Tuesday, August 13, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 145


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



锟斤拷 If 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



锟斤拷 If 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



* Left rear side impact sensor terminal B



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



6. Test for less than 1 ohm between the following signal circuit terminals.



* Right front end sensor terminal 1 and SDM terminal 37.



* Left front end sensor terminal 1 and SDM terminal 36.



* Right front side impact sensor terminal B and the SDM terminal 43.



* Left front side impact sensor terminal B and the SDM terminal 42.



* Right rear side impact sensor terminal B and the SDM terminal 45.



* Left rear side impact sensor terminal B and the SDM terminal 44.



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



7. Test for less then 1 ohm between the following front end sensor low reference circuit terminals.



* Right front end sensor terminal 2 and SDM terminal 39.



* Left front end sensor terminal 2 and SDM terminal 38.



* Right front side impact sensor terminal A and the SDM terminal 41.



* Left front side impact sensor terminal A and the SDM terminal 40.



* Right rear side impact sensor terminal A and the SDM terminal 47.



* Left rear side impact sensor terminal A and the SDM terminal 46.



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

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