Action Taken

WARNING: This page is about a different car, the 1991 Geo Storm, 1991 Geo Metro, 1990 Geo Storm, and 1990 Geo Metro. However, it is still accessible from the selected car via links, so may be relevant.

DERM turns on INFLATABLE RESTRAINT indicator light.

NOTE: Test numbers refer to test numbers on diagnostic chart. For circuit number identification, see WIRING DIAGRAMS .

Checks for open in FORCE HI wiring.
Checks for open 50-ohm resistor in resistor module.
Checks for proper values in resistor module.
Checks for short in resistor module wiring harness.

Fig 1: Code 21 & 22 Both Current, Steering Column Resistance Undetermined

Courtesy of GENERAL MOTORS CORP.