B0013

CIRCUIT DESCRIPTION

SIR Schematics: Standard Air Bags (Power, Grounds And Side Impact Sensors):

SIR Schematics: Standard Air Bags (Inflator Modules):

SIR Schematics: Dual Stage Air Bags (Power, Ground And Sensors):

SIR Schematics: Dual Stage Air Bags (Module Controls):

The passenger deployment loop consists of an dual stage inflatable restraint IP module, the IP module - stage 2 high and IP module - stage 2 low circuits. A shorting bar is used in the IP module connector which will short together both IP module stage 1 & 2 high circuits and IP module stage 1 & 2 low circuits when the connector is disconnected, this will help to prevent unwanted deployment of the inflator module during servicing. During a frontal 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 IP module. 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 non-volatile memory.

CONDITIONS FOR RUNNING THE DTC
Ignition 1 Voltage is within the normal operating voltage range.

CONDITIONS FOR SETTING THE DTC
The DTC will set if one of the following conditions occurs:
^ IP module - stage 2 high is less than 2.4 volts, and IP module - stage 2 deployment loop resistance is greater or equal to 6 ohms for 500 milliseconds.
^ IP module - stage 2 deployment loop resistance is more than 4.8 ohms for 500 milliseconds.

ACTION TAKEN WHEN THE DTC SETS
The SDM commands the AIR BAG warning 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:
^ The wire to terminal connections in the IP module - stage 2 high and/or low circuit.
^ The IP module wiring harness connector.
^ The SDM wiring harness connector.

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 and Poor Connections in Diagrams. Diagnostic Aids

TEST DESCRIPTION

Steps 1-9:

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 IP module.
7. Tests for an open or high resistance in the IP module - stage 2 high and IP module - stage 2 low circuits.