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.
鈬揑f less than 1 V
11.3Ignition OFF.
11.4Test for less than 2 锟?in the control circuit end to end.
-If 2 锟?or greater, repair the open/high resistance in the circuit.
-If less than 2 锟? replace the Assist Step Control Module.
-
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.
锟?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
