BRC-78
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
SELF-DIAGNOSIS
Description
If a malfunction is detected in the system, the ABS warning lamp, ESP OFF indicator lamp, and SLIP indicator
lamp on the meter turn on. In this case, perform the self-diagnosis as follows:
Procedure
1. Perform aBRC-89, "Basic Inspection"using information from the customer.
2. After the ignition switch is turned OFF, connect the CONSULT-II
connector to the vehicle-side data link connector. The data link
connector is on the lower instrument cover).
3. Start the engine and drive at Approx. 30 km/h (19 MPH) for
approx. 1 minute.
4. After stopping the vehicle, with the engine still idling, touch “
START”, “ABS”, “SELF-DIAG RESULTS” on the CONSULT-II
screen in this order.
CAUTION:
Just after starting the engine, or turning the ignition switch
ON,²ABS²may not be displayed on the system selection
screen even if²START²is touched. In this case, start the
self-diagnosis again from step 2. If it cannot be shown after
several attempts, the ESP/TCS/ABS control unit may mal-
function. Repair or replace the control unit.
5. The self-diagnosis result is displayed. (If necessary, touch²PRINT²to print the self-diagnosis result.)
lWhen²NO FAILURE²is shown, check the ABS warning lamp, ESP OFF indicator lamp, SLIP indicator
lamp. Refer toBRC-88, "
For Correct and Quick Diagnosis".
lCONSULT-II self-diagnosis results are displayed without regard to occurrence timing. In some case, the
later ones (timing value is small) appear on the next screen.
6. Go to appropriate²Inspection²chart according to²Self-Diagnostic Items to Result Mode²and repair or
replace as necessary.
7. Start the engine and drive at Approx. 30 km/h (19 MPH) for Approx. 1 minute.
CAUTION:
Check again to make sure that there is NO MALFUNCTION on other parts.
8. Turn the ignition switch OFF to prepare for erasing the memory.
9. Start the engine and touch²START²,²ABS²,²SELF-DIAG RESULTS²and²ERASE²on CONSULT-II
screen in this order to ease the memory.
PBIA0153E
SFIA0364E
SFIA0365E
TROUBLE DIAGNOSIS
BRC-81
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
(note) “ACTUATOR RLY” on the CONSULT-II self-diagnosis results indicates the malfunction of the actuator motor relay and circuit.
DATA MONITOR
For details of the data monitor function, refer to the CONSULT-II Instruction Manual.
Procedure
1. Turn the ignition switch OFF.
2. Connect the CONSULT-II connector to the vehicle-side data link connector.
3. Turn the ignition switch ON.
4. Touch²START²on the display.
5. Touch²ABS²on the display.
CAUTION:
Just after the engine is started, or the ignition switch is
turned ON,²ABS²may not be displayed on the system
selection screen even if²START²is touched. In this case,
start the self-diagnosis again from step 2.
6. Touch²DATA MONITOR².
7. The data monitor item selection screen is displayed, and touch
one of “ECU INPUT SIGNALS” “MAIN SIGNALS”, “CAN DIAG
SUPPORT MNTR” or “SELECTION FROM MENU”. Refer to
BRC-82, "
Data Monitor Items to be Displayed".
8. Touch²START².
9. Screen of data monitor is displayed.
SIDE G-SEN CIRCUITSide G sensor is abnormal, or the signal line of side G sensor is
open or shorted.Yaw rate /Side G sensor
and circuit. Refer to
BRC-95
EMERGENCY BRAKEESP/TCS/ABS control unit malfunction (pressure increase is too
much or too little.)ESP/TCS/ABS control
unit. Refer toBRC-106
CONTROLLER FAILURE ESP/TCS/ABS internal malfunction of control unitESP/TCS/ABS control
unit. Refer toBRC-92
CAN COMM CIRCUIT
lCAN communication line is open or shorted.
lESP/TCS/ABS control unit internal malfunction.
lBattery voltage for EMC is interrupted instantaneously for
Approx. 0.5 seconds or more.Communication circuit
between ESP/TCS/ABS
control unit and units.
Refer toBRC-108
BR FLUID LEVEL LOWBrake fluid level drops or communication line between the ESP/
TCS/ABS control unit and the brake fluid level warning switch is
open or shorted.Communication circuit
between the ESP/TCS/
ABS control unit and the
brake fluid level warning
switch.
Reservoir tank fluid.
Refer toBRC-107
ENGINE SIGNAL 1-4, 6 Major engine components are abnormalEngine system. Refer to
BRC-92
Self-Diagnostic item Malfunction detecting condition Check route
SFIA0364E
SFIA0365E
BRC-82
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Data Monitor Items to be Displayed
Data Monitor Item (Unit)Data Monitor item selection
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM
MENUCAN DIAG
SUPPORT
MNTR
GEAR´´´– “1” is displayed.
SLCT LVR POSI´´´– “##” is displayed.
FR RH SENSOR
(km/h,MPH)´´´–Wheel speed calculated by
front RH wheel speed sensor
signal is displayed.
FR LH SENSOR
(km/h, MPH)´´´–Wheel speed calculated by
front LH wheel speed sensor
signal is displayed.
RR RH SENSOR
(km/h, MPH)´´´–Wheel speed calculated by
rear RH wheel speed sensor
signal is displayed.
RR LH SENSOR
(km/h, MPH)´´´–Wheel speed calculated by
rear LH wheel speed sensor
signal is displayed.
ACCEL POS SIG
(%)´´´–Throttle valve open/close sta-
tus judged by the CAN com-
munication signal is
displayed.
ENGINE RPM
(rpm)´´´–Engine speed judged by the
CAN communication signal is
displayed.
CAN COM START
(ON/OFF)–´´–Communication status of CAN
communication is displayed.
STR ANGLE SIG
(deg)´´´–Steering angle detected by
the steering angle sensor is
displayed.
YAW R AT E S E N
(d/s)´´´–Yaw rate detected by the yaw
rate sensor is displayed.
SIDE G-SENSOR
(m/s
2)´´´–Transverse acceleration
detected by the side G sensor
is displayed.
PRESS SENSOR
(bar )´´´–Brake fluid pressure detected
by the pressure sensor is dis-
played.
BATTERY VOLT
(V )´´´–Voltage supplied to ESP/TCS/
ABS control unit is displayed.
MOTOR RELAY
(ON/OFF )–´´–Motor relay signal (ON/OFF)
status is displayed.
ACTUATOR RLY
(ON/OFF )–´´–Actuator relay signal (ON/
OFF) status is displayed.
STOP LAMP SW
(ON/OFF)´´´–Stop lamp switch (ON/OFF)
status is displayed.
PARK BRAKE SW
(ON/OFF)´´´–Parking brake switch (ON/
OFF) status is displayed.
OFF SW
(ON/OFF)´´´–ESP OFF switch (ON/OFF)
status is displayed.
ABS WARN LAMP
(ON/OFF)–´´–ABS warning lamp (ON/OFF)
status is displayed.
OFF LAMP
(ON/OFF)–´´–ESP OFF indicator lamp (ON/
OFF) status is displayed.
TROUBLE DIAGNOSIS
BRC-83
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
SLIP LAMP
(ON/OFF)–´´–SLIP indicator lamp (ON/
OFF) status is displayed.
FR LH IN SOL
(ON/OFF)–´´–Front LH wheel inlet solenoid
valve (ON/OFF) status is dis-
played.
FR LH OUT SOL
(ON/OFF)–´´–Front LH wheel outlet sole-
noid valve (ON/OFF) status is
displayed.
RR RH IN SOL
(ON/OFF)–´´–Rear RH wheel inlet solenoid
valve (ON/OFF) status is dis-
played.
RR RH OUT SOL
(ON/OFF)–´´–Rear RH wheel outlet sole-
noid valve (ON/OFF) status is
displayed.
FR RH IN SOL
(ON/OFF)–´´–Front RH wheel inlet solenoid
valve (ON/OFF) status is dis-
played.
FR RH OUT SOL
(ON/OFF)–´´–Front RH wheel outlet sole-
noid valve (ON/OFF) status is
displayed.
RR LH IN SOL
(ON/OFF)–´´–Rear LH wheel inlet solenoid
valve (ON/OFF) status is dis-
played.
RR LH OUT SOL
(ON/OFF)–´´–Rear LH wheel outlet solenoid
valve (ON/OFF) status is dis-
played.
