Display: infinity
5. Voltmeter at alarm system control module plug I pin, 23 and ground. Switch ignition on.
Display: 0 Volts
If no fault can be detected, either the DmE control module or the alarm system control module is faulty.
Test Point 22
TEST POINT 22
Interior monitoring Sensor Short To Ground
Fault Code 22
Fault Effect: No passenger compartment monitoring
Procedure
1. Pull plug I off the alarm system control module.
2. Pull off the plug at the interior monitoring sensor.
3. Ohmmeter at alarm system control module plug I pin 24 and ground.
Display: infinity
If display < 5 ohms, check wiring harness for chafing and pinching damage.
Test Point 23
TEST POINT 23
W lead (DmE Immobilizer) Short To B+
Fault Code 23
Procedure
1. Voltmeter at alarm system control module plug I pin, 23 and ground. Switch ignition on.
Display: 0 Volts
If no fault can be detected, either the DmE control module or the alarm system control module is faulty.
Test Point 24
TEST POINT 24
Control Unit Faulty
Fault Code 24
Fault Effect: No engine start possible
Procedure
Replace control unit.
Test Point 25
TEST POINT 25
No Terminal 86 S Recognized
Fault Code 25
Procedure
1. Check the fuses F 5/1.