1 - 23
Fault, Fault code
Possible causes, elimination, notes
Test point 1
Door(s) secured and terminal 15 on
Fault code 01
1. Disconnect plug connection X 11 (driver's side).
2. Check the lead from X 11 pin A1 (pin side) to the alarm control module plug I, pin 5, for continuity.
3. Check the leads from X 11 pin A1 and pin 26 (sleeve side) for continuity.
NOTE: There is another plug connection in the door on the door lock module.
4. Disconnect the plug connection X 12 (passenger 5 side).
5. Check the lead from X 12 pin A1 (pin side) to the alarm control module plug I, pin 28, for continuity.
6. Check the leads from X 12 pin A1 and pin 26 (sleeve side) for continuity.
Test point 2
Door lock barrel closed, activated longer than 60 s
Fault code 02
NOTE: This fault can also be caused by incorrect operation (door lock actuated toward "Closed" direction for longer than 60 seconds).
1. Pull off plug I on the alarm control module.
2. Disconnect plug connection X 11 (driver's side).
3. Disconnect the plug connection X 12 (passenger's side).
4. Check the leads from the alarm control module plug I pin 35 to the door lock modules for short to ground.
Ohmmeter on alarm control module plug I pin 35 and ground.
Display: Infinity ohm
5. Check driver's side door lock module switch contact.
Ohmmeter at plug connection X 11 pin A2 (sleeve side) and ground.
Door lock not actuated.
Display: Infinity ohm
Door lock actuated towards 'Closed".
Display: < 5 ohm
6. Check passenger's side door lock module switch contact.
Ohmmeter at plug connection X 12 pin A2 (sleeve side) and ground.
Door lock not actuated.
Display: Infinity ohm
Door lock actuated towards "Closed".
Display: < 5 ohm
Test point 3
Door lock barrel open, actuated for longer than 60 s
Fault code 03
NOTE: This fault can also be caused by incorrect operation (door lock actuated toward "Open" direction for longer than 60 seconds).
1. Pull off plug I on the alarm control module.
2. Disconnect plug connection X 11 (driver's side).
3. Disconnect the plug connection X 12 (passenger's side).
4. Check the leads from the alarm control module plug I pin 15 to the door lock modules for short to ground.
Ohmmeter on alarm control module plug I pin 15 and ground.
Display: Infinity ohm
5. Check driver's side door lock module switch contact.
Ohmmeter at plug connection X 11 pin A6 (sleeve side) and ground.
Door lock not actuated.
Display: Infinity ohm
Door lock actuated towards "Open".
Display: < 5 ohm
6. Check passenger's side door lock module switch contact.
Ohmmeter at plug connection X 12 pin A6 (sleeve side) and ground.
Door lock not actuated.
Display: Infinity ohm
Door lock actuated towards "Open".
Display: < 5 ohm
Test point 4
Door lock barrel closed
Short to ground
Fault code 04
Troubleshooting in accordance with test point 2.
Test point 5
Door lock barrel open
Short to ground
Fault code 05
Troubleshooting in accordance with test point 3.
Test point 6
Door lock barrel open/closed
Short to ground
Fault code 06
1. Pull off plug I on the alarm control module.
2. Disconnect plug connection X 11 (driver's side).
3. Disconnect the plug connection X 12 (passenger's side).
4. Check the leads from the alarm control module plug I pin 35 to the door lock modules for short to ground.
Ohmmeter at alarm control module plug I pin 35 and ground
Display: Infinity ohm
5. Check driver's side door lock module switch contact.
Ohmmeter at plug connection X 11 pin A4 (sleeve side) and ground.
Door lock not actuated.
Display: Infinity ohm
Door lock actuated towards "Closed".
Display: < 5 ohm
6. Check passenger's side door lock module switch contact.
Ohmmeter at plug connection X 12 pin A4 (sleeve side) and ground.
Door lock not actuated.
Display: Infinity ohm
Door lock actuated towards "Closed".
