• | 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. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
PPS Module Ignition | B0092, B1530 | B0092, B1530 | -- | -- |
PPS Module Serial Data Link | B0092, B0098, B1530 | B0092, B0098, B1530 | B0092, B0098, B1530 | B0092, B0098, B1530 |
PPS Module Ground | -- | B0092, B1530 | B0092, B1530 | -- |
When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM) performs tests to diagnose critical malfunctions within itself. When the SDM has completed the power-up mode, the SDM will establish communication with the passenger presence system (PPS). The PPS will respond by illuminating both the PASSENGER AIR BAG ON/OFF indicators for 5 seconds. The SDM will transmit a request message to the PPS to receive the PPS verification ID. The PPS will transmit the verification ID to the SDM and the SDM will compare the ID received to data stored in memory. The SDM will also set DTC B0092 to notify the driver that the PPS has a current malfunction present. When the SDM detects that the PPS has set any one of the following DTCs 023, 024, 063, 064, or 065, the SDM will disable the instrument panel (I/P) module deployment loop, set DTC B0092, and illuminate the AIR BAG indicator.
Ignition voltage is between 9-16 volts.
• | The PPS has a current fault. |
• | The SDM has not received the correct verification ID from the PPS. |
• | The SDM disables the I/P module deployment loop. |
• | The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator. |
• | The condition responsible for setting the DTC no longer exists. |
• | A history DTC will clear once 100 malfunction-free ignition cycles have occurred. |
Important: DTC B0092 will also set, if the PPS has a current malfunction, and has set any one of the following DTCs 023, 024, 064, or 065. The SDM will set DTC B0092 as current and command the AIR BAG indictor ON. This is done to notify the driver of any PPS malfunctions. When DTC B0092 is present, it is important to check the PPS for any current DTC. Refer to Passenger Presence System Flash Code Procedures. Any current PPS DTC must be diagnosed before performing this diagnostic procedure.
DTC B0092 is an indication that the SDM has received an incorrect PPS verification ID or has lost communication with the PPS. The SDM will continue to request the verification ID from the PPS for 5 seconds. If the SDM does not receive the correct verification ID from the PPS within 5 seconds, the SDM will set the DTC as current, illuminate the AIR BAG indicator, and disable the I/P module deployment loop.
SIR System Description and Operation
Control Module References for scan tool information
Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
• PPS module • SDM • PPS module wiring harness connector • SDM wiring harness connector
⇒ | If the inflatable restraint passenger air bag ON/OFF status indicators do not illuminate refer to. |
⇒ | If greater than the specified range, test the ground circuit for an open/high resistance |
⇒ | If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. |
⇒ | If less than the specified value, test the serial data link for a short to ground. |
⇒ | If greater than the specified range, test the serial data link for an open/high resistance. |
⇒ | If greater than the specified range, test the serial data link for a short to voltage. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for PPS replacement, setup, and programming |