DTC 17

DTC 17 Passenger Deployment Loop Open




Circuit Description:
When the ignition switch is turned "ON", the Sensing and Diagnostic Module (SDM) will perform tests to diagnose critical malfunctions within itself. Upon passing these tests, "ignition 1", and deployment loop voltages are measured to ensure they are within their respective normal voltage ranges. During "Continuous Monitoring" diagnostics, a fixed amount of current is flowing in the deployment loop. This produces proportional voltage drops in the loop. By monitoring the voltage difference between "Passenger Bag High" and "Passenger Bag Low", the SDM calculates the combined resistance of the passenger air bag assembly, harness wiring Circuits(CKTs) IB07-YELLOW/GREEN and IB08-YELLOW/RED, and connector terminal contact.

DTC Will Set When:
The voltage difference between "Passenger Bag High" terminal "15" and "Passenger Bag Low" terminal "16" is above or equal to a specified value for 500 milliseconds during "Continuous Monitoring".

Action Taken:
SDM turns "ON" the "AIR BAG" warning lamp and sets a diagnostic trouble code.

DTC Will Clear When:
The voltage difference between "Passenger Bag High" terminal "15" and "Passenger Bag Low" terminal "16" is below a specified value for 500 milliseconds during "Continuous Monitoring".

DTC 17 (Steps 1 - 4):

DTC 17 (Steps 5 - 7):

DTC Chart Test Description:
Number(s) below refer to step number(s) on the diagnostic chart:

2. This test determines whether the malfunction is in the Sensing and Diagnostic Module (SDM).
3. This test verifies proper connection of the yellow 2-pin connector.
4. This test cheeks for proper contact and/or corrosion of the shorting clip in the yellow 2-pin connector terminals.
5. The test checks for a malfunctioning passenger air bag assembly.
6. This test determines whether there is an open in the wiring.

Diagnostic Aids:
An intermittent condition is likely to be caused by a poor connection at the passenger air bag assembly harness connector terminals "1" and "2," SDM terminals "15" and "16," or an open in Circuits IB07-YELLOW/GREEN and IB08-YELLOW/RED.