8. Measure The Resistance Between Ground And The BAS Release Switch Sensor (Released) Circuit

Turn the ignition off.

Disconnect the CAB harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance between ground and the BAS Release Switch Sensor (Released) circuit at the BAS Brake Booster harness connector.

Fig 1: Measuring Resistance Between Ground & BAS Release Switch Sensor (Released) Circuit

Courtesy of DAIMLERCHRYSLER CORP.

Is the resistance below 100 ohms?

Yes >> Repair the BAS Release Switch Sensor (Released) circuit for a short to ground.
Perform ABS VERIFICATION TEST .
No >> Go to 9