RAM 2500 Truck 4WD V8-5.7L VIN D (2005)
Q: Is the voltage below 10.5 volts?
YES: Repair the (F21) Fused Ignition Switch Output (Run/Start) circuit for an open. Perform BODY VERIFICATION TEST - VER 1. See:
Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification Tests/Body Verification Test
NO: Go To 7
7. CHECK THE (F1) FUSED IGNITION SWITCH OUTPUT (OFF/RUN/START) CIRCUIT FOR AN OPEN
Turn the ignition off.
Disconnect the Instrument Cluster C3 harness connector.
Turn the ignition on.
Measure the voltage between the (F1) Fused Ignition Switch Output (Off/Run/Start) circuit and ground.
Q: Is the voltage below 10.5 volts?
YES: Repair the (F1) Fused Ignition Switch Output (Off/Run/ Start) circuit for an open. Perform BODY VERIFICATION TEST - VER 1. See:
Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification Tests/Body Verification Test
NO: Go To 8
8. CHECK THE (Z18) INSTRUMENT CLUSTER GROUND CIRCUIT FOR AN OPEN
Turn the ignition off.
Disconnect the Instrument Cluster C3 harness connector.
Measure the resistance between ground and the (Z18) Instrument Cluster Ground circuit.
Q: Is the resistance below 5.0 ohms?
YES: Replace and configure the Instrument Cluster. Perform BODY VERIFICATION TEST - VER 1. See: Testing and Inspection/Diagnostic
Trouble Code Tests and Associated Procedures/Verification Tests/Body Verification Test
