DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK COMBINATION METER ASSEMBLY (INPUT VOLTAGE)
CHECK COMBINATION METER ASSEMBLY (OUTPUT VOLTAGE)
CHECK COMBINATION METER ASSEMBLY (SPEED SIGNAL)
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - SKID CONTROL ECU)
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - NO. 3 JUNCTION BLOCK)
CHECK HARNESS AND CONNECTOR (NO. 3 JUNCTION BLOCK)
SYSTEM CHECK
CHECK HARNESS AND CONNECTOR (NO. 3 JUNCTION BLOCK - WINDSHIELD WIPER SWITCH ASSEMBLY)
CHECK HARNESS AND CONNECTOR (NO. 3 JUNCTION BLOCK - POWER MANAGEMENT CONTROL ECU)
CHECK HARNESS AND CONNECTOR (NO. 3 JUNCTION BLOCK - JUNCTION CONNECTOR)
CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR)
CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR - RADIO RECEIVER ASSEMBLY)
CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR - RADIO AND DISPLAY RECEIVER ASSEMBLY)
CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR - NAVIGATION RECEIVER ASSEMBLY)
CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR - STEREO COMPONENT AMPLIFIER ASSEMBLY)
CHECK HARNESS AND CONNECTOR (NO. 3 JUNCTION BLOCK - NO. 4 JUNCTION BLOCK)
CHECK HARNESS AND CONNECTOR (NO. 4 JUNCTION BLOCK)
CHECK HARNESS AND CONNECTOR (NO. 4 JUNCTION BLOCK - CLEARANCE WARNING ECU)
CHECK HARNESS AND CONNECTOR (NO. 4 JUNCTION BLOCK - TCM)
CHECK HARNESS AND CONNECTOR (NO. 4 JUNCTION BLOCK - ECM)
CHECK HARNESS AND CONNECTOR (NO. 3 JUNCTION BLOCK - TIRE PRESSURE MONITOR RECEIVER ASSEMBLY)
METER / GAUGE SYSTEM - Speed Signal Circuit |
DESCRIPTION
The vehicle speed signal consists of pulses sent to the combination meter assembly from the master cylinder solenoid*1 or brake actuator assembly (skid control ECU)*2. - *1: for 1GR-FE, 1KD-FTV, 1GD-FTV
- *2: for 2TR-FE, 5L-E
WIRING DIAGRAM
INSPECTION PROCEDURE
1.CHECK COMBINATION METER ASSEMBLY (INPUT VOLTAGE) |
Disconnect the combination meter assembly connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Switch Condition
| Specified Condition
|
G6-32 (+S) - Body ground
| Ignition switch ON
| 4.5 to 14 V
|
Text in Illustration*a
| Front view of wire harness connector (to Combination Meter Assembly)
|
2.CHECK COMBINATION METER ASSEMBLY (OUTPUT VOLTAGE) |
for 1GR-FE, 1KD-FTV, 1GD-FTV:
Disconnect the master cylinder solenoid (skid control ECU) connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Switch Condition
| Specified Condition
|
A7-12 (SP1) - Body ground
| Ignition switch ON
| 11 to 14 V
|
Text in Illustration*a
| Front view of wire harness connector (to Master Cylinder Solenoid [Skid Control ECU])
|
for 2TR-FE, 5L-E:
Disconnect the brake actuator assembly (skid control ECU) connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Switch Condition
| Specified Condition
|
A6-11 (SP1) - Body ground
| Ignition switch ON
| 11 to 14 V
|
Text in Illustration*a
| Front view of wire harness connector (to Brake Actuator Assembly [Skid Control ECU])
|
3.CHECK COMBINATION METER ASSEMBLY (SPEED SIGNAL) |
Check the input waveform.
Remove the combination meter assembly with the connector(s) still connected (LandCruiser RM000003QKY01CX.html).
Connect an oscilloscope to terminal G6-33 (SI) and body ground.
