Symptom: Controller Failure

When Monitored and Set Condition: 

When Monitored: Ignition on. The CAB monitors its internal microprocessors for correct operation.

Set Condition: If the CAB detects an internal fault, the DTC is set.

POSSIBLE CAUSES 

1. GROUND AND POWER CONNECTIONS
2. GROUND CIRCUIT HIGH RESISTANCE
3. GROUND CIRCUIT INTERFERENCE
4. CAB - INTERNAL FAILURE

Fig 1: Test Chart - Controller Failure (1 Of 2)

Courtesy of DAIMLERCHRYSLER CORP.

Fig 2: Test Chart - Controller Failure (2 Of 2)

Courtesy of DAIMLERCHRYSLER CORP.