9-3 (9440) FaultTrace Mode

Checking the power supply

For more information.

Unplug the connector:

Absolute pressure sensor, charge air 603

Turn the ignition switch to the ON position.

Connect test lamp 86 11 857 to pin 3 of the female connector and a good grounding point.

Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

The test lamp should light.

Is the function correct?