2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 96
Description and Operation
SIR System Description and Operation (See: Restraints and Safety Systems/Air Bag Systems/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
J 38715-A SIR Driver/Passenger Load Tool
Circuit/System Testing
Important: When removing connectors inspect for damage, corrosion or poor connection. Damage or corrosion to the following requires
repair or replacement of the affected component/connector:
* Driver steering wheel air bag
* SDM module
* Driver steering wheel air bag wiring harness connector
* SDM wiring harness connector
The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with
an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate
properly.
1. Verify that the driver steering wheel air bag connector and CPA are engaged.
瀚慖f the above condition is not found, make the appropriate repair.
2. Ignition OFF, disconnect the harness connector at the driver steering wheel air bag.
3. With the appropriate load tool adaptor, connect J 38715-A in place of the driver steering wheel air bag.
4. Ignition ON, with a scan tool, verify the appropriate DTC is set as current.
瀚慖f the DTC is not set or is set as history, cycle ignition OFF, disconnect the adapter and J 38715-A, reconnect the harness connector at the
driver steering wheel air bag, and cycle the ignition ON. If the DTC resets after reconnecting the air bag, then replace the driver steering
wheel air bag.
5. Ignition OFF, disconnect J 38715-A and the adaptor.
6. Disconnect the driver steering wheel air bag coil in-line connector.
7. With the appropriate load tool adaptor, connect special tool J 38715-A.
8. Ignition ON, with a scan tool, verify DTC is set as current.
瀚慖f DTC is not set or is set as history, replace the driver steering wheel air bag coil.
9. Ignition OFF, disconnect special tool J 38715-A and the adaptor.
10. Disconnect the harness connector at the SDM.
11. Ignition ON, test for less than 1 volt between the high circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1
* Driver steering wheel air bag coil connector Stage 2 terminal A X2
瀚慖f greater than the specified range, test the circuit for a short to voltage.
12. Test for less than 1 volt between the low circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal B X1
* Driver steering wheel air bag coil connector Stage 2 terminal B X2
