3. Ground Circuit(S) Open

Turn the ignition off.

Measure the resistance of the Ground circuits from the CAB harness connector.

Fig 1: Measuring Resistance Of Ground Circuits From CAB Harness Connector

Courtesy of DAIMLERCHRYSLER CORP.

Is the resistance below 5.0 ohms? 

1. Yes  >> Go to 4
2. No  >> Repair the Ground circuit(s) for an open.

   Perform ABS VERIFICATION TEST. See ANTI-LOCK BRAKES article.