AUTOMATIC TRANSMISSION SYSTEM TERMINALS OF ECM

A01J38DE08

Tech Tips

Each ECM terminal's standard voltage is shown in the table below.

In the 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 "Specific Condition".

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

Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
NSW (E16-8) - E1 (E17-1) L-Y - BR Park/Neutral position switch signal Ignition switch ON and shift lever on P or N Below 2 V
NSW (E16-8) - E1 (E17-1) L-Y - BR Park/Neutral position switch signal Ignition switch ON and shift lever not on P or N 10 to 14 V
STA (E17-11) - E1 (E17-1) B-Y - BR Starter signal Cranking 6 V or more
L (E13-9) - E1 (E17-1) GR-L - BR L shift position switch signal Ignition switch ON and transfer shift lever on L 10 to 14 V
L (E13-9) - E1 (E17-1) GR-L - BR L shift position switch signal Ignition switch ON and transfer shift lever not on L Below 1 V
4 (E13-20) - E1 (E17-1) G-O - BR 4 shift position switch signal Ignition switch ON and transfer shift lever on 4 10 to 14 V
4 (E13-20) - E1 (E17-1) G-O - BR 4 shift position switch signal Ignition switch ON and transfer shift lever not on 4 Below 1 V
3 (E13-19) - E1 (E17-1) L - BR 3 shift position switch signal Ignition switch ON and transfer shift lever on 3 10 to 14 V
3 (E13-19) - E1 (E17-1) L - BR 3 shift position switch signal Ignition switch ON and transfer shift lever not on 3 Below 1 V
2 (E13-10) - E1 (E17-1) G-R - BR 2 shift position switch signal Ignition switch ON and transfer shift lever on 2 and L 10 to 14 V
2 (E13-10) - E1 (E17-1) G-R - BR 2 shift position switch signal Ignition switch ON and transfer shift lever not on 2 and L Below 1 V
D (E13-21) - E1 (E17-1) G-Y - BR D shift position switch signal Ignition switch ON and transfer shift lever on D or 4 10 to 14 V
D (E13-21) - E1 (E17-1) G-Y - BR D shift position switch signal Ignition switch ON and transfer shift lever not on D or 4 Below 1 V
R (E13 -11) - E1 (E17-1) R-Y - BR R shift position switch signal Ignition switch ON and transfer shift lever on R 10 to 14 V
R (E13 -11) - E1 (E17-1) R-Y - BR R shift position switch signal Ignition switch ON and transfer shift lever not on R Below 1 V
STP (E14-15) - E1 (E17-1) G-W - BR Stop light switch signal Brake pedal is depressed 7.5 to 14 V
STP (E14-15) - E1 (E17-1) G-W - BR Stop light switch signal Brake pedal is released Below 1.5 V
S1 (E16-11) - E1 (E17-1) GR - BR S1 solenoid signal 1st or 2nd gear 10 to 14 V
S1 (E16-11) - E1 (E17-1) GR - BR S1 solenoid signal 3rd, 4th or 5th gear Below 1 V
S2 (E16-10) - E1 (E17-1) W-L - BR S2 solenoid signal 2nd or 3rd gear 10 to 14 V
S2 (E16-10) - E1 (E17-1) W-L - BR S2 solenoid signal 1st, 4th or 5th gear Below 1 V
SR (E16-9) - E1 (E17-1) G - BR SR solenoid signal 5th gear 10 to 14 V
SR (E16-9) - E1 (E17-1) G - BR SR solenoid signal 1st gear Below 1 V
SL1+ (E16-19) - SL1- (E16 - 18) G-W - P-L SL1 solenoid signal Engine idle speed

Pulse generation

(see waveform 1)
SL2+ (E16-17) - SL2- (E16-16) G-B - G-R SL2 solenoid signal Engine idle speed

Pulse generation

(see waveform 2)
SLT+ (E16-13) - SLT- (E16-12) G-Y - L-B SLT solenoid signal Engine idle speed

Pulse generation

(see waveform 3)
SLU+ (E16-15) - SLU- (E16-14) L - W SLU solenoid signal 4th (lock-up) or 5th (lock-up) gear

Pulse generation

(see waveform 4)
THO1 (E16-24) - E2 (E15-28) W-R - BR No. 1 ATF temperature sensor signal No. 1 ATF temperature: 115°C (239°F) or more Below 1.5 V
THO2 (E16-32) - E2 (E15-28) B-Y - BR No. 2 ATF temperature sensor signal No. 2 ATF temperature: 115°C (239°F) or more Below 1.5 V
NT+ (E16-35) - NT- (E16-27) L - Y Speed sensor (NT) signal Engine idle speed

Pulse generation

(see waveform 5)
SP2+ (E16-34) - SP2- (E16-26) V - P Speed sensor (SP2) signal Vehicle speed 20 km/h (12 mph)

Pulse generation

(see waveform 6)
L4 (E17-13) - E1 (E17-1) G-W - BR L4 shift position switch signal Ignition switch ON and transfer shift lever on L4 Below 1 V
L4 (E17-13) - E1 (E17-1) G-W - BR L4 shift position switch signal Ignition switch ON and transfer shift lever not on L4 10 to 14 V
TFN (E16-25) - E1 (E17-1) W-G - BR N shift position switch signal Ignition switch ON and transfer shift lever on N Below 1 V
TFN (E16-25) - E1 (E17-1) W-G - BR N shift position switch signal Ignition switch ON and transfer shift lever not on N 10 to 14 V

  1. Waveform 1 (Reference)

    A01J579E03
    Item Content
    Symbols (Terminal No.) SL1+ (E16-19) - SL1- (E16-18)
    Tool Setting 5 V/DIV., 1 msec./DIV.
    Condition Engine idle speed

  2. Waveform 2 (Reference)

    A01J579E03
    Item Content
    Symbols (Terminal No.) SL2+ (E16-17) - SL2- (E16-16)
    Tool Setting 5 V/DIV., 1 msec./DIV.
    Condition Engine idle speed

  3. Waveform 3 (Reference)

    A01J579E03
    Item Content
    Symbols (Terminal No.) SLT+ (E16-13) - SLT- (E16-12)
    Tool Setting 5 V/DIV., 1 msec./DIV.
    Condition Engine idle speed

  4. Waveform 4 (Reference)

    A01J579E03
    Item Content
    Symbols (Terminal No.) SLU+ (E16-15) - SLU- (E16-14)
    Tool Setting 5 V/DIV., 1 msec./DIV.
    Condition 4th (lock-up) or 5th (lock-up) gear

  5. Waveform 5 (Reference)

    A01J4T6E02
    Item Content
    Symbols (Terminal No.) NT+ (E16-35) - NT- (E16-27)
    Tool Setting 1 V/DIV., 2 msec./DIV.
    Condition Engine idle speed

  6. Waveform 6 (Reference)

    A01J77JE03
    Item Content
    Symbols (Terminal No.) SP2+ (E16-34) - SP2- (E16-26)
    Tool Setting 2 V/DIV., 2 msec./DIV.
    Condition Vehicle speed 20 km/h (12 mph)