Display: < 5 ohm
7. Check the leads from the alarm control module plug I pin 15 to the door lock modules for short to ground.
Ohmmeter on alarm control module plug I pin 15 and ground.
Display: Infinity ohm
8. Check driver's side door lock module switch contact.
Ohmmeter at plug connection X 11 pin A6 (sleeve side) and ground.
Door lock not actuated.
Display: Infinity ohm
Door lock actuated towards "Open".
Display: < 5 ohm
9. Check passenger's side door lock module switch contact.
Ohmmeter at plug connection X 12 pin A6 (sleeve side) and ground.
Door lock not actuated.
Display: Infinity ohm
Door lock actuated towards "Open".
Display: < 5 ohm
Test point 7
Central locking button closed
Short to B+
Fault code 07
1. Pull off plug I on the alarm control module.
2. Check the central locking button.
Voltmeter at plug I pin 29 and ground.
Central locking button not actuated.
Display: 0 V
Central locking button actuated towards "Closed".
Display: Battery voltage.
3. Disconnect the plug connection at the central locking button.
4. Check the lead from the alarm control module to the central locking button for short to B+.
Voltmeter at plug I pin 29 and ground.
Display: 0 V
Test point 8
Central locking button open
Short to B+
Fault code 08
1. Pull off plug I on the alarm control module.
2. Check the central locking button.
Voltmeter at plug I pin 10 and ground.
Central locking button not actuated.
Display: 0 V
Central locking button actuated towards "Open".
Display: Battery voltage
3. Disconnect the plug connection at the central locking button.
4. Check the lead from the alarm control module to the central locking button for short to B+.
Voltmeter at plug I pin 10 and ground.
Display: 0 V
Test point 9
Central locking button open/closed
Short to B+
Fault code 09
1. Pull off plug I on the alarm control module.
2. Check the central locking button.
Voltmeter at plug I pin 29 and ground.
Central locking button not actuated.
Display: 0 V
Central locking button actuated towards "Closed".
Display: Battery voltage.
Voltmeter at plug I pin 10 and ground.
Central locking button not actuated.
Display: 0 V
Central locking button actuated towards "Open".
Display: Battery voltage
3. Disconnect the plug connection at the central locking button.
4. Check the leads from the alarm control module to the central locking button for short to B+.
Voltmeter at plug I pin 29 and ground.
Display: 0 V
Voltmeter at plug I pin 10 and ground.
Display: 0 V
Test point 10
Power failure, terminal 30 with active alarm system
Fault code 10
1. Check battery.
2. Check the alarm control module power supply.
Voltmeter at alarm control module plug II pin 1 (negative) and pin 7 (positive).
Display: Battery voltage.
NOTE: The positive lead (terminal 30) is fused in the distribution board with an 80 A fuse.
Test point 11
Power failure during alarm output
Fault code 11
Troubleshooting in accordance with test point 10.
Test point 12
Wrong door lock module
Fault code 12
NOTE: This fault concerns only USA vehicles. USA - vehicles do not have the "Door secured" function.
1. Check the driver's side/passenger's side door lock module and, if necessary, replace it with a door lock module for USA vehicles.
Test point 13
Left door secured but not locked
Fault code 13
1. Pull off plug I on the alarm control module.
2. Disconnect plug connection X 11 (driver's side).
3. Check the lead from the alarm control module plug I pin 30 to the door lock module for short to ground.
Ohmmeter on alarm control module plug I pin 30 and ground.
Display: Infinity ohm
4. Check driver's side door lock module switch contact.
Ohmmeter at plug connection X 11 pin A5 (sleeve side) and ground.
Door locked
Display: Infinity ohm
Door not locked
Display: < 5 ohm
Test point 14
Right door secured but not locked
Fault code 14
1. Pull off plug I on the alarm control module.
2. Disconnect the plug connection X 12 (passenger's side).
3. Check the lead from the alarm control module plug I pin 32 to the door lock module for short to ground.
Ohmmeter at alarm control module plug I pin 32 and ground
Display: Infinity ohm
4. Check passenger's side door lock module switch contact.
Ohmmeter at plug connection X 12 pin A5 (sleeve side) and ground.
