Below limit
Above limit
1 Check power supply to CMP sensors.
1. Remove connector of CMP sensor 1.
2. Switch on the ignition.
3. Connect voltmeter to pin 1 (negative) and pin 3 (positive).
Display: approx. 5 V
2 Check power supply wiring for continuity.
1. Remove connector of CMP sensor 1.
2. Connect special tool 9637 to wiring harness (DME control module connector).
3. Connect ohmmeter to special tool 9637, pin III/7, and to CMP sensor connector 1, pin 3.
Display: 0 - 5 ohms
4. Connect ohmmeter to special tool 9637, pin III/17, and to CMP sensor connector 1, pin 1.
Display: 0 - 5 ohms
3 Perform adaptation.
1. Switch on the ignition.
2. Wait one minute.
Do not press the accelerator.
3. Switch off the ignition for at least 10 seconds.
4. Read out the fault memory.