FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.
Home >> Hummer >> 2010 >> H3 L5-3.7L >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> B Code Charts >> B0082

B0082




DTC B0077, B0078, B0079, B0080, B0081, or B0082

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.

DTC Descriptors
DTC B0077
- Left Front Side Impact Sensor (SIS) Performance

DTC B0078
- Right Front Side Impact Sensor (SIS) Performance

DTC B0079
- Incorrect Left Front Side Impact Sensor (SIS) Installed

DTC B0080
- Discard Left Front Side Impact Sensor (SIS)

DTC B0081
- Incorrect Right Front Side Impact Sensor (SIS) Installed

DTC B0082
- Discard Right Front Side Impact Sensor (SIS)

Diagnostic Fault Information





Circuit/System Description

The inflatable restraint side impact sensor (SIS) utilizes a unidirectional 2-wire circuit. The SIS modulates current on the interface to send ID, State of Health, and deployment commands to the inflatable restraint sensing and diagnostic module (SDM). The SDM serves as a power source and a ground for the SIS. When the ignition is turned on and input power from the SDM is first detected, the SIS responds by performing internal diagnostics and sending an ID to the SDM. The SDM considers the ID to be valid if the response time is less than 5 seconds. The SIS continually communicates status messages to the SDM, which determines if a fault is present in the SIS circuit. When a fault is detected, the SDM resets the SIS twice by removing and reapplying power. If the fault is still present, the SDM will set a diagnostic trouble code (DTC).

Conditions for Running the DTC

Ignition voltage is between 9-16 V.

Conditions for Setting the DTC

B0077 and B0078
* A valid ID message is not received within 5 seconds of the SIS being powered up.
* Status message is not received.
* The SDM has failed twice to reset the SIS.

B0079 and B0081
* The SDM has received an ID message from the SIS that does not match the ID stored in the SDM memory.
* When two SIS resets are attempted without the correct identification being detected by the SDM.

B0080 and B0082

Will set when the SDM has received a NOK (Not OK) message from the SIS.

Action Taken When the DTC Sets

* The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.
* The SDM attempts to reset the SIS.

Conditions for Clearing the DTC

* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Reference Information
Schematic Reference

SIR Schematics ([1][2]Air Bag Systems)
Connector End View Reference

Component Connector End Views (Connector End Views By Name)
Description and Operation

SIR System Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Testing

Note:
* Refer to SIR Service Precautions (Technician Safety Information).
* When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector:

- Front end sensor
- SDM module
- Front end sensor wiring harness connector
- SDM wiring harness connector

1. Ignition OFF, disconnect the harness connector at the SDM and the appropriate side impact sensor.
2. Ignition ON, test for less than 1 V between the side impact sensor voltage circuit terminal B and ground.

• If greater than the specified range, test the voltage circuit for a short to voltage

3. Ignition ON, test for less than 1 volt between the side impact sensor signal circuit terminal A and ground.

• If greater than the specified range, test the signal circuit for a short to voltage.

4. Test for infinite resistance between the side impact sensor voltage circuit terminal B and ground.

• If less than the specified value, test the voltage circuit for a short to ground.

5. Test for less than 1 ohm between the side impact sensor voltage circuit terminals listed below:

* Right side impact sensor terminal B and SDM harness connector terminal 37.
* Left side impact sensor terminal B and SDM harness connector terminal 36.

• If greater than the specified range, test the voltage circuit for an open/voltage resistance.

6. Test for less than 1 ohm between the side impact sensor signal circuit terminals listed below:

* Right side impact sensor terminal A and SDM harness connector terminal 39.
* Left side impact sensor terminal A and SDM harness connector terminal 38.

• If greater than the specified range, test the signal circuit for an open/high resistance.

7. If all circuits test normal, replace the appropriate side impact sensor.
8. Reconnect all SIR components. Ignition ON, verify the DTC does not set as current.

• If the DTC resets as current, replace the SDM.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Inflatable Restraint Side Impact Sensor Replacement (Inflatable Restraint Side Impact Sensor Replacement)
* SIR/SRS Wiring Repairs (Component Tests and General Diagnostics)
* Control Module References (Programming and Relearning) for SDM replacement, setup, and programming

pro multis Credits:Operation CHARM About Operation CHARM