2006 TOYOTA RAV4 ignition

BC–40BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
BC
• If all sensors are normal, a normal system
code is output (the light comes on for 0.25
seconds at intervals of 0.25 seconds).
(4) After the check, disconnect SST from terminals
13 (TC) and 4 (CG) of the DLC3.
(5) Turn the ignition switch OFF.
3. DTC OF TEST MODE FUNCTION (SIGNAL CHECK)
DTC of ABS sensor check function:
DTC of VSC sensor check function:
HINT:
• *: w/ Downhill assist control
• The DTCs in this table are only output in Test Mode.
• The detection of DTCs from C1271/71 to C1274/74 is
completed before the vehicle speed reaches 5 km/h
(3 mph).
• The detection of DTCs from C1275/75 to C1278/78 is
completed before the vehicle speed reaches 45 km/h
(28 mph).
DTC No. Diagnosis Trouble Areas
C1271/71 Low output signal of front speed sensor RH • Front speed sensor RH
• Speed sensor circuit
• Sensor installation
C1272/72 Low output signal of front speed sensor LH • Front speed sensor LH
• Speed sensor circuit
• Sensor installation
C1273/73 Low output signal of rear speed sensor RH • Rear speed sensor RH (for 4WD)
• Skid control sensor RH (for 2WD)
• Speed sensor circuit
• Sensor installation
C1274/74 Low output signal of rear speed sensor LH • Rear speed sensor LH (4WD)
• Skid control sensor LH (2WD)
• Speed sensor circuit
• Sensor installation
C1275/75 Abnormal change in output signal of front
speed sensor RH• Sensor installation
• Speed sensor rotor
• Foreign matter on sensor tip or sensor
rotor
C1276/76 Abnormal change in output signal of front
speed sensor LH• Sensor installation
• Speed sensor rotor
• Foreign matter on sensor tip or sensor
rotor
C1277/77 Abnormal change in output signal of rear
speed sensor RH• Sensor installation
• Speed sensor rotor
• Foreign matter on sensor tip or sensor
rotor
C1278/78 Abnormal change in output signal of rear
speed sensor LH• Sensor installation
• Speed sensor rotor
• Foreign matter on sensor tip or sensor
rotor
C1279/79 Deceleration sensor output voltage
malfunction• Yaw rate sensor
• Sensor installation
C1281/81 Master cylinder pressure sensor output
malfunction• Master cylinder pressure sensor
• Brake pedal load sensing switch (w/ 16-
inch disc)
DTC No. Diagnosis Trouble Areas
C0371/71 Yaw rate sensor Yaw rate sensor
C1379/74* Downhill assist control operation switch Downhill assist control switch

BC–42BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
BC
PROBLEM SYMPTOMS TABLE
HINT:
• Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms
are listed in order of probability in the "Suspected area"
column of the table. Check each symptom by checking the
suspected areas in the order they are listed. Replace parts
as necessary.
• Inspect the fuses and relays related to this system before
inspecting the suspected areas below.
NOTICE:
When replacing the ABS and TRACTION actuator or
sensor, turn the ignition switch OFF.
Vehicle stability control system
Symptom Suspected area See page
ABS, BA and/or EBD does not operate1. Check for DTCs again and make sure that normal system
code displayedBC-47
2. IG power source circuitBC-99
3. Front speed sensor circuitBC-62
4. Rear speed sensor circuitBC-69
5. Check ABS and TRACTION actuator using intelligent tester
(Check ABS and TRACTION actuator operation using ACTIVE
TEST function). If abnormal, check hydraulic circuit for
leakage.BC-180
6. If symptoms still occur even after above circuits in
suspected areas inspected and proved to be normal, replace
ABS and TRACTION actuator (skid control ECU)BC-181
ABS, BA and/or EBD does not operate efficiently1. Check for DTCs again and make sure that normal system
code displayedBC-47
2. Front speed sensor circuitBC-62
3. Rear speed sensor circuitBC-69
4. Stop light switch circuitBC-105
5. Check ABS and TRACTION actuator using intelligent tester
(Check ABS and TRACTION actuator operation using ACTIVE
TEST function). If abnormal, check hydraulic circuit for
leakage.BC-180
6. If symptoms still occur even after above circuits in
suspected areas inspected and proved to be normal, replace
ABS and TRACTION actuator (skid control ECU)BC-181
VSC and/or TRC does not operate1. Check for DTCs again and make sure that normal system
code displayedBC-47
2. IG power source circuitBC-99
3. Check hydraulic circuit for leakage -
4. Front speed sensor circuitBC-62
5. Rear speed sensor circuitBC-69
6. Yaw rate sensor circuitBC-96
7. Steering angle sensor circuitBC-92
8. If symptoms still occur even after above circuits in
suspected areas inspected and proved to be normal, replace
ABS and TRACTION actuator (skid control ECU)BC-181
Sensor signal check cannot be performed1. TS and CG terminal circuitBC-177
2. ABS and TRACTION actuator (skid control ECU)BC-181

BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEMBC–45
BC
2. CHECK SKID CONTROL ECU
(a) Disconnect the A19 ECU connector.
(b) Measure the voltage and resistance of the wire
harness side connector.
HINT:
The voltage cannot be measured with the connector
connected to the skid control ECU as the connector
is water resistant.
Skid control ECU:
HINT:
*1: w/ 16-inch disc
*2: w/ Downhill assist control
*3: for 2WD (w/ AUTO LSD)
If the result is not as specified, there may be a
malfunction on the wire harness side.
F049377E08
Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition
GND2 (A19-1) - Body
groundW-B - Body ground Skid control ECU ground Always Below 1
STP1 (A19-27) - Body
groundL - Body ground Stop light switch input Stop light switch OFF
Brake pedal releasedBelow 1.5 V
STP1 (A19-27) - Body
groundL - Body ground Stop light switch input Stop light switch ON
Brake pedal depressed8 to 16 V
STP2 (A19-21) - Body
groundL - Body ground Stop light relay input Stop light switch OFF
Brake pedal releasedBelow 1.5 V
STP2 (A19-21) - Body
groundL - Body ground Stop light relay input Stop light switch ON
Brake pedal depressed8 to 16 V
STPO (A19-16) - Body
groundW - Body ground Stop light relay output Always 10 to 14 V
+BS (A19-31) - Body
groundW - Body ground Solenoid relay power
supplyAlways 10 to 14 V
IG1 (A19-46) - Body
groundL - Body ground ECU power supply Ignition switch ON 10 to 14 V
HDCS (A19-28)*2 Y - Body ground Downhill assist control
switch inputDownhill assist control
switch ONBelow 1
HDCS (A19-28)*2 Y - Body ground Downhill assist control
switch inputDownhill assist control
switch OFF10 k or higher
FSW+ (A19-7)*1 P - Body ground Brake pedal load sensing
switch inputBrake pedal load sensing
switch ON
Brake pedal released202.4 to 223.7
FSW+ (A19-7)*1 P - Body ground Brake pedal load sensing
switch inputBrake pedal load sensing
switch OFF
Brake pedal released0,95 to 1.05 k
CSW (A19-43)*3 L - Body ground AUTO LSD switch input AUTO LSD switch ON Below 1
CSW (A19-43)*3 L - Body ground AUTO LSD switch input AUTO LSD switch OFF 10 k or higher

BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEMBC–49
BC
• *4: w/ 16-inch disc
• The DTCs can be read by connecting SST (09843-
18040) between the TC and CG terminals of the
DLC3 and observing the blinking pattern of the ABS
and VSC warning lights, or by using an intelligent
tester (see page BC-47).
• This system has a sensor signal check function (see
page BC-28).
2. CHECK WARNING LIGHT AND INDICATOR LIGHT
(a) Release the parking brake lever.
NOTICE:
Before releasing the parking brake lever, set
chocks to hold the vehicle for safety.
HINT:
When the parking brake is applied or the brake fluid
level is low, the brake warning light comes on.
(b) When the ignition switch is turned ON, check that
the ABS, VSC and brake warning lights and the slip,
downhill assist control and AUTO LSD indicator
lights come on and go off in about 3 seconds.
HINT:
If the warning lights do not illuminate, confirm
whether the bulbs have burned out, and also check
for CAN communication system DTCs, since the
skid control ECU and combination meter are
connected by the CAN communication line.
If the warning light remains on, perform relevant
troubleshooting procedures. The relevant
troubleshooting procedures are in the sections listed
in the table below.
C132117E03
Section Title See procedure
ABS Warning Light Remains ONBC-134

