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Home >> Geo >> 1993 >> Storm Base, Standard >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> Air Bag Restraint System >> Diagnostic Charts >> Code 21, Steering Column Resistance Too High (1 Of 2) >> 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.
  1. Checks whether fault is in steering column or diagnostic circuitry.
  2. Checks integrity of 430-ohm resistor and associated circuitry in resistor module.
  3. Checks whether steering column fault is due to SIR coil assembly or inflator module.
WARNING: To avoid air bag deployment and injury when trouble shooting system, only use test equipment specified in diagnostic charts.
Fig 1: Code 21 Flowchart - Steering Column Resis. Too High (1 of 2)
G92E24707Courtesy of GENERAL MOTORS CORP.