B2181- HEATED SEAT MODULE POWER SUPPLY LOW





For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    During heated seat operation.

  • Set Condition:

    This code is set immediately if the Heated Seat Module detects voltage under 10 volts on the (F937) Fused Ignition Switch Output (Run) circuit.


Possible Causes
  
(F937) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT HIGH RESISTANCE
  
HEATED SEAT MODULE
  



Diagnostic Test

1.CHECK PCM FOR CHARGING SYSTEM DTC



Are there any Charging System DTC's set in the Powertrain Control Module?

Yes
  • (Refer to 8 - ELECTRICAL/CHARGING - DIAGNOSIS AND TESTING) for Charging System diagnostic procedures.


No

2.VERIFY THAT DTC B2181 - HEATED SEAT MODULE POWER SUPPLY LOW IS ACTIVE





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 – VER 1. (Refer to BODY VERIFICATION TEST - VER 1).

3.(F937) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT HIGH RESISTANCE




NOTE: Check connectors - Clean and repair as necessary.




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


No