R052

CIRCUIT DESCRIPTION
When there is a frontal crash of sufficient force to activate the dual pole arming sensor and at least one of the two discriminating sensors simultaneously, DTC RO5 1 is set. At this time the DERM will record information regarding SIR system status and vehicle status in EEPROM. DTC RO52 will set when the DERM has stored information regarding eight frontal crash events.

DTC WILL SET WHEN
The DERM attempts to store frontal crash information and finds the EEPROM data area full. This test is run each time the DERM stores or attempts to store information regarding a frontal crash event.

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

DTC WILL CLEAR WHEN
A scan tool "Clear Codes" command is received by the DERM. If, at the next ignition "ON" after receiving a "Clear Codes" command, the DERM detects the data area is full, a history diagnostic trouble code is set. This allows the "AIR BAG" warning lamp to illuminate should any additional malfunctions be detected.