DTC 86

DTC 86: Red Brake Warning Lamp Activated By ABS:

DTC 86 EBCM Turned "On" The Red "Brake" Warning Lamp:

Circuit Description:
This DTC is provided as an information only test, and reflects the status of the command issued by the ABS EBCM to illuminate the red brake warning lamp. If another diagnostic DTC issues a command to illuminate the red "BRAKE" warning lamp, DTC AO86 will be stored in EEPROM as a history DTC at the conclusion of the ignition cycle.

Test Description:
Number(s) below refer to circled number(s) on the diagnostic chart.
1. This step serves to identify if a DTC other than DTC AO86 commanded the red "BRAKE" warning lamp "ON."

Diagnostic Aids:
Any ABS mechanical DTC that issues a command to illuminate the red "BRAKE" warning lamp will also result in DTC AO86 being stored in EEPROM during shut down. These DTCs are: AO38, A041, A042, A045, A046, A047, AO48 and A051. If the motors are not in their home position, certain electrical DTCs will also command the red brake warning lamp "ON." These DTCs are: A014, A018, A055, A056, A057, A0587, A061, A062, AO63, AO64, AO65, A066, AO67, AO68, A071 and A072.

If any of these DTCs are indicated along with DTC A086, they must be corrected prior to addressing a DTC A086 malfunction.