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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1094 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0074 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector:
    • The PPS pressure sensor
    • The PPS module
    • The PPS pressure sensor wiring harness connector
    • The PPS module wiring harness connector
  1. Ignition OFF, disconnect the harness connector at the PPS.
  2. Test for less then 10 ohms between the ground circuit terminal D and ground.
    • If greater then the specified range, test the circuit for an open/high resistance.
  3. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal A and ground.
    • If the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. if circuit tests normal, replace the PPS.
  4. Reconnect all PPS components and perform the Passenger Presence System Rezeroing  procedure.
  5. Clear all DTCs and operate the vehicle within the conditions for running the DTC. DTC B0074 should not set.
    • If the DTC sets, replace the PPS.
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