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05-386
DIAGNOSTICS - ABS WITH EBD SYSTEM
057U9-05
ABS Warning Light BRAKE Warning PRE-CHECK
Light 1. DIAGNOSIS SYSTEM
USA: USA:
(a) Release the parking brake pedal.
(b) Check the warning lights.
When the ignition switch is turned ON, check that the ABS
Canada: Canada:
warning light and brake warning light come on for 3 sec.
HINT:
S When the parking brake is applied or the level of the brake
F45097
fluid is low, the brake warning light comes on.
S If the indicator check result is not normal, proceed to trou-
bleshooting for the ABS warning light circuit (See page
05-419 or 05-423 ) or brake warning light circuit (See
page 05-425 ).
Tc
2. DTC CHECK (USING SST CHECK WIRE)
(a) Checking DTCs using a SST check wire.
SST 09843-18040
(1) Using SST, connect terminal Tc and CG of the
DLC3.
(2) Turn the ignition switch ON.
(3) Read the DTC from the ABS warning light on the
combination meter.
CG C52361 HINT:
S If no code appears, inspect the diagnostic circuit or ABS
warning light circuit (See page 05-419 or 05-423 ).
S As an example, the blinking patterns for normal code and
Normal Code codes 11 and 21 are shown on the left.
2 sec. 0.25 sec. (4) Codes are explained in the code table on page
05-392
0.25 sec.
If 2 or more DTCs are detected at the same time, the lowest
numbered DTC is displayed 1st.
ON
(5) After completing the check, remove the SST from
OFF the DLC3.
Code 11 and 21
0.5 sec. 0.5 sec.
1.5 sec.
4 sec. 2.5 sec.
ON
OFF
Code 11 Code 21
R01346
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 569
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DIAGNOSTICS - ABS WITH EBD SYSTEM
(b) Clearing the DTCs using the SST check wire.
SST 09843-18040
(1) Using SST, connect the terminal Tc and CG of the
DLC3.
(2) Turn the ignition switch ON.
(3) Clear DTC stored in ECU by depressing the brake
pedal 8 or more times within 5 sec.
(4) Check that the ABS warning light shows the normal
code.
(5) Remove the SST from the DLC3.
HINT:
Disconnect the battery cable during repairs will not erase the
DTC in the ECU.
BR3890
3. DTC CHECK (USING HAND-HELD TESTER)
(a) Checking DTCs using the Hand-held tester.
(1) Read the DTC by following the prompts on the tes-
ter screen.
HINT:
Please refer to the hand-held tester operator's manual for fur-
ther details.
(b) Clearing the DTCs using the hand-held tester.
(1) Turn the ignition switch to ON.
(2) Operate the hand-held tester to erase the codes.
HINT:
Please refer to the hand-held tester operator's manual for fur-
ther details.
4. DATA LIST
With the hand-held tester connected to DLC3 and the ignition turned to ON, the ABS data list can be dis-
played. Follow the prompts on the tester screen to access the Data List.
