B1788

DTC B1788

CIRCUIT DESCRIPTION
The passenger presence system (PPS) sensor - left rear circuit consists of the PPS sensor - right rear and the PPS module. The PPS module monitors the PPS sensor - right rear. If the sensing and diagnostic module (SDM) detects the PPS module has received a collision detection signal, a DTC will be set.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC B1788 Passenger Presence System Collision Detected - Right Rear

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

CONDITIONS FOR SETTING THE DTC
The SDM detects the PPS module has received a collision detection signal.

ACTION TAKEN WHEN THE DTC SETS
The SDM commands the AIR BAG indicator ON.

CONDITIONS FOR CLEARING THE DTC
The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.

DIAGNOSTIC AIDS
Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction.

The following are possible causes of the malfunction:
- PPS not properly calibrated
- A malfunctioning PPS sensor - right rear
- An internal PPS module malfunction

If an intermittent malfunction exists, refer to Diagnostic Aids for Circuit Testing and Wiring Repair procedures.

TEST DESCRIPTION

Steps 1 - 7:

The numbers below refer to the step numbers on the diagnostic table.
3. This step tests to see if the malfunction is caused by the PPS calibration.
4. This step tests to see if the malfunction is caused by the PPS sensor - right rear.