DTC B1A35

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 B1A35 Automatic Occupant Sensing Module Circuit/System Description When the ignition is turned ON, the K85P Restraints Occupant Classification Module performs self tests to diagnose critical malfunctions. If the K85P Restraints Occupant Classification Module detects a fault within the Occupant Classification system, the K85P Restraints Occupant Classification Module will notify the K36 Restraints Control Module via serial data of the fault status. When the K36 Restraints Control Module is notified of a fault in the K85P Restraints Occupant Classification System Module, the K36 Restraints Control Module will set DTC B1A35 and illuminate the AIRBAG indicator. Conditions for Running the DTC Ignition voltage is between 9–16 V. Conditions for Setting the DTC Any of the following conditions must exist B1A35 00 The K85P Restraints Occupant Classification System Module is currently reporting a fault present message to the K36 Restraints Control Module. Action Taken When the DTC Sets The K36 Restraints Control Module requests the instrument cluster to illuminate the AIRBAG indicator. The passenger instrument panel airbag and passenger knee airbag deployment loops may have reduced performance or be disabled. The passenger Seat Belt Reminder function may be disabled. Conditions for Clearing the DTC The K85P Restraints Occupant Classification System Module is no longer reporting a fault present message to the K36 Restraints Control Module. The condition for setting the DTC in the K85P Restraints Occupant Classification Module no longer exists. A history DTC will clear once 100 malfunction-free ignition cycles have occurred. Diagnostic Aids This DTC only indicated that there is a current fault in the K85P Restraints Occupant Classification System. Never replace the SDM if this DTC is set. Diagnose the K85P Restraints Occupant Classification System to determine why it is reporting a fault to the K36  Restraints Control Module. Reference Information Description and Operation Supplemental Inflatable Restraint System Description and Operation Scan Tool Reference Control Module References for scan tool information Circuit/System Verification

Note

Perform a Restraints Occupant Classification System Module Programming and Setup procedure whenever the seat trim is removed or the component is replaced.

1. Verify that DTC B1A35 is not set in the K36 Restraints Control Module. ⇒ If other DTCs are set in the K36 Restraints Control Module Refer to: Diagnostic Trouble Code (DTC) List - Vehicle ⇓ If no other DTCs are set in the K36 Restraints Control Module
2. Diagnose and Repair the cause of DTCs within the K85P Restraints Occupant Classification System. Do not replace K36 Restraints Control Module if this DTC is current.
3. Perform all necessary programming and setup procedures for the K85P Restraints Occupant Classification System Module - Passenger.
4. Verify no other DTCs related to the K36 Restraints Control Module are set. ⇒ If the DTC still sets 4.1. Replace the K85P Restraints Occupant Classification System Module - Passenger. 4.2. Verify the DTC does not set. ⇓ If the DTC does not set. 4.3. All OK. ⇓ If the DTC does not set
5. All OK. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair. K85P Restraints Occupant Classification System Module - Passenger: Programming and Setup for Restraints Occupant Classification Module/sensor setup Airbag Front Passenger Presence Module Replacement for Restraints Occupant Classification Module replacement