Automatic transmission-46
Pin
No. Type 2W D Description
A24 CAN (-ve) I/O ○ CAN hidden communication end
A23 CAN (+ve) I/O ○ CAN exposed communication end
A22 K line communication
connection I/O ● Diagnosis information and car code
A21 Nonuse ―― ○ －－－－－
A20 Nonuse ―― ○ －－－－－
A19 Shaft speed sensor
signal IP ○ The sensor sends the shaft speed signal to T CU
A18 Nonuse ―― ○ －－－－－
A17 Nonuse ―― ○ －－－－－
A16 Nonuse ―― ○ －－－－－
A15 Nonuse ―― ○ －－－－－
B6 Gear-position IP ● T h e sw itch ha s th e variab le-vo ltage ; in dicate the
gear-position steering colum n selected (PRND321). The
vo ltage is variab le in the ran ge o f 0 V --5 V .
B5 transm ission fluid
temperature IP ● The sensor indicates the transmission fluid temperature.
High R=Low temperature
Low R= High temperature
The voltage is variable in the range of 0V to 5V
B 4 so leno id va lve 4 O P ● N /O FF no rm al-op ened so leno id valve , co m b ined w ith the
O N /O FF w itch o f so len oid valve 3; en sure the sh ifting
quality and sequence
B 3 so leno id va lve 1 O P ● ON/OFF normal-opened solenoid valve; combined with
o the r so leno id va lve; u sed to determ ine the selected
gear-position.
B2 Nonuse ―― ○ －－－－－
B1 R e tu rn so len oid va lve
5 IP ● Using for grounding of VPS and current of circuit can be
detected, then process the feedback control for the VPS.
B14 Gear-position －
grounding GND ● PRND321 Gear-position switch grounding
B13 transm ission fluid
temperature －
grounding GND ● Connected to grounding pin of temperature sensor.
B12 solenoid valve 6 OP ● ON/OFF normal-opened solenoid valve, determine the
high or low of line pressure
B11 solenoid valve 2 OP ● O N /O FF norm al-o pened so leno id va lve, co m bined w ith
o the r so leno id valves; u sed to d eterm ine the selected
gear-position.
B10 solenoid valve 3 OP ● O N /O FF norm al-o pened so leno id va lve, co m bined w ith
the O N /O FF sw itch of solenoid valve 4; ensure the
shifting quality and sequence
B 9 so leno id va lve 7 O P ● ON/OFF normal-opened solenoid valve, hydraulic torque
converter locking; increase the efficiency of medium
speed run.
B8 Nonuse ―― ○ －－－－－
B 7 so leno id va lve 5 (+ ve) O P ● It is the so leno id va lve w hich can ch an ge th e p ressu re
d urin g the sh iftin g a nd on /o ff o f so leno id valve .
●= connected line ○= unconnected line ＊=only
OP= output IP=input I/O=input/output
GND=grounding REF=reference PWR=power
Table 6.1.1 Description of TCU pin
