TCM INSPECTION [JA5A-EL] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed))


BME051718901W01

Terminal Voltage Table (Reference)

Note
• Use the ground of terminal 1C and 1Y of the TCM when measuring terminal voltage, as an error may occur when connecting the negative circuit tester to ground.

Terminal

Signal

Connected to

Test Condition

Voltage (V)

Action

1A
Diagnostic test mode
DLC terminal TAT
Ignition switch ON
Below 10
• Inspect TAT terminal
• Inspect related wiring harness
TAT terminal grounded
0
1B
TFT sensor
(GND)
TFT sensor
Constant
Continuity
• Inspect TFT sensor
• Inspect related wiring harness
1C
GND
GND
Constant
Below 1.0
• Inspect related wiring harness
1D
-
-
-
-
-
1E
HOLD indicator light
HOLD switch
HOLD switch OFF
B+
• Inspect HOLD indicator light
• Inspect related wiring harness
HOLD switch ON
Below 1.0
1F
TFT sensor
TFT sensor
ATF temperature 20 °C {68 °F}
Approx. 1.55
• Inspect TFT sensor
• Inspect related wiring harness
ATF temperature 60 °C {140 °F}
Approx. 0.7
1G
-
-
-
-
-
1H
O/D control
Cruise actuator
Ignition switch at ON position.
B+
• Inspect cruise actuator
• Inspect related wiring harness
1I
-
-
-
-
-
1J
-
-
-
-
-
1K
Intermediate sensor
Intermediate sensor
Vehicle stop
0
• Inspect Intermediate sensor
• Inspect related wiring harness
Vehicle speed at 20 km/h {12.4 mph} or more
Above 1.0
1M
VSS
VSS
Vehicle stop
0
• Inspect VSS
• Inspect related wiring harness
Vehicle speed at 20 km/h {12.4 mph} or more
Above 1.0
1N
Input/turbine speed sensor
Input/turbine speed sensor
Vehicle stop
0
• Inspect Input/turbine speed sensor
• Inspect related wiring harness
Vehicle speed at 20 km/h {12.4 mph} or more
Above 1.0
1P
Back-up power supply
Battery
Constant
B+
• Inspect battery
• Inspect related wiring harness
1Q
Fail-safe
HOLD indicator light
DTC outputted
0-B+
• Inspect related wiring harness
other
0
1S
-
-
-
-
-
1T
TR switch
(N position)
TR switch
N position
B+
• Inspect TR switch
• Inspect related wiring harness
Other positions, all ranges
0
1U
Brake switch
Brake switch
Brake pedal depressed
B+
• Inspect brake switch
• Inspect related wiring harness
Brake pedal released
0
1V
VSS
(GND)
VSS
Constant
Below 1.0
• Inspect related wiring harness
1W
TR switch
(R range)
TR switch
R range
B+
• Inspect TR switch
• Inspect related wiring harness
Other ranges, all positions
0
1X
Intermediate sensor
(GND)
Intermediate sensor
Constant
Below 1.0
• Inspect Intermediate sensor
• Inspect related wiring harness
1Y
GND
GND
Constant
Below 1.0
• Inspect related wiring harness
1Z
TR switch
(D range)
TR switch
D range
B+
• Inspect TR switch
• Inspect related wiring harness
Other ranges, all positions
0
1AA
TR switch
(S range)
TR switch
S range
B+
• Inspect TR switch
• Inspect related wiring harness
Other ranges, all positions
0
2A
-
-
-
-
-
2B
TR switch
(P position)
TR switch
P position
B+
• Inspect TR switch
• Inspect related wiring harness
Other positions, all ranges
0
2C
TR switch
(L range)
TR switch
L range
B+
• Inspect TR switch
• Inspect related wiring harness
Other ranges, all positions
0
2D
Neutral shift solenoid valve
Neutral shift solenoid valve
N position
0
• Inspect neutral shift solenoid valve
• Inspect related wiring harness
R position
B+
2E
-
-
-
-
-
2F
Input/turbine speed sensor
(GND)
Input/turbine speed sensor
Constant
0
• Inspect Input/turbine speed sensor
• Inspect related wiring harness
2G
Reduction timing solenoid valve
Reduction timing solenoid valve
N position
0
• Inspect reduction timing solenoid valve
• Inspect related wiring harness
D range
B+
2H
-
-
-
-
-
2I
HOLD switch
HOLD switch
Switch depressed
0
• Inspect HOLD switch
• Inspect related wiring harness
Switch released
B+
2J
CAN L
PCM
Because this terminal is for serial communication, good/no good judgment by terminal voltage is not possible. Carry out inspection according to DTCs.
-
• Inspect related wiring harness
2K
-
-
-
-
-
2M
CAN H
PCM
Because this terminal is for serial communication, good/no good judgment by terminal voltage is not possible. Carry out inspection according to DTCs.
-
• Inspect related wiring harness
2N
-
-
-
-
-
2P
GND return (solenoid ground)
Solenoid valve
Constant
Continuity
• Inspect related wiring harness
2Q
-
-
-
-
-
2S
TCC solenoid valve control
TCC solenoid valve
D range TCC ON (60 km/h {37 mph} or more)
B+
• Inspect TCC solenoid valve
• Inspect related wiring harness
TCC released (D range HOLD switch ON)
0
2T
Shift solenoid B control
Shift solenoid B
N position
B+
• Inspect shift solenoid B
• Inspect related wiring harness
D range, 4GR gear
0
2U
High clutch solenoid valve
High clutch solenoid valve
N position
0
• Inspect high clutch duty solenoid valve
• Inspect related wiring harness
When shifting 1-2 in D range
B+
2V
2-4 Brake solenoid valve
2-4 Brake duty solenoid valve
N position
B+
• Inspect 2-4 Brake solenoid valve
• Inspect related wiring harness
D position stall
0
2W
Shift solenoid A
Shift solenoid A
N position
B+
• Inspect shift solenoid A
• Inspect related wiring harness
D range, 3GR gear
0
2X
Shift solenoid C control
Shift solenoid C
N position
B+
• Inspect shift solenoid C
• Inspect related wiring harness
D range, HOLD switch OFF
0
2Y
Pressure control solenoid control
Pressure control solenoid
N position
B+
• Inspect pressure control solenoid
• Inspect related wiring harness
D position stall
0
2Z
Power supply
Main relay
Ignition switch ON
B+
• Inspect main relay
• Inspect related wiring harness
Ignition switch OFF
0
2AA
Power supply
Main relay
Ignition switch ON
B+
• Inspect main relay
• Inspect related wiring harness
Ignition switch OFF
0

