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Fault code 2197: Diagnosis/troubleshooting

NOTE:
  • Before replacing the control module, the ground connections, power supply and plug connections on the control module must be checked.
  • When replacing the vehicle electrical system control module, observe the coding of the control module.
  • After the test drive, read out the fault memory with the Porsche System Tester II No. 9588 again. Additional causes of faults that could damage the vehicle electrical system control module should be detected and remedied.
DIAGNOSIS/TROUBLESHOOTING CHART

Work instruction Display OK If not OK
1 Check lines for short circuit to B+:
  • Switch off the ignition.
  • Pull out plug 'A'
  • on vehicle electrical system control module.
  • Pull out roof console plug.
  • Switch on ignition.
  • Measure voltage between vehicle electric system plug 'A' 'Pin 12, 25' and ground.
 < 0.3 V
Go to Step 2		 Repair / replace wiring harness
→ End
2 Check lines for short circuit to ground:
  • Switch off the ignition.
  • Measure resistance between vehicle electric system plug 'A' 'Pin 12, 25' and ground.
 ∞ Ω
Go to Step 3		 Repair / replace wiring harness
→ End
3 Check lines for open circuit:
  • Measure resistance between plug control module 'A'
  • 'Pin 12, 25' and roof console plug 'Pin 15, 16'.
 < 0.5 V
Go to Step 4		 Repair / replace wiring harness
→ End
4 Replace footwell light potentiometer on a trial basis.
  • Erase fault memory.
  • Satisfy diagnostic conditions
  • Read out fault memory again
 Fault code 2197 not entered.
→ End		 Fault code 2197 re-entered.
Go to Step 5
5 Replace vehicle electrical system control module
  • Observe note
 → End
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