DESCRIPTION
The meter CPU receives vehicle speed signals from the skid control ECU via the CAN communication system (CAN No. 1 Bus). The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU. The skid control ECU supplies power to the vehicle speed sensor. The skid control ECU detects vehicle speed signals based on the pulses of the voltage.
HINT:
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
If the vehicle speed is outside the allowable range when tested, perform the
following procedure (See page ).
HINT:
Before starting the following inspection, check tire size and tire air pressure.
PROCEDURE
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check if a CAN communication DTC is output (See page
).
Result |
Proceed to |
---|---|
CAN communication DTC is not output. |
A |
CAN communication DTC is output. |
B |
B | ![]() |
GO TO CAN COMMUNICATION SYSTEM |
|
2. |
PERFORM ACTIVE TEST USING TECHSTREAM (SPEED METER OPERATION) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.
(e) Check the operation by referring to the table below.
Combination Meter
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Speed Meter Operation |
Speedometer |
0, 40, 80, 120, 160, 200, 240 km/h |
Confirm that the vehicle is stopped with the engine idling |
Acceptable range (km/h): [Control range → Speedometer display]
|
OK:
Speedometer indication is normal.
NG | ![]() |
REPLACE COMBINATION METER ASSEMBLY |
|
3. |
READ VALUE USING TECHSTREAM (VEHICLE SPEED METER) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Combination Meter / Data List.
(e) Check the values by referring to the table below.
Combination Meter
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Vehicle Speed Meter |
Vehicle speed/Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) |
Almost the same as actual vehicle speed (Speedometer tester) |
- |
OK:
Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).
OK | ![]() |
REPLACE COMBINATION METER ASSEMBLY |
|
4. |
READ VALUE USING TECHSTREAM (FR/FL/RR/RL WHEEL SPEED) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.
(e) Check the values by referring to the table below.
ABS/VSC/TRAC
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
FR Wheel Speed |
Vehicle speed/Min.: 0 mph (0 km/h), Max.: 202 mph (326 km/h) |
Almost the same as actual vehicle speed (Speedometer tester) |
- |
FL Wheel Speed |
Vehicle speed/Min.: 0 mph (0 km/h), Max.: 202 mph (326 km/h) |
Almost the same as actual vehicle speed (Speedometer tester) |
- |
RR Wheel Speed |
Vehicle speed/Min.: 0 mph (0 km/h), Max.: 202 mph (326 km/h) |
Almost the same as actual vehicle speed (Speedometer tester) |
- |
RL Wheel Speed |
Vehicle speed/Min.: 0 mph (0 km/h), Max.: 202 mph (326 km/h) |
Almost the same as actual vehicle speed (Speedometer tester) |
- |
OK:
Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).
NG | ![]() |
GO TO BRAKE CONTROL SYSTEM |
|
5. |
REPLACE SKID CONTROL ECU |
(a) Replace the skid control ECU with a new or a known good one (See page
).
OK:
The operation of the speedometer returns to normal.
OK | ![]() |
END |
NG | ![]() |
REPLACE COMBINATION METER ASSEMBLY |
TS and CG Terminal Circuit
DESCRIPTION
In the Test Mode (signal check), a malfunction in the speed sensor that cannot
be detected when the vehicle is stopped can be detected while driving.
Transition to the sensor check mode can be performed by connecting terminals
TS and CG of th ...
Throttle Actuator Control System - Stuck Open (P2111,P2112)
DESCRIPTION
The throttle actuator is operated by the ECM, and opens and closes the throttle
valve using gears. The opening angle of the throttle valve is detected by the throttle
position sensor, which is mounted on the throttle body. The throttle positio ...
Electrical Key Oscillator(for Center Floor)
Components
COMPONENTS
ILLUSTRATION
Installation
INSTALLATION
PROCEDURE
1. INSTALL ELECTRICAL KEY OSCILLATOR
(a) Engage the clamp and install the electrical key oscillator.
NOTICE:
Be careful when installing the electrical key osci ...