With DRLS

Brake Warning Indicator Always On (DRL equipped)





Test 1-7





Test 8-16





Test 17-23

Circuit Description
The brake warning indicator illuminates when ground is applied to the brake warning indicator control circuit.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
5. This step tests for a shorted brake pressure differential switch.
6. This step tests if the EBCM is applying ground to the brake warning indicator.
8. This step tests for a shorted park brake warning lamp switch.
9. This step tests if the DRL control module is applying ground to the brake warning indicator.
11. This step tests for a shorted ignition switch.
15. This step tests the brake warning indicator control circuit for a short to ground by substituting the IPC and the brake warning indicator lamp with a test lamp.
21. If no short is found, the brake warning indicator supply voltage 2 circuit is shorted to ground or the p/b booster fluid flow and pressure alarm delay module is applying ground to the circuit. Another malfunction is preventing the p/b booster fluid flow alarm from sounding.