B0097
DTC B0097
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 B0097
- Left Front Seat Belt Switch Circuit
Diagnostic Fault Information
Circuit/System Description
The inflatable restraint seat belt buckle switch is a hall effect switch within the seat belt buckle and provides an input to the Inflatable Restraint Sensing and Diagnostic Module (SDM). The Inflatable Restraint Sensing and Diagnostic Module supplies a low reference circuit and a seat belt switch signal circuit to determine a buckled or unbuckled condition. The Inflatable Restraint Sensing and Diagnostic Module monitors the seat belt switch circuits and if a fault is detected a DTC will be set.
Conditions for Running the DTC
Ignition voltage is between 9-16 V.
Conditions for Setting the DTC
B0097
* The Inflatable Restraint Sensing and Diagnostic Module detects the seat belt buckle switch circuit amperage is 4 mA or less for 500 milliseconds.
* The Inflatable Restraint Sensing and Diagnostic Module detects the seat belt buckle switch circuit amperage is between 8-11 mA for 500 milliseconds.
* The Inflatable Restraint Sensing and Diagnostic Module detects the seat belt buckle switch circuit amperage is 18 mA or greater for 500 milliseconds.
Action Taken When the DTC Sets
The Inflatable Restraint Sensing and Diagnostic Module will store a DTC and illuminate the air bag indicator in the instrument cluster.
Conditions for Clearing the DTC
The condition for setting the DTC no longer exists.
Reference Information
Schematic Reference
SIR Schematics [1][2]Air Bag Systems
Connector End View Reference
Component Connector End Views 5 Bow Lowered Switch (CM7)
Description and Operation
SIR System Description and Operation Description and Operation
Electrical Information Reference
* Circuit Testing Circuit Testing
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
* Connector Repairs Connector Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
1. Ignition ON.
2. Verify the driver scan tool Seat Belt Status parameter changes between Buckled and Unbuckled when the seat belt is buckled and unbuckled.
• If the parameter does not change
Refer to Circuit/System Testing.
• If the parameter changes
3. All OK.
Circuit/System Testing
Note: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
* Seat belt switch - driver
* Inflatable restraint sensing and diagnostic module
1. Ignition OFF, disconnect the harness connector at the driver seat belt switch.
2. Test for less than 5 ohms between the low reference circuit terminal B and ground.
• If 5 ohms or greater
1. Ignition OFF, disconnect the harness connector at the 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 Inflatable Restraint Sensing and Diagnostic Module.
• If less than 5 ohms
3. Ignition OFF, disconnect the harness connector at the Inflatable Restraint Sensing and Diagnostic Module, ignition ON.
4. Test for less than 1 V between the harness connector terminal 3 and ground.
• If 1 V or greater
Repair the short to voltage on the circuit.
• If less than 1 V
5. Test for infinite resistance between the harness connector terminal 3 and ground.
• If less than infinite resistance
Repair the short to ground on the circuit.
• If infinite resistance
6. Test for less than 2 ohms between Inflatable Restraint Sensing and Diagnostic Module - terminal 3 and the seat belt switch - driver terminal A end to end.
• If 2 ohms or greater
Repair the open/high resistance in the circuit.
• If less than 2 ohms
7. Replace the seat belt switch - driver.
8. Operate the vehicle under the conditions for setting the DTC. The DTC should not set.
• If the DTC sets
Replace the Inflatable Restraint Sensing and Diagnostic Module.
• If the DTC does not set
9. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Seat Belt Buckle Pretensioner Replacement Removal and Replacement for Seat Belt Buckle replacement
* SIR/SRS Wiring Repairs SIR/SRS Wiring Repairs
* Control Module References Control Module References for Inflatable Restraint Sensing and Diagnostic Module replacement, setup, and programming