The passenger deployment loop consists of an inflatable restraint IP module, the IP module high and IP module low circuits. A shorting bar is used in the inflatable restraint IP module connector which will short together the IP module high and IP 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 inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy the inflatable restraint 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.
Ignition 1 Voltage is within the normal operating voltage range.
The DTC will set if one of the following conditions occurs:
• | IP module high is less than 2.4 volts, IP module deployment loop resistance is greater or equal to 6 ohms for 500 milliseconds. |
• | IP module deployment loop resistance is more than 4.8 ohms for 500 milliseconds. |
The SDM commands the AIR BAG warning indicator ON via Class 2 serial data.
• | 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. |
The following are possible causes of the malfunction:
• | The wire to terminal connections in the IP module high and/or IP module 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 Conditions and Poor Connections in Wiring Systems.
The number(s) below refer to the step number(s) on the diagnostic table.
Tests to see if the malfunction is caused by the inflatable restraint IP module.
Tests for a open or high resistance in the IP module high and IP module low circuits.
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: SIR Schematics | |||
1 | Did you perform A Diagnostic System Check - SIR? | Go to Step 2 | |
2 |
Does connector exhibits any signs of damage or corrosion? | Go to Step 3 | Go to Step 4 |
3 |
Did you complete the repair? | Go to Step 9 | -- |
Does the scan tool indicate that DTC 0017 is current? | Go to Step 6 | Go to Step 5 | |
5 |
Did you complete the replacement? | Go to Step 9 | -- |
6 |
Did you find and correct the condition? | Go to Step 9 | Go to Step 7 |
Test the IP module high and the IP module low circuits for a open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 8 | |
8 |
Did you complete the replacement? | Go to Step 9 | -- |
9 |
Does the DTC reset? | Go to Step 2 | System OK |