For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptors
DTC B1395 02: Device Voltage Reference Output Circuit Short to GroundDTC B1395 05: Device Voltage Reference Output Circuit Short to Battery or Open
Description
This diagnostic applies to internal microprocessor integrity conditions within the HSM (HSM).
Conditions for Running the DTC
The HSM must be powered.
Conditions for Setting the DTC
The voltage sensing calibration data is out of range.
Action Taken When the DTC Sets
The heated seat function for both front seats will be disabled.
Conditions for Clearing the DTC
| • | The current DTC clears when the malfunction is no longer present and the power mode changes to OFF then back to RUN or ACC. |
| • | The history DTC will clear after 50 consecutive fault-free ignition cycles have occurred. |
Reference Information
Schematic Reference
Connector End View Reference
Heated/Cooled Seat Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Verification
If either DTC is set history or current, replace the HSM.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for HSM replacement, programming and setup
