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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 (2 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. 4)  Checks integrity of 100-ohm resistor and associated circuitry in resistor module.
  2. 5)  Checks integrity of SENSE LOW 2490-ohm resistor and associated circuitry in resistor module.
  3. 6)  Checks for a short from FORCE HIGH circuit No. 714 to SENSE HIGH circuit No. 753.
  4. 7)  Checks whether fault is due to a short to voltage in SENSE HIGH circuit in SENSE HIGH circuit No. 753 or a faulty DERM.
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 (2 of 2)
G92F24708Courtesy of GENERAL MOTORS CORP.