Turn the ignition switch to ON.
Check the signal waveform according to the condition(s) in the table below.
Measurement ConditionItem
| Condition
|
Terminal No. (Symbol)
| G6-33 (SI) - Body ground
|
Tool setting
| 5 V/DIV., 20 ms./DIV.
|
Condition
| Driving at approximately 20 km/h (12 mph)
|
Text in Illustration*a
| Component with harness connected (Combination Meter Assembly)
|
- OK:
- The waveform displayed is as shown in the illustration.
- HINT:
- When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by A in the illustration narrows.
ResultResult
| Proceed to
|
OK
| A
|
NG (for LHD, w/ Hydraulic Brake Booster)
| B
|
NG (for RHD, w/ Hydraulic Brake Booster)
| C
|
NG (w/ Vacuum Brake Booster)
| D
|
4.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - SKID CONTROL ECU) |
for 1GR-FE, 1KD-FTV, 1GD-FTV:
Disconnect the G6 combination meter assembly connector.
Disconnect the A7 master cylinder solenoid (skid control ECU) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
G6-33 (SI) - A7-12 (SP1)
| Always
| Below 1 Ω
|
A7-12 (SP1) - Body ground
| Always
| 10 kΩ or higher
|
for 2TR-FE, 5L-E:
Disconnect the G6 combination meter assembly connector.
Disconnect the A6 brake actuator assembly (skid control ECU) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
G6-33 (SI) - A6-11 (SP1)
| Always
| Below 1 Ω
|
A6-11 (SP1) - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - NO. 3 JUNCTION BLOCK) |
Disconnect the G6 combination meter assembly connector.
Disconnect the 3A No. 3 junction block connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
G6-32 (+S) - 3A-59
| Always
| Below 1 Ω
|
G6-32 (+S) - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6.CHECK HARNESS AND CONNECTOR (NO. 3 JUNCTION BLOCK) |
Inspect for a short in the circuit that is connected to the junction block connector shown in the wiring diagram.
- HINT:
- If the voltage is not as specified, it is possible that an ECU or circuit has a malfunction. The malfunctioning ECU or circuit will be diagnosed in the following steps.
Disconnect the No. 3 junction block connectors.
Text in Illustration*1
| No. 3 Junction Block
| -
| -
|
*a
| Front view of wire harness connector (to No. 3 Junction Block)
| -
| -
|
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Condition
| Specified Condition
|
3C-24 - Body ground*1
| Ignition switch ON
| 4.5 to 14 V
|
3B-72 - Body ground*2
| Ignition switch ON
| 4.5 to 14 V
|
3A-22 - Body ground*3
| Ignition switch ON
| 4.5 to 14 V
|
3A-60 - Body ground
| Ignition switch ON
| 4.5 to 14 V
|
3A-35 - Body ground*4
| Ignition switch ON
| 4.5 to 14 V
|
- *1: w/ Auto Wiper System
- *2: w/ Entry and Start System
- *3: w/ Audio and Visual System or Navigation System
- *4: w/ Tire Pressure Monitor System
ResultResult
| Proceed to
|
Voltage is not as specified in one circuit
| A
|
Voltage is as specified in all circuits
| B
|
| REPLACE NO. 3 JUNCTION BLOCK |
|
|
Select the circuit for which voltage was not as specified in the previous step.
