Diagnostic Test

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

INTERMITTENT CONDITION
1. Disconnect any connectors or aftermarket wiring connected to the Trailer Tow Wiring Connector.
2. Turn the ignition on.
3. With the scan tool, clear all TIPM DTCs.
4. Turn on the Right Turn Signal.
5. With the scan tool, read the DTC information.
  Does the scan tool display B17B2-RIGHT TRAILER TOW LAMP CONTROL CIRCUIT LOW?
  
  Yes
  - Go To 2.
  No
  - The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(L656) RIGHT REAR TURN SIGNAL CONTROL CIRCUIT SHORTED TO GROUND

Fig 1: Checking Right Rear Turn Signal Control Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the TIPM C5 harness connector.
3. Measure the resistance between ground and the (L656) Right Rear Turn Signal Control circuit.
  Is the resistance above 10k Ohms?
  
  Yes
  - Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Repair the short to ground in the (L656) Right Rear Turn Signal Control circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .