Diagnostic Test

WARNING: This page is about a different car, the 2013 Dodge Avenger and 2013 Chrysler 200. However, it is still accessible from the selected car via links, so may be relevant.

CHECK PCM FOR CHARGING SYSTEM DTC
1. With the scan tool, read Powertrain Control Module DTCs.
  Are there any Charging System DTCs set in the PCM?
  
  Yes
  - Refer to DTC INDEX and DIAGNOSIS AND TESTING for Charging System diagnostic procedures .
  No
  - Go To 2
VERIFY THAT DTC B2181-HEATED SEAT MODULE POWER SUPPLY LOW IS ACTIVE
1. With the scan tool, record and erase DTCs.
2. Turn the ignition switch to the Off position then start the engine and operate the heated seats for one minute.
3. With the scan tool, read DTCs.
  Does the DTC B2181-HEATED SEAT MODULE POWER SUPPLY LOW reset?
  
  Yes
  - Go To 3
  No
  - The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
  - Perform BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
(F937) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT HIGH RESISTANCE

Fig 1: Checking Fused Ignition Switch Output (Run) Circuit For High Resistance
Courtesy of CHRYSLER GROUP, LLC
1. Disconnect the Heated Seat Module connector.
  NOTE:
  Check connectors - Clean and repair as necessary.
2. Start the engine and let idle.
3. Using a 12-volt test light connected to ground, check the (F937) Fused Ignition Switch Output (Run) circuit at the HSM 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
  - Replace the Heated Seat Module in accordance with the Service Information.
  - Perform BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the (F937) Fused Ignition Switch Output (Run) circuit as necessary.
  - Perform BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .