Supplemental Inflatable Restraint (SIR)

Diagnostic Chart:

Wiring Diagram:

CIRCUIT DESCRIPTION
When there is an open in the passenger inflator module the resistance between "Passenger Side High" terminal "A7" and "Passenger Side Low" terminal "B7" increases. This causes a larger voltage drop from the "Passenger Side High" to the "Passenger Side Low" across a resistor inside the DERM which connects these two terminals together. The increase in the voltage difference between "Passenger Side High" and "Passenger Side Low" is detected by the DERM during the "Continuous Monitoring" tests and DTC 17 is set.

DTC WILL SET WHEN
The voltage difference between "Passenger Side High" terminal "A7" and "Passenger Side Low" terminal "B7" is above or equal to a specified value for 500 milliseconds.

ACTION TAKEN
DERM 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 "A7" and "Passenger Side Low" terminal "B7" is below a specified value for 500 milliseconds.

DTC CHART TEST DESCRIPTION
Number(s) below refer to circled number(s) on the diagnostic chart.
1. This test determines whether the malfunction is in the passenger inflator module.

DIAGNOSTIC AIDS
An intermittent condition is likely to be caused by an improper connection to the passenger inflator module or a malfunctioning passenger inflator module.