DTC 0034

DTC 0034

CIRCUIT DESCRIPTION
The inflatable restraint instrument panel (I/P) module deployment loop consists of an inflatable restraint I/P module, the I/P module high and I/P module low circuits. A shorting bar is used in the inflatable restraint I/P module connector, which will short together the I/P module high and I/P module 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 sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy the inflatable restraint steering wheel 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.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTCs:
DTC 0033 Passenger Deployment Loop Short to Battery
DTC 0034 Passenger Deployment Loop Short to Ground

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

CONDITIONS FOR SETTING THE DTC
- DTC 0033 will set when the SDM detects a short to voltage in the I/P module deployment loop.
- DTC 0034 will set when the SDM detects a short to ground in the I/P module deployment loop.

ACTION TAKEN WHEN THE DTC SETS
The SDM commands the AIR BAG indicator ON.

CONDITIONS FOR CLEARING THE DTC
The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.

DIAGNOSTIC AIDS
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.

The following are possible causes of the malfunction:
- A short to voltage in the I/P module high or the I/P module low circuits
- A short to ground in the I/P module high or the I/P module low circuits
- A malfunctioning inflatable restraint I/P module
- An internal SDM malfunction

If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections.

TEST DESCRIPTION

Step 1 - Step 13:

The numbers below refer to the step numbers on the diagnostic table.
4. This step tests the I/P module high and the I/P module low circuits for a short to voltage.
8. This step tests to see if the malfunction is caused by the inflatable restraint I/P module.
9. This step tests the I/P module high and the I/P module low circuits for a short to ground.