DTC 17

Diagnostic Chart:

Wiring Diagram:

CIRCUIT DESCRIPTION
When the ignition switch is turned to "RUN," 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 1403 and 1404 and connector terminal contact.

DTC WILL SET WHEN
The voltage difference between "Passenger Side High" terminal "1" and "Passenger Side Low" terminal "4" is above or equal to 0.400 volts 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 "1" and "Passenger Side Low" terminal "4" is below 0.400 volts for 500 milliseconds during "Continuous Monitoring."

DTC CHART TEST DESCRIPTION
Number(s) below refer to circled number(s) on the diagnostic chart.
1. This test verifies proper connection of the passenger inflator module yellow 2-way connector and checks for a high resistance or open, within the connector.
2. This test isolates the high resistance, or open, to either the passenger inflator module or CKTs 1403 and 1404.
3. A high resistance has been detected in CKTs 1403 and/or 1404. This test checks CKT 1403 for high resistance or an open.
4. This test checks CKT 1404 for high resistance or an open.
5. If the malfunction cannot be found in the external wiring, the SDM may be malfunctioning.
6. If the passenger inflator module pigtail connector terminals are damaged or corroded, the passenger inflator module must be replaced.

DIAGNOSTIC AIDS
An intermittent condition is likely to be caused by a poor connection at the passenger inflator module harness connector terminals "A" and "B," SDM terminals "1" and "4," or an open in CKT 1403 or CKT 1404. Monitoring DTC 17 (to see if current or history) while moving wires, may help locate the circuit malfunction.