BRC-2 ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ... 35
Removal and Installation ........................................ 35
COMPONENTS ................................................... 35
REMOVAL ........................................................... 36
INSTALLATION .................................................... 36
VDC/TCS/ABS
PRECAUTIONS ......................................................... 37
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................. 37
Precautions for Brake System ................................ 37
Precautions for Brake Control ................................ 37
PREPARATION ......................................................... 39
Special Service Tools ............................................. 39
ON-VEHICLE SERVICE ............................................ 40
Adjustment of Steering Angle Sensor Neutral Posi-
tion .......................................................................... 40
OPERATION PROCEDURE ................................ 40
SYSTEM DESCRIPTION .......................................... 41
System Diagram ..................................................... 41
Functions ................................................................ 41
VDC ..................................................................... 41
TCS ..................................................................... 41
ABS ..................................................................... 42
EBD ..................................................................... 42
Fail-Safe Function .................................................. 42
VDC/TCS SYSTEM ............................................. 42
ABS, EBD SYSTEM ............................................ 42
Hydraulic Circuit Diagram ....................................... 43
CAN Communication .............................................. 43
SYSTEM DESCRIPTION .................................... 43
TROUBLE DIAGNOSIS ............................................ 44
How to Perform Trouble Diagnosis Quick and Accu-
rate Repair .............................................................. 44
INTRODUCTION ................................................. 44
DIAGNOSIS FLOW CHART ................................ 45
ASKING COMPLAINTS ....................................... 46
EXAMPLE OF DIAGNOSIS SHEET .................... 46
Component Parts Location ..................................... 47
Schematic ............................................................... 48
Wiring Diagram — VDC — ..................................... 49
Control Unit Input/Output Signal Specifications ...... 55
REFERENCE VALUE FROM CONSULT-II ......... 55
CONSULT-II Functions ........................................... 57
CONSULT-II MAIN FUNCTION ........................... 57
CONSULT-II SETTING PROCEDURE ................ 57
Self-Diagnosis ........................................................ 58
DESCRIPTION .................................................... 58
OPERATION PROCEDURE ................................ 58
ERASE MEMORY ............................................... 58
DISPLAY ITEM LIST ........................................... 59
Data Monitor ........................................................... 61
OPERATION PROCEDURE ................................ 61
DISPLAY ITEM LIST ........................................... 61
Active Test .............................................................. 63
OPERATION PROCEDURE ................................ 63TEST ITEM .......................................................... 64
For Fast and Accurate Diagnosis ............................ 65
PRECAUTIONS FOR DIAGNOSIS ..................... 65
Basic Inspection ...................................................... 66
BRAKE FLUID LEVEL, LEAKAGE AND BRAKE
PAD ...................................................................... 66
POWER SUPPLY CIRCUIT TERMINAL LOOSE-
NESS AND BATTERY ......................................... 66
INSPECTION OF ABS WARNING LAMP, BRAKE
WARNING LAMP, VDC OFF INDICATOR LAMP,
AND SLIP INDICATOR LAMP ............................. 66
TROUBLE DIAGNOSIS FOR SYSTEM .................... 68
Wheel Sensor System ............................................ 68
Engine System ........................................................ 70
ABS Actuator and Electric Unit (Control Unit) 1 ...... 70
Steering Angle Sensor System ............................... 71
Yaw Rate/Side/Decel G Sensor System ................. 72
Pump Motor, Motor Relay System .......................... 74
Park/Neutral Position (PNP) Switch Circuit ............. 75
Solenoid and VDC Change-Over Valve, Actuator
Relay System .......................................................... 76
Stop Lamp Switch System ...................................... 77
ABS Actuator and Electric Unit (Control Unit) Power
Supply and Ground System .................................... 78
Brake Fluid Level Switch System ............................ 80
