B0110
DTC B0109, B0110, or B0111
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview)provides an overview of each diagnostic category.
DTC Descriptors
* DTC B0109 Left Rear Side Deployment Loop Resistance Low
* DTC B0110 Left Rear Side Deployment Loop Open
* DTC B0111 Left Rear Side Deployment Loop Voltage Out of Range
Diagnostic Fault Information
Circuit Description
The driver side deployment loop consists of the following components:
* An inflatable restraint side impact module LR
* The side impact module LR high circuits
* The side impact module LR low circuits
A shorting bar is used within the side impact module LR connector. The shorting bar will short together the side impact module LR high circuit and the side impact module LR low circuit when the connector is disconnected. This helps prevent unwanted deployment of the inflator module during servicing. During a side or frontal crash of sufficient force, the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop. This flow of current will deploy the side impact module LR. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a DTC will be stored in memory.
Conditions for Running the DTC
Ignition 1 voltage is within the normal operating voltage range.
Conditions for Setting the DTC
DTC B0109
The SDM detects the LR side impact module deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
DTC B0110
* The SDM detects the LR side impact module deployment loop resistance is greater than 4.8 ohms for 500 milliseconds.
* The SDM detects the voltage at the LR side impact module high control is less than 2.4 volts and LR side impact module deployment loop resistance is 6 ohms or greater for 500 milliseconds.
DTC B0111
* The SDM detects the voltage at the LR side impact module high control is greater than 6 volts for 500 milliseconds.
* The SDM detects the voltage at the LR side impact module high control is less than 2.4 volts and the LR side impact module deployment loop resistance is less than 6 ohms for 500 milliseconds.
Action Taken When the DTC Sets
The SDM commands AIR BAG indicator ON.
Conditions for Clearing the DTC
* The condition for setting the DTC no longer exists.
* A history DTC will clear once 255 malfunction-free ignition cycles have occurred.
Diagnostic Aids
The following are possible causes of the malfunction:
* A short between the side impact module LR high and low circuits
* An open or a high resistance in the side impact module LR high or low circuits
* A short to ground or a short to voltage in the side impact module LR high or low circuits
* The side impact module LR connector
* The SDM connector
* A malfunctioning side impact module LR
* A malfunctioning SDM
Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, Refer to Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics).
Reference Information
Schematic Reference
SIR Schematics (AW9) (SIR Schematics (AW9))SIR Schematics (AK5 /AJ7) (SIR Schematics (AK5 /AJ7))
Connector End View Reference
Component Connector End Views (Connector Views)
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)
* Wiring Repairs (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
Scan Tool Reference
Control Module References (Programming and Relearning)for scan tool information
Special Tools
* J 38715-A SIR Driver/Passenger Load Tool
* SA9409Z-A SIR Driver/Passenger Load Tool
Circuit/System Testing
Important: 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.
* The inflatable restraint side impact module
* The SDM module
* The inflatable restraint side impact module wiring harness connector
* The SDM wiring harness connector
1. Ignition OFF, disconnect the harness connector at the LR inflatable restraint side impact module.
2. With the appropriate adaptor, connectJ 38715-A in place of the inflatable restraint side impact module.
3. Ignition ON, verify the DTC is set as current.
• If DTC is not set or is set as history, replace the inflatable restraint side impact module.
4. Ignition OFF, disconnectJ 38715-A and the adaptor. Disconnect the harness connector at the SDM.
5. Ignition ON, test for less than 1 volt between the high control circuit terminal 25 and ground.
• If greater than the specified range, test the high control circuit for a short to voltage.
6. Test for less than 1 volt between the low control circuit terminal 24 and ground.
• If greater than the specified range, test the low control circuit for a short to voltage.
7. Ignition OFF, test for infinite resistance between the high control circuit terminal 25 and ground.
• If not the specified value, test the control circuit for a short to ground.
8. Test for infinite resistance between the appropriate low control circuit terminal 24 and ground.
• If not the specified value, test the control circuit for a short to ground.
9. Test for less than 1 ohm on the high control circuit between the impact module harness connector terminal A and the SDM harness connector terminal 25.
• If greater than the specified range, test the control circuit for an open/high resistance.
10. Test for less than 1 ohm on the low control circuit between the impact module harness connector terminal B and the SDM harness connector terminal 24.
• If greater than the specified range, test the control circuit for an open/high resistance.
11. If all circuits test normal, replace the SDM.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Inflatable Restraint Side Impact Module Replacement - Rear (Service and Repair)
* SIR/SRS Wiring Repairs (Component Tests and General Diagnostics)
* Control Module References (Programming and Relearning)for SDM replacement, setup, and programming