R035

CIRCUIT DESCRIPTION
During normal, non-deployment operation of the SIR system a small amount of current flows through both the driver and passenger deployment loops. The diagnostic resistors within the dual pole arming sensor and the discriminating sensors along with the resistance of the inflator modules cause voltage drops within the deployment loops. The DERM monitors the voltage at "Driver Side Low," terminal "B8" and "Passenger Side Low" terminal "B7" to detect shorts or opens within the deployment loops. When the measured voltage at either terminal is within a specified percentage of its respective "36 VLR" power supply voltage for 500 milliseconds DTC RO35 is set.

DTC WILL SET WHEN
The voltage measured at "Driver Side Low" terminal "B8" or at "Passenger Side Low" terminal "B7" is within a specified percentage of its respective "36 VLR" power supply voltage for 500 milliseconds. This test is run every 100 milliseconds during the "Continuous Monitoring" tests.

ACTION TAKEN
DERM turns "ON" the "AIR BAG" warning lamp and sets a diagnostic trouble code.

DTC WILL CLEAR WHEN
The voltages measured at "Driver Side Low" terminal "B8" and "Passenger Side Low" terminal "B7" are both above or below the percentage of their respective "36 VLR" power supply voltage which sets DTC RO35.

DTC CHART TEST DESCRIPTION
Number(s) below refer to circled number(s) on the diagnostic chart.
1. This test checks for an open in the RH discriminating sensor between terminal "A" and the splice.
2. This test checks for high resistance between the passenger inflator module and the RH discriminating sensor.
3. This test checks for an open between the driver inflator module and the RH discriminating sensor.
4. This test checks for increased resistance in the RH discriminating sensor.
5. This test checks for an open ground feed to the RH discriminating sensor.
6. This test checks for an open in the LH discriminating sensor between terminal "A" and the splice.
7. This test checks for high resistance between the RH discriminating sensor and the LH discriminating sensor.
8. This test checks for increased resistance in the forward discriminating sensor.
9. This test checks for an open between the LH discriminating sensor and the forward discriminating sensor.
10. This test checks for an open in the LH discriminating sensor between terminal "B" and the splice.
11. This test checks for an open between the LH discriminating sensor and the forward discriminating sensor.
12. This test checks for an open ground feed to the LH discriminating sensor.
13. This test determines whether the malfunction is due to the dual pole arming sensor.

DIAGNOSTIC AIDS
An intermittent condition is likely to be an improper connection at any of the discriminating sensor terminals, an open in either ground feed to the discriminating sensors, an open discriminating sensor interconnect circuit, a malfunctioning dual pole arming sensor or a malfunctioning discriminating sensor.