F17763 EXI WT A43 A43 IX1 F15 Cowl Side J/B RH Cowl Side J/B RH Cowl Side J/B RH Cowl Side J/B LH I18 Ignition SW Engine Room J/B Combination Meter ABS & BA & TRAC & VSC ECU SB D4 Detection SW (Center Diff. Lock) 2 W-B P-B SB SB SB MET 1 2 47 3E 3Q 563 3Q 3B 3Q 3B J4 J/C B-RB-R A A P-B L-R W-RAM2IG2 76 4110 2E2A 1 9 1C 1B 2 B-G EC FL Block Battery MAIN EC BR W-R 8 IX1 VSC OFF 17 C13 C12 C15 1 10 3 7 14 26 AM2 DI-624 - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM 817 Author:Date: 2004 LAND CRUISER (RM1071U) DTCAlways ONMalfunction in ECU VSC TRAC Warning Light Circuit CIRCUIT DESCRIPTION Always ON There is a malfunction in the ECU internal circuit. Power source circuit Skid control ECU VSC TRAC warning light circuit HINT: If the fail safe function is activated in the VSC system, ”VSC OFF” indicator light lights up. WIRING DIAGRAM DICA4-01 Toyota Land Cruiser 1998 2007 Diagnostics Service Repair Manual Full download: http://manualplace.com/download/toyota-land-cruiser-1998-2007-diagnostics-service-repair-manual/ This is the cut pages sample. Download all 1017 page(s) at: ManualPlace.com
YESCheck for open or short circuit in harness and connector between ECU-IG fuse and ECU (See page IN-36 ). NO 4Check battery positive voltage.
- DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-625 818 Author:Date: 2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1Check that the ECU connectors are securely connected to the ECU. NOConnect the connector to the ECU. YES 2Is DTC output for VSC? Check the DTC on page DI-505 YESRepair circuit indicated by the output code. NO 3Does VSC TRAC warning light go off?
PREPARATION: Start the engine. CHECK: Check the battery positive voltage. OK: Voltage: 10 to 16 V NGCheck and repair the charging system. OK
5Check operation of the VSC TRAC warning light.
In case of using the hand-held tester:
PREPARATION:
(a)Connect the hand-held tester to the DLC3.
(b)Turn the ignition switch ON and push the hand-held tester main switch ON.
(c)Select the ACTIVE TEST mode on the hand-held tester.
CHECK:
Check that ”ON” and ”OFF” of the VSC TRAC warning light can be shown on the combination meter on the hand-held tester.
In case of not using the hand-held tester:
PREPARATION:
(a)Turn the ignition switch OFF.
(b)Disconnect the connector from the skid control ECU. (c)Turn the ignition switch ON.
CHECK: Check that the VSC TRAC warning light goes off.
NGCheck and replace combination meter (See page BE-2 ).
OK 6 Check for short circuit in harness and connector between combination meter and skid control ECU, combination meter and DLC1 (See page IN-36 ).
NGRepair or replace harness or connector.
OK
Check and replace skid control ECU.
DI-626 - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) &
819 Author:Date:
BRAKE ASSIST (BA) SYSTEM
2004 LAND CRUISER (RM1071U)
CIRCUIT DESCRIPTION
F17718 F18533 ABS & BA & TRAC & VSC ECU Engine Room J/B Combination Meter Cowl Side J/B RH Cowl Side J/B LH I18 Ignition SW Cowl Side J/B RH WA 1 A42 4 3A 5 3Q 12 C12 41 2E 10 2A 1B 91 1C AM2 W-R B-R C12 C15 EC SB BR 8 IX1 3Q SB 7 MET 4 3E B-R B-G FL Block SBR-L W-R 76 AM2IG2 J4 J/C AA 2 F15 Battery 1 10 MAIN ABS - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-627 820 Author:Date: 2004 LAND CRUISER (RM1071U) ABS Warning Light Circuit
If the ECU
it lights the ABS warning light while at the same time prohibiting ABS control.
this
DTC
DLC1
Tc
DLC3 to
ABS warning light
WIRING
DICA5-02
detects trouble,
At
time, the ECU records a
in memory. Connect terminals Tc and E1 of the
or
and CG of
make the
blink and output the DTC.
