Toyota ZZT230 series Repair Manual page 408

DTC
CIRCUIT DESCRIPTION
and the
This sensor detects the rotation speed of the counter gear. By comparing the counter gear speed signal (NC)
input turbine speed sensor signal {NT), the ECM detects the shift timing of the gears and appropriate­
ly controls the engine torque and hydraulic pressure in response to various conditions, thus performing
smooth gear shifting.
DTCNo.
TheECM
sees Q( more.
(1-trip detection logic)
(b)
(a) IGSW:ON
P1730
(c)
WIRING DIAGRAM
)
c
)
DIAGNOSnCS
P1730
NC Revolution Sensor Circuit Malfunction
(Counter Gear Speed Sensor)
OTC Detecting Condition
detects
conditions (a), (b), (c)
n put
rpm: 300
Except P, N
position switch:
Park/neutral
shaft
rpm or less
TIM i
outpul
shaft
TIM rpm: 1 ,000 rpm or more
01
Counter Gear
Speed Sensor
-
AUTOMATIC TRANSAXLE (U240El
and {d)
continuity for 5
pen
O or short in
•
NC
revolution speed sensor
•
•ECM
position
Trouble Area
NC
revolution sensor circuit
ECM
NC•
Nc-
Dl-197
007935