Fault code 9115: Diagnosis/troubleshooting

DIAGNOSIS/TROUBLESHOOTING - FAULT CODE 9115

Work instruction			Display OK	If not OK
1	Read out air-conditioning system fault memory	Check whether the air-conditioning control unit is still functional. Check voltage supply and fuse of the air-conditioning system control unit Read out air-conditioning system fault memory and remove stored faults.	The fault is remedied -> End	Step 2
2	Check CAN Comfort high for open circuit	Switch off ignition Remove plug A from the instrument cluster Pull plug off the control unit of the air-conditioning system Measure resistance between plug A on the instrument cluster pin 14 and plug B on control unit of air-conditioning sytem pin 1	< 5 Step 3	Repair wiring harness -> End
3	Check CAN Comfort low for open circuit	Measure resistance between plug A on the instrument cluster pin 30 and plug B on control unit of air-conditioning system pin 2	< 5 Step 4	Repair wiring harness. -> End
4	Replace the control unit of the air-conditioning system.		-> End