DESCRIPTION
Refer to DTCs C0200/31, C0205/32, C1235/35, and C1236/36 (See page BC-17).
DTCs C1273/73 to C1278/78 can be deleted when the speed sensor sends a vehicle speed signal or the Test Mode ends. DTCs C1273/73 to C1278/78 are output only in the Test Mode.
HINT:
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT: Start the inspection from step 1 when using the intelligent tester and start from step 3 when not using the intelligent tester.
1 READ VALUE OF INTELLIGENT TESTER (REAR SPEED SENSOR)
(a) Select the DATA LIST mode on the intelligent tester.
ABS:
(b) Check that there is the speed value output from the speed sensor displayed on the intelligent tester and the speed value displayed on the speedometer are almost the same when driving the vehicle.
OK: The speed value output from the speed sensor displayed on the intelligent tester is the same as the actual vehicle speed.
2 PERFORM TEST MODE INSPECTION (SIGNAL CHECK)
(a) Clear the DTC (See page BC-10).
(b) Perform sensor signal check in TEST MODE PROCEDURE (See page BC-3).
OK: All Test Mode DTCs are erased.
3 INSPECT REAR SPEED SENSOR INSTALLATION
(a) Turn the ignition switch off.
(b) Check the speed sensor installation.
OK: The installation nut is tightened properly.
There is no clearance between the sensor and the rear axle.
Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf)
NOTICE: Check the speed sensor signal after replacement (See page BC-3).
4 INSPECT SPEED SENSOR TIP
(a) Remove the rear speed sensor (See page BC-190).
(b) Check the sensor tip.
OK: No scratches or foreign matter on the sensor tip.
NOTICE: Check the speed sensor signal after cleaning or replacement (See page BC-3).
5 INSPECT HARNESS AND CONNECTOR (BETWEEN REAR SPEED SENSOR AND SKID CONTROL SENSOR WIRE)
(a) Install the rear speed sensor.
(b) Disconnect the rear speed sensor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance
RH:
LH:
NOTICE: Check the speed sensor signal after replacement (See page BC-3).
6 CHECK HARNESS AND CONNECTOR (BETWEEN SKID CONTROL ECU AND REAR SPEED SENSOR)
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance
RH:
LH:
7 INSPECT SPEED SENSOR AND SENSOR ROTOR SERRATIONS
(a) Connect the oscilloscope to terminals FR+ - FR- or FL+ - FL- of the skid control ECU.
(b) Drive the vehicle at about 30 km/h (19 mph), and check the signal waveform.
OK: A waveform as shown in the figure should be output.
HINT:
8 RECONFIRM DTC
(a) Clear the DTCs (See page BC-10).
(b) Drive the vehicle at a speed of approximately 32 km/h (20 mph) or more for 60 seconds or more.
(c) Check that the same DTCs are recorded (See page BC- 10).
HINT: Reinstall the sensors, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs.
Result
9 INSPECT SPEED SENSOR ROTOR
(a) Turn the ignition switch off.
(b) Remove the rear axle hub and bearing (See page AH- 16).
(c) Check the rotor.
OK: No scratches, oil, or foreign matter on the rotors.
NOTICE: Check the speed sensor signal after cleaning or replacement (See page BC-3).
REPLACE BRAKE ACTUATOR ASSEMBLY
Pressure Control Solenoid "C" Performance (Shift
Solenoid Valve SL3)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear
position (1st, 2nd, 3rd, 4th
or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory
to detect mechanical
troubles of the shift solenoid valves and valve bo ...
Yaw rate sensor check (when using intelligent tester)
(a) Check the output of the yaw rate sensor.
(1) Move the shift lever to the D position, drive the
vehicle at a speed of approximately 5 km/h (3
mph), and turn the steering wheel either to the
left or right 90° or more until the vehicle makes a
180° turn.
(2) Stop the vehicle and mov ...
Safety Connect
Safety Connect is a subscription-based telematics service that
uses Global Positioning System (GPS) data and embedded cellular
technology to provide safety and security features to subscribers.
Safety Connect is supported by Toyota’s designated
response center, which operates 24 hours per da ...