Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the
connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the
malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions
and Poor Connections .
Test Description
The numbers below refer to the step numbers on the diagnostic table.
5: Tests if the malfunction is caused by the steering wheel module or by the steering wheel
module coil.
7: Determines which DTCs are present. If DTC B0022 or B0042 is present, test the steering
wheel module for a short between high and low circuits in stage 1 or stage 2. If DTC B0024
or B0043 is present, test the steering wheel module high and low circuits for an open and
for high resistance in stage 1 or stage 2. If DTC B0026 or B0044 is present, test the steering
wheel module high and low circuits for an open and for high resistance in stage 1 or stage 2.
DTC B0022, B0024, B0026, B0042, B0043 or B0044
Step
Action
Yes
No
Schematic Reference: SIR Schematics
Connector End View Reference: SIR Connector End Views
1
Did you perform a Diagnostic System
Check - Vehicle?
Go to Step 2
Go to Diagnostic
System Check -
Vehicle
2
1. Turn OFF the ignition.
2. Disconnect the steering wheel module
coil in-line connector. Refer to
Inflatable Restraint Steering Wheel
Module Coil Replacement.
3. Inspect the component and harness
sides of the in-line connector for the
steering wheel module coil for damage
or corrosion that may cause the
malfunction. Refer to Testing for
Intermittent Conditions and Poor
Connections and Connector
Repairs .
Does connector exhibit any signs of damage
2007 Hummer H3
2007 RESTRAINTS Supplemental Inflatable Restraints - H3