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 RAM2016CHARGER R/TREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCRUISE CONTROL SYSTEMS(ACTIVE CRUISE CONTROL (ACC) MODULE - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGU1215-00-LOST COMMUNICATION WITH FORWARD FACING CAMERADIAGNOSTIC TEST

2016 Dodge and Ram Charger R/T

Diagnostic Test

2016 Dodge and Ram Charger R/TSECTION Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read Adaptive Cruise Control (ACC) DTCs Module DTCs and record on the repair order.
2. With the scan tool, erase ACC Module DTCs.
3. Turn the ignition off.
4. Turn the ignition on.
5. With the scan tool, read ACC Module DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Go To 9
CHECK THE (F924) FUSED IGNITION (RUN) CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the Forward Facing Camera Module (FFCM) harness connector.
3. Start the Engine.
4. With a 12-volt test light connected to ground, check the (F924) Fused Ignition (Run) circuit at the FFCM harness connector.
  NOTE:
  The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly?
  
  Yes
  - Go To 3
  No
  - Repair the (F924) Fused Ignition (Run) circuit for an open or high resistance.
    NOTE:
    If the fuse is open, make sure to check for a short to ground.
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (Z911) GROUND CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. With a 12-volt test light connected to 12 volts, check the (Z911) Ground circuit at the FFCM harness connector.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 4
  No
  - Repair the (Z911) Ground circuit for an open or high resistance.
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (D449) CAN C(+) AND (D448) CAN C(-) CIRCUITS FOR A SHORT TO GROUND
1. Disconnect the Adaptive Cruise Control (ACC) Module harness connector.
2. Check for continuity between ground and the and both (D449) CAN C (+) and (D448) CAN C(-) circuits at the FFCM harness connector.
  Is there continuity between ground and either the (D449) CAN C (+) or the (D448) CAN C(-) circuit?
  
  Yes
  - Repair the (D449) CAN C (+) and/or the (D448) CAN C(-) circuit(s) for a short to ground.
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 5
CHECK THE (D449) CAN C(+) AND D448 CAN C(-) CIRCUITS FOR AN OPEN
1. Measure the resistance of both (D449) CAN C (+) and (D448) CAN C(-) circuits between the ACC Module harness connector and the FFCM harness connector.
  Is the resistance below 1.0 Ohm on both circuits?
  
  Yes
  - Go To 6
  No
  - Repair the (D449) CAN C (+) and/or the (D448) CAN C(-) circuit(s) for an open or high resistance.
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (D449) CAN C(+) CIRCUIT FOR A SHORT TO THE D448 CAN C(-) CIRCUIT
1. Measure the continuity between the (D449) CAN C (+) and (D448) CAN C(-) circuit at the ACC Module harness connector.
  Is there continuity between the (D449) CAN C (+) and (D448) CAN C(-) circuit?
  
  Yes
  - Repair the (D449) CAN C (+) circuit for a short to the (D448) CAN C(-) circuit.
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 7
CHECK THE (D449) CAN C(+) AND D448 CAN C(-) CIRCUITS FOR A SHORT TO VOLTAGE
1. Turn the ignition on.
2. Measure the voltage of both the (D449) CAN C (+) and (D448) CAN C(-) circuits at the ACC Module harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (D449) CAN C (+) and/or the (D448) CAN C(-) circuit(s) for a short to voltage.
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 8
FORWARD FACING CAMERA
1. Replace and program/align the Forward Facing Camera Module (FFCM) in accordance with the Service Information. Refer to MODULE, FORWARD FACING CAMERA, REMOVAL .
2. Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  Did the DTC return?
  
  Yes
  - If this DTC resets after replacement of the Forward Facing Camera and no other problems are found, replace and program the Adaptive Cruise Control (ACC) Module in accordance with the Service Information. Refer to MODULE, ADAPTIVE CRUISE CONTROL, REMOVAL .
  No
  - Test Complete.
CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set the DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this Module. Wiggle the wiring and connectors while checking for shorted and open circuits.
3. Check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
4. Check Service Bulletins for any possible causes that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Test complete.

RENDER: 1.0x

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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.