Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSDODGE AND RAM2013JOURNEY CREW, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESBODY CONTROL MODULE (BCM) - DTCS B10B3-14 TO B182C-13DIAGNOSIS AND TESTINGB17AD-12-REAR LEFT TRAILER TURN LAMP CONTROL - CIRCUIT SHORT TO BATTERYDIAGNOSTIC TEST

2013 Dodge and Ram Journey Crew, AWD

Diagnostic Test

2013 Dodge and Ram Journey Crew, AWDSECTION Diagnostic Test

VERIFY THE DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, clear all DTCs.
3. Turn the Left Turn Signal on.
4. 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.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
ATTEMPT TO SET THE OPPOSITE DTC
1. Turn the Left Turn Signal off.
2. Turn the ignition off.
3. Remove the Left Trailer Tow Stop Lamp Relay.
4. Turn the ignition on and wait 10 seconds.
5. With the scan tool, read DTCs.
  Does the scan tool display DTC: B17AD-14-REAR LEFT TRAILER TURN LAMP CONTROL - CIRCUIT SHORT TO GROUND OR OPEN?
  
  Yes
  - Replace the Left Trailer Tow Stop Lamp Relay.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
CHECK THE (L655) LEFT REAR TURN SIGNAL CONTROL CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS
1. Turn the ignition off.
2. Disconnect the BCM F harness connector.
3. Turn the ignition on.
4. Measure the voltage between ground and the (L655) Left Rear Turn Signal Control circuit at the Left Trailer Tow Stop Lamp Relay harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (L655) Left Rear Turn Signal Control circuit.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 4
INSPECT RELATED WIRING AND CHECK FOR TSBS
1. Turn the ignition off.
2. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Left Trailer Tow Stop Lamp Relay and the BCM.
3. Look for any chafed, pierced, pinched, or partially broken wires.
4. Look for broken, bent, pushed out or corroded terminals.
5. Perform any Technical Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the BCM in accordance with the Service Information. Refer to MODULE, BODY CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.