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Fault code 20: Diagnosis/troubleshooting

DIAGNOSIS/TROUBLESHOOTING (FAULT CODE 20)

Work instruction Display OK If not OK
1 Check wiring from signal converter to control module for short circuit to ground.
  • Switch off the ignition.
  • Pull plug A off the control module.
  • Pull plug off the signal converter.
  • Switch on ignition.
  • Measure resistance between plug A on control module pin 4 and ground.
  • Measure resistance between plug A on control module pin 3 and ground.
 Step 2 Repair wiring harness.
-> End
2 Check wiring from signal converter to the control module for open circuit.
  • Switch off the ignition.
  • Measure resistance between plug A on control module pin 4 and plug on signal converter pin 6.
  • Measure resistance between plug A on control module pin 3 and plug on signal converter pin 8.
 < 5
Step 3		 Repair wiring harness.
-> End
3
  • Replace signal converter.
 -> End
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