The inflatable restraint I/P module disable switch is ignition key operated to manually enable or disable the inflatable restraint I/P module. When the ignition is turned ON, ignition 1 voltage is supplied to the inflatable restraint I/P module disable switch and based on the position of the switch either the I/P module disable switch signal circuit (ON) or the I/P module suppression indicator control (OFF) circuit will be active to the inflatable restraint sensing and diagnostic module (SDM). The SDM will communicate to the instrument panel cluster (IPC) to illuminate the appropriate the ON/OFF indicator as well as enable or disable the deployment of the I/P module. If a malfunction is detected, a DTC will be stored.

Ignition 1 voltage is between 9-16 volts.

The SDM detects both the I/P module disable switch signal circuit (ON) and the I/P module suppression indicator control (OFF) circuit active or inactive for 500 milliseconds.

The SDM requests the IPC to illuminate the AIRBAG indicator.

Schematic Reference

SIR Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

SIR System Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

Important: When removing the connectors inspect for damage or corrosion. Damage or corrosion to the following requires repair or replacement of the affected component/connector:

•	Inflatable restraint I/P module disable switch

•

SDM

•	Inflatable restraint I/P module wiring harness connector

•	SDM wiring harness connector

1. Ignition OFF, disconnect the harness connector at the inflatable restraint I/P module disable switch.
2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal B and ground.

⇒	If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance, if the circuit tests normal and the ignition fuse is open, test or replace the inflatable restraint I/P module disable switch.

3. Verify that a test lamp illuminates between the I/P module disable switch signal control circuit terminal E and B+.

⇒	If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the SDM.

4. Verify that a test lamp illuminates between the I/P module suppression indicator control (OFF) circuit terminal A and B+.
5. If all circuits test normal, test or replace the inflatable restraint I/P module disable switch.

1. Ignition OFF, disconnect the harness connector at the inflatable restraint I/P module disable switch.
2. Test for infinite resistance between the signal circuit terminal A and the signal circuit terminal E.

⇒	If less than the specified value, inflatable restraint I/P module disable switch.

3. With the inflatable restraint I/P module disable switch select the OFF position.
4. Test for 90-110 ohms between the ignition circuit terminal B and signal circuit terminal E.

⇒	If not the specified range, replace the inflatable restraint I/P module disable switch.

5. With the inflatable restraint I/P module disable switch select the ON position.
6. Test for 3.9k-3.2k ohms between the ignition circuit terminal B and signal circuit terminal A.

⇒	If not the specified range, replace the inflatable restraint I/P module disable switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.