USV [FL-RR]
(ON/OFF)––´–Primary-side switch-over
solenoid valve (ON/OFF) sta-
tus is displayed. (USV)
USV [FR-RL]
(ON/OFF)––´–Secondary-side switch-over
solenoid valve (ON/OFF) sta-
tus is displayed. (USV)
HSV [FL-RR]
(ON/OFF)––´–Primary-side switch-over
solenoid valve (ON/OFF) sta-
tus is displayed. (HSV)
HSV [FR-RL]
(ON/OFF)––´–Secondary-side switch-over
solenoid valve (ON/OFF) sta-
tus is displayed. (HSV)
V/R OUTPUT
(ON/OFF)––´–Actuator relay operation sig-
nal (ON/OFF) status is dis-
played.
M/R OUTPUT
(ON/OFF)––´–Motor relay activation signal
(ON/OFF) status is displayed.
VDC FAIL SIG
(ON/OFF)––´–ESP fail signal (ON/OFF) sta-
tus is displayed.
TCS FAIL SIG
(ON/OFF)––´–TCS fail signal (ON/OFF) sta-
tus is displayed.
ABS FAIL SIG
(ON/OFF)––´–ABS fail signal (ON/OFF) sta-
tus is displayed.
EBD FAIL SIG
(ON/OFF)––´–EBD fail signal (ON/OFF) sta-
tus is displayed. Data Monitor Item (Unit)Data Monitor item selection
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM
MENUCAN DIAG
SUPPORT
MNTR
BRC-84
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
´: Applicable
–: Not applicable
ACTIVE TEST
Procedure
CAUTION:
lDo not perform active test while driving the vehicle.
lMake sure that completely bleed air from the brake system.
lThe active test cannot be performed with the ABS warning lamp on.
1. Connect the CONSULT-II connector to the vehicle-side data link connector and start the engine.
2. Touch²START²on the display.
FLUID LEV SW
(ON/OFF)––´–Brake fluid level warning
switch (ON/OFF) status is dis-
played.
SNOW MODE SW
(ON/OFF)––´– “OFF” is displayed.
BST OPER SIG
(ON/OFF)––´– “OFF” is displayed.
CAN COMM
(OK/NG)–––´CAN communication signal
(OK/NG)statusisdisplayed.
CANCIRC1
(ON/ UNKWN)–––´
CAN communication signal
(OK/UNKWN) status is dis-
played. CANCIEC2
(OK/ UNKWN)–––´
CANCIRC5
(OK/ UNKWN)–––´
CANCIRC7
(ON / UNKWN)–––´
MMODESIG
(ON/OFF)––´– “OFF” is displayed.
OD OFF SW
(ON/OFF)––´– “OFF” is displayed.
EBD SIGNAL
(ON/OFF)––´–EBD operation (ON/OFF) sta-
tusisdisplayed.
ABS SIGNAL
(ON/OFF)––´–ABS operation (ON/OFF) sta-
tusisdisplayed.
TCS SIGNAL
(ON/OFF)––´–TCS operation (ON/OFF) sta-
tusisdisplayed.
VDC SIGNAL
(ON/OFF)––´–ESP operation (ON/OFF) sta-
tusisdisplayed. Data Monitor Item (Unit)Data Monitor item selection
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM
MENUCAN DIAG
SUPPORT
MNTR
TROUBLE DIAGNOSIS
BRC-85
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
3. Touch²ABS²and²ACTIVE TEST².
4. The test item selection screen is displayed.
5. Touch necessary test item.
6. Touch²START²with²MAIN SIGNALS²line inverted.
SFIA0364E
SFIA0365E
SFIA0366E
SFIA0367E
BRC-86
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
7. The active test screen is displayed.
Solenoid Valve
1. Select each test items without “(ACT)” for the ABS function
active test, and with “(ACT)” for the ESP/TCS function active
test.
2. Touch²UP,²²KEEP,²and²DOWN²or²UP,²²ACTUATOR UP,²
and²ACTUATOR KEEP². And check that the solenoid valves
operate as the “Solenoid Valve Operation Chart”. Refer toBRC-
86, "Solenoid Valve Operation Chart".
