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 B1795: Passenger Presence System Sensor CircuitCircuit/System Description
This DTC identifies a malfunction within the passenger presence system (PPS) module. If the sensing and diagnostic module (SDM) detects a malfunction within the PPS module, a DTC will be set.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
The SDM detects a PPS module malfunction.
Action Taken When the DTC Sets
| • | The SDM commands the AIR BAG indicator ON. |
| • | The SIR System is disabled and no deployments are allowed. |
Conditions for Clearing the DTC
| • | The condition for setting the DTC no longer exists. |
| • | A history DTC will clear once 100 malfunction-free ignition cycles have occurred. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
SIR System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information.
Circuit/System Testing
Note: Refer to SIR Service Precautions.
When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector:| • | The front end sensor |
| • | The SDM module |
| • | The front end sensor wiring harness connector |
| • | The SDM wiring harness connector |
Connect all SIR components. Ignition ON, with a scan tool clear and check for DTCs.
| ⇒ | If the DTC returns and is current, replace the occupant classification module. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for SDM replacement, setup, and programming |
