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Fault code 46: Diagnosis/troubleshooting

DIAGNOSIS/TROUBLESHOOTING (FAULT CODE 46)

Work instruction Display OK If not OK
1 Check micro switches of both door locks.
  • Connect the Porsche System Tester II 9588 and switch on the ignition.
  • Close doors.
  • Do not lock or secure the vehicle.
  • Select the following switch positions in the "Input signals" menu.
  • Driver's side secured.
  • Passenger's side secured.
  • Driver's side locked.
  • Passenger's side locked.
 Driver's side not secured (not applicable to USA vehicles).
Passenger's side not secured (not applicable to USA vehicles).
Driver's side not locked.
Passenger's side not locked.
Step 4		 Step 2
2 Check wiring from control module to door lock for short circuit to ground.
  • Pull plugs A and B off the control module.
  • Pull plug off the door lock with the incorrect switch positions from step 1.
  • Measure resistance between plug A on control module pin 5 and ground (if on driver's side) or pin 28 on the control module and ground (if on passenger's side).
 Step 3 Repair wiring harness.
->End
3 Check wiring from control module to door lock for open circuit.
  • Pull plug off the door lock with the incorrect switch positions from step 1.
  • Measure resistance between plug A on control module pin 5 and plug on door lock pin 7 (if on driver's side) or pin 28 on the control module and pin 7 on the door lock (if on passenger's side).
 < 5
Step 6		 Repair wiring harness.
->End
4 Check wiring from the alarm system control module to the servomotors for short circuit to ground.
  • Pull plugs off both door locks.
  • Pull plugs A and B off the alarm system control module.
  • Measure resistance between plug B on control module pin 9 and ground.
  • Measure resistance between plug A on control module pin 19 and ground.
 Step 5 Repair wiring harness.
->End
5 Check wiring from the alarm system control module to the servomotors for open circuit.
  • Pull plugs off both door locks.
  • Pull plugs A and B off the alarm system control module.
  • Measure resistance between plug B on control module pin 9 and pin 2 on plugs of the right and left door locks.
  • Measure resistance between plug A on control module pin 19 and pin 9 on plugs of the right and left door locks.
 < 5
Step 7		 Repair wiring harness.
->End
6
  • Replace right or left door lock.
 ->End
7
  • Replace control unit.
 ->End
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