CAN Communication System ................................. 81
Component Parts Inspection ................................... 81
VDC OFF SWITCH .............................................. 81
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 82
Excessive ABS Function Operation Frequently ...... 82
Unexpected Pedal Reaction ................................... 83
Longer Stopping Distance ....................................... 83
ABS Function Does Not Operate ............................ 84
Pedal Vibration and ABS Operation Sound Occurs ... 84
Vehicle Jerks During VDC/TCS/ABS Control .......... 85
WHEEL SENSORS ................................................... 86
Removal and Installation ......................................... 86
COMPONENTS ................................................... 86
REMOVAL ............................................................ 86
INSTALLATION .................................................... 86
SENSOR ROTOR ...................................................... 87
Removal and Installation ......................................... 87
FRONT ................................................................. 87
REAR ................................................................... 87
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ... 88
Removal and Installation ......................................... 88
COMPONENTS ................................................... 88
REMOVAL ............................................................ 89
INSTALLATION .................................................... 89
G SENSOR ................................................................ 90
Removal and Installation ......................................... 90
REMOVAL ............................................................ 90
INSTALLATION .................................................... 90
STEERING ANGLE SENSOR ................................... 91
Removal and Installation ......................................... 91
REMOVAL ............................................................ 91
INSTALLATION .................................................... 91
BRC-40
[VDC/TCS/ABS]
ON-VEHICLE SERVICE
ON-VEHICLE SERVICEPFP:00000
Adjustment of Steering Angle Sensor Neutral PositionBFS000DO
In case of doing work that applies to the list below, make sure to adjust neutral position of steering angle sen-
sor before running vehicle.
×: Required
–: Not required
OPERATION PROCEDURE
1. Stop vehicle with front wheels in straight-ahead position.
2. Perform CONSULT-II Starting Procedure. Refer to GI-34, "
CONSULT-II Start Procedure" .
3. Touch the “CONSULT-II screen in the order of “ABS”, “WORK SUPPORT” and “ST ANGLE SENSOR
ADJUSTMENT”. Refer to BRC-57, "
CONSULT-II SETTING PROCEDURE" .
4. Touch “START”.
CAUTION:
Do not touch steering wheel while adjusting steering angle
sensor.
5. After approximately 10 seconds, touch “END”. (After approxi-
mately 60 seconds, it ends automatically.)
6. Turn ignition switch to OFF, then turn to the ON again.
CAUTION:
Be sure to perform above operation.
7. Run vehicle with front wheels in straight-ahead position, then
stop.
8. Select “DATA MONITOR”, “SELECTION FROM MENU”, and “STR ANGLE SIG” on CONSULT-II screen.
Then make sure “STR ANGLE SIG” is within 0 ± 3.5 °. If the value is more than the specification, repeat
steps 3 to 7.
9. Erase memory of ABS actuator and electric unit (control unit) and ECM.
10. Turn ignition switch OFF.
Situation Adjustment of Steering Angle Sensor Neutral Position
Removing/Installing ABS actuator and electric unit (control unit)−
Replacing ABS actuator and electric unit (control unit)×
Removing/Installing steering angle sensor×
Removing/Installing steering components×
Removing/Installing suspension components×
Change 4 tires to new ones–
Tire rotation–
Adjusting wheel alignment×
SFIA0793E
BRC-60
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Note 1: After completing repairs of the shorted sensor circuit, when ignition switch is turned ON, ABS warning lamp turns on. Make sure
that ABS warning lamp turns off while driving the vehicle at 30 km/h (19 MPH) or more for approximately 1 minute according to self-diag- FR LH IN ABS SOL
[C1120]This is displayed when the control unit detects a malfunction in the
front left wheel inlet solenoid circuit.
BRC-76, "
Solenoid and
VDC Change-Over Valve,
Actuator Relay System"
FR LH OUT ABS SOL
[C1121]This is displayed when the control unit detects a malfunction in the
front left wheel outlet solenoid circuit.
FR RH IN ABS SOL
[C1122]This is displayed when the control unit detects a malfunction in the
front right wheel inlet solenoid circuit.
FR RH OUT ABS SOL
[C1123]This is displayed when the control unit detects a malfunction in the
front right wheel outlet solenoid circuit.
RR LH IN ABS SOL
[C1124]This is displayed when the control unit detects a malfunction in the
rear left wheel inlet solenoid circuit.
RR LH OUT ABS SOL
[C1125]This is displayed when the control unit detects a malfunction in the
rear left wheel outlet solenoid circuit.
RR RH IN ABS SOL
[C1126]This is displayed when the control unit detects a malfunction in the
rear right wheel inlet solenoid circuit.
RR RH OUT ABS SOL
[C1127]This is displayed when the control unit detects a malfunction in the
rear right wheel outlet solenoid circuit.
CV 1
[C1164]When cut valve 1 circuit is open or shorted.
CV 2
[C1165]When cut valve 2 circuit is open or shorted.
SV 1
[C1166]When suction valve 1 circuit is open or shorted.
SV 2
[C1167]When suction valve 2 circuit is open or shorted.
ACTUATOR RLY
[C1140]This is displayed when the control unit detects a malfunction in
actuator relay circuit.
ENGINE SIGNAL 1- 6
[C1130, C1131, C1132, C1133,
C1134, C1136]When there is a malfunction in an engine system main
component.BRC-70, "
Engine Sys-
tem"
ST ANGLE SIG CIRCUIT
[C1143]When the steering angle sensor neutral position has deviated. Or
when a steering angle sensor malfunction is detected.BRC-71, "Steering Angle
Sensor System"
ST ANG SEN SIGNAL
[C1144]Neutral position correction of steering angle sensor is not finished.BRC-40, "Adjustment of
Steering Angle Sensor
Neutral Position"
YAW RATE SENSOR
[C1145]When yaw rate sensor malfunction is detected. Or when a yaw rate
sensor circuit open or short circuit is detected.
BRC-72, "
Yaw Rate/Side/
Decel G Sensor System"SIDE G-SEN CIRCUIT
[C1146]When a side G sensor malfunction is detected. Or the circuit of side
G sensor is open or shorted.
PNP POSI SIG
[C1154]TCS or ABS actuator and electric unit (control unit) internal mal-
function.BRC-75, "
Park/Neutral
Position (PNP) Switch
Circuit"
BR FLUID LEVEL LOW
[C1155]Brake fluid level drops. Or, when there is a short to ground in the
circuit between the ABS actuator and electric unit (control unit) and
the brake fluid level switch.BRC-80, "Brake Fluid
Level Switch System"
ST ANG SEN COM CIR
[C1156]CAN communication system or steering angle sensor has gener-
ated a malfunction.BRC-81, "CAN Communi-
cation System"
STOP LAMP SW2
[C1176]ASCD brake switch or circuit malfunction.EC-602, "DTC P1572
ASCD BRAKE SWITCH"
CAN COMM CIRCUIT
[U1000]When there is a malfunction in the CAN communication system.BRC-81, "CAN Communi-
cation System"
(Note 2) Diagnostic item Diagnostic item is detected when... Reference
TROUBLE DIAGNOSIS
BRC-65
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
For Fast and Accurate DiagnosisBFS000E6
PRECAUTIONS FOR DIAGNOSIS
Be sure to check the procedures of “How to Perform Trouble Diagnosis” in advance. Refer to GI-4, "Gen-
eral Precautions" .
Always adjust the neutral position of steering angle sensor before driving when removing and installing
ABS actuator and electric unit (control unit), steering angle sensor, suspension parts and adjusting align-
ment. Refer to BRC-40, "
Adjustment of Steering Angle Sensor Neutral Position" .
Always erase memory after completing trouble diagnosis. Refer to BRC-58, "ERASE MEMORY" .
When inspection of the continuity or voltage between modules or units is performed, check connector ter-
minals for disconnection, looseness, bend, or collapse. Repair or replace applicable part if any non-stan-
dard condition is detected.
Intermittent malfunctions may be caused by a poor connection in the harness, connectors, and terminals.
Move harnesses, harness connectors, and terminals by hand to make sure all connections are solid and
undamaged.
Do not to forcibly extend any connector terminal if a circuit tester is used for the check.
The symptom shown in the table may occur, but the system is operating normally.
