On-Vehicle Inspection
BRAKE CONTROL: BRAKE ACTUATOR: ON-VEHICLE INSPECTION
1. CHECK BRAKE ACTUATOR ASSEMBLY OPERATION
(a) Pre-check preparation
(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 "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".
(b) Check the FR system solenoid (SLAFR Solenoid Current, SLRFR Solenoid Current, Electronically Controlled Brake System Solenoid (SMC1), Electronically Controlled Brake System Solenoid (SMC2)).
* Select "SLAFR Solenoid Current". Press "->" and check the output voltage.
NOTICE:
Do not depress the brake pedal.
HINT
It takes approximately 35 seconds to complete the check.
Standard voltage:
* If incorrect, troubleshoot the brake system Testing and Inspection.
(c) Check the FL system solenoid (SLAFL Solenoid Current, SLRFL Solenoid Current, Electronically Controlled Brake System Solenoid (SMC1), Electronically Controlled Brake System Solenoid (SMC2)).
* Select "SLAFL Solenoid Current". Press "->" and check the output voltage.
NOTICE:
Do not depress the brake pedal.
HINT
It takes approximately 35 seconds to complete the check.
Standard voltage:
(d) If incorrect, troubleshoot the brake system Testing and Inspection.
(e) Check the RR system solenoid (SLARR Solenoid Current, SLRRR Solenoid Current, Electronically Controlled Brake System Solenoid (SMC1), Electronically Controlled Brake System Solenoid (SMC2)).
* Select "SLARR Solenoid Current". Press "->" and check the output voltage.
NOTICE:
Do not depress the brake pedal.
HINT
It takes approximately 35 seconds to complete the check.
Standard voltage:
(f) If incorrect, troubleshoot the brake system Testing and Inspection.
(g) Check the RL system solenoid (SLARL Solenoid Current, SLRRL Solenoid Current, Electronically Controlled Brake System Solenoid (SMC1), Electronically Controlled Brake System Solenoid (SMC2)).
* Select "SLARL Solenoid Current". Press "->" and check the output voltage.
NOTICE:
Do not depress the brake pedal.
HINT
It takes approximately 35 seconds to complete the check.
Standard voltage:
(h) If incorrect, troubleshoot the brake system Testing and Inspection.
(i) Check the changeover solenoid valves (SMC1, SMC2).
(1) Select and enter "Electronically Controlled Brake system Invalid" to prohibit the brake control.
(2) Check that the brake control warning light comes on.
(3) Check the output voltage by depressing the pedal.
Standard voltage:
Difference in output voltage between "MAS CYL PRESS 1" and "FR W/C SENS" is less than 0.4 V.
Difference in output voltage between "MAS CYL PRESS 2" and "FL W/C SENS" is less than 0.4 V.
(4) Press the return key on the Techstream and cancel brake control prohibition (ELECTRONICALLY CONTROLLED BRAKE SYSTEM INVALID).
2. CHECK PRESSURE SENSOR OPERATION
(a) Check the battery voltage.
Standard voltage:
11 to 14 V (during engine stop)
(b) Connect the hydro booster pressure gauge and pedal effort gauge.
(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 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 (17 inch brake caliper):
Standard voltage (18 inch, 19 inch brake caliper):
Standard voltage (17 inch brake caliper):
Standard voltage (18 inch, 19 inch brake caliper):
Standard voltage (17 inch brake caliper):
Standard voltage (18 inch, 19 inch brake caliper):
Standard voltage (17 inch brake caliper):
Standard voltage (18 inch, 19 inch brake caliper):
(3) If incorrect, troubleshoot the brake system 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
(6) If incorrect, troubleshoot the brake system Testing and Inspection.