Chevrolet Trax: DTC B1529: Control module voltage reference output 5
Diagnostic Instructions
- Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
- Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
- Diagnostic Procedure Instructions provides an overview of each
diagnostic category.
DTC Descriptors
DTC B1529 03
Control Module Voltage Reference Output 5 Circuit Low Voltage
DTC B1529 07
Control Module Voltage Reference Output 5 Circuit High Voltage
Diagnostic Fault Information
Electrical DTCs
Circuit/System Description
The body control module (BCM) supplies voltage to the steering wheel control
switches and monitors the return
signal. Each switch state is associated to a set resistance value and when
pressed a specific voltage drop occurs
across the resistor unique to the switch. The BCM identifies the switch
selection and activates the feature.
Conditions for Running the DTC
- The system voltage is between 9-16 V.
- The ignition is ON.
Conditions for Setting the DTC
B1529 03
- The BCM detects a short to ground in the 12 V reference circuit.
- The above condition is present for greater than 30 s.
B1529 07
- The BCM detects a short to voltage in the 12 V reference circuit.
- The above condition is present for greater than 30 seconds.
Action Taken When the DTC Sets
The BCM will ignore switch inputs.
Conditions for Clearing the DTC
- The condition responsible for setting the DTC no longer exists.
- A history DTC will clear once 100 consecutive malfunction free ignition
cycles have occurred.
Reference Information
Schematic Reference
Steering Wheel Secondary/Configurable Control Schematics (Encore),
Steering Wheel
Secondary/Configurable Control Schematics (Trax)
Connector End View Reference
WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS -
INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT
CONNECTOR END VIEWS - INDEX - TRAX
Description and Operation
Steering Wheel Controls Description and Operation
Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
- Ignition OFF, disconnect the S70R Steering Wheel Controls Switch - Right.
- Ignition ON, test for greater than 11 V between the voltage reference
circuit terminal 1 and ground.
- If less than the specified value, test the voltage reference circuit for
a short to ground or an
open/high resistance. If the circuit tests normal, replace the K9 Body
Control Module.
- Test for greater than 11 V between the voltage reference circuit
terminal 1 and the signal circuit terminal
2.
- If less than the specified value, test the signal circuit for a short to
voltage or an open/high
resistance. If the circuit tests normal, replace the K9 Body Control Module.
- Ignition OFF, disconnect the X3 harness connector at the K9 Body Control
Module.
- Test for infinite resistance between the signal circuit terminal 2 at
the S70R Steering Wheel Controls
Switch - Right and ground.
- If less than the specified value, test the signal circuit for a short to
ground.
- If all circuits test normal, test or replace the S70R Steering Wheel
Controls Switch - Right.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic
procedure.
Control Module References for BCM replacement, setup, and programming
READ NEXT:
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
STEERING WHEEL CONTROLS DESCRIPTION AND OPERATION
Steering Wheel Controls Block Diagram
Fig. 3: Steering Wheel Controls Block Diagram
The steering wheel control switches duplicate the function of
SEE MORE:
This vehicle is equipped with
airbags. See Airbag System
(Mexico) or Airbag
System (U.S. and Canada). Airbags are designed to
inflate if the impact exceeds the
specific airbag system's deployment
threshold. Deployment thresholds
are used to predict how severe a
crash is likely to be in time for the
ABRASIVE CLEANING
removing contaminants using a cleaning agent containing abrasive material.
Cleaning that requires
physical abrasion (e.g., glass bead blasting, wire brushing).
ADDITIVE
in automotive terminology, a substance added to a liquid, such as engine oil,
transmission fluid, gear oil or c