ResultTester Connection
| System that Uses the Circuit
| Proceed to
|
3C-24 - Body ground
| Auto wiper system*1
| A
|
3B-72 - Body ground
| Entry and start system*2
| B
|
3A-22 - Body ground
| Audio and visual system*3 or navigation system*4
| C
|
3A-60 - Body ground
| SFI system, TOYOTA parking assist-sensor system*5, automatic transmission system*6, *7
| D
|
3A-35 - Body ground
| Tire pressure monitor system*8
| E
|
- *1: w/ Auto Wiper System
- *2: w/ Entry and Start System
- *3: w/ Audio and Visual System
- *4: w/ Navigation System
- *5: w/ TOYOTA Parking Assist-sensor System
- *6: for 1KD-FTV
- *7: for Automatic Transmission
- *8: w/ Tire Pressure Monitor System
8.CHECK HARNESS AND CONNECTOR (NO. 3 JUNCTION BLOCK - WINDSHIELD WIPER SWITCH ASSEMBLY) |
Disconnect the G120 auto wiper switch connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
G120-6 (SPD) - Body ground*1, *2
| Always
| 10 kΩ or higher
|
G120-4 (SPD) - Body ground*3
| Always
| 10 kΩ or higher
|
- *1: for LHD
- *2: for RHD, LH Side Type
- *3: for RHD, RH Side Type
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
9.CHECK HARNESS AND CONNECTOR (NO. 3 JUNCTION BLOCK - POWER MANAGEMENT CONTROL ECU) |
Disconnect the G51 power management control ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
G51-23 (SPD) - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
10.CHECK HARNESS AND CONNECTOR (NO. 3 JUNCTION BLOCK - JUNCTION CONNECTOR) |
Disconnect the 3A No. 3 junction block connector.
Disconnect the H24 junction connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
3A-22 - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
11.CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR) |
Inspect for a short in the circuit that is connected to the junction connector shown in the wiring diagram.
Disconnect the junction connector.
Text in Illustration*a
| Front view of wire harness connector (Junction Connector)
|
Measure the voltage according to the value(s) in the table below
- Standard Voltage:
Tester Connection
| Switch Condition
| Specified Condition
|
H25-10 - Body ground*1
| Ignition switch ON
| 4.5 to 14 V
|
H25-11 - Body ground*2
| Ignition switch ON
| 4.5 to 14 V
|
- *1: w/ Audio and Visual System or Navigation System
- *2: w/ Stereo Component Amplifier
ResultResult
| Proceed to
|
NG (H25-10 - Body ground)
| A
|
NG (H25-11 - Body ground)
| B
|
OK
| C
|
| |
|
| REPLACE JUNCTION CONNECTOR |
|
|
12.CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR - RADIO RECEIVER ASSEMBLY) |
- NOTICE:
- For vehicles with an audio and visual system (for radio and display type), go to "Check Harness and Connector (Junction Connector - Radio and Display Receiver Assembly)".
Disconnect the H47 radio receiver assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
H47-17 (SPD) - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
13.CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR - RADIO AND DISPLAY RECEIVER ASSEMBLY) |
- NOTICE:
- For vehicles with a navigation system, go to "Check Harness and Connector (Junction Connector - Navigation Receiver Assembly)".
Disconnect the H51 radio and display receiver assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
H51-17 (SPD) - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
14.CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR - NAVIGATION RECEIVER ASSEMBLY) |
Disconnect the H56 navigation receiver assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
H56-17 (SPD) - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
15.CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR - STEREO COMPONENT AMPLIFIER ASSEMBLY) |
Disconnect the H63 stereo component amplifier assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
H63-11 (SPD) - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
16.CHECK HARNESS AND CONNECTOR (NO. 3 JUNCTION BLOCK - NO. 4 JUNCTION BLOCK) |
Disconnect the 3A No. 3 junction block connector.
Disconnect the 4A No. 4 junction block connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
3A-60 (+S) - 4A-48
| Always
| Below 1 Ω
|
3A-60 (+S) - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
17.CHECK HARNESS AND CONNECTOR (NO. 4 JUNCTION BLOCK) |
Inspect for a short in the circuit that is connected to the junction connector shown in the wiring diagram.
Disconnect the No. 4 junction block connectors.
