CLIMATE CONTROLLED SEAT MODULE (CCSM) DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC	Description	Source	Perform Test
B1342	ECU Is Faulted	CCSM	INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to CLIMATE CONTROLLED SEAT MODULE .
B1358	Ignition Switch or Blower Electronics Circuit Short to Ground	CCSM	GO to PINPOINT TEST J .
B2477	Module Configuration Error	CCSM	This DTC indicates programmable module installation (PMI) has not been done to a newly installed module. CARRY OUT PMI. REFER to MODULE CONFIGURATION . CLEAR the DTC. CARRY OUT the self-test.
B2486	Climate Controlled Seat Module Voltage Out of Range	CCSM	CHECK circuit 1554 (WH) for a fault and REPAIR as needed. If okay, REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B2521	Tach Circuit Failure	CCSM	GO to PINPOINT TEST J .
B2729	Cushion Overtemp Detected	CCSM	For driver CCSM, GO to PINPOINT TEST K . For passenger CCSM, GO to PINPOINT TEST L .
B2730	Back Overtemp Detected	CCSM	For driver CCSM, GO to PINPOINT TEST K . For passenger CCSM, GO to PINPOINT TEST L .
B2731	Differential Temperature Fault	CCSM	For driver CCSM, GO to PINPOINT TEST K . For passenger CCSM, GO to PINPOINT TEST L .
U2362	UBP Invalid Data Node ID	CCSM	NOTE: DTC U2362 indicates a network concern, the CCSM is not the source of the fault. CONFIGURE the CCSM. CLEAR the DTC. If the DTC does not clear, CONFIGURE the CCSM once again. CLEAR the DTC. If the DTC does not clear, REFER to MODULE CONFIGURATION .

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.

Safety Warning

Climate Controlled Seat Module (CCSM)