With Driver & Passenger SIR System

TEST CONDITION
Tested every 100 milliseconds during "Continuous Monitoring."

FAILURE CONDITIONS
DTC 23 sets when voltage at "Driver Side Low" input (B8) is greater than 50% of "Driver 36VLR" output (A4) for 500 milliseconds.

CONDITIONS TO CLEAR
Current DTC 23 clears when voltage at "Driver Side Low" input (B8) is less than or equal to 50% of "Driver 36VLR" output (A4) for 500 milliseconds.

ACTION TAKEN
DERM turns on "INFLATABLE RESTRAINT" warning lamp.

DESCRIPTION
DTC 23 sets when failure conditions are met during DERM's "Continuous Monitoring" Tests. These tests are performed for one second after initial "Turn-on" Tests are completed, and every 100 milliseconds while "IGNITION 1" voltage is present at DERM (after "Initiator Circuit Resistance" Tests are completed). "Continuous Monitoring" Tests check both deployment loops for continuity from DERM's "36VLR" outputs through Dual Pole Arming Sensor, Inflator Modules, SIR Coil (driver's side only) and Discriminating Sensors to ground. DTC 23 only, indicates poor terminal contact at Passenger Compartment Discriminating Sensor (terminal D). DTCs 23 and 24 together indicate an open in "Driver Side Low" circuit between steering column connector and Passenger Compartment Discriminating Sensor.

NOTES ON FAULT TREE
1. Checks "Driver Side Low" circuit for an open between steering column and Passenger Compartment Discriminating Sensor connectors.
2. Checks Passenger Compartment Discriminating Sensor and steering column connectors for proper terminal contact. Refer to "Intermittents and Poor Connections" to properly check terminals.
3. Checks Passenger Compartment Discriminating Sensor connector for proper terminal contact. Refer to "Intermittents and Poor Connections" to properly check terminals.