Toyota RAV4 Service Manual: Calibration
- Description
- After replacing components relating to the vsc or
performing "front wheel alignment adjustment",
clear and read the sensor calibration data.
- Follow the chart to perform calibration.

- Clear zero point calibration data (when using
intelligent tester)

- Clear the zero point calibration data.
- Connect the intelligent tester (with can vim) to
the dlc3.
- Turn the ignition switch on.

- Operate the intelligent tester to erase the codes
(select "reset memory").
Hint:
Refer to the intelligent tester operator's manual
for further details.
- Using the intelligent tester, perform the zero
point calibration of the yaw rate and deceleration
sensor.
Caution:
If the ignition switch is turned on for more
than 15 seconds with the shift lever in the p
position after zero point of the yaw rate and
acceleration sensor has been cleared, only
the zero point of the yaw rate sensor will be
stored. If the vehicle is driven under this
condition, the skid control ecu will
recognize that zero point calibration of the
acceleration sensor is not completed and will
indicate that there is a malfunction in the
vsc system using the indicator light.
- Preform zero point calibration of yaw rate and
deceleration sensor (when using intelligent tester)
Notice:
- While obtaining the zero point, do not vibrate the
vehicle by tilting, moving or shaking it and keep it
stationary. (Do not start the engine.)
- Perform this on a level surface (with an inclination
of less than 1°).
- Procedures for test mode.
- Check that the shift lever is in the p position and
apply the parking brake.
Notice:
Dtcs c1210/36 and c1336/39 will be
recorded if the shift lever is not the p
position (see page bc-88).
- Connect the intelligent tester (with can vim) to
the dlc3.
- Turn the ignition switch on.

- Set the intelligent tester to test mode (select
"test mode").
Hint:
Refer to the intelligent tester operator's manual
for further details.
- Obtain the zero point of the yaw rate and
deceleration sensor.

- Keep the vehicle stationary on a level surface for
2 seconds or more.
- Check that the vsc warning light blinks as
shown in the illustration.

Hint:
- If the vsc warning light does not blink,
perform the zero point calibration again.
- The zero point calibration is performed only
once after the system enters test mode.
- Calibration cannot be performed again until
the stored data is cleared once.
- Turn the ignition switch off.
- Clear zero point calibration data (when not
using intelligent tester)

- Clear the zero point calibration data.
- Turn the ignition switch on.
- The warning light and indicator light come on for
3 seconds to indicate that the initial check is
completed.
- Using sst, connect and disconnect terminals 12
(ts) and 4 (cg) of the dlc3 4 times or more
within 8 seconds.
Sst 09843-18040
- Check that the vsc warning light comes on.
- Remove sst from the terminals of the dlc3.
- Using a check wire, perform the zero point
calibration of the yaw rate and deceleration
sensor.
Caution:
If the ignition switch is turned on for more
than 15 seconds with the shift lever in the p
position after zero point of the yaw rate and
acceleration sensor has been cleared, only
the zero point of the yaw rate sensor will be
stored. If the vehicle is driven under this
condition, the skid control ecu will
recognize that zero point calibration of the
acceleration sensor is not completed and will
indicate that there is a malfunction in the
vsc system using the indicator light.
- Perform zero point calibration of yaw rate and
deceleration sensor (when not using intelligent
tester)
Notice:
- While obtaining the zero point, do not vibrate the
vehicle by tilting, moving or shaking it and keep it
stationary. (Do not start the engine.)
- Perform this on a level surface (with an inclination
of less than 1°).
- Procedures for test mode.
- Turn the ignition switch off
- Using sst, connect terminals 12 (ts) and 4
(cg) of the dlc3.
Sst 09843-18040
- Check that the shift lever is in the p position and
apply the parking brake.

Notice:
Dtcs c1210/36 and c1336/39 will be
recorded if the shift lever is not the p
position (see page bc-88).
- Obtain the zero point of the yaw rate and
deceleration sensor.
- Turn the ignition switch on.
- Keep the vehicle stationary on a level surface for
2 seconds or more.
- Check that the vsc warning light blinks as
shown in the illustration.

Hint:
- If the vsc warning light does not blink,
perform the zero point calibration again.
- The zero point calibration is performed only
once after the system enters test mode.
- Calibration cannot be performed again until
the stored data is cleared once.
- Turn the ignition switch off.
Check for intermittent problems
Hint:
A momentary interruption (open circuit) in the connectors
and/or wire harness between the sensors and ecus can
be detected by using the ecu data list fun ...
Hint:
By switching the skid control ecu from normal mode to
test mode, abnormality detection sensitivity is enhanced
and troubleshooting can be conducted efficiently.
Perform a sensor check ...
Other materials:
Displays, control elements
In the vicinity of the steering wheel
Light switch element
Turn signal indicator, high beams
Instrument cluster
Wipers
Start/Stop button
Indicator/warning lights
Instrument cluster
The indicator/warning lights can light up in a variety
of combinations and colors.
Several of the lights are ...
Source voltage drop
Description
The srs is equipped with a voltage-increase circuit (dc-dc converter) in the
center airbag sensor in
case the source voltage drops.
When the source voltage drops, the voltage-increase circuit (dc-dc converter)
functions to increase the
voltage of the srs to a normal working lev ...
Active test
Hint:
Performing an active test enables components
including the relays, vsv (vacuum switching valve) and
actuators, to be operated without removing any parts.
The active test can be performed with the intelligent
tester. Performing the active test as the first step of
troubleshooting is one ...