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Home >> Hummer >> 2008 >> H3 Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 484 (Programming And Setup - All Systems) >> Repair Instructions >> Passenger Presence System Programming and Setup >> Passenger Presence System Preload Test Procedure
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Passenger Presence System Preload Test Procedure

WARNING: This page is about a different car, the 2010 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • Before checking for preload in the PPS, the front passenger seat must be completely empty of all items. The presence of any items on the front passenger seat will affect this procedure.
  • When the sensing and diagnostic module (SDM) starts to communicate with the PPS, the instrument panel cluster (IPC) and dash lights will begin dimming on and off. This is normal operation during this procedure and does not indicate additional system faults.
  1. Empty the front outboard passenger seat.
    2. IMPORTANT: If preload DTCs are set in the PPS, the SDM will set DTC B0081 when the ignition is turned ON. This code must be cleared with the ignition OFF before continuing with the preload test by doing the following:
    1. Switch the ignition to the OFF position.
    2. Disconnect the scan tool for 60 seconds.
    3. Ignition OFF, connect scan tool and clear SIR DTCs.
  2. Verify no PPS or SIR DTCs exist except for preload. If any current codes are set except preload DTCs, diagnose those DTCs first.
    3. IMPORTANT:
    • During the preload test the scan tool will ask if both passenger air bag indicators are illuminated. The passenger air bag indicators will only illuminate for 5 seconds.
    • When the preload test completes, the scan tool may display Unable to Clear DTCs. If this message is displayed, restart the preload test from the beginning. This message does not directly indicate that a preload or module failure exists.
  3. With a scan tool, command the preload test procedure and follow the on screen instructions.
  4. If the scan tool displays Test Failed, request PPS DTCs. Refer to Passenger Presence System Displaying Code Procedure (Base) .
  5. If DTC 1052-1055 is present, adjust the seat bottom trim cover and massage the seat cushion to ensure no unwanted pressure is present and restart the preload test.
  6. When no preload DTCs are found in the PPS then clear all history DTCs in both the PPS and the SIR systems.
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