Inspection Using An Oscilloscope (Reference)

Input/turbine speed sensor signal

• TCM terminal: 1N (+)-2F (-)
• Oscilloscope setting: 1 V/DIV (Y) 1 ms/DIV (X)
• Measuring condition: Turbine speed at 700 rpm, N position

Intermediate sensor signal

• TCM terminal: 1K (+)-1X (-)
• Oscilloscope setting: 4 V/DIV (Y) 0.2 ms/DIV (X)
• Measuring condition: Vehicle speed at 40 km/h {25 mph}, 4GR

Vehicle speedometer sensor signal

• TCM terminal: 1M (+)-1V (-)
• Oscilloscope setting: 4 V/DIV (Y) 1 ms/DIV (X)
• Measuring condition: Vehicle speed at 40 km/h {25 mph}

Pressure control solenoid signal

• TCM terminal: 2Y (+)-2P (-)
• Oscilloscope setting: 5 V/DIV (Y) 5 ms/DIV (X)
• Measuring condition: Idle after warm-up

2-4 brake solenoid valve signal

• TCM terminal: 2V (+)-2P (-)
• Oscilloscope setting: 5 V/DIV (Y) 5 ms/DIV (X)
• Measuring condition: Idle after warm-up

High clutch solenoid valve signal

• TCM terminal: 2U (+)-2P (-)
• Oscilloscope setting: 5 V/DIV (Y) 5 ms/DIV (X)
• Measuring condition: Idle after warm-up

TCC solenoid valve signal (lock up off)

• TCM terminal: 2S (+)-2P (-)
• Oscilloscope setting: 5 V/DIV (Y) 5 ms/DIV (X)
• Measuring condition: Idle after warm-up

TCC solenoid valve signal (lock up on)

• TCM terminal: 2S (+)-2P (-)
• Oscilloscope setting: 5 V/DIV (Y) 5 ms/DIV (X)
• Measuring condition: Drive the vehicle with lock up