Toyota Tundra. Manual — part 2807

B: REPLACE ECM

C: REPLACE ECM

Fig. 39: Identifying D74 ECM Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE ECM (See ECM )

DTC P0722: OUTPUT SPEED SENSOR CIRCUIT NO SIGNAL

DESCRIPTION

The speed sensor SP2 detects the rotation speed of the transmission output shaft and sends signals to the ECM.
The ECM determines the vehicle speed based on these signals. An AC voltage is generated in the speed sensor
SP2 coil as the parking gear mounted on the rear planetary gear assembly rotates, and this voltage is sent to the
ECM. The parking gear on the rear planetary gear is used as the timing rotor for this sensor.

The gear shift point and lock-up timing are controlled by the ECM based on the signals from this vehicle speed
sensor and the throttle position sensor signal.

Result

Proceed To

NG

A

OK (for 3UR-FE)

B

OK (for 3UR0FBE)

C

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra

Fig. 40: Identifying Output Speed Sensor, Parking Gear & Clutch Drum
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

DTC DETECTION CONDITION TABLE

Reference: Inspect using an oscilloscope.

Check the waveform of the ECM connector.

Standard

WAVEFORM REFERENCE TABLE

DTC

Code

DTC Detection Condition

Trouble Area

P0722

All conditions below are detected 500 times or more
continuously (2-trip detection logic)

a. No signal from speed sensor SP2 is input to ECM

while 4 pulses of No. 1 vehicle speed sensor signal are
sent

b. Vehicle speed is 9 km/h (6 MPH) or more for at least

5 sec.

c. Park/neutral position switch is OFF

d. Transfer position is in any position except neutral



Open or short in speed
sensor SP2 circuit



Speed sensor SP2



ECM



Automatic transmission
(clutch, brake, gear, etc.)

Terminal No. (Symbol)

Tool Setting

Condition

Specified

Condition

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra

Fig. 41: Identifying Waveform
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

MONITOR DESCRIPTION

The output speed sensor SP2 monitors the output shaft speed. The ECM controls the gear shift point and the
lock-up timing based on the signals from the output speed sensor SP2 and throttle position sensor. If the ECM
detects no signal from the output shaft speed sensor SP2 even while the vehicle is moving, it will conclude that
there is a malfunction of the output speed sensor SP2. The ECM will illuminate the MIL and set a DTC.

MONITOR STRATEGY

MONITOR STRATEGY TABLE

TYPICAL ENABLING CONDITIONS

TYPICAL ENABLING CONDITIONS TABLE

TYPICAL MALFUNCTION THRESHOLDS

D74-101 (SP2+) - D74-100
(SP2-)

2 V/DIV., 20

msec./DIV

Vehicle speed 20 km/h (12
MPH)

Refer to Fig. 41

Related DTCs

P0722: Speed sensor SP2/Verify pulse input

Required Sensors/Components

Speed sensor SP2

Frequency of operation

Continuous

Duration

5 sec.

MIL operation

2 driving cycles

Sequence of operation

None

The monitor will run whenever the following DTCs
are not stored

P0500 (VSS)

P0748 (Trans solenoid (range))

Transfer neutral switch

Not neutral

Vehicle speed at vehicle speed sensor

9 km/h (5.59 MPH) or more

Battery voltage

8 V or higher

Ignition switch

ON

Starter

OFF

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra

TYPICAL MALFUNCTION THRESHOLDS TABLE

COMPONENT OPERATING RANGE

COMPONENT OPERATING RANGE TABLE

WIRING DIAGRAM

Fig. 42: Identifying Speed Sensor Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. DATA LIST

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and
other items to be read without removing any parts. This non-intrusive inspection can be very useful
because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading
the Data List information early in troubleshooting is one way to save diagnostic time.

a. Warm up the engine.

b. Turn the ignition switch off.

c. Connect the Techstream to the DLC3.

Speed sensor signal

No signal

Vehicle speed at output speed sensor

9 km/h (5.59 MPH) or more

NOTE:

In the table below, the values listed under "Normal Condition" are
reference values. Do not depend solely on these reference values when
deciding whether a part is faulty or not.

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra