FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.
Home >> Lexus >> 2007 >> GS 350 RWD V6-3.5L (2GR-FSE) >> Repair and Diagnosis >> Brakes and Traction Control >> Antilock Brakes / Traction Control Systems >> Testing and Inspection >> Programming and Relearning >> Electronically Controlled Brake System >> Initialization

Initialization

INITIALIZATION

1. DESCRIPTION
a. Perform initialization of linear solenoid valve and calibration when the skid control ECU, brake actuator or brake pedal stroke sensor is replaced. Follow the procedure to perform initialization.






HINT:
- If there is a problem with battery (12 V) voltage, initialization of linear solenoid valve and calibration cannot be completed normally. Check the battery voltage before performing initialization of linear solenoid valve and calibration.
- If the actuator's temperature is high, initialization of linear solenoid valve and calibration may not be completed normally. If so, wait until the temperature drops and then perform initialization of linear solenoid valve and calibration.
- If the engine switch is turned off, the brake pedal is operated or vehicle speed is input while the linear solenoid valve offset learning is being performed, the learning will be canceled.

2. CLEAR STORED VALUE OF INITIALIZATION OF LINEAR SOLENOID VALVE AND CALIBRATION (WHEN USING INTELLIGENT TESTER:)




a. Connect the intelligent tester to the DLC3.
b. Move the shift lever to the P position.
c. Turn the engine switch on (IG) with the brake pedal released.
d. Clear the stored value of initialization of linear solenoid valve and calibration by operating the intelligent tester.

HINT: Refer to the intelligent tester operator's manual for further details.

3. PERFORM INITIALIZATION OF LINEAR SOLENOID VALVE AND CALIBRATION (WHEN USING INTELLIGENT TESTER:)
a. Connect the intelligent tester to the DLC3.
b. Move the shift lever to the P position.
c. Turn the engine switch on (IG) with the brake pedal released.

NOTE:
- If the linear solenoid valve offset learning is performed without turning the engine switch on (IG), the learning process may not be completed properly because of insufficient battery voltage.
- When the linear solenoid valve offset learning is interrupted, or the learning process is performed with the shift lever not in the P position, DTC C1345/66 will be stored.

d. Set the intelligent tester to Test Mode (select "Electronically Controlled Brake System UTILITY").

HINT: Refer to the intelligent tester operator's manual for further details.

e. Leave the vehicle stationary without depressing the brake pedal for 1 or 2 minutes.




f. Check that the interval between blinks of the brake control warning light changes from 1 second to 0.25 seconds.

HINT:
- The time needed to complete initialization of linear solenoid valve and calibration varies depending on battery voltage.
- The brake control warning light blinks at 1 second intervals during the initialization of linear solenoid valve and calibration. The brake control warning light blinks at 0.25 seconds intervals if the Test Mode is normal.

g. When the brake control warning light changes to the Test Mode display, check that DTC C1345/66, which indicates trouble with stroke sensor zero point learning, is not output.
h. Enter the normal mode from the Test Mode by following the intelligent tester prompts.

HINT: Refer to the intelligent tester operator's manual for further details.

4. CLEAR STORED VALUE OF INITIALIZATION OF LINEAR SOLENOID VALVE AND CALIBRATION (WHEN USING SST CHECK WIRE:)




a. Move the shift lever to the P position.
b. Turn the engine switch on (IG) with the brake pedal released.
c. Using SST, connect and disconnect terminals TS and CG of the DLC3 4 times or more within 8 seconds.

SST 09843-18040




d. Check that no codes other than ABS code 42, VSC code 45 and Electronically Controlled Brake System code 48, 66, or 95 are stored in the diagnostic system.

HINT: The ABS warning light and multi-information display do not indicate the normal system code.

e. Remove SST from the terminals of the DLC3.

5. PERFORM INITIALIZATION OF LINEAR SOLENOID VALVE AND CALIBRATION (WHEN USING SST CHECK WIRE:)
a. Turn the engine switch off.




b. Using SST, connect terminals TS and CG of the DLC3.

SST 09843-18040

c. Move the shift lever to the P position.
d. Turn the engine switch on (IG) with the brake pedal released.

NOTE:
- If the linear solenoid valve offset learning is performed without turning the engine switch on (IG), the learning process may not be completed properly because of insufficient battery voltage.
- When the linear solenoid valve offset learning is interrupted, or the learning process is performed with the shift lever not in the P position, DTC C1345/66 will be stored.

e. Leave the vehicle stationary without depressing the brake pedal for 1 or 2 minutes.




f. Check that the interval between blinks of the brake control warning light changes from 1 second to 0.25 seconds.

HINT:
- The time needed to complete initialization of linear solenoid valve and calibration varies depending on the battery voltage.
- The brake control warning light blinks at 1 second intervals during the initialization of linear solenoid valve and calibration and changes to the Test Mode display.
- The brake control warning light blinks at 0.25 seconds intervals if the Test Mode is normal.

g. When the brake control warning light changes to the Test Mode display, check that DTC C1345/66, which indicates trouble with stroke sensor zero point learning, is not output.
h. Turn the engine switch off and disconnect SST from the DLC3.
pro multis Credits:Operation CHARM About Operation CHARM