A: No Air Bag Indicator
NO AIR BAG INDICATOR - INOPERATIVE INDICATOR CIRCUITNormal Operation
The AIR BAG indicator is designed to light for 6 (±2) seconds when the ignition switch is turned to RUN. This initial six seconds of air bag indicator illumination is considered normal operation and is called "prove out" of the AIR BAG indicator. If there is an open in the air bag indicator circuit at Pin C2-11, Circuit 608 (BK/Y), a no air bag indicator fault will occur and this prove out will not be seen.
If the computer in the air bag diagnostic monitor detects an open in the air bag indicator circuit and if another system fault exists, then the air bag diagnostic monitor will turn on its internal tone generator (beeper). The beep pattern is five sets of five beeps. The pattern is repeated every 30 minutes while the ignition switch is in RUN. The five beeps do not indicate a code 55 or any other code. The indicator circuitry must be serviced before the diagnostic trouble code can be read.
The air bag diagnostic monitor requires power at Pin C1-6 to energize the air bag indicator circuit properly. Loss of ignition voltage at Pin C1-6 due to open circuit or short to ground will result in a continuous AIR BAG indicator (see Continuous Air Bag Indicator description for details B: The Air Bag Warning Indicator Is Illuminated Continuously) due to the ignition voltage applied to Pin C2-19.
If the air bag diagnostic monitor is disconnected or not firmly plugged in, a shorting bar in the black air bag diagnostic monitor harness connector C2 shorts Pins C2-10 and C2-11, turning the lamp on continuously.
Possible Causes
An inoperative air bag indicator circuit can be caused by:
- A burned out bulb or open wiring in the AIR BAG indicator circuit.
Electrical Schematic - No Air Bag Indicator:
Pinpoint Tests A1 - A3:
