1. Pull off plug I on the display and operator control unit.
2. Pull off plug III on the instrument cluster.
3. Check lead from plug I pin 21 to plug III pin 11 for continuity and short to B+.
Short to ground
1. Pull off plug I on the display and operator control unit.
2. Pull off plug III on the instrument cluster.
3. Check lead from plug I pin 21 to plug III pin 11 for short to ground.
Signal disturbance
Check lead from plug I pin 21 to plug III pin 11 for short with other leads.
Test Point 10
Test point 10
Vehicle data record
Programming error
Fault code 29
1. Select menu item Modify coding.
2. Select Vehicle model.
3. Modify coding from LHD vehicle (RHD vehicle) to RHD vehicle (LHD vehicle).
4. Modify coding from RHD vehicle (LHD vehicle) to LHD vehicle (RHD vehicle).
If the fault appears again, replace the display and operator control unit.
Test Point 11
Test point 11
Program memory
Programming error
Fault code 30
1. Remove CD from navigation unit.
2. Switch off PCM.
3. Switch on PCM and insert CD.
4. Clear fault memory.
5. Read out fault memory
If the fault appears again, insert a different CD (older version).
6. Switch off PCM.
7. Switch on PCM.
8. Clear fault memory.
9. Read out fault memory
If the fault appears again, replace the display and operator control unit.
Test Point 12
Test point 12
Signal, terminal 15 PCM
Open circuit
Fault code 31
NOTE: This fault is stored only if the vehicle is driven faster than 50 km/h for more than 10 seconds.
1. Check fuse E 8.
2. Pull off plug II on the display and operator control unit.
3. Connect voltmeter to plug II pin 2 (positive) and ground.
Switch on ignition. Display: Battery voltage.
Test Point 13
Test point 13
Signal, terminal 86 s PCM