LS 460 AWD V8-4.6L (1UR-FSE) (2009)
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(1) Install a hydro LSPV gauge (SST) and brake pedal effort gauge.
SST: 09709-29018
(2) Bleed air from the hydro booster pressure gauge.
(3) Move the shift lever to the P position. Connect the Techstream to the DLC3 with the parking brake applied.
(4) Turn the engine switch on (IG).
(5) Clear the DTC See: Antilock Brakes / Traction Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
(c) Check the wheel cylinder pressure sensor and master pressure sensor.
(1) Turn on the Techstream. Select "Voltage of Master Cylinder Sensor", "Voltage of Master Cylinder Sensor 2", "FR Wheel Cylinder
Pressure Sensor", "FL Wheel Cylinder Pressure Sensor" and "RR Wheel Cylinder Pressure Sensor", "RL Wheel Cylinder Pressure
Sensor".
(2) Check the brake pedal effort gauge, hydro booster pressure gauge reading, and output pressure voltage.
Standard voltage:
Standard voltage:
Standard voltage:
Standard voltage:
Standard voltage:
If incorrect, troubleshoot the brake system See: Testing and Inspection.
(d) Check the accumulator pressure sensor.
(1) Move the shift lever to the P position. Apply the parking brake and connect the Techstream to the DLC3.
(2) Turn the engine switch on (IG).
(3) Turn on the Techstream. Select the Accumulator Pressure Sensor ("ACC PRESS SENS").
(4) Temporarily operate the pump motor by depressing the brake pedal 4 or 5 times.
(5) After confirming that the pump motor stops, check the pressure output voltage.
Standard voltage:
2.6 to 3.8 V
