Replace control unit.
Test Point 31
TEST POINT 31
Transponder (Relearning Necessary)
Fault Code 31
Fault Effect: No engine start possible
Procedure
Relearn key.
Test Point 32
TEST POINT 32
Interior monitoring Sensor Short To B+ Or Faulty
Fault Code 32
Fault Effect: No passenger compartment monitoring
Procedure
1. Check power supply for passenger compartment monitoring sensor. Disconnect plug connection to the passenger compartment monitoring
sensor.
Voltmeter at plug connection, passenger compartment sensor monitoring pin 1 (positive) and pin 4 (negative).
Display: Battery voltage
2. Pull plug I off the alarm system control module.
3. Voltmeter at alarm system control module plug I, pin 24 and ground
Display: 0 Volts
If battery voltage is displayed, check the wiring harness for pinches and chafing damage.
4. If no fault is detected, replace the alarm system control module.
Test Point 33
TEST POINT 33
Interior monitoring Sensor Faulty
Fault Code 33
Fault Effect: No passenger compartment monitoring
Procedure
1. Pull plug I off the alarm system control module.
2. Pull plug off the signal converter.
- Voltmeter at alarm system control module plug I, pin 3 and ground
Display: 0 Volts
- Ohmmeter at alarm system control module plug I, pin 3 and ground
Display: infinity
- Ohmmeter at alarm system control module plug I, pin 3 and signal converter plug pin 8