Fault code 9101: Diagnosis/troubleshooting
DIAGNOSIS/TROUBLESHOOTING CHART - FAULT CODE 9101
| Work instruction |
Display OK |
If not OK |
| 1 |
Check CAN bus leads, CAN-high and CAN-low for short circuit |
- Switch off ignition
- Pull off plug A on instrument cluster
- Remove plug from the Tiptronic control module (if present)
- Pull off plug on PSM control module
- Pull off steering angle sensor plug
- Pull off plug on DME control module
- Measure resistance on plug A of the instrument cluster between pin 15 and pin 31
- Measure resistance on plug B of the DME control module between pin 3 and pin 4
|
Step 2 |
Repair wiring harness
-> End |
| 2 |
Check CAN bus lead, CAN-high for short to ground |
- Measure resistance between plug A on instrument cluster pin 15 and ground
- Measure resistance on plug B of the DME control module between pin 3 and ground
|
Step 3 |
Repair wiring harness
-> End |
| 3 |
Check CAN bus lead, CAN-low for short to B+ |
- Switch on ignition
- Measure resistance between plug A on instrument cluster pin 31 and ground
- Measure voltage on plug B of the DME control module between pin 3 and ground
|
0 V
Step 4 |
Repair wiring harness
-> End |
| 4 |
Determine faulty control module |
- Switch off ignition
- Reconnect plugs to all control modules
- Pull off plugs on control modules (except instrument cluster) individually and read out the fault memory of the instrument cluster and check whether the fault has been remedied
|
The fault is remedied by disconnecting the plug connection of a control module
Step 5 |
The fault is still present Step 6 |
| 5 |
- Replace the control module which was last disconnected from the CAN bus
|
-> End |
| 6 |
- Replace instrument cluster
|
-> End |