DESCRIPTION
Refer to DTCs C1401 and C1402 (See page ).
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
C1273 C1274 |
Stored only during test mode. |
|
C1403 C1404 |
One of the following conditions is met:
|
|
HINT:
CAUTION / NOTICE / HINT
NOTICE:
Check the speed sensor signal after cleaning or replacement (See page ).
PROCEDURE
1. |
CHECK REAR SPEED SENSOR INSTALLATION |
(a) Turn the ignition switch off.
(b) Check the speed sensor installation. OK: There is no clearance between the sensor and the rear axle. The installation nut is tightened properly. Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf) Text in Illustration
|
|
NG |
INSTALL REAR SPEED SENSOR CORRECTLY |
|
2. |
INSPECT REAR SPEED SENSOR TIP |
(a) Remove the rear speed sensor (See page ).
(b) Check the speed sensor tip.
OK:
No scratches, oil, or foreign matter on the sensor tip.
NOTICE:
If no damage to the speed sensor tip is found during this inspection, do not replace the speed sensor.
NG |
CLEAN OR REPLACE REAR SPEED SENSOR |
|
3. |
INSPECT REAR SPEED SENSOR ROTOR |
(a) Remove the rear axle hub and bearing assembly (See page ).
(b) Check the speed sensor rotor.
OK:
No scratches, oil, or foreign matter on the rotors.
HINT:
The rear speed sensor rotor is incorporated into the rear axle hub and bearing assembly.
If the rear speed sensor rotor needs to be replaced, replace it together with the rear axle hub and bearing assembly.
NG |
CLEAN OR REPLACE REAR AXLE HUB AND BEARING ASSEMBLY |
|
4. |
READ VALUE USING TECHSTREAM (REAR SPEED SENSOR) |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Start the engine.
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.
ABS/VSC/TRAC
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
RR Wheel Speed |
Rear speed sensor RH reading/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) |
Actual wheel speed |
No large fluctuations when driving at a constant speed. |
RL Wheel Speed |
Rear speed sensor LH reading/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) |
Actual wheel speed |
No large fluctuations when driving at a constant speed. |
(f) Check that there is no difference between the speed value output from the speed sensor displayed on the Techstream and the speed value displayed on the speedometer when driving the vehicle.
HINT:
Factors that affect the indicated vehicle speed include tire size, tire inflation and tire wear. The speed indicated on the speedometer has an allowable margin of error. This can be tested using a speedometer tester (calibrated chassis dynamometer). For details about testing and the margin of error, see the reference chart (See page ).
OK:
The speed value output from the speed sensor displayed on the Techstream is the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).
OK |
USE SIMULATION METHOD TO CHECK |
|
5. |
REPLACE REAR SPEED SENSOR |
(a) Replace the rear speed sensor (See page ).
|
6. |
RECONFIRM DTC |
(a) Clear the DTCs (See page ).
(b) Turn the ignition switch off.
(c) Start the engine.
(d) Drive the vehicle at a speed of 40 km/h (25 mph) or more or at least 60 seconds.
(e) Check if the same DTC is output (See page ).
Result
Result |
Proceed to |
---|---|
DTCs C1403 and C1404 are not output |
A |
DTCs C1403 and/or C1404 are output |
B |
A |
END |
B |
REPLACE REAR AXLE HUB AND BEARING ASSEMBLY |
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
The wireless door lock control system troubleshooting procedures are
based on the premise that the power door lock control system is operating
normally. Check the power door lock control system first before troubleshooting
the wireless door lock co ...
Low Power Supply Voltage Malfunction (C1241)
DESCRIPTION
If a malfunction is detected in the power supply circuit, the skid control ECU
(brake actuator assembly) stores this DTC and the fail-safe function prohibits ABS
operation.
This DTC is stored when the +BS terminal voltage deviates from the DTC detection
condition due to a malfunc ...
System Description
SYSTEM DESCRIPTION
1. SEAT BELT WARNING SYSTEM DESCRIPTION
(a) Seat belt warning light operation for driver seat belt:
The seat belt warning light on the combination meter assembly illuminates, blinks
or turns off in accordance with the driver seat belt state, vehicle speed, shift
lever posit ...