Automatic Transaxle System (For Sedan) Terminals Of Ecm

Drivetrain. Yaris. Ncp93, 131
U340E Automatic Transmission Transaxle. Yaris. Ncp93, 131

  1. ECM

Automatic Transaxle System (For Sedan) -- Terminals Of Ecm



ECM

Yaris. Ncp93, 131.U340E Automatic Transmission Transaxle.Automatic Transaxle System (For Sedan).Automatic Transaxle System (For Sedan) Terminals Of Ecm

HINT:
Each ECM terminal's standard voltage is shown in the table below.
In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specific Condition".
Use the illustration above as a reference for the ECM terminals.

Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
A21-8 (SPD) - C20-104 (E1)
V - W
Speed signal
Ignition switch ON and driving wheel rotating slowly
Pulse generation
(See waveform 1)
A21-26 (ODMS) - C20-104 (E1)
BE - W
3 shift position switch signal
Ignition switch ON and shift lever in 3
11 to 14 V
Ignition switch ON and shift lever in other than 3
Below 1 V
A21-36 (STP) - C20-104 (E1)
G - W
Stop light switch signal
Brake pedal depressed
7.5 to 14 V
Brake pedal released
Below 1.5 V
C20-52 (STAR) - C20-104 (E1)
BE - W
Park/Neutral position switch signal
Ignition switch ON and shift lever in P or N
Below 2 V
Ignition switch ON and shift lever not in P and N
11 to 14 V
C20-53 (R) - C20-104 (E1)
R - W
R shift position switch signal
Ignition switch ON and shift lever in R
11 to 14 V
Ignition switch ON and shift lever not in R
Below 1 V
C20-54 (N) - C20-104 (E1)
SB - W
N shift position switch signal
Ignition switch ON and shift lever in N
11 to 14 V
Ignition switch ON and shift lever not in N
Below 1 V
C20-55 (2) - C20-104 (E1)
G - W
2 shift position switch signal
Ignition switch ON and shift lever in 2
11 to 14 V
Ignition switch ON and shift lever not in 2
Below 1 V
C20-56 (D) - C20-104 (E1)
L - W
D shift position switch signal
Ignition switch ON and shift lever in D or 3
11 to 14 V
Ignition switch ON and shift lever not in D and 3
Below 1 V
C20-57 (SLU+) - C20-77 (SLU-)
P - BE
SLU solenoid signal
Engine idling speed
Pulse generation
(See waveform 2)
C20-72 (THO1) - C20-95 (ETHO)
Y - B
ATF (Automatic Transmission Fluid) temperature sensor signal
ATF temperature: 10°C
(50°F) to 145°C (293°F)
4 to 0 V
C20-73 (P) - C20-104 (E1)
R - W
P shift position switch signal
Ignition switch ON and shift lever in P
11 to 14 V
Ignition switch ON and shift lever not in P
Below 1 V
C20-74 (L) - C20-104 (E1)
V - W
L shift position switch signal
Ignition switch ON and shift lever in L
11 to 14 V
Ignition switch ON and shift lever not in L
Below 1 V
C20-76 (SLT+) - C20-75 (SLT-)
G - W
SLT solenoid signal
Engine idling speed
Pulse generation
C20-78 (S2) - C20-104 (E1)
L - W
S2 solenoid signal
Ignition switch ON
Below 1 V
1st or 4th gear
11 to 14 V
2nd or 3rd gear
Below 1 V
C20-79 (S1) - C20-104 (E1)
SB - W
S1 solenoid signal
Ignition switch ON
11 to 14 V
1st or 2nd gear
11 to 14 V
3rd or 4th gear
Below 1 V
C20-80 (ST) - C20-104 (E1)
GR - W
ST solenoid signal
D position (3rd gear ←→ 4th gear)
Below 1 V ←→ 11 to 14 V
C20-125 (NT+) - C20-124 (NT-)
B - G
Speed sensor (NT) signal
Engine running
Pulse generation
(See waveform 3)


    Yaris. Ncp93, 131.U340E Automatic Transmission Transaxle.Automatic Transaxle System (For Sedan).Automatic Transaxle System (For Sedan) Terminals Of Ecm

  1. Waveform 1

    Terminal
    		SPD - E1
    Tool setting
    		2 V/DIV, 20 ms/DIV
    Vehicle conditions
    		Driving at approximately 20 km/h (12 mph)


    2. Yaris. Ncp93, 131.U340E Automatic Transmission Transaxle.Automatic Transaxle System (For Sedan).Automatic Transaxle System (For Sedan) Terminals Of Ecm

  2. Waveform 2

    Terminal
    		SLU+ - SLU-
    Tool setting
    		5 V/DIV, 1 ms/DIV
    Vehicle conditions
    		Engine idling speed


    3. Yaris. Ncp93, 131.U340E Automatic Transmission Transaxle.Automatic Transaxle System (For Sedan).Automatic Transaxle System (For Sedan) Terminals Of Ecm

  3. Waveform 3

    Terminal
    		NT+ - NT-
    Tool setting
    		2 V/DIV, 1 ms/DIV
    Vehicle conditions
    		Driving at approximately 20 km/h (12 mph)