Fault code 9124: Diagnosis/troubleshooting

DIAGNOSIS/TROUBLESHOOTING - FAULT CODE 9124

Work instruction			Display OK	If not OK
1	Check output voltage of the instrument cluster	Pull plug off the sun sensor Measure voltage on plug of sun sensor between pin 2 and pin 3	approx. 5 V Step 5	Step 2
2	Check wire between sun sensor and instrument cluster for short to ground	Disconnect plug B from the instrument cluster Pull plug off the sun sensor Measure resistance between plug B on instrument cluster pin 3 and ground	Step 3	Repair wiring harness -> End
3	Check wires between sun sensor and instrument cluster for short circuit to B+	Switch on ignition Measure voltage between plug B on instrument cluster pin 3 and ground Measure voltage between plug B on instrument cluster pin 19 and ground	0 V Step 4	Repair wiring harness -> End
4	Check wires between sun sensor and instrument cluster for open circuit	Switch off ignition Measure resistance between plug B on the instrument cluster pin 3 and plug on sun sensor pin 3 Measure resistance between plug B on the instrument cluster pin 19 and plug on sun sensor pin 2	< 5 Step 6	Repair wiring harness. -> End
5	Replace sun sensor		-> End
6	Replace instrument cluster		-> End