LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 453 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> DTC B1141: Driver-Side Sis Malfunction >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
  1. If SIR Diagnostic System Check has been performed, go to next step. If SIR Diagnostic System Check has not been performed, go to SIR DIAGNOSTIC SYSTEM CHECK .
  2. If DTC B1141 is retrieved as a current DTC, go to next step. If DTC B1141 is not retrieved as a current DTC, go to DIAGNOSTIC AIDS .
  3. Disconnect SIS connector. See SIDE IMPACT SENSOR (SIS)  under REMOVAL & INSTALLATION. If SIS side of connector is damaged, replace SIS. Go to step  9. If harness side of connector is damaged, replace connector. See WIRE REPAIR . Go to step  9.
  4. Disconnect SDM connector. See Figure. If SDM connector shows signs of corrosion, poor connections or other damage, replace SDM connector. See WIRE REPAIR . Go to step  9. If SDM connector is okay, go to next step.
    NOTE: Use Digital Multimeter (J-39200) and Flat WIre Probe Adapter Kit (J-42675) when performing electrical tests.
  5. Test driver-side SIS high-side and low-side circuits for an open or high resistance and a short to ground or voltage. See WIRE REPAIR . If condition is found and corrected, go to step  9. If condition is not found, go to next step.
  6. Replace driver-side SIS. Go to step  9.
  7. Reconnect all SIR components. Using scan tool, clear SIR DTC's. Road test vehicle, then retrieve DTC's. If DTC is retrieved, go to next step. If DTC is not retrieved, system is normal.
  8. Replace SDM. See SENSING & DIAGNOSTIC MODULE (SDM)  under REMOVAL & INSTALLATION. Go to next step.
  9. Reconnect all SIR components. Using scan tool, clear all SIR DTC's. Road test vehicle, then check for DTC's. If DTC's are retrieved, go to step  2. If DTC's are not retrieved, system is normal.
scientia non olet · About LEMON Manuals