Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup and 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

TEST FOR INTERMITTENT CONDITION
NOTE:
Before proceeding with this diagnostic procedure, verify the Left and Right Multifunction Switch and Clockspring harness connectors are properly seated and verify proper pin terminal tension. A loose connection at any of these connectors may cause this DTC to set.
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 2.
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
CHECK FOR A SHORTED HORN SWITCH
WARNING:
To avoid possible serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
1. Remove the Driver Airbag in accordance with the Service Information.
2. Disconnect the Horn switch connector.
  NOTE:
  Before proceeding, thoroughly inspect the wiring harness and connectors between the Horn Switch and the Right Steering Wheel Switch. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
  
  WARNING:
  Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
3. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 3.
  No
  - Replace the Horn Switch in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST for 1500, 2500 & 3500, or BODY VERIFICATION TEST for 3500 CAB & CHASSIS, 4500 & 5500.
CHECK (X3) HORN SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND

Fig 1: Checking Horn Switch Sense Circuit For A Short To Ground
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Right Steering Wheel Switch harness connector.
3. Measure the resistance of the (X3) Horn Switch Sense circuit between ground and the Right Steering Wheel Switch harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the short to ground in the (X3) Horn Switch Sense circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST for 1500, 2500 & 3500, or BODY VERIFICATION TEST for 3500 CAB & CHASSIS, 4500 & 5500.
  No
  - Go To 4.
CHECK (X3) HORN SWITCH SENSE CIRCUIT FOR A SHORT TO THE (X920) RADIO CONTROL MUX RETURN CIRCUIT

Fig 2: Checking Horn Switch Sense Circuit For A Short To The Radio Control MUX Return Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance between the (X3) Horn Switch Sense circuit and the (X920) Radio Control MUX Return circuit at the Right Steering Wheel Switch harness connector.
  Is the resistance below 10k Ohms between the (X3) Horn Switch Sense circuit and the (X920) Radio Control MUX Return circuit?
  
  Yes
  - Repair the short between the (X3) Horn Switch Sense circuit and the (X920) Radio Control MUX Return circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST for 1500, 2500 & 3500, or BODY VERIFICATION TEST for 3500 CAB & CHASSIS, 4500 & 5500.
  No
  - Replace the Right Steering Wheel Switch in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST for 1500, 2500 & 3500, or BODY VERIFICATION TEST for 3500 CAB & CHASSIS, 4500 & 5500.