Measurement Item /
Item Normal Condition Diagnostic Note
Range (Display)
ABS motor relay / ON or
ABS MOT RELAY ON : Motor relay ON -
OFF
Solenoid relay / ON or
SOL RELAY ON : Solenoid relay ON -
OFF
ON : Brake pedal de-
Stop light switch / ON or pressed
STOP LIGHT SW -
OFF OFF : Brake pedal re-
leased
ON : Parking brake applied
Parking brake switch / ON
PKB SW OFF : Parking brake re- -
or OFF
leased
BEFORE : No ABS opera-
ABS operation (FR) / BE- tion (FR)
ABS OPERT FR -
FORE or OPERATE OPERATE : During ABS
operation (FR)
BEFORE : No ABS opera-
ABS operation (FL) / BE- tion (FL)
ABS OPERT FL -
FORE or OPERATE OPERATE : During ABS
operation (FL)
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 570
05-388
DIAGNOSTICS - ABS WITH EBD SYSTEM
Measurement Item /
Item Normal Condition Diagnostic Note
Range (Display)
BEFORE : No ABS opera-
ABS operation (RR) / BE- tion (RR)
ABS OPERT RR -
FORE or OPERATE OPERATE : During ABS
operation (RR)
BEFORE : No ABS opera-
ABS operation (RL) / BE- tion (RL)
ABS OPERT RL -
FORE or OPERATE OPERATE : During ABS
operation (RL)
Wheel speed sensor (FR)
reading / min.: 0 km/h (0 Speed indicated on
WHEEL SPD FR Actual wheel speed
MPH, max.: 326 km/h (202 speedometer
MPH)
Wheel speed sensor (FL)
reading / min.: 0 km/h (0 Speed indicated on
WHEEL SPD FL Actual wheel speed
MPH, max.: 326 km/h (202 speedometer
MPH)
Wheel speed sensor (RR)
reading / min.: 0 km/h (0 Speed indicated on
WHEEL SPD RR Actual wheel speed
MPH, max.: 326 km/h (202 speedometer
MPH)
Wheel speed sensor (RL)
reading / min.: 0 km/h (0 Speed indicated on
WHEEL SPD RL Actual wheel speed
MPH, max.: 326 km/h (202 speedometer
MPH)
ECU power supply voltage NORMAL : 9.5 V or over
IG VOLTAGE -
/ NORMAL or TOO LOW TOO LOW : Below 9.5 V
ABS solenoid (SFRR) ON /
SFRR ON : Operate -
OFF
ABS solenoid (SFRH) ON /
SFRH ON : Operate -
OFF
ABS solenoid (SFLR) ON /
SFLR ON : Operate -
OFF
ABS solenoid (SFLH) ON /
SFLH ON : Operate -
OFF
ABS solenoid (SRRR) ON /
SRRR ON : Operate -
OFF
ABS solenoid (SRRH) ON
SRRH ON : Operate -
/ OFF
ABS solenoid (SRLR) ON /
SRLR ON : Operate -
OFF
ABS solenoid (SRLH) ON /
SRLH ON : Operate -
OFF
Maximum wheel speed
sensor reading / min.: 0 Speed indicated on
VEHICLE SPD Actual vehicle speed
km/h (0 MPH), max.: 326 speedometer
km/h (202 MPH)
Test mode / NORMAL or NORMAL : Normal mode
TEST MODE -
TEST TEST : During test mode
Number of DTC recorded /
#CODES Min.: 0, max.: 19 -
min.: 0, max.: 255
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 571
05-389
DIAGNOSTICS - ABS WITH EBD SYSTEM
5. ACTIVE TEST
HINT:
Performing the ACTIVE TEST using the Hand-held tester allows the relay, actuator and so on to operate
without parts removal. Performing the ACTIVE TEST as a first step of troubleshooting is one of the methods
to shorten the labor time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(a) Connect the Hand-held tester to the DLC3.
(b) Turn the ignition switch to ON.
(c) From the display on the tester, select the "ACTIVE TEST".
Item Vehicle Condition / Test Details Diagnostic Note
Operation of solenoid
SFRR Turns ABS solenoid (SFRR) ON / OFF (clicking sound) can be
heard
Operation of solenoid
SFRH Turns ABS solenoid (SFRH) ON / OFF (clicking sound) can be
heard
Operation of solenoid
SFLR Turns ABS solenoid (SFLR) ON / OFF (clicking sound) can be
heard
Operation of solenoid
SFLH Turns ABS solenoid (SFLH) ON / OFF (clicking sound) can be
heard
Operation of solenoid
SRRR Turns ABS solenoid (SRRR) ON / OFF (clicking sound) can be
heard
Operation of solenoid
SRRH Turns ABS solenoid (SRRH) ON / OFF (clicking sound) can be
heard
Operation of solenoid
SRLR Turns ABS solenoid (SRLR) ON / OFF (clicking sound) can be
heard
Operation of solenoid
SRLH Turns ABS solenoid (SRLH) ON / OFF (clicking sound) can be
heard
Operation of solenoid
SOL RELAY Turns ABS solenoid relay ON / OFF (clicking sound) can be
heard
Operation of motor can be
ABS MOT RELAY Turns ABS motor relay ON / OFF
heard
Observe combination me-
ABS WARN LIGHT Turns ABS warning light ON / OFF
ter
Observe combination me-
BRAKE WRN LIGHT Turns BRAKE warning light ON / OFF
ter
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 572
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DIAGNOSTICS - ABS WITH EBD SYSTEM
6. FREEZE FRAME DATA
(a) The vehicle (sensor) status memorized during ABS operation or at the time of malfunction code detec-
tion can be displayed using the hand-held tester.
