B0016

DTC B0016

CIRCUIT DESCRIPTION
The passenger deployment loop consists of a dual stage inflatable restraint instrument panel (I/P) module. The I/P module high circuits, and the I/P module low circuits exist for both stages 1 and 2. There are 2 shorting bars used within the I/P module connector. These shorting bars short together the I/P module stage 1 high circuits, and low circuits, and the I/P module stage 2 high circuits and low circuits when the connector is disconnected. This prevents 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. This flow of current will deploy the I/P 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 memory.

DTC DESCRIPTORS
This diagnostic procedure supports the following DTCs:
- DTC B0012 Right Front/Passenger Frontal Deployment Loop (stage 2) Resistance Low
- DTC B0013 Right Front/Passenger Frontal Deployment Loop (stage 2) Open
- DTC B0014 Right Front/Passenger Frontal Deployment Loop (stage 2) Voltage Out of Range
- DTC B0016 Right Front/Passenger Frontal Deployment Loop (single stage or stage 1) Resistance Low
- DTC B0017 Right Front/Passenger Frontal Deployment Loop (single stage or stage 1) Open
- DTC B0018 Right Front/Passenger Frontal Deployment Loop (single stage or stage 1) Voltage Out of Range

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

CONDITIONS FOR SETTING THE DTC
- DTC B0012 (stage 2) or B0016 (stage 1) will set when the I/P module deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
- DTC B0013 (stage 2) or B0017 (stage 1) will set when one of the following conditions occurs:
- The I/P module high circuit is less than 2.4 volts and the I/P module deployment loop is more than 6 ohms for 500 milliseconds.
- The I/P module deployment loop resistance is more than 4.8 ohms for 500 milliseconds.
- DTC B0014 (stage 2) or B0018 (stage 1) will set when one of the following conditions occur:
- The I/P module high circuits and/or low circuits is short-to-ground, or short-to-voltage for 500 milliseconds.
- The I/P module high circuit is less than 2.4 volts and I/P module 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 is not currently present, 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 I/P module stage 1 or stage 2, high and low circuits.
- An open or a high resistance in the I/P module stage 1 or stage 2, high or low circuits.
- A short to ground or a short to voltage in the I/P module stage 1 or stage 2, high or low circuits.
- A malfunctioning I/P module connector
- A malfunctioning SDM connector
- A malfunctioning I/P module
- 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,

TEST DESCRIPTION

Step 1 - Step 8:

Step 9:

The numbers below refer to the step numbers on the diagnostic table.
4. This step tests if the malfunction is caused by the I/P module.
6. This step determines which DTCs are present. If DTC B0012 or B0016 is present, test the I/P module for a short between high circuits and low circuits in stage 1 or stage 2. If DTC B0013 or B0017 is present, test the I/P module high circuits and low circuits for an open and for high resistance in stage 1 or stage 2. If DTC B0014 or B0018 is present, test the I/P module high and low circuits for a short-to-ground, and for a short-to-voltage in stage 1 or stage 2.