Page 892 of 3115
DIC8P-01
ABS & EBD & BA Check SheetInspector 's
Name:
Customer 's Name
Date Vehicle
Brought InRegistration DateRegistration No.
Frame No.
Odometer Reading/ /
/ /
Date Problem First Occurred
Frequency Problem Occurs/ /
ContinuouslyIntermittently ( times a day)
ABS does not operate.
ABS does not operate efficiently.
ABS Warning Light
AbnormalRemains ONDoes not light up
DTC Check1st Time
2nd TimeNormal Code
Malfunction Code (Code )
Normal CodeMalfunction Code (Code )
Symptomskm
miles
Brake Warning
Light Abnormal
(PKB released)Remains ONDoes not light up
BA does not operate.
EBD does not operate.
STOP LIGHT SW
SYSTEM
Freeze Frame Data
#IG ON
VEHICLE SPDON
OFF
NO SYS
ABS
BA
FAIL SF
km/h
MPH
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-503
696 Author: Date:
2004 LAND CRUISER (RM1071U)
CUSTOMER PROBLEM ANALYSIS CHECK
Page 893 of 3115
Inspector 's
Name:
Customer 's Name
Date Vehicle
Brought InRegistration DateRegistration No.
Frame No.
Odometer Reading/ /
/ /
Date Problem First Occurred
Frequency Problem Occurs/ /
ContinuousIntermittent ( times a day)
TRAC does not operate. (Wheels spin when starting rapidly.)
DisplaysDoes not display
DTC Check1st Time
2nd TimeNormal Code
Malfunction Code (Code )
Normal CodeMalfunction Code (Code )
Symptomskm
miles
Light Abnormal TRAC OFF Indicator
Light Abnormal SLIP Indicator
Remains ONDoes not light up
Check Item
NormalMalfunction Code (Code )
NormalMalfunction Code (Code )
ABS Warning Light
Malfunction
Indicator Light TRAC & VSC Check Sheet
Remains ONDoes not light up
VSC does not operate. (Wheels sideslip at the time of sharp turning.)
VSC TRC Warning
Indicator Abnormal
Skid Control
Buzzer AbnormalDoes not soundSounds
VSC/TRC OFF SW
SYSTEMFreeze Frame Data
SHIFT POSITION
YAW RATON
OFF
VSC/TRC
P, NR
D
deg/s
VFAIL
23
4L
MAS CYL PRESS
THROTTLE
MAS PRESS GRADE
G (RIGHT&LEFT)
G (BACK&FORTH)
STEERING ANG
deg
deg
MPa/s
G
G DI-504
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
697 Author: Date:
2004 LAND CRUISER (RM1071U)
Page 896 of 3115
ECU
Power source* Hydraulic brake booster Motor relay circuit Accumulator malfunction
Pump motor circuit Pressure switchPH
PL
Pump motor
MTT wire harness
MT+ wire harness
MT- wire harness
MR1 open circuit
MR2 open circuit
MR1 welded contact
MR2 welded contact
Pressure leaks
IG2 open circuit
Power supply circuit
Light Buzzer Light Light Light Light Light LightBuzzer Buzzer Buzzer Buzzer Buzzer Buzzer
DTC
BRAKE warning light and buzzerC1242/42 C1251/51 C1252/52 C1253/53 C1254/54 C1256/56 C1257/57
*: When IG1 circuit is open, the ABS warning light and BRAKE warning light come on.
DI-520
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
713 Author: Date:
2004 LAND CRUISER (RM1071U)
Table of Trouble Part and DTC:
Page 897 of 3115
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-521
714 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC chart of VSC:
DTC No.
(See Page)Detection ItemTrouble Area
C1231 / 31
(DI-546)Malfunction in steering angle sensorSteering angle sensor
Steering angle sensor circuit
C1232 / 32
(DI-551)Malfunction in deceleration sensorDeceleration sensor
Deceleration sensor circuit
C1233 / 33
(DI-553)Open or short in yaw rate sensor circuitYaw rate sensor
Yaw rate sensor circuit
C1234 / 34
(DI-553)Malfunction in yaw rate sensorYaw rate sensor
Yaw rate sensor circuit
C1335 / 35
(DI-546)Open circuit in steering angle sensorSteering angle sensor
Steering angle sensor circuit
C1210 / 36
(DI-538)Zero point calibration of yaw rate sensor undone
Yaw rate sensor
Yaw rate sensor circuit
PNP switch circuit (P position)
C1336 / 39
(DI-609)Zero point calibration of deceleration sensor undone
Deceleration sensor
Deceleration sensor circuit
PNP switch (P position) circuit
C1223 / 43
(DI-540)Malfunction in ABS control systemABS control system
C1224 / 44
(DI-541)Open or short in NE signal circuit
NEO circuit
ECM
Skid control ECU
C1290 / 66
(DI-608)Zero point calibration of steering sensor undoneSteering angle sensor zero point calibration
Yaw rate sensor zero point calibration
C1340 / 47
(DI-612)Open circuit in center differential lock signalCenter differential lock system
Center differential lock circuit
C1201 / 51
(DI-535)ECM system malfunctionEngine control system
C1203 / 53
(DI-536)ECM communication circuit malfunction
TRC+ or TRC- circuit
ENG+ or ENG- circuit
ECM
Always ON
(DI-627)Malfunction in skid control ECU
Open in VSC TRAC warning light circuitPower source circuit
VSC TRAC warning light circuit
HINT:
There is a case that TOYOTA hand-held tester cannot be used when the VSC TRAC warning light is always
on.