Text in Illustration*1
| No. 4 Junction Block
| -
| -
|
*a
| Front view of wire harness connector (to No. 4 Junction Block)
| -
| -
|
Measure the voltage according to the value(s) in the table below
- Standard Voltage:
Tester Connection
| Switch Condition
| Specified Condition
|
4B-49 - Body ground*1
| Ignition switch ON
| 4.5 to 14 V
|
4B-1 - Body ground*2, *3
| Ignition switch ON
| 4.5 to 14 V
|
4A-96 - Body ground
| Ignition switch ON
| 4.5 to 14 V
|
- *1: w/ TOYOTA Parking Assist-sensor System
- *2: for 1KD-FTV
- *3: for Automatic Transmission
ResultResult
| Proceed to
|
NG (4B-49 - Body ground)
| A
|
NG (4B-1 - Body ground)
| B
|
NG (4A-96 - Body ground)
| C
|
OK
| D
|
| |
|
| |
|
| REPLACE NO. 4 JUNCTION BLOCK |
|
|
18.CHECK HARNESS AND CONNECTOR (NO. 4 JUNCTION BLOCK - CLEARANCE WARNING ECU) |
Disconnect the I1 clearance warning ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
I1-3 (SPD) - Body ground
| Always
| 10 kΩ or higher
|
ResultResult
| Proceed to
|
OK (for LHD)
| A
|
OK (for RHD)
| B
|
NG
| C
|
| |
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
19.CHECK HARNESS AND CONNECTOR (NO. 4 JUNCTION BLOCK - TCM) |
Disconnect the G70 TCM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
G70-25 (SPD1) - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
20.CHECK HARNESS AND CONNECTOR (NO. 4 JUNCTION BLOCK - ECM) |
Disconnect the G55*1, G56*2, G181*3, G58*4, G184*5 or G182*6 ECM connector.
- *1: for 1GR-FE, Automatic Transmission
- *2: for 1GR-FE, Manual Transmission
- *3: for 2TR-FE
- *4: for 1KD-FTV
- *5: for 1GD-FTV
- *6: for 5L-E
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
for 1GR-FE, Automatic TransmissionTester Connection
| Condition
| Specified Condition
|
G56-12 (SPD) - Body ground
| Always
| 10 kΩ or higher
|
for 1GR-FE, Manual TransmissionTester Connection
| Condition
| Specified Condition
|
G55-18 (SPD) - Body ground
| Always
| 10 kΩ or higher
|
for 2TR-FETester Connection
| Condition
| Specified Condition
|
G181-23 (SPD) - Body ground
| Always
| 10 kΩ or higher
|
for 1KD-FTVTester Connection
| Condition
| Specified Condition
|
G58-30 (SPD) - Body ground
| Always
| 10 kΩ or higher
|
for 1GD-FTVTester Connection
| Condition
| Specified Condition
|
G184-10 (SPD) - Body ground
| Always
| 10 kΩ or higher
|
for 5L-ETester Connection
| Condition
| Specified Condition
|
G182-25 (SP1) - Body ground
| Always
| 10 kΩ or higher
|
- HINT:
- for 1GR-FE:
If it is necessary to replace the ECM, refer to the following procedures (LandCruiser RM00000329203TX.html).
- for 2TR-FE:
If it is necessary to replace the ECM, refer to the following procedures (LandCruiser RM000000VW203EX.html).
- for 1KD-FTV:
If it is necessary to replace the ECM, refer to the following procedures (LandCruiser RM0000013Z002CX.html).
- for 1GD-FTV:
If it is necessary to replace the ECM, refer to the following procedures (LandCruiser RM0000013Z002DX.html).
- for 5L-E:
If it is necessary to replace the ECM, refer to the following procedures (LandCruiser RM000000VW203FX.html).
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
21.CHECK HARNESS AND CONNECTOR (NO. 3 JUNCTION BLOCK - TIRE PRESSURE MONITOR RECEIVER ASSEMBLY) |
Disconnect the R41 tire pressure monitor receiver connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
R41-2 (SPD) - Body ground
| Always
| 10 kΩ or higher
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|