Diagnostic Procedures

1. Checking Control Module Output To The Lock-Up Solenoid





Unplug the connector H16-3

2. Checking Control Module Output To The Lock-Up Solenoid

Part 1 Of 2:

Part 2 Of 2:

Connect test lamp 86 11 857 between pin 10 of the connector to the control module and a good grounding point.





Turn the ignition switch to the ON position.

3. Checking Control Module Output To The Lock-Up Solenoid





Contact TCM.

Activate Solenoid Lock Up (SL) (ON)





The test lamp should light.

Is the function correct?

NO
Go to step 4

YES
Go to step 5

4. Rectifying The Lead

Repair or replace the lead between pin 2 of the control module and pin 10 of the connector.

When repair is complete
Go to step 13

5. Checking The Wiring Harness

Check to see whether there is external damage to the wiring harness from H16-3 to the bushing in to the gear box.

Are the leads free from faults?

NO
Go to step 6

YES
Go to step 7

6. Rectifying The Lead

Repair the damage.

When repair is complete
Go to step 13

7. Checking The Lead





Plug in the connector H16-3

Go to step 8

8. Checking The Lead

Remove the cover to the valve body, refer to Automatic Transmission/Transaxle, Transmission Pan





Unplug the connector for Solenoid valve, LOCK UP (531 (SL))

Go to step 9

9. Checking The Lead









Connect test lamp 86 11 857 to pin 5 of the female connector and a good grounding point.





Turn the ignition switch to the ON position.

Go to step 10

10. Checking The Lead





Contact TCM.

Activate, Solenoid Lock Up (SL) (ON)





The test lamp should light.

Is the function correct?

NO
Go to step 11

YES
Go to step 12

11. Rectifying The Lead

Repair or replace the lead between pin 5 of the female connector and pin 10 of the connector.

Go to step 13

12. Changing Components





Change Solenoid valves, TCM

After repair is complete
Go to step 13

13. Final Check





Clear the diagnostic trouble codes in all systems.

Carry out a drive cycle:
Drive the car at varying engine loads and engine rpm for five minutes.

Evaluate the drive cycle.





Check that the diagnostic trouble code has not recurred

Is the function correct?

NO
Go to step

YES
Go to step

14. Final Check

Diagnosis of this fault code is complete.
Refer to Procedures, Before Changing A Control Module..

15. Final Check

The steps taken to rectify the fault were correct.
Diagnosis is complete