Fault code 9102: Diagnosis/troubleshooting

DIAGNOSIS/TROUBLESHOOTING - FAULT CODE 9102

Work instruction			Display OK	If not OK
1	Check CAN bus leads, CAN-high and CAN-low for short circuit.	Switch off ignition Pull plug A off the instrument cluster Pull plug off the air-condioning control module Measure resistance on plug A of the instrument cluster between pin 14 and pin 30	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 14 and ground	Step 3	Repair wiring harness -> End
3	Check CAN bus lead, CAN-low for short to B+	Switch on ignition Measure voltage between plug A on instrument cluster pin 30 and ground	0 V Step 4	Repair wiring harness -> End
4	Replace faulty control module	Switch off ignition Reattach the plugs on instrument cluster Read out fault memory from instrument cluster and check whether the fault has been remedied.	Fault has been remedied Step 5	The fault is still present Step 6
5	Replace the air-conditioning system control module.		-> End
6	Replace instrument cluster		-> End