(b) Only one record of the freeze frame data is stored and the freeze frame data generated during ABS
operation are constantly updated. Also, the number of the operations of the ignition switch "ON" after
the freeze frame data is stored can be memorized up to 31 and it can be displayed.
HINT:
If the ignition switch "ON" operation exceeds 31 times, "31" appears on the display.
(c) If the diagnosis code malfunction occurs, the freeze frame data at the occurrence of the malfunction
is stored but the ABS actuation data is deleted.
Hand-held tester display Measurement Item Reference Value*
VEHICLE SPD Vehicle speed Speed indication of a meter
STOP LIGHT SW Stop light switch signal Stop light switch ON: ON, OFF: OFF
Numbers of operations of ignition switch ON after
# IG ON 0 to 31
memorizing freeze frame data
SYSTEM Operate system ABS operate: ABS
*: If no conditions are specifically stated for "Idling", it means the shift lever is at N or P position, the A/C switch
is OFF and all accessory switches are OFF.
7. SPEED SENSOR SIGNAL CHECK
HINT:
If the ignition switch is turned from ON to ACC or LOCK during
test mode, the DTCs will be erased.
(a) Procedure for speed sensor signal check using a SST
check wire.
SST 09843-18040
(1) Turn the ignition switch to OFF.
(2) Using SST, it connects the terminal Ts and CG of
Ts
DLC3.
SST 09843-18040
(3) Start the engine.
CG
C52361
(4) Check that the ABS warning light blinks.
HINT:
0.13 sec. 0.13 sec.
If the ABS warning light does not blink, inspect the ABS warning
light circuit and Ts circuit (See page 05-419 or 05-423 and
ON
05-429 ).
(5) Drive the vehicle straight forward at the speed of 45
km/h (28 mph) or over for several seconds and
OFF check that the ABS warning light goes off.
BR3904 HINT:
The sensor check may not be completed if the wheels spin or
the steering wheel steered during the check.
(6) Stop the vehicle.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 573
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DIAGNOSTICS - ABS WITH EBD SYSTEM
(7) Using SST, it connects the terminal Tc and CG of the
DLC3.
SST 09843-18040
(8) Read the number of blinks of the ABS warning light.
HINT:
S See the list of DTCs shown on the 05-392 .
S If every sensor is normal, a normal code is output (A cycle
of 0.25 sec. ON and 0.25 sec. OFF is repeated).
S If 2 or more DTCs are detected at the same time, the low-
est numbered code will be displayed.
Malfunction Code (Example Code 72, 76)
7 2 7 6
ON
OFF 1.5 sec. 2.5 sec. 4 sec.
0.5 sec. 0.5 sec.
0.5 sec. 0.5 sec. Repeat
BR3893
(9) After performing the check, turn the ignition switch
OFF, and remove the SST from the DLC3.
SST 09843-18040
(b) Procedure for speed sensor signal check using the hand-
held tester.
(1) Connect the hand-held tester.
(2) Turn the ignition switch ON.
(3) Perform the step (3) to (6) on the previous page.
(4) Read the DTC by following the prompts on the tes-
ter screen.
(5) After completing the check disconnect the tester
and turn the ignition switch OFF.
HINT:
Please refer to the hand-held tester operator's manual for fur-
ther details.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 574
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