Thursday, April 25, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 15


* 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.



锟斤拷 If 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.



锟斤拷 If 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.



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.

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