AUTOMATIC TRANSAXLE SYSTEM TERMINALS OF ECM


  1. ECM

    B004MNKN20

    Tech Tips

    The standard voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard voltage for that pair of terminals shown in the "Specified Condition" column. The illustration above can be used as a reference to identify the ECM terminal locations.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A22-1 (BATT) - C58-59 (E1) R - W-B Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
    A22-9 (STP) - C58-59 (E1) SB - W-B Stop light switch assembly signal Brake pedal depressed 7.5 to 14 V
    Brake pedal released Below 1.5 V
    A22-23 (NSW) - C58-59 (E1) BE - W-B Park/neutral position switch assembly signal Ignition switch ON and shift lever in P or N Below 2 V
    Ignition switch ON and shift lever not in P or N 11 to 14 V
    A22-29 (STA) - C58-59 (E1) G - W-B Starter assembly signal Cranking 5.5 V or higher
    A22-42 (SFTU) - C58-59 (E1) G - W-B Up-shift switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever held in "+" (Up shift) Below 1 V
    A22-42 (SFTU) - A22-35 (ECCS)* G - BE Up-shift switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and "+" (Up shift) shift paddle switch operated Below 1 V
    A22-43 (SFTD) - C58-59 (E1) W - W-B Down-shift switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever held in "-" (Down shift) Below 1 V
    A22-43 (SFTD) - A22-35 (ECCS)* W - BE Down-shift switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and "-" (Down shift) shift paddle switch operated Below 1 V
    A22-56 (SPCN) - C58-59 (E1) V - W-B Combination switch (NORMAL) signal Ignition switch ON and combination switch (NORMAL) being pushed and held Below 1.5 V
    Ignition switch ON and combination switch (NORMAL) not pushed 11 to 14 V
    A22-57 (PWMS) - C58-59 (E1) LG - W-B Combination switch (SPORT) signal Ignition switch ON and combination switch (SPORT) being pushed and held Below 1.5 V
    Ignition switch ON and combination switch (SPORT) not pushed 11 to 14 V
    A22-59 (S) - C58-59 (E1) GR - W-B S shift position switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever not in S Below 1 V
    C58-5 (SL4+) - C58-4 (SL4-) W - B Solenoid (SL4) valve signal 3rd or 5th gear Pulse generation
    C58-7 (SL3+) - C58-6 (SL3-) G - R Solenoid (SL3) valve signal 2nd or 6th gear Pulse generation
    C58-9 (SL2+) - C58-8 (SL2-) V - P Solenoid (SL2) valve signal 4th, 5th or 6th gear Pulse generation
    C58-11 (SL1+) - C58-10 (SL1-) LG - L Solenoid (SL1) valve signal 1st, 2nd, 3rd or 4th gear Pulse generation
    C58-13 (SLU+) - C58-12 (SLU-) W - B Solenoid (SLU) valve signal

    All gears

    (Lock-up on / Flex lock-up on)

    		 Pulse generation
    C58-15 (SLT+) - C58-14 (SLT-) GR - BR Solenoid (SLT) valve signal Engine idling Pulse generation
    C58-39 (N) - C58-59 (E1) LG - W-B 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
    C58-40 (SL) - C58-59 (E1) R - W-B Solenoid (SL) valve signal

    All gears

    (Lock-up on / Flex lock-up on)

    		 11 to 14 V
    C58-59 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω
    C58-65 (R) - C58-59 (E1) W - W-B 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
    C58-66 (D) - C58-59 (E1) R - W-B D shift position switch signal Ignition switch ON and shift lever in D or S 11 to 14 V
    Ignition switch ON and shift lever not in D or S Below 1 V
    C58-70 (P) - C58-59 (E1) B - W-B 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
    C58-74 (NCO) - C58-59 (E1) V - W-B Output speed sensor NC signal Vehicle driving Pulse generation
    C58-75 (NCB) - C58-59 (E1) R - W-B Power source for sensor (fixed voltage) Ignition switch ON 11 to 14 V
    C58-125 (NTO) - C58-59 (E1) G - W-B Input speed sensor NT signal Engine idle speed Pulse generation
    C58-126 (NTB) - C58-59 (E1) R - W-B Power source for sensor (fixed voltage) Ignition switch ON 11 to 14 V
    C58-127 (THO1) - C58-128 (ETHO) LG - L ATF temperature sensor signal ATF temperature: 115°C (239°F) or more Below 1.5 V

    *: w/ Shift Paddle Switch