2. Apps

Turn the ignition off.

Disconnect the APPS harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Turn the ignition on.

Connect a jumper wire between the APPS 5-Volt Supply circuit and the APPS Signal #1 circuit at the APPS harness connector.

With the DRB III(R), monitor the APPS #1 voltage.

Fig 1: Monitoring APPS #1 Voltage

Courtesy of DAIMLERCHRYSLER CORP.

Is the voltage below 2.0 volts?

Yes >> Replace the Accelerator Pedal Position Sensor. See FUEL SYSTEM article.
See POWERTRAIN VERIFICATION TEST - VER 2 .
No >> Go To 3