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Home >> Pontiac >> 1993 >> Bonneville SE >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Air Bag Restraint System - SSE & SSEI >> Diagnostic Charts >> Code 21 - Driver Initiator Circuit Resistance High >> Action Taken

Action Taken

DERM turns on INFLATABLE RESTRAINT indicator light.

NOTE: Test numbers refer to test numbers on diagnostic chart. For circuit number identification, see WIRING DIAGRAMS.
WARNING: To avoid air bag deployment while troubleshooting the SIR system, only use test equipment specified in diagnostic charts. Under no circumstances should battery powered test equipment or test light be used. Carefully follow all instructions.
  1. Checks if fault is in steering column.
  2. Checks for open in DRIVER SENSE HIGH circuit between DERM and steering column connector.
  3. Checks for proper terminal contact at DERM and steering column connectors.
  4. Checks to ensure an improperly mated connector did not cause code to set.
  5. Checks if fault is in driver inflator module or SIR coil.
Fig 1: Code 21 - Driver Initiator Circuit Resistance High
G93A75028Courtesy of GENERAL MOTORS CORP.
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