Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Tundra and 2005 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When replacing the master cylinder solenoid, perform zero point CALIBRATION .

HINT:

Start the inspection from step 1 when using the hand-held tester and start from step 3 when not using the hand-held tester.

Check harness and connector (momentary interruption) (See CHECK FOR INTERMITTENT PROBLEMS ).

CHECK:

Using the hand-held tester, check for any momentary interruption in the wire harness and connector corresponding to a DTC.

CHECK ITEM REFERENCE

Item	Measurement Item/Range (Display)	Normal Condition	Diagnostic Note
SPD SEN FR	FR speed sensor open detection/OPEN or NORMAL	OPEN: Momentary interruption NORMAL: Normal	-
SPD SEN FL	FL speed sensor open detection/OPEN or NORMAL	OPEN: Momentary interruption NORMAL: Normal	-
SPD SEN RR	RR speed sensor open detection/OPEN or NORMAL	OPEN: Momentary interruption NORMAL: Normal	-
SPD SEN RL	RL speed sensor open detection/OPEN or NORMAL	OPEN: Momentary interruption NORMAL: Normal	-

OK:

There are no momentary interruptions.

HINT:

Perform the above inspection before removing the sensor and connector.

NG: Check and replace harness or connector (each speed sensor circuit).
OK: Go to next step.

Check output value of speed sensor.

PREPARATION:

Connect the hand-held tester to the DLC3.
Turn the ignition switch to the ON position and push the hand-held tester main switch ON.
Select DATA LIST mode on the hand-held tester.

CHECK:

Check that there is no difference between the speed value output from the speed sensor displayed on the hand-held tester and the speed value displayed on the speedometer when driving the vehicle.

SPEED SENSOR OUTPUT VALUE

Item	Measurement Item/Range (Display)	Normal Condition	Diagnostic Note
WHEEL SPD FR	Wheel speed sensor (FR) reading/min.: 0 mph (0 km/h), max.: 202 mph (326 km/h)	Actual wheel speed	Similar speed as indicated on speedometer
WHEEL SPD FL	Wheel speed sensor (FL) reading/min.: 0 mph (0 km/h), max.: 202 mph (326 km/h)	Actual wheel speed	Similar speed as indicated on speedometer
WHEEL SPD RR	Wheel speed sensor (RR) reading/min.: 0 mph (0 km/h), max.: 202 mph (326 km/h)	Actual wheel speed	Similar speed as indicated on speedometer
WHEEL SPD RL	Wheel speed sensor (RL) reading/min.: 0 mph (0 km/h), max.: 202 mph (326 km/h)	Actual wheel speed	Similar speed as indicated on speedometer

OK:

The speed value output from the speed sensor displayed on the hand-held tester is the same as the actual vehicle speed.

NG: Go to step 4 .
OK: Go to next step.

Perform SIGNAL CHECK (TEST MODE) (See TEST MODE PROCEDURE ).

CHECK:

Check if DTCs are detected in test mode.

RESULT:

DTC OUTPUT RESULT

Test mode DTC is output	A
Test mode DTC is not output	B

B: Go to step 8 .
A: Go to next step.

Check sensor installation.
CHECK:

Check speed sensor installation.

OK:

The installation bolt is tightened properly.

Torque: 8.0 N.m (82 kgf.cm, 71 in.lbf)

There is no clearance between the sensor and the front steering knuckle or rear axle carrier.

Fig 1: Proper Methods For Installing Speed Sensor Bolt With Torque Specifications
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Install speed sensor correctly or replace speed sensor (See REMOVAL and REMOVAL ).
  NOTE: Check the speed sensor signal after replacement (see TEST MODE PROCEDURE ).
2. OK: Go to next step.
Check sensor tip.
Front:

PREPARATION:

Remove the front speed sensor (see REMOVAL ).

CHECK:

Check the sensor tip.

OK:

No scratches or foreign matter on the sensor tip.

HINT:

If foreign matter is identified (also on the sensor rotor side), remove it. After reassembling, check the output waveform.

Rear:

PREPARATION:

Remove the rear speed sensor (see REMOVAL ).

CHECK:

Check the sensor tip.

OK:

No scratches or foreign matter on the sensor tip.
1. NG: Clean or replace speed sensor.
  NOTE: Check the speed sensor signal after replacement (see TEST MODE PROCEDURE ).
2. OK: Go to next step.
Check for open or short circuit in harness and connector between each speed sensor and master cylinder solenoid.
1. NG: Repair or replace harness or connector.
2. OK: Go to next step.

Measure the voltage of the speed sensor.

PREPARATION:

Disconnect speed sensor connectors A6, A7 and A19.

CHECK:

Turn the ignition switch to the ON position.
Measure the voltage according to the value(s) in the table below.

Fig 2: Identifying Speed Sensor Connectors A6, A7 And A19 Connector Terminals

OK:

SPEED SENSOR CONNECTOR TERMINALS VOLTAGE SPECIFICATIONS

Tester Connection	Condition	Specified Condition
A6-2 (FL) - Body ground	Ignition switch ON	7.5 to 12 V
A7-2 (FR) - Body ground	Ignition switch ON	7.5 to 12 V
A19-2 (RL) - Body ground	Ignition switch ON	7.5 to 12 V
A19-4 (RR) - Body ground	Ignition switch ON	7.5 to 12 V

HINT:

If foreign matter is identified (also on the sensor rotor side), remove it. After reassembling, check the output waveform.

NG: Replace master cylinder solenoid (See DISASSEMBLY ).
OK: Go to next step.

Reconfirm DTC (See DTC CHECK / CLEAR ).
PREPARATION:
1. Clear the DTCs.
2. Drive the vehicle at more than 13 mph (20 km/h) for more than 60 seconds.
CHECK:

Check if the same DTCs are detected.

RESULT:
DTC OUTPUT RESULT (1 OF 2)

DTC is output A

DTC is not output B
1. B: END.
2. A: Go to next step.
Replace speed sensor (See REMOVAL and/or REMOVAL ).
1. NEXT: Go to next step.
Reconfirm DTC (See DTC CHECK / CLEAR ).
PREPARATION:
1. Clear the DTCs.
2. Drive the vehicle at more than 13 mph (20 km/h) for more than 60 seconds.
CHECK:

Check if the same DTCs are detected.

RESULT:
DTC OUTPUT RESULT (2 OF 2)

DTC is output A

DTC is not output B
1. B: END.
2. A: Replace master cylinder solenoid (See DISASSEMBLY ).