Door locked.
Display: Infinity ohm
Door not locked.
Display: < 5 ohm
Test point 15
Control module faulty
Fault code 15
Replace alarm control module.
Test point 16
Signal from the airbag
Short to B+
Fault code 16
1. Pull off plug I on the alarm control module.
2. Unplug the DME (ECM) connector.
3. Pull off the airbag control module plug.
4. Voltmeter at alarm control module plug I pin 33 and ground.
Display: 0 Volt
5. If no fault can be detected on the wiring harness, reattach the plug to the alarm control module and the airbag control module.
6. Switch on the ignition and clear the fault memory of the alarm system.
If the fault no longer occurs, the DME control module is faulty.
If the fault occurs again, detach the plug on the airbag control module.
7. Clear the fault memory of the airbag system.
If the fault no longer occurs, the airbag control module is faulty.
If the fault occurs again, the alarm system control module is faulty.
Test point 17
Signal from airbag
Short to B+
Fault code 17
1. Pull off plug I on the alarm control module.
2. Unplug the DME (ECM) connector.
3. Pull off the airbag control module plug.
4. Voltmeter at alarm control module plug I pin 33 and positive.
Display: 0 Volt
5. If no fault can be detected on the wiring harness, reattach the plug to the alarm control module and the airbag control module.
6. Switch on the ignition and clear the fault memory of the alarm system.
If the fault no longer occurs, the DME control module is faulty.
If the fault occurs again, detach the plug on the airbag control module.
7. Clear the fault memory of the airbag system.
If the fault no longer occurs, the airbag control module is faulty
If the fault occurs again, the alarm system control module is faulty.
Test point 18
Power window control
Short to ground
Fault code 18
1. Pull off plug I on the alarm control module.
2. Pull off plug I on the convertible top control module.
3. Ohmmeter on alarm control module plug I pin 18 and ground.
Display: Infinity ohm
If display < 5 ohm, check wiring harness for chafing and pinching damage.
Test point 19
Status lead, signal converter
Short to B+
Fault code 19
1. Pull off plug I on the alarm control module.
2. Pull off the plug on the signal converter for the transponder.
3. Voltmeter at plug I alarm control module pin 12 and ground.
Switch ignition on.
Display: 0 Volt
If battery voltage is displayed, check the wiring harness for pinches and chafing damage.
Test point 20
Status lead, signal converter
Short to ground
Fault code 20
1. Pull off plug I on the alarm control module.
2. Pull off the plug on the signal converter for the transponder.
3. Ohmmeter on alarm control module plug I pin 12 and ground.
Display: Infinity ohms
If display < 5 ohm, check wiring harness for chafing and pinching damage.
Test point 21
W-lead (DME - immobilizer)
Open circuit
Fault code 21
1. Pull off plug I on the alarm control module.
2. Unplug the DME (ECM) connector.
3. Ohmmeter at plug I, alarm control module pin 23, and DME plug pin 88.
Display: < 5 ohm
NOTE: The lead is routed via plug connection X 3/1 pin 14.
4. Ohmmeter on alarm control module plug I pin 23 and ground.
Display: Infinity ohm
5. Voltmeter at plug I alarm control module pin 23 and ground.
Switch ignition on.
Display: 0 Volt
If no fault can be detected in the wires, either the DME control module or the alarm system control module is faulty.
Test point 22
Passenger compartment monitoring sensor
Short to ground
Fault code 22
1. Pull off plug I on the alarm control module.
2. Pull off the plug at the passenger compartment monitoring sensor.
3. Ohmmeter on alarm control module plug I pin 24 and ground.
Display: Infinity ohm
If display < 5 ohm, check wiring harness for chafing and pinching damage.
Test point 23
W-lead (DME - immobilizer)
Short to B+
Fault code 23
See test point 21, point 5 above.