800A PCM2 - gateway: Diagnosis/troubleshooting
DIAGNOSIS/TROUBLESHOOTING - 800A PCM2 - GATEWAY
| Work instruction |
Display OK |
If not OK |
| 1 |
Read out PCM2 fault memory |
- Connect the Porsche System Tester II 9588 to the diagnostic socket, start it and switch on the ignition.
- Select Boxster in the Vehicle type menu and confirm with the ">>" key.
- Select PCM in the control modules selection and confirm with the ">>" key.
- Select PCM2 GW in the PCM2 function selection and confirm with the ">>" key.
- Select Fault memory in the PCM2 GW function selection and confirm with the ">>" key.
- Read out fault memory.
- Erase fault memory.
- Remove ignition key and switch on ignition again.
- Read out fault memory.
- Extract ambient data, press the ">>" key.
|
-> End |
Fault code is still displayed
Step 2 |
| 2 |
Check CAN comfort (high) for open circuit |
- Switch off ignition.
- Pull off plug C on the PCM2 control module.
- Pull off plug B on the air-conditioning system control module.
- Pull off plug A on the instrument cluster control module.
- Measure specific resistance between pin 1 of plug C on the PCM2 control module and pin 1 of plug B on the air-conditioning control module.
|
< 0.5
Step 3 |
Repair open circuit in wiring harness
-> End |
| 3 |
Check CAN comfort (low) for open circuit |
- Measure specific resistance between pin 2 of plug C on the PCM2 control module and pin 2 of plug B on the air-conditioning control module.
|
< 5
Step 4 |
Repair open circuit in wiring harness
-> End |
| 4 |
|
-> End |