B0092

DTC B0092

CIRCUIT DESCRIPTION
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 commanding both the PASSENGER AIR BAG ON/OFF indicators located on the instrument panel ON 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 command the AIR BAG indicator ON. For more detailed information concerning class 2 serial data lines, refer to Data Link Communications Description and Operation.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC B0092 Passenger Presence System Performance

CONDITIONS FOR RUNNING THE DTC
Ignition 1 voltage is within the normal operating voltage range.

ACTION TAKEN WHEN THE DTC SETS
- The SDM disables the I/P module deployment loop.
- The SDM commands the AIR BAG indicator ON via class 2 serial data.

CONDITIONS FOR CLEARING THE DTC
- The condition responsible for setting the DTC no longer exists.
- You issue a scan tool CLEAR DTCs command.
- A history DTC will clear once 255 malfunction-free ignition cycles have occurred.

DIAGNOSTIC AIDS

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 DTCs. Refer to Passenger Presence System Flash Code Procedures. If the PPS has any current DTCs address these before performing this DTC chart. Component Tests and General Diagnostics

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.

TEST DESCRIPTION

Step 1 - Step 9:

The numbers below refer to the step numbers on the diagnostic table.
2. This step checks the PPS for any current or history DTCs.
3. This step inspects the PPS module connector.
4. This step inspects the main seat harness connector.
5. This step tests the PPS ground circuit for an open or high resistance.
6. This step tests the PPS ignition 1 voltage circuit for a short to ground, an open, or high resistance.
7. This step tests the PPS ground circuit for a short to voltage.