Fault code 43: Diagnosis/troubleshooting

DIAGNOSIS/TROUBLESHOOTING (FAULT CODE 43)

Work instruction			Display OK	If not OK
1	Check country coding	In menu item "Country coding", check whether the control module has been correctly coded	Step 2	Re-code control module ->End
2	Check wire from the alarm system control module to the "safe" contact for short circuit to ground.	Switch off ignition Pull plugs A and B off the alarm system control module Pull plug off the door lock on the passenger's side Measure resistance between plug A on alarm system control module pin 28 and ground	Step 3	Repair wiring harness -> End
3	Check wire from the alarm system control module to the "safe" contact for short circuit to B+	Switch on ignition Measure voltage between plug A on alarm system control module pin 28 and ground	0 V Step 4	Repair wiring harness -> End
4	Check wire from the alarm system control module to the "safe" contact for open circuit	Switch off ignition Measure resistance between plug A on alarm system control module pin 28 and pin 7 on plug of door lock on passenger's side	< 5 Step 4	Repair wiring harness -> End
5	Check the wire from the alarm system control module to the central locking switch for short circuit to ground	Pull plug off central locking switch Measure resistance between plug A on alarm system control module pin 29 and ground	Step 6	Repair wiring harness -> End
6	Check the wire from the alarm system control module to the central locking switch for short circuit to B+	Switch on ignition Measure voltage between plug A on alarm system control module pin 29 and ground	0 V Step 7	Repair wiring harness -> End
7	Check the wire from the alarm system control module to the central locking switch for open circuit	Switch off ignition Measure resistance between plug A on control module pin 29 and plug on central locking switch pin 1	< 5 Step 8	Repair wiring harness -> End
8	Check wire from the alarm system control module to the central locking motor for short circuit to ground.	Pull plug off the passenger's door lock Measure resistance between plug B on alarm system control module pin 3 and ground	Step 9	Repair wiring harness -> End
9	Check wire from the alarm system control module to the central locking motor for short circuit to B+	Switch on ignition Measure voltage between plug B on alarm system control module pin 3 and ground	0 V Step 10	Repair wiring harness -> End
10	Check wire from the alarm system control module to the central locking motor for open circuit	Switch off ignition Measure resistance between plug B on alarm system control module pin 3 and pin 1 on plug of door lock on passenger's side	< 5 Step 11	Repair wiring harness -> End
11	Replace passenger's door lock		-> End