Check the Harness Between Module and Impact Sensor

Check The Wiring Harness Between The Control Module And The Driver's Side Impact Sensor

Turn the ignition switch to the OFF position.







Unplug the connector:
Impact sensor, driver's door 328D







- Check pin 1 and 2 for open circuit/pin slid-out and rectify if necessary.
Unplug the connector:
Control module, Airbag 331







- Check pins 41 and 42 for open circuit/pin slid-out and rectify if necessary.
- Connect the break-out box (BOB) to the wiring harness.
Take a resistance reading between
- 42 Control module, Airbag







- 2 Impact sensor, driver's door







- Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.

The reading should be 0 - 2 Ohm

Is the function correct?

NO - Rectifying the Lead


YES - Continue to Check The Wiring Harness Between The Control Module And The Driver's Side Impact Sensor

Measure the resistance. The reading obtained should be infinity.
- 42 Control module, Airbag







- B-







- Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.

Is the function correct?

NO - Rectifying the Lead

YES - Continue to Check The Wiring Harness Between The Control Module And The Driver's Side Impact Sensor

Take a resistance reading between
- 41 Control module, Airbag







- 1 Impact sensor, driver's door







- Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.
The reading should be 0 - 2 Ohm

Is the function correct?

NO - Rectifying the Lead

YES - Continue to Check The Wiring Harness Between The Control Module And The Driver's Side Impact Sensor

Measure the resistance. The reading obtained should be infinity.







- 41 Control module, Airbag
- B-







- Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.

Is the function correct?

NO - Rectifying the Lead

YES - Changing Components