BC–50BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
BC
DTC CHECK / CLEAR
1. CHECK DTC (When Using Intelligent Tester)
(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the ignition switch ON.
(c) Turn the tester on.
(d) Read the DTCs by following the prompts on the
tester screen.
HINT:
Refer to the intelligent tester operator's manual for
further details.
2. CLEAR DTC (When Using Intelligent Tester)
(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the ignition switch ON.
(c) Turn the tester on.
(d) Operate the intelligent tester to clear the codes.
HINT:
Refer to the intelligent tester operator's manual for
further details.
3. CHECK DTC (When not Using Intelligent Tester)
(a) Using SST, connect terminals 13 (TC) and 4 (CG) of
the DLC3.
SST 09843-18040
(b) Turn the ignition switch ON.
(c) Read DTCs from the ABS warning light on the
combination meter.
HINT:
• If the ABS warning light does not blink, perform
relevant troubleshooting procedures. The
relevant troubleshooting procedures are in the
sections listed in the table below.
VSC Warning Light Remains ONBC-139
Brake Warning Light Remains ONBC-144
Slip Indicator Light Remains ONBC-152
Downhill assist control Indicator Light Remains ONBC-156
AUTO LSD Indicator Light Remains ONBC-164 Section Title See procedure
B127989E01
B127989E01
H100769E17
Trouble Area See Procedure
ABS warning light circuitBC-134 or BC-138

BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEMBC–51
BC
• As an example, the blinking patterns of the
normal system code and DTCs 11 and 21 are
shown below.
• DTCs are explained in the "DIAGNOSTIC
TROUBLE CODE CHART" (see page BC-57).
(d) After completing the check, disconnect SST from
terminals 13 (TC) and 4 (CG) of the DLC3, and turn
the ignition switch OFF.
HINT:
• If 2 or more malfunctions are detected at the
same time, the lowest numbered DTC is
displayed first.
4. CLEAR DTC (When not Using Intelligent Tester)
(a) Using SST, connect terminals 13 (TC) and 4 (CG) of
the DLC3.
SST 09843-18040
(b) Turn the ignition switch ON.
VSC warning light circuitBC-139 or BC-142
TC and CG terminal circuitBC-174 Trouble Area See Procedure
F100113E03
H100769E17

BC–52BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
BC
(c) Clear the DTCs stored in the skid control ECU by
depressing the brake pedal 8 times or more within 5
seconds.
(d) Check that the ABS and VSC warning lights come
on.
(e) Remove SST from the terminals of the DLC3.
(f) Turn the ignition switch OFF.
HINT:
Clearing the DTCs cannot be performed by
removing the cable from the negative (-) battery
terminal or the ECU-IG1 fuse.
5. END OF DTC CHECK/CLEAR
(a) Turn the ignition switch ON.
(b) Check that the ABS and VSC warning lights go off
within approximately 3 seconds.
(c) Turn the ignition switch OFF.
C135697

BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEMBC–53
BC
FREEZE FRAME DATA
1. FREEZE FRAME DATA
HINT:
• Whenever a DTC is detected or the ABS operates,
the skid control ECU stores the current vehicle
(sensor) state as freeze frame data.
• The skid control ECU stores the number of times
(maximum: 31) the ignition switch has been turned
from OFF to ON since the last time the ABS was
activated. However, if the vehicle was stationary or
running at a low speed (7 km/h [4.3 mph] or less), or if
a DTC is detected, the skid control ECU stops
counting.
• Freeze frame data at the time the ABS operates:
The skid control ECU stores and updates the data
whenever the ABS system operates.
When the ECU stores data at the time a DTC is
detected, the data stored when the ABS operated is
erased.
• Freeze frame data at the time a DTC is detected:
When the skid control ECU stores data at the time a
DTC is detected, no updates will be performed until
the data is cleared.
(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the ignition switch ON.
(c) Turn the tester on.
(d) From the display on the tester, select "FREEZE
FRAME DATA".
B127989E01
Item (Display) Measurement Item Reference Values
FREEZE TIME Elapsed time after freeze frame data recorded Min.: 0 ms
Max.: 500 ms
#IG ON Number of ignition switch ON operations since
freeze frame data stored1 to 31
BUZZER Skid control buzzer signal ON: Skid control buzzer ON
OFF: Skid control buzzer OFF
STOP LAMP SW Stop light switch signal ON: Stop light switch ON
OFF: Stop light switch OFF
PARKING BRAKE SW Parking brake switch signal ON: Parking brake switch ON
OFF: Parking brake switch OFF
BRK PEDAL SW Brake pedal load sensing switch signal ON: Brake pedal released
OFF: Brake pedal depressed