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Terminals Of ECM

  1. ECM 
Fig 1: Identifying ECM Connector Terminal
G06044368Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 "Specified Condition".

Use the illustration above as a reference for the ECM terminals.

TERMINAL REFERENCE CHART

Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
A37-36 (STP) - B29-104 (E1) L - BR Stop light switch signal Brake pedal is depressed 7.5 to 14 V
Brake pedal is released Below 1.5 V
B29-52 (STAR) - B29-104 (E1) W - BR 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
B29-73 (P) - B29-104 (E1) V - BR 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
B29-53 (R) - B29-104 (E1) R - BR 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
B29-54 (N) - B29-104 (E1) B - BR 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
B29-56 (D) - B29-104 (E1) P - BR 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
A37-26 (3) - B29-104 (E1) W - BR 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
B29-55 (2) - B29-104 (E1) BR - BR 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
B29-74 (L) - B29-104 (E1) GR - BR L shift position switch signal Ignition switch ON and shift lever L position 11 to 14V
Ignition switch ON and shift lever except L position Below 1 V
B29-79 (S1) - B29-104 (E1) G - BR 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
B29-78 (S2) - B29-104 (E1) P-G - BR S2 solenoid signal Ignition switch ON 11 to 14 V
1st or 4th gear 11 to 14V
2nd or 3rd gear Below 1 V
B29-57 (SLU+) - B29-77 (SLU-) W - L SLU solenoid signal Ignition switch ON Below 1 V
B29-80 (ST) - B29-104 (E1) GR - BR ST solenoid signal Ignition switch ON Below 1 V
Ignition switch ON and R gear 11 to 14 V
B29-40 (SLT+) - B29-39 (SLT-) LG - V SLT solenoid signal Ignition switch ON Pulse generation (See  awaveform 1)
B29-125 (NT+) - B29-124 (NT-) B - Y Speed sensor (NT) signal Engine is running Pulse generation (See  bwaveform 2)
B29-72 (THO1) - B29-95 (ETHO) Y - P ATF temperature sensor signal ATF temperature: 115°C (239°F) or more Below 1.5 V
  1. Waveform 1

    Reference: 

    TERMINAL REFERENCE

    Terminal SLT+ - SLT-
    Tool setting 5 V/DIV, 1 ms/DIV
    Vehicle condition Engine idle speed
    Fig 2: Identifying Waveform 1
    G04975834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Waveform 2

    Reference: 

    TERMINAL REFERENCE

    Terminal NT+ - NT-
    Tool setting 5 V/DIV, 0.5 ms/DIV
    Vehicle condition Vehicle speed 20 km/h (12 mph)
    Fig 3: Identifying Waveform 2
    G04975838Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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