Thursday, November 7, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 12


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.



锟斤拷 If 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



锟斤拷 If 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



锟斤拷 If greater than the specified range, test the circuit for a short to voltage.



13. Ignition OFF, test for infinite resistance 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



锟斤拷 If less than the specified value, test the circuit for a short to ground.



14. Test for infinite resistance 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



锟斤拷 If less than the specified value, test the circuit for a short to ground.



15. Test for less then 1 ohm between the SDM connector and the air bag connector high circuit terminals listed below.



* Driver steering wheel air bag coil connector Stage 1 terminal A X1 and SDM terminal 4 X1.



* Driver steering wheel air bag coil connector Stage 2 terminal A X2 and SDM terminal 1 X1.



锟斤拷 If greater than the specified range, test the circuit for an open/high resistance.



16. Test for less then 1 ohm between the SDM connector and the air bag connector low circuit terminals listed below.



* Driver steering wheel air bag coil connector Stage 1 terminal B X1 and SDM terminal 3 X1



* Driver steering wheel air bag coil connector Stage 2 terminal B X2 and SDM terminal 2 X1



锟斤拷 If greater than the specified range, test the circuit for an open/high resistance.



17. If all circuits test normal, replace the SDM.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Steering Wheel Inflatable Restraint Module Coil Replacement (See: Restraints and Safety Systems/Air Bag Systems/Clockspring Assembly /



Spiral Cable/Service and Repair/Removal and Replacement)



* Steering Wheel Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and



Repair/Removal and Replacement/Steering Wheel Inflatable Restraint Module Replacement)



* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic



Procedures/Wiring Repairs/SIR/SRS Wiring Repairs)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming

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