DIAGRAM
INSPECTION PROCEDURE
HINT:
Troubleshoot in accordance with the table below for each trouble symptom.
ABS warning light does not light up *1
ABS warning light remains on *2
*1: Start the inspection from step 1 in case of using the hand-held tester and start from step 2 in case of not using the hand-held tester.
*2: After inspection with step 4, start the inspection from step 5 in case of using the hand-held tester and start from step 6 in case of not using hand-held tester.
1Check operation of the ABS warning light.
PREPARATION:
(a)Connect the hand-held tester to the DLC3.
(b)Turn the ignition switch ON and push the hand-held tester main switch ON.
(c)Select the ACTIVE TEST mode on the hand-held tester.
CHECK:
Check that ”ON” and ”OFF” of the ABS warning light can be shown on the combination meter on the handheld tester.
OKCheck and replace skid control ECU.
NG
2Does the warning lights other than ABS warning light come on?
YESRepair ABS warning light bulb or combination meter assembly. NO
DI-628 - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM 821 Author:Date: 2004 LAND CRUISER (RM1071U)
PREPARATION: Remove the IG1 No. 1 relay from the engine room J/B. CHECK: Check continuity between the IG1 No. 1 relay terminals listed in the table below. OK: Terminals 3 and 4 Continuity Terminals 1 and 2 Open
CHECK: (a)Apply battery positive voltage between terminals 3 and 4. (b)Check continuity between terminals. OK: Terminals 1 and 2 Continuity NGReplace IG1 No. 1 relay.
1 2 3 4 (+)
1 2 3 4 1 2 3 4 Open
- DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-629 822 Author:Date: 2004 LAND CRUISER (RM1071U)
F00044
(-) Continuity
Continuity
3Check IG1 No. 1 relay.
for open circuit in harness and connector between IG1 No. 1 relay and combination meter (See page IN-36 ).
OK Check
4Check that the ECU connectors are securely connected to the ECU.
NOConnect the connector to the ECU. YES 5Check operation of the ABS warning light (See step 1).
OKCheck and replace skid control ECU. NG 6Is DTC output? Check the DTC on page DI-505
YESRepair circuit indicated by the output code. NO 7 Check for short circuit in harness and connector between ABS warning light and skid control ECU (See page IN-36 ). NGRepair or replace harness or connector. OK
Check and repair skid control ECU.
DI-630 - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM 823 Author:Date:
2004 LAND CRUISER (RM1071U)
F17750 F18532 ABS & BA & TRAC & VSC ECU Cowl Side J/B RH Combination Meter Cowl Side J/B RH Engine Room J/B Cowl Side J/B LH Cowl Side J/B LH I18 Ignition SW FL Block Cowl Side J/B LH WA IG2 A42 A44 R-L 3A 4 3Q 5 SB C12 12 ABS 10 C12 C15 1 SB IX1 8 BR EC IF IF EE W-B 3 2A 2B 13 A41 6 A41 31 A42 8 A42 17 A42 6 GND4 GND3 GND1 GND2 3Q 7 3B 22 MET IGN 3E 4 B-R A A J4 J/C B-R 6 4 7 2 AM2IG2 AM1 IG1 B-W B-R L-B 2E 37 2B 18 2E 39 ECU-IG1 2 3 5 1 IG1 No.2 Relay 2C 1 B-G F16 1 B-G F15 2 J/B No.2 ALT MAIN Battery W-R 2A 10 2E 41 1C 1 AM2 1B 9 B-R SB AM1 1 22 IG1 W-B W-B W-B W-B W-B W-R W-B W-B - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-621 814 Author:Date: 2004 LAND CRUISER (RM1071U) DTCAlways ONMalfunction in ECU CIRCUIT DESCRIPTION DTC No. DTC Detecting Condition Trouble Area Always ON Either of the following 1. or 2. is detected: 1.The ECU connectors are disconnected from the ECU. 2.There is a malfunction in the ECU internal circuit. Battery IC regulator Power source circuit Skid control ECU HINT: The hand-held tester may not be used when the ECU is abnormal. WIRING DIAGRAM DICA3-01
DI-622 - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM 815 Author:Date: 2004 LAND CRUISER (RM1071U)
PROCEDURE
YES 2Is DTC output?
NO 3Does ABS
NO 4Check battery
voltage.
OK
INSPECTION
1Check that the ECU connectors are securely connected to the ECU. NOConnect the connector to the ECU.
Check the DTC on page DI-505 YESRepair circuit indicated by the output code .
warning light go off? YESCheck for open or short circuit in harness and connector between ECU-IG fuse and ECU (See page IN-36 ).
positive
PREPARATION: Start the engine. CHECK: Check the battery positive voltage. OK: Voltage: 10 to 14 V NGCheck and repair the charging system.
5Check operation of the ABS warning light.
In case of using the hand-held tester:
PREPARATION:
(a)Connect the hand-held tester to the DLC3.
(b)Turn the ignition switch ON and push the hand-held tester main switch ON.
(c)Select the ACTIVE TEST mode on the hand-held tester.
CHECK:
Check that ”ON” and ”OFF” of the ABS warning light can be shown on the combination meter by the handheld tester.
In case of not using the hand-held tester:
PREPARATION:
(a)Turn the ignition switch OFF.
(b)Disconnect the connector from the skid control ECU.
(c)Using a service wire, connect terminal WA of the skid control ECU harness side connector and body ground.
(d)Turn the ignition switch ON.
CHECK:
Check that the ABS warning goes off.
OKCheck and replace combination meter (See page BE-2 ).
NG
6Check for short circuit in harness and connector between combination meter and skid control ECU, combination meter and DLC1 (See page IN-36 ).
NGRepair or replace harness or connector.
OK
Check and replace skid control ECU.
2004 LAND CRUISER (RM1071U)
- DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE
(BA) SYSTEM DI-623 816 Author:Date:
ASSIST
Brake Warning and VSC Buzzer Circuit
CIRCUIT DESCRIPTION
The brake warning and VSC buzzer sounds while the accumulator pressure is abnormally low or an abnormality casing low fluid pressure occurs VSC is activated.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT: Start the inspection from step 1 in case of using the hand-held tester and start from step 2 in case of not using the hand-held tester.
1Check operation of the brake warning and VSC buzzer.
PREPARATION:
(a)Connect the hand-held tester to the DLC3.
(b)Turn the ignition switch ON and push the hand-held tester main switch ON.
(c)Select the ACTIVE TEST mode on the hand-held tester.
CHECK: Check that brake warning and VSC buzzer sounds ”ON” and ”OFF” with the hand-held tester.
OKCheck and replace skid control ECU.
F09989 ABS & BA & TRAC & VSC ECU V8 VSC
LH
BZ
2 L B-W 2
18
- DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-649 842 Author:Date: 2004 LAND CRUISER (RM1071U)
Warmning Buzzer Cowl Side J/B
ECU-IG1
A42
1 2B
Buzzer
NG DICAB-01
2Check brake warning and VSC buzzer.
PREPARATION: Disconnect the brake warning and VSC buzzer connector. CHECK: Apply battery positive voltage to terminals 1 and 2 of the brake warning and VSC buzzer connector. Check that the brake warning light comes on and the VSC buzzer sounds.
NGReplace brake warning and VSC buzzer.
OK 3Check for open and short circuit in harness and connector between skid control ECU and brake warning and VSC buzzer (See page IN-36 ).
NGRepair or replace harness or connector.
OK Check and replace skid control ECU.
