Automatic Transaxle System Terminals Of Ecm

Drivetrain. Corolla. Zre142 Aze141
U341E Automatic Transmission Transaxle. Corolla. Zre142 Aze141

  1. ECM

Automatic Transaxle System -- Terminals Of Ecm



ECM

Corolla. Zre142 Aze141.U341E Automatic Transmission Transaxle.Automatic Transaxle System.Automatic Transaxle System 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. (Symbols)" for the terminals to 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. (Symbols)
Terminal Description
Condition
Specified Condition
A50-36 (STP) - B31-105 (E1)
Stop light switch signal
Brake pedal is depressed
7.5 to 14 V
Brake pedal is released
Below 1.5 V
A50-25 (STAR) - B31-105 (E1)
Park neutral switch signal
Ignition switch ON and shift lever P and N position
Below 2 V
Ignition switch ON and shift lever except P and N position
11 to 14 V
B31-77 (P) - B31-105 (E1)
Park position switch signal
Ignition switch ON and shift lever P position
11 to 14 V
Ignition switch ON and shift lever except P position
Below 1 V
B31-76 (R) - B31-105 (E1)
R shift position switch signal
Ignition switch ON and shift lever R position
11 to 14 V
Ignition switch ON and shift lever except R position
Below 1 V
B31-99 (N) - B31-105 (E1)
Neutral position switch signal
Ignition switch ON and shift lever N position
11 to 14 V
Ignition switch ON and shift lever except N position
Below 1 V
A50-47 (D) - B31-105 (E1)
D shift position switch signal
Ignition switch ON and shift lever D and 3 position
11 to 14 V
Ignition switch ON and shift lever except D and 3 position
Below 1 V
B31-124 (3) - B31-105 (E1)
3 shift position switch signal
Ignition switch ON and shift lever 3 position
11 to 14 V
Ignition switch ON and shift lever except 3 position
Below 1 V
B31-39 (2) - B31-105 (E1)
2 shift position switch signal
Ignition switch ON and shift lever 2 position
11 to 14 V
Ignition switch ON and shift lever except 2 position
Below 1 V
A50-26 (L) - B31-105 (E1)
L shift position switch signal
Ignition switch ON and shift lever L position
11 to 14 V
Ignition switch ON and shift lever except L position
Below 1 V
B31-56 (S1) - B31-105 (E1)
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
B31-55 (S2) - B31-105 (E1)
S2 solenoid signal
Ignition switch ON
11 to 14 V
1st or 4th gear
11 to 14 V
2nd or 3rd gear
Below 1 V
B31-54 (SLU+) - B31-53 (SLU-)
SLU solenoid signal
Ignition switch ON
Below 1 V
B31-59 (ST) - B31-105 (E1)
ST solenoid signal
Ignition switch ON
Below 1 V
Ignition switch ON and R gear
11 to 14 V
B31-61 (SLT+) - B31-60 (SLT-)
SLT solenoid signal
Engine idle speed
Pulse generation
(See waveform 1)
B31-122 (NT+) - B31-100 (NT-)
Speed sensor (NT) signal
Vehicle speed 20 km/h (12 mph)
Pulse generation
(See waveform 2)
B31-70 (THO1) - B31-71 (ETHO)
ATF temperature sensor signal
ATF temperature: 115°C (239°F) or more
Below 1.5 V


    Corolla. Zre142 Aze141.U341E Automatic Transmission Transaxle.Automatic Transaxle System.Automatic Transaxle System Terminals Of Ecm

  1. Waveform 1

    Reference:
    Terminal
    		SLT+ - SLT-
    Tool setting
    		5 V/DIV, 1ms/DIV
    Vehicle condition
    		Engine idle speed


    2. Corolla. Zre142 Aze141.U341E Automatic Transmission Transaxle.Automatic Transaxle System.Automatic Transaxle System Terminals Of Ecm

  2. Waveform 2

    Reference:
    Terminal
    		NT+ - NT-
    Tool setting
    		5 V/DIV, 0.5ms/DIV
    Vehicle condition
    		Vehicle speed 20 km/h (12 mph)