Thursday, May 9, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 624


Control Module References (See: Testing and Inspection/Programming and Relearning) for Scan Tool Information



Circuit/System Verification



1. Ignition ON, perform the scan tool Learn Column Soft Stops procedure. Refer to Power Tilt Steering Column Calibration (See: Steering and



Suspension/Steering/Steering Column/Testing and Inspection/Programming and Relearning).



2. Operate the vehicle within the Conditions for Running and Setting. Verify DTC B2890 does not reset.



锟斤拷 If the DTC resets, replace the MSM.



Repair Instructions



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



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



B3006



DTC B3006



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.



DTC Descriptor



DTC B3006 5A



- Hood Ajar Circuit Plausibility Failure



Diagnostic Fault Information



Circuit/System Description



The body control module (BCM) monitors the voltage input of the hood open switch signal circuit and the hood open closed switch signal circuit.



With the hood open, the hood ajar portion of the switch is closed, grounding the hood ajar switch signal circuit from the BCM, and the hood closed



portion of the switch is open. With the hood closed, the hood closed portion of the switch is closed, grounding the hood closed switch signal circuit



from the BCM, and the hood ajar portion of the switch is open. During proper operation, the two separate voltage signals at the BCM should never



be at the same voltage.



Conditions for Running the DTC



The BCM continuously monitors for this DTC



Conditions for Setting the DTC



Both the hood open switch signal circuit and the hood closed switch signal circuit are simultaneously in an active or inactive state.



Action Taken When the DTC Sets



* Remote start functions will be disabled.



* The hood ajar switch inputs will be ignored by content theft deterrent (CTD).



Conditions for Clearing the DTC



* A current DTC will clear when the conditions for setting are no longer present.



* A history DTC will clear after 40 malfunction free ignition cycles.