9-3 (9440) FaultTrace Mode

Checking the power supply

Unplug the connector:

Ionization Detection Module CDM 740

Turn the ignition switch to the ON position.

Measure the voltage across:

Ionization Detection Module CDM 740

• Pin 12

• B-

• 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 reading should be 11V - 16V

Is the function correct?

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