Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.

CHECK IF THE DTC IS ACTIVE
NOTE:
Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.
1. Turn the ignition on.
2. With the scan tool, read the module status.
  NOTE:
  Check the Body Control Module (BCM) for any active CAN hardware DTCs and perform the appropriate diagnostic procedure before proceeding. Refer to the DTC INDEX article.
  
  Does the scan tool indicate that the module is active on the bus?
  
  Yes
  - The no response condition is 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.
  No
  - Go To 2
CHECK THE (F921) FUSED IGNITION RUN CONTROL OUTPUT CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the Heated Seat Module C1 harness connector.
3. Turn the ignition on.
4. Using a 12-volt test light connected to ground, check the (F921) Fused Ignition Run Control Output circuit.
  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 (F921) Fused Ignition Run Control Output circuit for an open or excessive resistance.
    NOTE:
    If the fuse is open, make sure to check for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (Z919) GROUND CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Using a 12-volt test light connected to 12-volts, check the (Z919) Ground circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 4
  No
  - Repair the open in the (Z919) Ground circuit.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (D164) AND (D163) CAN IHS BUS CIRCUITS FOR AN OPEN
1. Disconnect the Star CAN IHS IP harness connector.
2. Measure the resistance of the (D164) CAN IHS(-) circuit between the Star CAN IHS IP harness connector and the Heated Seat Module C1 harness connector.
3. Measure the resistance of the (D163) CAN IHS(+) circuit between the Star CAN IHS IP harness connector and the Heated Seat Module C1 harness connector.
  Are both measurements below 5.0 Ohms?
  
  Yes
  - Replace the Heated Seat Module in accordance with the Service Information. Refer to MODULE, HEATED SEAT, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the CAN IHS Bus circuit(s) for an open or excessive resistance.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .