SW2 L4-1.9L DOHC VIN 7 (1997)
ABS Light: Description and Operation
DESCRIPTION
As a bulb and system check, the lamp will come On with the key On and the lamp will turn Off after about three seconds. If the lamp. remains On,
or begins to flash, the self-diagnostic system has detected a problem. The lamp will remain on until the ignition is cycled Off. When the ignition is
cycled back On the ABS runs the self diagnostic test to see if the problem is still present. If the problem remains the light will stay On. The telltale
lamp in the instrument cluster has the following functions:
^
If the lamp comes On solid, it informs the driver that a problem has occurred and that the ABS system has been disabled. The vehicle should
be taken for service as soon as possible.
^
There is only one case where the ABS telltale will flash. If a code 87 is set, and subsequently during the same ignition cycle, a fault occurs
such that the rear motor is not at home, the ABS telltale will flash. On subsequent ignition cycles, the ABS telltale will be On solid. When the
rear motor is not at home, the car does not have rear brakes. Consequently, the controller tries to turn On the red brake telltale, but if the
telltale circuit is open or shorted to B+, the telltale cannot be turned On.
OPERATION
The red brake telltale lamp is located in the instrument panel cluster. It will light if any of the following conditions are met:
^
Low brake fluid level in master cylinder.
^
Parking brake switch is closed.
^
It is turned On by the antilock brake control module.
NOTE: For codes 11, 13, 75, 87 and 94, the ABS controller will not turn on the ABS telltale, but will set a bit in the Serial Data message
requesting the Powertrain Control Module (PCM) to turn on the service telltale.
