Thursday, May 16, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 384


Positioning System/Pedal Positioning Sensor/Service and Repair)



* Tilt Motor Replacement (See: Steering and Suspension/Steering/Steering Column/Tilt Wheel Motor/Service and Repair)



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



B1405



DTC B1405



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 Descriptors



DTC B1405 02



- Control Module Voltage Reference Output 2 Circuit Short to Ground



DTC B1405 03



- Control Module Voltage Reference Output 2 Circuit Low Voltage



DTC B1405 07



- Control Module Voltage Reference Output 2 Circuit High Voltage



Diagnostic Fault Information



Circuit/System Description



The object sensors are 3-wire sensors that are used to determine the distance between the vehicle and an object of interest. The parking assist control



module supplies 8 V to the object sensors via the 8 V reference circuit and provides ground via the low reference circuit. The parking assist control



module triggers the sensors in a sequential loop. After each sensor transmits, the parking assist control module uses the sensor echo received through



the signal circuit to calculate the distance and position of an object.



Conditions for Running the DTC



* Ignition ON



* Transmission in REVERSE



Conditions for Setting the DTC



B1405 02



The parking assist control module has detected the 8 V reference circuit is shorted to ground.



B1405 03



The parking assist control module has detected the 8 V reference circuit is less than 6.3 V.