2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 192

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 192

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If the test lamp is always OFF

11.1Ignition OFF, disconnect the harness connector at the Assist Step Control Module.

11.2Test for less than 1 V between the control circuit and ground.

-If 1 V or greater, repair the short to voltage on the circuit.

閳彂f less than 1 V

11.3Ignition OFF.

11.4Test for less than 2 閳?in the control circuit end to end.

-If 2 閳?or greater, repair the open/high resistance in the circuit.

-If less than 2 閳? replace the Assist Step Control Module.

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If the test lamp is always ON

11.1Ignition OFF, disconnect the harness connector at the Assist Step Control Module.

11.2Test for infinite resistance between the control circuit and ground.

-If less than infinite resistance, repair the short to ground on the circuit.

-If infinite resistance, replace the Assist Step Control Module.

閳?If the test lamp turns ON and OFF

12.Test or replace the appropriate assist step motor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

- Assist Step Motor Replacement

- Control Module References for Assist Step Control Module replacement, programming and setup.

B0052

DTC B0052 or B0053

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 B0052 00

- Deployment Commanded

Circuit/System Description

The inflatable restraint sensing and diagnostic module (SDM) contains a device that converts vehicle velocity changes into an electrical signal. The

SDM compares this electrical signal to a value stored in memory. When the generated signal exceeds the stored value, the SDM performs additional

signal processing and compares the generated signals to values stored in memory. When 2 of the generated signals exceed the stored values, the

SDM will cause current to flow through the deployment loops, deploying the air bags and/or pretensioners causing DTC B0052 to set.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC