With Scan Tool
1. Select The SystemSelect the type of engine management system the car is fitted with
MOTRONIC
Go to step 2
TRIONIC
Go to step 5
2. Checking The Signal Lead
Turn the ignition switch to the ON position.
Contact MOTRONIC.
Test value - Drive
Move the selector lever from P or N to another gear position. Once the selector lever has been moved. the reading should be ON
Is the function correct?
NO
Go to step 3
YES
Go to step 4
3. Rectifying The Lead
Repair or replace the lead between pin 10 of the transmission control module and pin 47 of the Motronic control module.
When repair is complete
Go to step 8
4. Changing Components
Change Idle air control valve
When repair is complete
Go to step 8
5. Checking The Signal Lead
Turn the ignition switch to the ON position.
Contact Control module, TRIONIC.
Test value - Drive
Move the selector lever from P or N to another gear position. Once the selector lever has been moved, the reading should be ON
Is the function correct?
NO
Go to step 6
YES
Go to step 7
6. Rectifying The Lead
Repair or replace the lead between pin 10 of the transmission control module and pin 14 of the TRIONIC control module.
When repair is complete
Go to step 8
7. Changing Components
Change Idle air control valve
When repair is complete
Go to step 8
8. Final Check
Clear the diagnostic trouble codes in all systems.
Carry out a functionality test.
Is the function correct?
NO
Go to step 10
YES
Go to step 9
9. Final Check
Diagnosis is complete
The steps taken to rectify the fault were correct.
10. Final Check
Diagnostic procedure for this symptom is complete
Refer to Transmission Control Systems, Testing and Inspection, Procedures for Before Changing A Control Module.