Solenoid Valve Operation Chart
SFIA0368E
SFIA0366E
OperationWithout “(ACT)” With “(ACT)”
UP KEEP DOWN UPACTUA-
TO R U PACTUA-
TOR KEEP
FR RH SOL
FR RH ABS SOLE-
NOID (ACT)FR RH IN SOL OFF ON ON OFF OFF OFF
FR RH OUT SOL OFF OFF ON* OFF OFF OFF
USV [FR-RL] OFF OFF OFF OFF ON ON
HSV [FR-RL] OFF OFF OFF OFF ON* OFF
FR LH SOL
FR LH ABS SOLE-
NOID (ACT)FR LH IN SOL OFF ON ON OFF OFF OFF
FR LH OUT SOL OFF OFF ON* OFF OFF OFF
USV [FL-RR] OFF OFF OFF OFF ON ON
HSV [FL-RR] OFF OFF OFF OFF ON* OFF
RR RH SOL
RR RH ABS SOLE-
NOID (ACT)RR RH IN SOL OFF ON ON OFF OFF OFF
RR RH OUT SOL OFF OFF ON* OFF OFF OFF
USV [FL-RR] OFF OFF OFF OFF ON ON
HSV [FL-RR] OFF OFF OFF OFF ON* OFF
RR LH SOL
RR LH ABS SOLE-
NOID (ACT)RR LH IN SOL OFF ON ON OFF OFF OFF
RR LH OUT SOL OFF OFF ON* OFF OFF OFF
USV [FR-RL] OFF OFF OFF OFF ON ON
HSV [FR-RL] OFF OFF OFF OFF ON* OFF
FRONT SOLENOID
FRONT ABS SOLE-
NOID (ACT)FR RH IN SOL OFF ON ON OFF OFF OFF
FR RH OUT SOL OFF OFF ON OFF OFF OFF
FR LH IN SOL OFF ON ON OFF OFF OFF
FR LH OUT SOL OFF OFF ON OFF OFF OFF
TROUBLE DIAGNOSIS
BRC-87
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
*: ON for 1 to 2 seconds after the touch, and then OFF
NOTE:
lIf the active test is performed with the brake pedal depressed, the pedal stroke may be changed. This is a
normal condition.
l²TEST STOP²is displayed 6 seconds after the operation start.
lAfter²TEST STOP²is displayed, to perform the test again, repeat the step 6 of the operation procedure.
ESP OFF Indicator Lamp
To u c h²ON²and²OFF on the “VDC WARNING LAMP” screen to check that ESP OFF indicator lamp oper-
ates as follows.
NOTE:
Duringtheactivetestwhen²OFF²on the “VDC WARNING LAMP” screen is touched, all of the ESP OFF indi-
cator lamp, SLIP indicator lamp, and ABS warning lamp flash once. This is not abnormal.
Motor Relay and Actuator Relay
To u c h²ON²and²OFF²on the “ABS MOTOR” screen to check that the motor relay and the actuator relay
operate as follows.
NOTE:
lIf the active test is performed with the brake pedal depressed, the pedal stroke may be changed. This is a
normal condition.
l²TEST STOP²is displayed after 10 seconds from the operation start.
SLIP Indicator Lamp
To u c h²ON²and²OFF²on the “SLIP LAMP” screen to check that the SLIP indicator lamp operates as follows.
NOTE:
During the active test when²OFF²on the “SLIP LAMP” screen is touched, all of the ESP OFF indicator lamp,
SLIP indicator lamp, and ABS warning lamp flash once. This is not abnormal.
ABS Warning Lamp
To u c h²ON²and²OFF²on the “ABS WARNING LAMP” screen to check that the ABS warning lamp operates
as follows.
NOTE:
Duringtheactivetestwhen²OFF²on the “ABS WARNING LAMP” screen is touched, all of the ESP OFF indi-
cator lamp, SLIP indicator lamp, and ABS warning lamp flash once. This is not abnormal.
REAR SOLENOID
REAR ABS SOLNOID
(ACT)RR RH IN SOL OFF ON ON OFF OFF OFF
RR RH OUT SOL OFF OFF ON OFF OFF OFF
RR LH IN SOL OFF ON ON OFF OFF OFF
RR LH OUT SOL OFF OFF ON OFF OFF OFF OperationWithout “(ACT)” With “(ACT)”
UP KEEP DOWN UPACTUA-
TOR UPACTUA-
TO R K EE P
Operation ON OFF
VDC WARNING LAMP ON (Lamp ON) OFF (Lamp OFF)
Operation ON OFF
MOTOR RELAY ON OFF
ACTUATOR RELAY ON ON
Operation ON OFF
SLIP LAMP ON (Lamp ON) OFF (Lamp OFF)
Operation ON OFF
ABS WARNING LAMP ON (Lamp ON) OFF (Lamp OFF)