B0111

CIRCUIT DESCRIPTION
The inflatable restraint side impact module - LR deployment loop consists of an side impact module - LR, the side impact module - LR high and side impact module - LR low circuits. A shorting bar used within the side impact module - LR connector which will short together both side impact module - LR high and low circuits when the connector is disconnected, this will help to prevent unwanted deployment of the side impact module during servicing. During a side crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to 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 diagnostic trouble code (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 will set when the side impact module
- LR deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
^ DTC B0111 will set when one of the following conditions occurs:
- Side impact module - LR high circuit is less than 2.4 volts and the side impact module - LR deployment loop is more than 6 ohms for 500 milliseconds.
- Side impact module - LR deployment loop resistance is more than 4.8 ohms for 500 milliseconds.
^ DTC B0111 will set when one of the following conditions occur:
- Side impact module - LR high and/or low circuits is short to ground or short to voltage for 500 milliseconds.
- Side impact module - LR high circuit is less than 2.4 volts and side impact module - LR deployment loop resistance is less than 6 ohms for 500 milliseconds.

ACTION TAKEN WHEN THE DTC SETS
The SDM commands the AIR BAG indicator ON via Class 2 serial data.

CONDITIONS FOR CLEARING THE DTC
^ The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
^ 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 Diagnostic Aids for Circuit Testing and Wiring Repair procedures.

TEST DESCRIPTION

Steps 1-6:

Steps 7-9:

The number(s) below refer to the step number(s) on the diagnostic table.
4. Tests to see if the malfunction is caused by the side impact module - LR.
6. Tests to see what DTCs are present. If DTC B0109 is present, test the side impact module - LR for a short between high and low circuits. If DTC B0110 is present, test the side impact module - LR high and low circuits for an open and for high resistance. If DTC B0111 is present, test the side impact module - LR high and low circuits for a short to ground and for a short to voltage.

For a description of the RPO Code(s) shown in this article/images refer to the RPO Code List found at Vehicle/Application and ID