PCM2 - MMI: 8009
8009 PCM2 - MMIMOST fault optical/electrical
Diagnostic conditions
- Ignition ON.
- PCM2 on.
Possible cause of fault
- An optical (optical waveguide) or electrical (PCM2) open circuit in the ring
- MOST switch in production mode
- An optically/electrically faulty MOST control module is connected to the MOST
NOTE:
- The MOST optical waveguide is connected to the following control modules:
- Amplifier
- CD changer
- Telephone/telematics
A - K lead
B - CAN Comfort
C - Electrical MOST (internal)
D - Optical MOST (external)
E - MOST diagnosis line
1 - Porsche System Tester II No.9588
2 - Diagnostic box
3 - Instrument cluster (gateway)
4 - PCM2 (internal amplifier)
5 - PCM2 (tuner)
6 - PCM2 (gateway) (MOST nodes)
7 - External amplifier (MOST nodes)
8 - CDC (CD changer) (MOST nodes)
9 - Telephone/telematics (MOST nodes)
10 - PCM2 (MOST switch)
11 - MMI (Man Machine Interface) (MOST nodes)
12 - PCM2 single CD
13 - Navigation (MOST nodes)
14 - VOCS (voice control system) (MOST nodes)
Affected pin
-
Diagnosis/troubleshooting
