2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 230

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 230

SIR Schematics (See: Diagrams/Electrical Diagrams/Air Bag Systems)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

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)

* 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)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* 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.

Circuit/System Testing

Important: Refer to SIR Service Precautions (See: Restraints and Safety Systems/Air Bag Systems/Service Precautions/Technician

Safety Information).

When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of

the affected component/connector:

* Front end sensor

* SDM module

* Front end sensor wiring harness connector

* SDM wiring harness connector

1. Ignition OFF, disconnect the harness connector at the appropriate sensor.

2. Disconnect the harness connector at the SDM.

3. Ignition ON, test for less than 1 volt between the following signal circuit and ground.

* Right front end sensor terminal 1

* Left front end sensor terminal 1

* Right front side impact sensor terminal B

* Left front side impact sensor terminal B

* Right rear side impact sensor terminal B

* Left rear side impact sensor terminal B

瀚慖f greater than the specified range, test the circuit for a short to voltage.

4. Ignition ON, test for less than 1 volt between the low reference circuit and ground.

* Right front end sensor terminal 2

* Left front end sensor terminal 2

* Right front side impact sensor terminal A

* Left front side impact sensor terminal A

* Right rear side impact sensor terminal A

* Left rear side impact sensor terminal A

瀚慖f greater than the specified range, test the circuit for a short to voltage.

5. Test for infinite resistance between the signal circuit and ground.

* Right front end sensor terminal 1

* Left front end sensor terminal 1

* Right front side impact sensor terminal B

* Left front side impact sensor terminal B

* Right rear side impact sensor terminal B