Page 898 of 3115
DIC8N-01
Vehicle Brought to Workshop
Customer Problem Analysis
P. DI-503
Check and Clear DTC (Precheck)
P. DI-505Items inside
are titles of pages in this manual,
with the page number in the bottom portion. See
the pages for detailed explanations.
Problem Symptom ConfirmationSymptom Simulation
P. IN-26
Symptom
does not occur
Symptom
occurs
DTC Check
P. DI-505
Sensor CheckCircuit Inspection
P. DI-615 - DI-653
DTC Chart
P. DI-518 Malfunction codeProblem Symptoms Table
P. DI-526
Check for Fluid Leakage
P. DI-655
Identification of Problem
Normal code
Repair
Confirmation Test
End
1
2
3
4
5
67
89
10
11
Step 2, 5, 8, 9, 11:
Diagnostic steps permitting the use of the
hand-held tester or break-out-box.
Fail safe function:
When a failure occurs in the ABS & BA & TRAC & VSC systems, the ABS and VSC warning lights are lit and
ABS & BA & TRAC & VSC operation is prohibited. In addition to this, when the failure which disables EBD opera-
tion occurs, the BRAKE warning light is lit as well and EBD operation is prohibited. DI-502
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
695 Author: Date:
2004 LAND CRUISER (RM1071U)
ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE
ASSIST (BA) SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshoot in accordance with the procedure on the following pages.
Page 899 of 3115
DIC8X-01
F17606
ABS Motor 1
Relay
ABS Motor 2
RelayABS Solenoid
Relay
Master Cylinder Pressure Sensor
Hydraulic Brake Booster
Check
Connector
Front Speed
Sensor Rotor
Front Speed Sensor
Engine Room J/BNeutral Start SwitchRear Speed Sensor
RotorRear Speed
Sensor
Steering Angle Sensor
Engine and ECT
ECU
Yaw Rate Sensor and
Deceleration Sensor DLC3
Stop Light Switch Skid Control ECU with
Warning Buzzer Combination Meter
ABS Warning Light
VSC TRC Warning Light
BRAKE Warning Light
VSC OFF Indicator Light
SLIP Indicator Light
ACTIVE TRC
Indicator Light
DI-522- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
715 Author: Date:
2004 LAND CRUISER (RM1071U)
PARTS LOCATION
Page 900 of 3115
F17604
DIC8S-02
F02201N09214F05476
DLC1
E1
Tc
TcDLC3
CG
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-505
698 Author: Date:
2004 LAND CRUISER (RM1071U)
PRE-CHECK
1. DIAGNOSIS SYSTEM
(a) Check the warning lights and buzzer.
(1) Release the parking brake lever.
(2) When the ignition switch is turned ON, check that
the ABS, VSC TRAC and BRAKE warning lights,
VSC OFF, SLIP and TRAC indicator lights come on
for 3 sec.
(3) When depressing the brake pedal repeatedly, it
may turn on the ABS, VSC TRAC and BRAKE warn-
ing lights, VSC OFF indicator light and buzzer.
HINT:
If the ECU stores DTC, the ABS, VSC TRAC and BRAKE
warning lights and VSC OFF indicator light come ON.
If the indicator check result is not normal, proceed to trou-
bleshooting for the ABS warning light circuit, VSC TRAC
warning light circuit, brake warning light circuit, VSC OFF
indicator light circuit, SLIP indicator light circuit and AC-
TIVE TRAC indicator light circuit.
Trouble AreaSee Page
ABS warning light circuitDI-627
VSC TRAC warning light circuitDI-631
BRAKE warning light circuitDI-635
VSC OFF indicator light circuitDI-645
SLIP indicator light circuitDI-639
TRAC indicator light circuitDI-642
(b) In case of not using hand-held tester:
Check the DTC.
(1) Using SST, connect terminals Tc and E
1 of the
DLC1 or Tc and CG of the DLC3.
SST 09843-18020 or 09843-18040
(2) Turn the ignition switch ON.
(3) Read the DTC from the ABS or VSC TRAC warning
light on the combination meter.
HINT:
If no code appears, inspect the Tc circuit, ABS or VSC
TRAC warning light circuit.
Trouble AreaSee page
Tc circuitDI-651
ABS warning light circuitDI-627
VSC TRAC warning light circuitDI-631
Page 901 of 3115
R01346
Normal Code
0.25 sec.
0.25 sec. 2 sec.
ON
OFF
ON
OFF0.5 sec. 0.5 sec.
Code 11 and 21
4 sec.1.5 sec.
2.5 sec.
Code 11 Code 21
F06425
Hand-held
Tester
DLC3
F05576
DI-506- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
699 Author: Date:
2004 LAND CRUISER (RM1071U)
As an example, the blinking patterns for normal code and
codes 11 and 21 are shown on the left.
(4) Codes are explained in the code table on page
DI-518.
(5) After completing the check, disconnect terminals Tc
and E
1 of the DLC1 or Tc and CG of the DLC3 and
turn off the display.
If 2 or more malfunctions are indicated at the same time the low-
est numbered DTC will be displayed 1st.
(c) In case of using hand-held tester:
Check the DTC.
(1) Hook up the hand-held tester to the DLC3.
(2) Turn the ignition switch ON.
(3) 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.
(d) In case of not using hand-held tester:
Clear the DTC.
(1) Using SST, connect terminals Tc and E
1 of the
DLC1 or Tc and CG of the DLC3.
SST 09843-18020 or 09843-18040
(2) Turn the ignition switch ON.
(3) Clear the DTC stored in the ECU by depressing the
brake pedal 8 or more times within 5 sec.
(4) Check that the warning light shows the normal
code.
(5) Remove the SST from the terminals of the DLC1 or
DLC3.
SST 09843-18020 or 09843-18040