Symptom Symptom description Result
Motor operation soundThis is the operation sound of the motor in the actuator and electric unit.Slight
sound may occur during VDC, TCS and ABS operation.
Normal
Just after the engine starts, the motor operating noise may be heard. This is a
normal status of the system operation check.
System operation check soundWhen engine starts, “click” sound may be heard from engine room. This is nor-
mal status of system operation check.Normal
VDC/TCS operation
(SLIP indicator lamp ON)TCS may activate momentarily if wheel speed changes when driving over
location where friction coefficient varies, when downshifting, or when fully
depressing accelerator pedal.
Normal
Cancel the VDC/
TCS function for
the inspection on
a chassis dyna-
mometer. Before the speed meter inspection, push VDC OFF switch to cancel the VDC/
TCS function.
When accelerator pedal is depressed on a chassis dynamometer (front wheel
fixing type), the vehicle speed will not increase. This is normal. It is result of
TCS being activated by stationary front wheels. The warning lamp may also
turn on to show “sensor system malfunction” in this case. This is also normal,
and is the result of the stationary front wheels being detected. Restart engine,
and drive the vehicle at 30 km/h (19 MPH) or more to make sure that the warn-
ing lamp no longer turns on.
ABS operation
(Longer stopping distance)When driving on roads with a low coefficient of friction, such as snowy roads or
gravel roads, the stopping distance is sometimes longer for vehicles equipped
with ABS. Therefore, when driving on such roads, drive at a sufficiently
reduced speed to be safe.Normal
Sluggish feelDepending on road conditions, the driver may have a sluggish feel. This is
because traction control, which controls engine and brakes to achieve optimal
traction, has the highest priority (for safety). As a result sometimes the driver
has a less slight sluggish feel in response than usual acceleration feel.Normal
ENGINE CONTROL SYSTEM
EC-21
[QR]
C
D
E
F
G
H
I
J
K
L
MA
EC
Multiport Fuel Injection (MFI) SystemBBS005BF
INPUT/OUTPUT SIGNAL CHART
*1: This sensor is not used to control the engine system under normal conditions.
*2: This signal is sent to the ECM through CAN communication line.
*3: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signals (for engine speed and intake air) from both the crankshaft position sensor and the mass air
flow sensor.
VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operat-
ing conditions as listed below.
During warm-up
When starting the engine
During acceleration
Hot-engine operation
When selector lever is changed from N to D
High-load, high-speed operation
During deceleration
During high engine speed operation
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
3
Piston position
Fuel injection & mixture
ratio controlFuel injector Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Heated oxygen sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch Gear position
Knock sensor Engine knocking condition
Battery
Battery voltage*
3
Power steering pressure sensor Power steering operation
Heated oxygen sensor 2*
1Density of oxygen in exhaust gas
Wheel sensor
Vehicle speed*
2
Air conditioner switch
Air conditioner operation*2
TROUBLE DIAGNOSIS
EC-73
[QR]
C
D
E
F
G
H
I
J
K
L
MA
EC
2R/LHeated oxygen sensor 2
heater[Engine is running]
Engine speed: Below 3,800 rpm after the
following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for
1 minute under no load0 - 1.0V
[Ignition switch: ON]
Engine stopped
[Engine is running]
Engine speed: Above 3,800 rpmBATTERY VOLTAGE
(11 - 14V)
3 G/WThrottle control motor relay
power supply[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
4LThrottle control motor
(Close)[Ignition switch: ON]
Engine stopped
Shift lever: D
Accelerator pedal: Fully released0 - 14V
5YThrottle control motor
(Open)[Ignition switch: ON]
Engine stopped
Shift lever: D
Accelerator pedal: Fully depressed0 - 14V
12 WPower steering pressure
sensor[Engine is running]
Steering wheel: Being turned0.5 - 4.0V
[Engine is running]
Steering wheel: Not being turned0.4 - 0.8V
13 WCrankshaft position
sensor (POS)[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on
rpm at idleApproximately 3.0V
[Engine is running]
Engine speed: 2,000 rpmApproximately 3.0V TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB1104E
PBIB1105E
PBIB0527E
PBIB0528E
EC-90
[QR]
TROUBLE DIAGNOSIS
CONSULT-II Reference Value in Data Monitor ModeBBS005C9
Remarks:
Specification data are reference values.
