Wednesday, June 19, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 120


Action Taken When the DTC Sets



* The SDM defaults the seat position sensor to seat forward threshold.



* The SDM requests the instrument panel cluster to illuminate the AIR BAG indicator.



Conditions for Clearing the DTC



* The condition for setting the DTC no longer present.



* A history DTC will clear once 100 fault-free ignition cycles have occurred.



Reference Information



Schematic Reference



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)



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



Repairs/Wiring Repairs)



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



Procedures/Connector Repairs/Connector Repairs)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information



Circuit/System Verification



1. Verify that DTC B0079 08 or B0080 08 is not set.



锟斤拷 If the DTC is set with the symptom byte 08, replace the appropriate B88 seat position sensor.



2. Ignition ON, observe the scan tool seat position sensor parameter. The reading should be between 2-20 m A. With the scan tool verify that the



seat position sensor parameter is between 2-20 m A.



锟斤拷 If not within the specified range, refer to Circuit/System Testing.



3. With the seat un-weighted, observe the scan tool while moving the seat to the full forward and then full rearward positions. The seat position



sensor parameter should be continuously between 2-20 m A.



锟斤拷 If not within the specified range, refer to Circuit/System Testing.



4. While sitting in the seat, observe the scan tool while moving the seat to the full forward and then full rearward positions. The seat position



sensor parameter should be continuously between 2-20 m A.



锟斤拷 If not within the specified range, refer to Circuit/System Testing.



Circuit/System Testing



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



affected component/connector:



* Seat position sensor



* SDM module



* Seat position sensor wiring harness connector



* SDM wiring harness connector



1. Ignition OFF, disconnect the harness connector at the appropriate B88 seat position sensor.



2. Test for less than 10 ohm between the low reference circuit terminal 1 and ground.

No comments:

Post a Comment