Safety airbag-6
brown white
red
diagnosis plug
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Failure judgment
1. Failure record (failure code storage)
When ECU determines the error through the cyclic diagnosis and test, SRS-ECU should saves the corresponding code, first
judgment time, final judgment time and number of occurrence in EEPROM.
RS-ECU can stores 6 failures at most, under voltage failure and two collision records (front and side).
Failure code approved by SRS-ECU
Serial No. Failure description Debugging
1 Ignition loop 1 (driver’s front airbag), resistance is too high or open-circuit. Can
2 Ignition loop 1 (driver’s side front airbag), resistance is too low or short-circuit Can
3 Ignition loop 1 (driver’s side front airbag), grounding Can
4 Ignition loop 1 (driver’s side front airbag), connected to power supply Can
5 Ignition loop 2 (passenger side front airbag), resistance is too high or open-circuit. Can
6 Ignition loop 2 (passenger side front airbag), resistance is too low or short-circuit Can
7 Ignition loop 2 (passenger side front airbag), connected to power supply Can
8 Ignition loop 2 (passenger side front airbag), connected to power supply Can
9 Power voltage is high Can
10 Power voltage is low Can
11 Alarm light failure, connected to power supply or lamp is short-circuit Can
12 Alarm lamp is failure- grounding or filament is open-circuit. Can
13 Shortage/failure of algorithm parameter
Cannot (replace the
SRS-ECU)
14 The front collision is recorded
Cannot (replace the
SRS-ECU)
15 Communication failure Can
16 Internal failure (refer to following table)
Cannot (replace the
SRS-ECU)
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