D00010
Rotor
No. 2 Vehicle Speed Sensor
Rotor
No. 2 Vehicle Speed Sensor
ECM
AT8761
5 V/div.
0 V
2 msec./div.
–
DIAGNOSTICS
AUTOMATIC TRANSMISSION (A340E, A340F)
DI–489
751
Author:
Date:
2003 TOYOTA TACOMA (RM1002U)
DTC
P0722
Output Speed Sensor
CIRCUIT DESCRIPTION
The No. 2 vehicle speed sensor detects the rotation speed of the transmission output shaft and sends sig-
nals to the ECM. The ECM determines the vehicle speed, based on these signals. An AC voltage is gener-
ated in the No. 2 vehicle speed sensor coil as the rotor mounted on the output shaft rotates, and this voltage
is sent to the ECM. 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. If the No. 2 vehicle speed sensor malfunc-
tions, the ECM uses input signals from the No. 1 vehicle speed sensor as a back–up signal.
DTC No.
DTC Detection Condition
Trouble Area
P0722
All conditions below are detected 500 times or more continu-
ously (2–trip detection logic)
(a) No signal is input to ECM from No. 2 vehicle speed sensor
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 4 sec.
(c) Park/neutral position switch is OFF.
(d) Transfer position is except neutral (4WD).
Open or short in No. 2 vehicle speed sensor circuit
No. 2 vehicle speed sensor
ECM
HINT:
The waveform between terminals SP2+ and SP2– when vehicle
speed is approx. 60 km/h (37 mph) is shown on the left.
DIB1G–01
D13078
Y–R
V1
V1
Vehicle
Speed Sensor
W–R
ECM
14
E6
E6
23
SP2+
SP2–
1
2
3RZ–FE
Y–R
W–R
IK2
IK2
17
18
D04300
Y–R
V1
V1
Vehicle
Speed Sensor
W–R
ECM
23
E7
E7
22
SP2+
SP2–
1
2
5VZ–FE;
DI–490
–
DIAGNOSTICS
AUTOMATIC TRANSMISSION (A340E, A340F)
752
Author:
Date:
2003 TOYOTA TACOMA (RM1002U)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
When using the hand–held tester, start the inspection from step 1. When not using the hand–held tester,
start from step 2.
Q08218
Q08292
D00012
A340E
A340F
Magnet
Magnet
–
DIAGNOSTICS
A