+30 supply

Loss of +30 supply to the control module leads to total loss of function.

Check 30 by arming/disarming the anti-theft alarm. See .

For US/CA, start fault diagnosis as point 1

For EU, start fault diagnosis as point 2.

Check fuse 23 and check that there is voltage to the fuse. Connect the test lamp between the fuse and a safe grounding point. The test lamp should light.

If the test lamp lights, proceed to point 2. If the test lamp does not light, continue fault diagnosis in Service Manual 3:2 Electrical system, "+30 Power Supply".

Unplug connector H33-3. Connect the test lamp between H33-3, pin 5 and a safe grounding point. The test lamp should light.

If the lamp lights, proceed to point 4. If the test lamp does not light, proceed to point 3.

Connect the test lamp between fuse 23 and a safe grounding point. The test lamp should light.

If the test lamp lights, check and take action on the cable assembly between connector H33-3, pin 5 and fuse 23. If the test lamp does not light, continue fault diagnosis in Service Manual 3.2 Electrical System, "+30 Power Supply".

Connect the test lamp between fuse 1 and a safe grounding point. The test lamp should light.

If the test lamp lights, check and take action on the cable assembly between connector H33-3, pin 5 and fuse 1. If the test lamp does not light, continue fault diagnosis in Service Manual 3.2 Electrical System, "+30 Power Supply".

Conduct a continuity test on the cable assembly between connector H33-3, pin 5 and the control module, pin 25. The resistance should be < 1 Ohm.

If the resistance is incorrect, take action on the cable assembly. If the resistance is correct, proceed to point 5.

Check the function and check if the fault­symptom remains.

If the problem remains, proceed to .