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Home >> Toyota >> 2003 >> Landcruiser V8-4.7L (2UZ-FE) >> Repair and Diagnosis >> Brakes and Traction Control >> Antilock Brakes / Traction Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Component Tests >> VSC Sensor Check (Test Mode)

VSC Sensor Check (Test Mode)

In case of not using hand-held tester:
VSC SENSOR CHECK (TEST MODE)

NOTE: When having replaced the yaw rate sensor, deceleration sensor and/or ECU, perform zero point calibration of the yaw rate and deceleration sensors (See step 7.).

HINT: If the ignition switch is turned from ON to ACC or LOCK during test mode, DTC will be erased.

a. Procedures for test mode:




1. Turn the ignition switch OFF.
2. Check that the shift lever position is at P position, turn the steering wheel to the neutral position.
3. Using SST, connect terminals Ts and E1 of DLC1.

SST 09843-18020

4. Start the engine.




5. Check that the VSC TRAC warning light blinks.

HINT: If the VSC TRAC warning light does not blink, inspect the VSC TRAC warning light circuit and Ts terminal circuit.

Turn the steering wheel either to left or right for 450° or more from the vehicle stationary condition, and turn back the steering wheel to the straight ahead position.

b. Keep the vehicle in a stationary on a level place for 1 sec.or more.




c. Check the yaw rate sensor.

Shift the shift lever to the D position and drive the vehicle at the vehicle speed of approx. 5 km/h (3 mph), turn the steering wheel either to left or right for 90° or more, and maintain 180° circular drive for the vehicle.

Stop the vehicle and shift the shift lever to the P position, check that the VSC buzzer sounds for 3 sec.

If the VSC buzzer sounded, the sensor check is in normal completion.

If the VSC buzzer does not sound, do the sensor check again. If the VSC buzzer still won't sound, check the VSC buzzer circuit, then do the sensor check again.

Trouble area
VSC buzzer circuit

HINT:
- Drive the vehicle circularly by 180°. At the end of the turn, the direction of the vehicle should be within 180° ± 5° of its start position.
- Do not spin the wheels.

d. Read the DTC.

1. Using SST, connect terminals Tc and E1 of DLC1 or Tc and CG of DLC3.

SST 09843-18020 or 09843-18040

2. Read the number of blinks of the VSC TRAC warning light.






HINT:
- See the list of DTC shown.
- If every sensor is normal, a normal code is output. (A cycle of 0.25 sec. ON and 0.25 sec. OFF is repeated.)
- If 2 or more malfunctions are indicated at the same time, the lowest numbered code will be displayed 1st.

3. After doing the check, disconnect the SST from terminals of DLC1 or terminals DLC1 and DLC3 and turn ignition switch OFF.

SST 09843-18020 or 09843-18040
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