Supplemental Inflatable Restraint (SIR)

Code 35:

DERM Circuit Detail:

DESCRIPTION:

Code 35 is set when the voltage the Sense Low input (terminal A6) is between 61% and 78% of 36VLR
output voltage for 500 milliseconds during the "Continuous Monitoring" tests performed by the DERM. The "Continuous Monitoring" tests are performed by the DERM after the initial "Turn-on" tests are completed and are performed every 100 milliseconds while Ignition 1 voltage is present at the DERM. If one of the Discriminating Sensors is open the voltage at the Sense Low input will increase due to the increase in the resistance of the Discriminating Sensor section of the deployment loop and Code 35 will set.

TEST CONDITION:

Tested every 100 milliseconds during "Continuous Monitoring".

FAILURE CONDITIONS:

Code 35 will set if the voltage at the Sense Low input (terminal A6) is between 61% and 78% of 36VLR output voltage for 500 milliseconds.

CONDITIONS TO CLEAR:

Current Code 35 will clear if the voltage at the Sense Low input (terminal A6) is between 41% and 61% of 36VLR output voltage for 500 milliseconds.

ACTION TAKEN:

DERM turns on the "INFLATABLE RESTRAINT" indicator lamp.

NOTES ON FAULT TREE:

1. Checks the resistance and ground path of the Forward Discriminating Sensor.

2. Determines if fault is in the Forward Discriminating Sensor.

3. Determines if fault is in the Dual Sensor or in the Dual Sensor Ground Path (CKT 1003).

4. Determines if fault is an open circuit in the Forward Sensor Ground path (circuit 1003) or an open circuit in the harness between the Dual Sensor and the Forward Sensor (CKT 349).