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Fault code 25: Diagnosis/troubleshooting

DIAGNOSIS/TROUBLESHOOTING (FAULT CODE 25)

Work instruction Display OK If not OK
1 Check fuse.
  • Check fuse E 1.
 Step 2 Replace fuse E 1.
-> End
2 Check wire from ignition lock to fuse carrier for open circuit.
  • Switch off the ignition.
  • Pull off fuse E 1.
  • Switch on ignition.
  • Measure voltage between fuse carrier (fuse E 1) pin 1 and ground.
 > 11 V
Step 3		 Step 5
3 Check wire from the fuse carrier to the alarm system control module for open circuit.
  • Switch off the ignition.
  • Pull plug A off the alarm system control module.
  • Switch on ignition.
  • Measure voltage between plug A on control module pin 16 and ground.
 > 11 V
Step 7		 Step 4
4 Check wire from the fuse carrier to the alarm system control module for open circuit.
  • Switch off the ignition.
  • Measure resistance between plug A on alarm system control module pin 16 and fuse E 1 pin 2.
 < 5
Step 6		 Repair wiring harness.
-> End
5 Check wire from ignition lock to fuse carrier for open circuit.
  • Switch off the ignition.
  • Pull plug off the ignition lock.
  • Measure resistance between plug on ignition lock pin 86 S and fuse carrier (fuse E 1) pin 1.
 < 5
Step 6		 Repair wiring harness.
-> End
6
  • Replace ignition lock.
 -> End
7
  • Replace alarm system control module.
 -> End
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