Specification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in
spite of the ignition timing not being adjusted to the specification data. This IGN TIMING monitors the data calculated by the ECM
according to the signals input from the camshaft position sensor and other ignition timing related sensors.
MONITOR ITEM CONDITION SPECIFICATION
ENG SPEED
Run engine and compare CONSULT-II value with the tachometer indica-
tion.Almost the same speed as the
tachometer indication.
MAS A/F SE-B1 See EC-95, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
B/FUEL SCHDL See EC-95, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
A/F ALPHA-B1 See EC-95, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
COOLAN TEMP/S
Engine: After warming up More than 70°C (158°F)
HO2S1 (B1)
Engine: After warming upMaintaining engine speed at 2,000
rpm0 - 0.3V ←→ Approx. 0.6 - 1.0V
HO2S2 (B1)
Revving engine from idle to 3,000 rpm quickly after the following condi-
tions are met.
–Engine: After warming up
–Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute
and at idle for 1 minute under no load0 - 0.3V ←→ Approx. 0.6 - 1.0V
HO2S1 MNTR (B1)
Engine: After warming upMaintaining engine speed at 2,000
rpmLEAN ←→ RICH
Changes more than 5 times dur-
ing 10 seconds.
HO2S2 MNTR (B1)
Revving engine from idle to 3,000 rpm quickly after the following condi-
tions are met.
–Engine: After warming up
–Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute
and at idle for 1 minute under no loadLEAN ←→ RICH
VHCL SPEED SE
Turn drive wheels and compare CONSULT-II value with the speedome-
ter indication.Almost the same speed as the
speedometer indication.
BATTERY VOLT
Ignition switch: ON (Engine stopped) 11 - 14V
ACCEL SEN 1
Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.65 - 0.87V
Accelerator pedal: Fully depressed More than 4.3V
ACCEL SEN 2*
Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.56 - 0.96V
Accelerator pedal: Fully depressed More than 4.0V
THRTL SEN 1
THRTL SEN 2*
Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released More than 0.36V
Shift lever: D Accelerator pedal: Fully depressed Less than 4.75V
START SIGNAL
Ignition switch: ON → START → ON OFF → ON → OFF
CLSD THL POS
Ignition switch: ONAccelerator pedal: Fully released ON
Accelerator pedal: Slightly
depressedOFF
AIR COND SIG
Engine: After warming up, idle the
engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON
P/N POSI SW
Ignition switch: ONShift lever: P or N ON
Shift lever: Except above OFF
PW/ST SIGNAL
Engine: After warming up, idle the
engineSteering wheel: Not being turned OFF
Steering wheel: Being turned ON
EC-116
[QR]
DTC P0011 IVT CONTROL
DTC P0011 IVT CONTROLPFP:23796
DescriptionBBS005CP
SYSTEM DESCRIPTION
*: This signal is sent to the ECM through CAN communication line.
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing control solenoid
valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to
increase engine torque in low/mid speed range and output in high-speed range.
COMPONENT DISCRIPTION
Intake valve timing control solenoid valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The intake valve timing control solenoid valve changes the oil
amount and direction of flow through intake valve timing control unit
or stops oil flow.
The longer pulse width advances valve angle.
The shorter pulse width retards valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the intake valve angle at the control
position.
CONSULT-II Reference Value in Data Monitor ModeBBS005CQ
Specification data are reference values.
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed
Intake valve
timing controlIntake valve timing control
solenoid valve Engine coolant temperature sensor Engine coolant temperature
Wheel sensor Vehicle speed*
PBIB3278E
PBIB1842E
MONITOR ITEM CONDITION SPECIFICATION
INT/V TIM (B1)
Engine: After warming up
Air conditioner switch: OFF
Shift lever: N
No loadIdle−5° - 5°CA
2,000 rpm Approx. 0° - 20°CA