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Home >> Saturn >> 2002 >> SC2 Automatic, MP6 >> Repair and Diagnosis >> External Pages >> Different car >> Section 18 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> DTC B0077, B0078, B0079, B0080, B0081, B0082: Driver-Side Sis Valid Identification Message Not Received/Passenger-Side Sis Valid Identification Message Not Received/Driver-Side Sis Identification Error/Driver-Side Sis NOK Message/Passenger-Side Sis Identification Error/Passenger-Side Sis NOK Message >> Diagnostic Procedure
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Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. 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. Using scan tool, request SIR DTC display. If DTC B0079, B0080, B0081 or B0082 is retrieved as a current DTC, go to step  10. If DTC B0079, B0080, B0081 or B0082 is not retrieved as a current DTC, go to next step.
  3. Turn ignition off. If DTC B0077 is current, disconnect driver-side SIS connector. See SIDE IMPACT SENSOR (SIS)  under DESCRIPTION & OPERATION. If DTC B0078 is current, disconnect passenger-side SIS connector. If connector is damaged or corroded, go to next step. If connector is okay, go to step  5.
  4. If SIS side of connector is damaged, replace SIS. Go to step  11. If harness side of connector is damaged, replace connector. See WIRE REPAIR . Go to step  11.
  5. Disconnect SDM connector. See Figure. If SDM connector or SDM terminals show signs of corrosion, poor connections or other damage, go to next step. If SDM connector and terminals are okay, go to step  7.
  6. If SDM connector is damaged, replace connector. See WIRE REPAIR . Go to step  11. If SDM terminals are damaged, go to step  12.
    NOTE: Use Digital Multimeter (J-39200) and Connector Test Adapter Kit (J-35616-A) or Flat Wire Probe Adapter Kit (J-42675) when performing electrical tests.
  7. If DTC B0077 is current, disconnect driver-side SIS connector. If DTC B0078 is current, disconnect passenger-side SIS connector. Test high-side and low-side circuits of applicable SIS for an open or high resistance. If an open or high resistance is found and corrected, go to step  11. If an open or high resistance is not found, go to next step.
  8. Inspect applicable SIS circuits for a short between high-side and low-side circuits. If short is found and corrected, go to step  11. If short is not found, go to next step.
  9. Turn ignition on. Check applicable SIS circuits for a short to voltage. If short to voltage is found and corrected, go to step  11. If short to voltage is not found, go to next step.
  10. If DTC B0077, B0079 or B0080 was displayed by scan tool, replace driver-side SIS. Go to next step. If DTC B0078, B0081 or B0082 was displayed by scan tool, replace passenger-side SIS. Go to next step.
  11. Using scan tool, clear all SIR DTC's. Road test vehicle, then check for DTC's. If DTC's are retrieved, go to next step. If DTC's are not retrieved, system is normal.
  12. Replace SDM. See SENSING & DIAGNOSTIC MODULE (SDM)  under REMOVAL & INSTALLATION. Go to next step.
  13. Using scan tool, clear all SIR DTC's. Road test vehicle, then check for DTC's. If DTC is retrieved, go to step  2. If DTC is not retrieved, system is normal.
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