Chevrolet Trax: DTC B0083-B0088: Side/front impact sensor

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 B0083 01

Left Front Impact Sensor Short to Battery

DTC B0083 02

Left Front Impact Sensor Short to Ground

DTC B0083 04

Left Front Impact Sensor Open

DTC B0083 05

Left Front Impact Sensor High/Voltage Open

DTC B0083 0C

Left Front Impact Sensor Low Current

DTC B0083 39

Left Front Impact Sensor Internal Electronic Failure

DTC B0083 3A

Left Front Impact Sensor Incorrect Component Installed

DTC B0083 71

Left Front Impact Sensor Invalid Serial Data Received

DTC B0084 01

Right Front Impact Sensor Short to Battery

DTC B0084 02

Right Front Impact Sensor Short to Ground

DTC B0084 04

Right Front Impact Sensor Open

DTC B0084 05

Right Front Impact Sensor High/Voltage Open

DTC B0084 0C

Right Front Impact Sensor Low Current

DTC B0084 39

Right Front Impact Sensor Internal Electronic Failure

DTC B0084 3A

Right Front Impact Sensor Incorrect Component Installed

DTC B0084 71

Right Front Impact Sensor Invalid Serial Data Received

DTC B0085 01

Left Front Side Impact Sensor Short to Battery

DTC B0085 02

Left Front Side Impact Sensor Short to Ground

DTC B0085 04

Left Front Side Impact Sensor Open

DTC B0085 05

Left Front Side Impact Sensor High/Voltage Open

DTC B0085 0C

Left Front Side Impact Sensor Low Current

DTC B0085 39

Left Front Side Impact Sensor Internal Malfunction

DTC B0085 3A

Left Front Side Impact Sensor Incorrect Component Installed

DTC B0085 71

Left Front Side Impact Sensor Invalid Serial Data Received

DTC B0086 01

Right Front Side Impact Sensor Short to Battery

DTC B0086 02

Right Front Side Impact Sensor Short to Ground

DTC B0086 04

Right Front Side Impact Sensor Open

DTC B0086 05

Right Front Side Impact Sensor High/Voltage Open

DTC B0086 0C

Right Front Side Impact Sensor Low Current

DTC B0086 39

Right Front Side Impact Sensor Internal Malfunction

DTC B0086 3A

Right Front Side Impact Sensor Incorrect Component Installed

DTC B0086 71

Right Front Side Impact Sensor Invalid Data

DTC B0087 01

Left Rear Side Impact Sensor Short to Battery

DTC B0087 02

Left Rear Side Impact Sensor Short to Ground

DTC B0087 04

Left Rear Side Impact Sensor Open

DTC B0087 05

Left Rear Side Impact Sensor High/Voltage Open

DTC B0087 0C

Left Rear Side Impact Sensor Low Current

DTC B0087 39

Left Rear Side Impact Sensor Internal Malfunction

DTC B0087 3A

Left Rear Side Impact Sensor Incorrect Component Installed

DTC B0087 71

Left Rear Side Impact Sensor Invalid Serial Data Received

DTC B0088 01

Right Rear Side Impact Sensor Short to Battery

DTC B0088 02

Right Rear Side Impact Sensor Short to Ground

DTC B0088 04

Right Rear Side Impact Sensor Open

DTC B0088 05

Right Rear Side Impact Sensor High/Voltage Open

DTC B0088 0C

Right Rear Side Impact Sensor Low Current

DTC B0088 39

Right Rear Side Impact Sensor Internal Malfunction

DTC B0088 3A

Right Rear Side Impact Sensor Incorrect Component Installed

DTC B0088 71

Right Rear Side Impact Sensor Invalid Data

Diagnostic Fault Information

Circuit/System Description

The impact sensors are equipped on vehicles to supplement the Supplemental Inflatable Restraint (SIR) System performance. The impact sensors are electronic and are not part of the deployment loops, but instead provide inputs to the Inflatable Restraint Sensing and Diagnostic Module. The impact sensors can assist in determining the severity of some frontal and side collisions. The Inflatable Restraint Sensing and Diagnostic Module uses the input from the impact sensors to assist in determining the severity of a collision further supporting air bag deployment. If the Inflatable Restraint Sensing and Diagnostic Module determines a deployment is warranted, the Inflatable Restraint Sensing and Diagnostic Module will cause current to flow through the deployment loops deploying the air bags.

Conditions for Running the DTC

Ignition voltage is between 9-16 V.

Conditions for Setting the DTC

Any of the following conditions exist for 10 seconds:

B0083 01, B0084 01, B0085 01, B0086 01, B0087 01, B0088 01

The sensor has been shorted to voltage.

B0083 02, B0084 02, B0085 02, B0086 02, B0087 02, B0088 02

• The sensor has been shorted to ground.
• The sensor current is greater than 23 mA for greater than 5 milliseconds

B0083 04, B0084 04, B0085 04, B0086 04, B0087 04, B0088 04

• The sensor circuit is open.
• The Inflatable Restraint Sensing and Diagnostic Module has not received a message from the sensor for greater than 375 milliseconds.

