GS 450h V6-3.5L (2GR-FSE) Hybrid (2007)
Brake Master Cylinder: Testing and Inspection
On-Vehicle Inspection
BRAKE MASTER CYLINDER
ON-VEHICLE INSPECTION
NOTICE: A DTC may be stored during the inspection procedure. Be sure to clear the DTC and check that a normal system code is output after the
inspection is finished.
1. CHECK BRAKE MASTER CYLINDER SUBASSEMBLY
(a)
Check battery voltage.
Standard battery voltage: 10 to 14 V (while the power switch is OFF)
(b) Connect intelligent tester and pedal effort gauge.
(1) Connect the pedal effort gauge.
(2) Move the shift lever to the P position. Apply the parking brake and connect the intelligent tester to the DLC3.
(3) Turn the power switch ON (IG).
(4) Clear the DTC.
(c)
Check operation without brake booster.
(1) Check and adjust the brake pedal height.
(2) Check and adjust the brake pedal stroke sensor.
(3) Check the pedal free play.
(4) Check the pedal reserve distance.
(5) Turn on the intelligent tester and select "ELECTRONICALLY CONTROLLED BRAKE SYSTEM INVALID" to prohibit the brake
control.
(6) Monitor "MAS CYL PRS 1", "MAS CYL PRS 2", "PEDAL STROKE" and "PEDAL STROKE 2" using the intelligent tester.
(7) Check the value output from "MAS CYL PRS 1", "MAS CYL PRS 2", "PEDAL STROKE" and "PEDAL STROKE 2" by depressing
the brake pedal.
Standard voltage
(8) Finish the brake control prohibition on the intelligent tester.
2. CHECK STROKE SIMULATOR
(a)
Check battery voltage.
Standard battery voltage: 10 to 14 V (while the power switch is OFF)
(b) Connect intelligent tester and pedal effort gauge.
(1) Connect the pedal effort gauge.
(2) Move the shift lever to the P position. Apply the parking brake and connect the intelligent tester to the DLC3.
(3) Turn the power switch ON (IG).
(4) Clear the DTC.
(c)
Check operation without brake booster.
(1) Check and adjust the brake pedal height.
(2) Check and adjust the brake pedal stroke sensor.
(3) Check the pedal free play.
(4) Check the pedal reserve distance.
(5) Turn on the intelligent tester and select "ELECTRONICALLY CONTROLLED BRAKE SYSTEM INVALID" to prohibit the brake
control.
(6) Monitor "MAS CYL PRS 1", "MAS CYL PRS 2", "PEDAL STROKE" and "PEDAL STROKE 2" using the intelligent tester.
(7) Check the value output from "MAS CYL PRS 1", "MAS CYL PRS 2", "PEDAL STROKE" and "PEDAL STROKE 2" by depressing
the brake pedal.