remedy.
- Proceed to: Verification section below.





Checking Resistance In Solenoid SL
- Ignition OFF.
- Open the control system.
- Disconnect solenoid SL.
- Connect an ohmmeter between the pin on solenoid SL and the transmission housing (ground terminal).
- The ohmmeter should read 12-18 Ohms.

If reading is OK:
- Proceed to: Checking For An Open-circuit section below.

If reading is incorrect:
- Proceed to: Replacing Component section below.





Checking For An Open-circuit
- Ignition OFF.
- Check cable between the solenoid SL and transmission connector D terminal 3 for an open-circuit.
- Proceed to: Verification section below.





Replacing Component
- Ignition OFF.
- Try a new solenoid SL.
- Proceed to: Verification section below.





Verification
After repairs have been completed they must be verified as follows to ensure that the fault has been eliminated:

- Ignition OFF.
- Reconnect the connectors, reinstall components etc,
- Ignition ON.
- Move gear selector to position P.

- Activate solenoid SL. Read off the solenoid status. The status should alternate between OFF/ON.
- Does the status alternate between OFF/ON??

Yes:
- Fault corrected.

No:
- Proceed to: Fault-tracing Information section below.

Fault-tracing Information
The verification result shows that the fault persists.

- Do you want to exit fault-tracing?

Yes:
- Fault not corrected.

No:
- Proceed to: Checking Lock-up Solenoid SL section above.





Intermittent Fault
- Ignition OFF.
- Check transmission and transmission control module connectors for loose connections and contact resistance and oxidation.
- Check cable between solenoid SL in the transmission and transmission control module # 2 for an intermittent open-circuit.
- Check cable between ground terminal 31/66 and transmission control module # 1 for an intermittent open-circuit.
- Check ground terminal 31/66 for contact resistance and oxidation.
- Proceed to: Fault-tracing Information section below.

Fault-tracing Information
For intermittent faults fault-tracing is not followed by a verification because the fault is not present at this moment.

- Do you want to repeat fault-tracing?

Yes:
- Proceed to: Checking Lock-up Solenoid SL section above.

No:
- Operation done.