B0083 05, B0084 05, B0085 05, B0086 05, B0087 05, B0088 05

• The sensor circuit is open or high resistance.
• The Inflatable Restraint Sensing and Diagnostic Module has not received a message from the sensor for greater than 375 milliseconds.

B0083 0C, B0084 0C, B0085 0C, B0086 0C, B0087 0C, B0088 0C

• The sensor has been shorted to ground.
• The sensor current is greater than 23 mA for greater than 5 milliseconds.

B0083 39, B0084 39, B0085 39, B0086 39, B0087 39, B0088 39

• The Inflatable Restraint Sensing and Diagnostic Module has received a Not OK message from the sensor.
• The Inflatable Restraint Sensing and Diagnostic Module has not received a message.

B0083 3A, B0084 3A, B0085 3A, B0086 3A, B0087 3A, B0088 3A

• The Inflatable Restraint Sensing and Diagnostic Module has received identification message from the sensor, which does not match the identification stored in the Inflatable Restraint Sensing and Diagnostic Module memory.
• The Inflatable Restraint Sensing and Diagnostic Module has reset the sensor twice without detecting the correct identification message.

B0083 71, B0084 71, B0085 71, B0086 71, B0087 71, B0088 71

The Inflatable Restraint Sensing and Diagnostic Module has received invalid serial data from the sensor.

Action Taken When the DTC Sets

The Inflatable Restraint Sensing and Diagnostic Module requests the instrument panel cluster to illuminate the AIR BAG indicator.

Conditions for Clearing the DTC

• The condition for setting the DTC no longer exists.
• A history DTC will clear once 100 malfunction-free ignition cycles have occurred.
• An ignition cycle is required for the DTC to go from current to history.

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

NOTE:

• Refer to SIR Service Precautions.
• Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

• Impact sensor
• Inflatable Restraint Sensing and Diagnostic Module
• Impact sensor wiring harness connector
• Inflatable Restraint Sensing and Diagnostic Module wiring harness connector

• The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly. Replace any CPA that is damaged or missing.
• If the condition is intermittent or cannot be duplicated, disconnect the connectors and add dielectric grease / lubricant (Nyogel 760G or equivalent, meeting GM specification 9986087). This procedure will correct the high resistance condition due to terminal fretting corrosion.

1. Verify that DTC B0083-B0088 symptom byte 3A, 39, or 71 is not set as current.

• If DTC B0083-B0088 symptom byte 3A, 39 or 71 is set as current

Replace the appropriate B59 or B63 Impact Sensor.

• If DTC B0083-B0088 symptom byte 3A, 39 or 71 is not set as current

2. Verify that DTC B0083-B0088 symptom byte 01, 02, 04, or 05 is not set as current.

• If DTC B0083-B0088 symptom byte 01, 02, 04, or 05 is set as current

Refer to Circuit/System Testing.

• If DTC B0083-B0088 symptom byte 01, 02, 04, 05 is not set as current

3. All OK.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate B59 or B63 Impact Sensor, wait 120 seconds.
2. Test for less than 10 ohms between the low reference circuit terminal 2 and ground.

• If 10 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.
2. Test for less than 2 ohms in the low reference circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
• If less than 10 ohms

3. Test for greater than 50k ohms between the signal circuit terminal 1 and ground.

• If 50k ohms or less

1. Disconnect the harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.
2. Test for infinite resistance between the signal circuit and ground.

• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
• If greater than 50k ohms

4. Ignition ON, test for less than 1 V between the signal circuit terminal 1 and ground.

• If greater than 1 V

1. Disconnect the harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.

• If greater than 1 V, repair the short to voltage on the circuit.
• If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
• If less than 1 V

5. Disconnect the harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.
6. Test for less than 2 ohms between the B59 or B63 Impact Sensor signal circuit end to end from the impact sensor terminal 1 and the appropriate K36 Inflatable Restraint Sensing and Diagnostic Module terminal listed below:

• B63LF Side Impact Sensor - Left Front - Terminal 19 X2
• B59L Front Impact Sensor - Left - Terminal 23 X2
• B63RF Side Impact Sensor - Right Front - Terminal 22 X2
• B59R Front Impact Sensor - Right - Terminal 26 X2
• B63LR Side Impact Sensor - Left Rear - Terminal 27 X2
• B63RR Side Impact Sensor - Right Rear - Terminal 30 X2
• If 2 ohms or greater

Repair the open/high resistance in the circuit.

• If less than 2 ohms

7. Ignition OFF, connect all harness connectors, press in the CPA (if equipped) until an audible and/or tactile click is heard.
8. Ignition ON, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.
9. Verify the DTC does not set.

• If the DTC sets

Replace the B59 or B63 Impact Sensor.

• If the DTC does not set

10. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

• Airbag Side Impact Sensor Replacement (Encore), Airbag Side Impact Sensor Replacement (Trax)
• Inflatable Restraint Remote Impact Sensor Replacement
• Front End Inflatable Restraint Discriminating Sensor Replacement (Trax), Front End Inflatable
• Restraint Discriminating Sensor Replacement (Encore)
• Control Module References for Inflatable Restraint Sensing and Diagnostic Module replacement, programming and setup

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