DI-650 - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL
&
843 Author:Date:
F02192 1 2 (+)(-)
(VSC)
BRAKE ASSIST (BA) SYSTEM
2004 LAND CRUISER (RM1071U)
F16083 Cowl Side J/B RH I18 Ignition SW ABS & BA & TRAC & VSC Actuator Cowl Side J/B LH Engine Room J/B F15 FL Block AM2 P8 Parking Brake SW Battery Brake BRL A43 5 Y-G 3A 11 3Q 6 SB 3E 4 MET 3Q 7 SB C14 19 C12 10 C15 1 C14 20 2B 20 IX1 A A A42 13 2Q 36 A40 LBL 2 Y-G 2K R-W 27 AM2 2A 10 1B 9 EC 2 MAIN 6 IG2 J4 J/C B-R Combination Meter 1 W-R B-G BR 8 SB SB 2E 2B 41 4 SB 7 PKB R-W 1C 1 W-R B-R ABS & BA & TRAC & VSC ECU - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-635 828 Author:Date: 2004 LAND CRUISER (RM1071U) BRAKE Warning Light Circuit
DESCRIPTION The BRAKE warning light lights up while the brake fluid is insufficient and EBD is abnormal. WIRING DIAGRAM DICA7-02
CIRCUIT
1Check parking brake switch circuit (See page BE-63 ).
NGRepair or replace parking brake switch circuit. OK 2Check brake fluid level warning switch circuit (See page BE-63 ).
NGRepair
DI-636 - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM 829 Author:Date: 2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
DTC output for
or replace brake fluid level warning switch circuit. OK 3Is
ABS?
the
than
NO
YESRepair circuit indicated by the output code. NO 4Do
warning lights other
BRAKE warning light come on? YESGo to step 6.
PREPARATION:
Remove the IG1 No. 1 relay from the engine room J/B. CHECK: Check continuity between the IG1 No. 1 relay terminals listed in the table below. OK:
Terminals 3 and 4 Continuity Terminals 1 and 2 Open
CHECK:
(a)Apply battery positive voltage between terminals 3 and 4. (b)Check continuity between terminals. OK:
Terminals 1 and 2 Continuity NGReplace IG1 No. 1 relay.
F00044 1 2 3 4 (+) (-)
1 2 3 4 1 2 3 4 Open Continuity - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-637 830 Author:Date: 2004 LAND CRUISER (RM1071U)
1 relay.
Continuity
5Check IG1 No.
OK Check for open circuit in harness and connector between IG1 No. 1 relay and combination meter (See page IN-36 ). 6Check that the ECU connectors are securely connected to the ECU. NOConnect the connector to the ECU. YES
7Check BRAKE warning light.
Check if that the open circuit in the combination meter circuit (See page BE-58 ).
NGRepair brake warning light bulb or combination meter assembly.
OK 8 Check for short circuit in harness and connector between brake warning light and skid control ECU (See page IN-36 ).
NGRepair or replace harness or connector.
OK
Check and repair skid control ECU.
DI-638 - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) &
831 Author:Date: 2004
BRAKE ASSIST (BA) SYSTEM
LAND CRUISER (RM1071U)
DTC C0226 / 21 - C0256 / 24 ABS
CIRCUIT DESCRIPTION
Solenoid Circuit
This solenoid goes on when signals are received from the ECU and controls the pressure acting on the wheel cylinders thus controlling the braking force.
DTC No.
C0226 / 21
C0236 / 22
C0246 / 23
C0256 / 24
DTC Detecting Condition
Open or short in SFRH or SFRR circuit continues for 0.015 sec. or more.
Open or short in SFLH or SFLR circuit continues for 0.015 sec. or more.
Open or short in SRRH or SRRR circuit continues for 0.015 sec. or more.
Open or short in SRLH or SRLR circuit continues for 0.015 sec. or more.
