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Terminals Of ECM

Fig 1: Identifying Terminals Of ECM Connector
G05109984Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

The standard voltage of each ECM terminal is shown in TERMINAL DESCRIPTION SPECIFIED CONDITION TABLE .

First follow the information under "Condition".

Look under "Symbols (Terminal No.)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition".

Use Fig 1 above as a reference for the ECM terminals.

Standard voltage 

TERMINAL DESCRIPTION SPECIFIED CONDITION TABLE

Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
STP (E47-15) - E1 (B3-1) G-Y - BR Stop light switch signal Brake pedal is depressed 7.5 to 14 V
Brake pedal is released Below 1.5 V
L (E46-9) - E1 (B3-1) B-L - BR L shift position switch signal Ignition switch ON and shift lever L position 11 to 14 V
Ignition switch ON and shift lever other than L position Below 1 V
2 (E46-10) - E1 (B3-1) G-R - BR 2 shift position switch signal Ignition switch ON and shift lever 2 or L positions 11 to 14 V
Ignition switch ON and shift lever other than 2 and L positions Below 1 V
R (E46-11) - E1 (B3-1) R-Y - BR R shift position switch signal Ignition switch ON and shift lever R position 11 to 14V
Ignition switch ON and shift lever other than R position Below 1 V
3 (E46-19) - E1 (B3-1) W-R - BR 3 shift position switch signal Ignition switch ON and shift lever 3 position 11 to 14 V
Ignition switch ON and shift lever other than 3 position Below 1V
4 (E46-20) - E1 (B3-1) B-O-BR 4 shift position switch signal Ignition switch ON and shift lever 4 position 11 to 14 V
Ignition switch ON and shift lever other than 4 position Below 1 V
D (E46-21) - E1 (B3-1) V-BR D shift position switch signal Ignition switch ON and shift lever D or 4 positions 11 to 14 V
Ignition switch ON and shift lever other than D and 4 positions Below 1 V
L4 (B3-13) - E1 (B3-1) W-L-BR Transfer L4 shift position switch signal Ignition switch ON and transfer high and low shift lever L position Below 1 V
Ignition switch ON and transfer high and low shift lever other than L position 11 to 14 V
TFN (B2-25) - E1 (B3-1) W-BR N shift position switch signal Ignition switch ON and transfer high and low shift lever N position Below 1 V
Ignition switch ON and transfer high and low shift lever other than N position 11 to 14 V
NSW (B2-8) - E1 (B3-1) L-Y-BR Park or neutral shift position switch signal Ignition switch ON and shift lever P or N positions Below 2 V
Ignition switch ON and shift lever other than P and N positions 11 to 14 V
SR (B2-9) - E1 (B3-1) P-L - BR SR solenoid signal 5th gear 11 to 14 V
1st gear Below 1V
S2 (B2-10) - E1 (B3-1) W-L-BR S2 solenoid signal 2nd or 3rd gear 11 to 14 V
1st, 4th or 5th gear Below 1V
S1 (B2-11) - E1 (B3-1) GR - BR S1 solenoid signal 1st or 2nd gear 11 to 14 V
3rd, 4th or 5th gear Below 1 V
SLT+ (B2-13) - SLT- (B2-12) LG-B - L-R SLT solenoid signal Engine is Idling Pulse generation (See WAVEFORM 1 )
SLU+ (B2-15) - SLU- (B2-14) R-B - R-W SLU solenoid signal 5th (lock-up) gear Pulse generation (See WAVEFORM 2 )
SL2+ (B2-17) - SL2- (B2-16) B-W-B-R SL2 solenoid signal Engine idling speed Pulse generation (See WAVEFORM 3 )
SL1+ (B2-19) - SL1- (B2-18) G-B - B-Y SL1 solenoid signal Engine idling speed Pulse generation (See WAVEFORM 4 )
THO2 (B2-32) - E2 (B1-28) L-W-G No. 2 ATF temperature sensor signal ATF temperature: 115°C (239°F) or more Below 1.5 V
THO1 (B2-24) - E2 (B1-28) Y-G-W-G No. 1 ATF temperature sensor signal ATF temperature: 115°C (239°F) or more Below 1.5 V
SP2+ (B2-34) - SP2- (B2-26) Y-L Speed sensor (SP2) signal Vehicle speed 12 mph (20 km/h) Pulse generation (See WAVEFORM 5 )
NT+ (B2-35) - NT- (B2-27) P-V Speed sensor (NT) signal Engine is Idling Pulse generation (See WAVEFORM 6 )
  1. Waveform 1 
    WAVEFORM REFERENCE

    Item Condition
    Terminal SLT+ - SLT-
    Tool setting 5 V/DIV, 1 ms/DIV
    Vehicle condition Engine idling speed
    Fig 2: Identifying Waveform 1
    G05190690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Waveform 2 
    WAVEFORM REFERENCE

    Item Condition
    Terminal SLU+ - SLU-
    Tool setting 5 V/DIV, 1 ms/DIV
    Vehicle condition 5th (lock-up) gear
    Fig 3: Identifying Waveform 2
    G05190689Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Waveform 3 
    WAVEFORM REFERENCE

    Item Condition
    Terminal SL2+ - SL2-
    Tool setting 5 V/DIV, 1 ms/DIV
    Vehicle condition Engine idling speed
    Fig 4: Identifying Waveform 3
    G05190690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Waveform 4 
    WAVEFORM REFERENCE

    Item Condition
    Terminal SL1+ - SL1-
    Tool setting 5 V/DIV, 1 ms/DIV
    Vehicle condition Engine idling speed
    Fig 5: Identifying Waveform 4
    G05190690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Waveform 5 
    WAVEFORM REFERENCE

    Item Condition
    Terminal SP2+ - SP2-
    Tool setting 2 V/DIV, 2 ms/DIV
    Vehicle condition Vehicle speed 12 mph (20 km/h)
    Fig 6: Identifying Waveform 5
    G05110014Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. Waveform 6 
    WAVEFORM REFERENCE

    Item Condition
    Terminal NT+ - NT-
    Tool setting 2 V/DIV, 2 ms/DIV
    Vehicle condition Engine idling speed
    Fig 7: Identifying Waveform 6
    G05109990Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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