DTC 17

Wiring Diagram:

CIRCUIT DESCRIPTION

When the ignition switch is turned to "ON," the SDM will perform tests to diagnose critical malfunctions within itself. Upon passing these tests "Ignition 1," 23 VLR, and deployment loop voltages are measured to ensure they are within their respective normal voltage ranges. During "Deployment Loop Continuity" and "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 Side High" and "Passenger Side Low," the SDM calculates the combined resistance of the passenger inflator module, harness wiring CKTs Y/R and Y and connector terminal contact.

DTC WILL SET WHEN

The voltage difference between "Passenger Side High" terminal "4" and "Passenger Side Low" terminal "3" is above or equal to a specified value for 500 milliseconds during "Deployment Loop Continuity" test or "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 Side High" terminal "4" and "Passenger Side Low" terminal "3" is below a specified value for 500 milliseconds during "Continuous Monitoring."

DTC CHART TEST DESCRIPTION

Numbers below refer to circled numbers on the diagnostic chart.

1. This test verifies proper connection of the passenger inflator module yellow 4-way connector.

2. This test checks for proper contact and/or corrosion of the yellow 4-way connector terminals.

3. This test checks for a malfunctioning passenger inflator module.

4. This test determines whether the malfunction is in the wiring.

DIAGNOSTIC AIDS

An intermittent condition is likely to be caused by a poor connection at the passenger inflator module harness connector terminals "B1" and "B2," SDM terminals "3" and "4," or an open in CKT Y/R or CKT Y.