Checking the Park / Neutral Position (PNP) Switch
Checking the park / neutral position (PNP) switch
Reading off diagnostic trouble codes (DTCs)
Hint: If the starter motor does not run, the fault may be due to an internal fault in the gear-shift position sensor. In certain cases the transmission control module (TCM) has been unable to store diagnostic trouble codes (DTCs) because not all the conditions have been met.
- Ignition on or ignition switch position III for at least five seconds
- Read off diagnostic trouble codes (DTCs).
Fault trace any stored diagnostic trouble codes (DTCs) before beginning this fault-tracing. Use the VIDA symptom input and select the same symptom as for this fault-tracing.
Were diagnostic trouble codes (DTCs) stored in the transmission control module (TCM)?
Yes - DONE
No - Checking the park / neutral position (PNP) switch
-------------------------------------------------
Checking the park / neutral position (PNP) switch
- Ignition off
- Move the gear selector to position D
- Try to start the car. It should not be possible to start the car
- Ignition off
- Move the gear selector to position P or N.
Try to start the car. It should now be possible to start the car.
Was the function OK?
Yes - No Fault Found
No - Checking the wiring and component
-------------------------------------------------
Checking the wiring and component
Check the cable between transmission connector terminal #44 (#A44) and central electronic module (CEM) terminal #D9 (#B9). Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
If no faults are found in the wiring, try a new control module according to Transmission control module (TCM), replacing, B5254T2, AW50/51 AWD, B5254T2, AW55-50/51SN Service and Repair.
Other information
- To connect the breakout box to the transmission control module (TCM), see Connecting the breakout box, B5254T2 Connecting the Test Box
- To connect the breakout box to the central electronic module (CEM), see Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM).
Were any faults found in the cable?
Yes - Verification
No - Fault-tracing information
-------------------------------------------------
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off
- Gear-shift position sensor in position D
- Try to start the engine. It should not now be possible to start the engine
- Ignition off
- Gear-shift position sensor in position P or N.
Try to start the engine. It should now be possible to start the engine.
Was the function OK?
Yes - FAULT FOUND
No - Fault-tracing information
-------------------------------------------------
Fault-tracing information
Information
Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.
Do you want to exit fault-tracing?
Yes - Exit Fault-Tracing
No - Attempt New Test
------------------------
Attempt New Test - Reading off diagnostic trouble codes (DTCs)
-------------------------------------------------