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 Ohms
If display < 5 Ohms, check wiring harness for pinches and chafing damage.
Test Point 23
Test point 23
W-lead (DME - immobilizer)
Short to B+
Fault code 23
See test point 21, point 5.
Test Point 24
Test point 24
Control module faulty
Fault code 24
Replace control module.
Test Point 25
Test point 25
No terminal 86 S recognized
Fault code 25
1. Check the fuse F 5/1.
2. Pull off plug I on the alarm control module.
3. Voltmeter at plug I alarm control module pin 16 and ground.
Insert the ignition key into the ignition lock.
Display: Battery voltage
4. Pull off the plug on the ignition lock.
5. Ohmmeter at ignition lock plug pin 86 S and plug I, alarm control module pin 16.
Display: < 5 Ohms
6. If no fault is detected, replace the electrical contact part of the ignition lock.
Test Point 26
Test point 26
Variant fault (new coding required)
Fault code 26
Recode equipment variant.
Test Point 27
Test point 27
Control module faulty
Fault code 27
Replace control module.