Hydraulic brake booster SFRH or SFRR circuit
Hydraulic brake booster SFLH or SFLR circuit
Hydraulic brake booster SRRH or SRRR circuit
Hydraulic brake booster SRLH or SRLR circuit
Trouble Area
DI-528 - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST
SYSTEM 721 Author:Date: 2004 LAND CRUISER (RM1071U)
(BA)
DIC95-01
F17705 SFLH SFLR SFRH SFRR SRLH SRLR SRRH SRRR AST BS Batter FL Block MAIN ABS No.1 ABS SOL Relay Engine Room R/B ABS & BA & TRAC & VSC Actuator ABS & BA & TRAC & VSC ECU SFLH SFLR SFRH SFRR SRLH SRLR SRRH SRRR AST A39 8 A41 21 A44 16 A39 A39 A39 A39 A39 A39 A39 A38 A37 A41 A41 A41 A41 A41 7 10 9 4 3 2 1 1 4 7 8 7 1 9 8 6 19 1 A44 A44 A44 A44 Y B-Y LG B-W R-W R-Y G-Y P B-R L-B B-O R-G W 1 1 1 1 1 1 1 1 3 6 4 2 Engine Room J/B and Engine Room R/B 1C B-R F15 2 SR R1+ - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-529 722 Author:Date: 2004 LAND CRUISER (RM1071U) WIRING DIAGRAM
INSPECTION PROCEDURE
1Check hydraulic brake booster solenoid.
PREPARATION: Disconnect the 2 connectors from the hydraulic brake booster. CHECK: Check continuity between terminals A43 - 4 and A45 - 1, 2, 3, 4, 7, 8, 9 and 10 of the hydraulic brake booster connector.
OK: Continuity HINT: Resistance of each solenoid at 20 °C (68 °F): SFRH, SFLH, SRRH, SRLH: 6.95 to 7.45 Ω SFRR, SFLR, SRRR, SRLR: 2.00 to 2.40 Ω
NGReplace hydraulic brake booster.
OK 2Check for open and short circuit in harness and connector between skid control ECU and actuator (See page IN-36 ).
NGRepair or replace harness or connector.
OK
If the same code is still output after the DTC is deleted, check the contact condition of each connection. If the connections are normal, the ECU may be defective.
F02855 LOCK
A45
1
DI-530 - DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM 723 Author:Date: 2004 LAND CRUISER (RM1071U)
A43
4
2 3 4 10 9 8 7
Full download: http://manualplace.com/download/toyota-land-cruiser-1998-2007-diagnostics-service-repair-manual/
DTC
C0278 / 11, C0279 / 12 ABS
CIRCUIT DESCRIPTION
Solenoid Relay Circuit
This relay supplies power to each ABS solenoid. After the ignition switch is turned ON, if the initial check is OK, the relay goes on.
DTC No.
C0278 / 11
DTC Detecting Condition
Conditions 1. and 2. continue for 0.2 sec. or more:
1.ECU terminal IG1 voltage is 9.5 V to 17.0 V and the solenoid relay is ON, however, the contact point of the solenoid relay is OFF.
2.With solenoid relay ON, ECU terminal IG1 voltage becomes 9.5 V or less and the contact point of the solenoid relay does not become ON.
C0279 / 12
Immediately after ECU terminal IG1 becomes ON, and solenoid relay is OFF, however, when the condition that the solenoid relay due to the contact point is ON continues for 0.2 sec. or more.
WIRING DIAGRAM
Refer to DTC C0226/21 on page DI-528 .
INSPECTION PROCEDURE
HINT:
Trouble Area
ABS solenoid relay ABS solenoid relay circuit
Start the inspection from step 1 in case of using the hand-held tester and start from step 2 in case of not using the hand-held tester.
1Check ABS solenoid relay operation.
PREPARATION:
(a)Connect the hand-held tester to the DLC3.
(b)Turn the ignition switch ON and push the hand-held tester main switch ON.
(c)Select the ACTIVE TEST mode on the hand-held tester.
CHECK:
Check the operation sound of the ABS solenoid relay when operating it with the hand-held tester. OK: The operation sound of the ABS solenoid relay should be heard.
OKGo to step 6.
NG
- DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE
SYSTEM DI-531 724 Author:Date:
ASSIST (BA)
2004 LAND CRUISER (RM1071U)
DIC98-02
Toyota Land Cruiser 1998 2007 Diagnostics Service Repair Manual
This is the cut pages sample. Download all 1017 page(s) at: ManualPlace.com
