Chevrolet Trax: Airbag indicator malfunction
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
Circuit/System Description
When the ignition is turned ON, during the bulb check, the driver air bag indicator will flash, and then turn OFF after the bulb check. The inflatable restraint sensing and diagnostic module (SDM) performs diagnostic tests on the SIR system during the bulb check. If any malfunction exists the SDM will request the instrument cluster to illuminate the air bag indicator steady, via serial data. If a preexisting malfunction exists, the air bag indicator will illuminate steady immediately after the ignition is turned ON. If the ignition 1 voltage is outside of the normal operating voltage range of 9-16 V, the inflatable restraint sensing and diagnostic module will command the instrument cluster to illuminate the air bag indicator ON, even with no DTCs present, and then disable all deployment loops.
Diagnostic Aids
- A DTC B1370 may set if the ignition 1 circuit is outside the 9-16 V range.
- A flashing driver air bag indicator is displayed if the inflatable restraint sensing and diagnostic module was programmed but did not fully complete the programming. For a flashing driver air bag indicator, refer to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup .
Reference Information
Schematic Reference
SIR Schematics (Encore), SIR 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
Supplemental Inflatable Restraint System Description and Operation
Electrical Information Reference
- Circuit Testing
- Testing for Intermittent Conditions and Poor Connections
- Connector Repairs
- Wiring Repairs
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
If the driver air bag indicator is flashing, refer to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup .
Circuit/System Testing
- Verify K36 Inflatable Restraint Sensing and Diagnostic Module DTCs are not set.
- If Inflatable Restraint Sensing and Diagnostic Module DTCs are set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- If Inflatable Restraint Sensing and Diagnostic Module DTCs are not set
- Verify the air bag indicator turns ON and OFF when commanding the Instrument Cluster All Indicators ON and OFF with a scan tool.
- If air bag indicator does not turn on or off
If the air bag indicator does not turn ON and OFF as expected, replace the P16 Instrument Cluster
- If air bag indicator does turn on or off
- Replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
- SIR/SRS Wiring Repairs
- Control Module References for instrument cluster or inflatable restraint sensing and diagnostic module replacement, programming and setup
READ NEXT:
Sir disabling and enabling
SIR component location affects how a vehicle should be serviced. There are
parts of the SIR system installed in
various locations around a vehicle. To find the location of the SIR components
refer t
Sir service precautions
General Service Instructions
WARNING: When performing service on or near the SIR components or
the SIR
wiring, the SIR system must be disabled. Refer to SIR Disabling and
Enabling . Failure to observ
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Fig. 9: Drive Range, First Gear Engine Braking Fluid Flow Diagram
Drive Range, First Gear (Gen 2/Hybrid)
As the vehicle speed increases, the transmission control module (TCM)
receives input signals from the
automatic transmission input and output speed sensors, throttle position sensor
and other
Engine Overhaul Procedures
NOTE: Examples used in this article are general in nature and do
not necessarily relate
to a specific engine or system. Illustrations and procedures have been chosen
to guide mechanic through engine overhaul process. Descriptions of processes
of cleaning, inspection, assembly and machine shop pract
