Thursday, July 25, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 154


* 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.



8. If all circuits test normal, replace the appropriate sensor.



9. Reconnect all SIR components. Ignition ON, with a scan tool clear and check for DTCs.



锟斤拷 If the DTC returns and is current, replace the SDM.



Repair Instructions



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



* Inflatable Restraint Front End Sensor Replacement (See: Restraints and Safety Systems/Air Bag Systems/Impact Sensor/Service and



Repair/Inflatable Restraint Front End Sensor Replacement)



* Inflatable Restraint Side Impact Sensor Replacement (Front Side Door) (See: Restraints and Safety Systems/Air Bag Systems/Impact



Sensor/Service and Repair/Inflatable Restraint Side Impact Sensor Replacement (Front Side Door))Inflatable Restraint Side Impact Sensor



Replacement (Rear Side Door) (See: Restraints and Safety Systems/Air Bag Systems/Impact Sensor/Service and Repair/Inflatable Restraint



Side Impact Sensor Replacement (Rear Side Door))



* 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



B0091



DTC B0091



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.

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