Heated Seat Module (HSM)

B210E-BATTERY VOLTAGE HIGH





For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

- When Monitored:
With ignition on.

- Set Condition:
This code will set if the Heated Seat Module (HSM) detects voltage over 15.0 volts on the (A940) Fused B(+) circuit.





1. CHECK FOR CHARGING SYSTEM DTCs
1. Turn the ignition on.
2. With the scan tool, read Powertrain Control Module (PCM) DTCs.

Are there any Charging System DTCs set in the PCM?

Yes

- Testing and Inspection for Charging System diagnostic procedures.

No

- Go To 2

2. VERIFY DTC B210E-BATTERY VOLTAGE HIGH IS ACTIVE
1. With the scan tool, record and erase DTCs.
2. Turn the ignition switch Off.
3. Start the engine and let run for one minute.
4. With the scan tool, read DTCs.

Does DTC B210E-BATTERY VOLTAGE HIGH 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 the BODY VERIFICATION TEST. Body Verification Test.

3. CHECK (A940) FUSED B(+) CIRCUIT VOLTAGE




1. Turn the ignition off.
2. Disconnect the HSM connector.

NOTE: Check connectors - Clean and repair as necessary.

3. Start the engine and let idle.
4. Measure the voltage of the (A940) Fused B(+) circuit between the HSM connector and ground and compare it to voltage at the vehicles battery.

Is the voltage measured at the HSM connector the same as the voltage measured at the battery?

Yes

- Replace the Heated Seat Module (HSM).
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the (A940) Fused B(+) circuit for the cause of the high voltage condition at the HSM.
- Perform the BODY VERIFICATION TEST. Body Verification Test.