The line runs via plug connection X 3/1 pin 14

4. Ohmmeter at plug I alarm control unit pin 23 and ground.

5. Voltmeter at plug I alarm control unit pin 23 and ground.

If no fault can be detected, try replacing the alarm control unit. If the fault is still present, the DME control unit is faulty.

Test point 22

Passenger compartment monitoring sensor

Fault code 22

1. Pull off plug I on the alarm control unit.

2. Pull off the plug on the passenger compartment monitoring sensor,

3. Ohmmeter at plug I, alarm control unit pin 24, and ground.

If display < 5 Q, check the wiring harness for pinches and chafing

Fault, fault code Possible causes, elimination, notes

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