Supplemental Inflatable Restraint (SIR)

Code 71:

DERM Circuit Detail:

DESCRIPTION:

Code 71 is an internal DERM fault and will set if any of the following conditions are detected:

1. DERM power supply reserve voltage charge or discharge time failure

2. DERM power supply reserve voltage less than 13.0 volts or greater than 19.6 volts for 500 milliseconds

3. DERM is unable to read from or write to EEPROM

4. 36VLR is greater than 44.0 volts for 500 milliseconds.

TEST CONDITION:

Tested during "Turn-on" and every l00 milliseconds during "Continuous Monitoring".

FAILURE CONDITIONS:

Code 71 is set when an internal DERM fault is detected during "Turn-on" or "Continuous Monitoring".

CONDITIONS TO CLEAR:

Current Code 71 will clear if no internal DERM faults are detected for 500 milliseconds.

ACTION TAKEN:

DERM turns on the "INFLATABLE RESTRAINT" indicator.