RAM 1500 Truck 4WD V8-5.7L VIN D (2005)
Turn the ignition off.
Disconnect the clockspring C1 connector.
Momentarily connect a jumper wire between the Horn Switch Sense circuit at the clockspring connector and ground.
Q: Did the horns sound?
YES: Replace the clockspring. Perform BODY VERIFICATION TEST - VER 1. See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification Tests/Body Verification Test
NO: Go To 6
6. HORN SWITCH SENSE
Turn the ignition off.
Disconnect the clockspring C1 connector.
Disconnect the Instrument Cluster C3 connector.
NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance of the Horn Switch Sense circuit between the clockspring C1 connector and the Instrument Cluster C3 connector.
Q: Is the resistance below 5.0 ohms?
YES: Replace the Instrument Cluster. Perform BODY VERIFICATION TEST - VER 1. See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification Tests/Body Verification Test
NO: Repair the Horn Switch Sense circuit for an open. Perform BODY VERIFICATION TEST - VER 1. See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification
