Montero XLS 4WD V6-3.5L SOHC (2001)
Hydraulic Brake Booster: Symptom Related Diagnostic Procedures
Symptom Chart For Inspection Procedures
SYMPTOM CHART
NOTE: The Hydraulic Brake Booster (HBB) accumulates the high-pressure oil in the accumulator by the activation of the pump motor to assist the
brake power. Even though the working sound of the pump motor can be heard during operation, this sound is usually generated at normal operation of
the HBB and is not an indication of a malfunction.
Inspection Procedure 1: Brake Light Does Not Illuminate IG-on
INSPECTION PROCEDURE 1: The brake warning light does not illuminate when the ignition switch is turned to the "ON" position just after
the engine start.
Brake Warning Light Circuit