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Home >> Pontiac >> 1993 >> Bonneville SE >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Air Bag Restraint System - Except SSE & SSEI >> Diagnostic Charts >> Codes 21 & 22 Both Current - Steering Column Resistance Undetermined >> Action Taken

Action Taken

Diagnostic Energy Reserve Module (DERM) turns on INFLATABLE RESTRAINT indicator light.

NOTE: Test numbers refer to numbers on diagnostic chart. For circuit number identification, see WIRING DIAGRAMS.
WARNING: To avoid air bag deployment while trouble shooting 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 for open in FORCE HIGH wiring.
  2. Checks for open 50-ohm resistor in resistor module.
  3. Checks for correct values in resistor module.
  4. Checks for a short in resistor module wiring harness.
  5. Checks for a short in resistor module wiring harness.
Fig 1: Code 21 & 22 - Steering Column Resistance Too Undetermined
G92G24329Courtesy of GENERAL MOTORS CORP.