AUTOMATIC TRANSAXLE SYSTEM TERMINALS OF ECU


  1. ECM

    A01VTQAN13

    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.

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

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    D1-1 (SLT+) - D1-31 (SLT-) R - V Solenoid (SLT) valve signal Engine idling Pulse generation
    D1-3 (SLU+) - D1-2 (SLU-) W - B Solenoid (SLU) valve signal

    2nd, 3rd, 4th, 5th or 6th gear

    (Flex lock-up on)

    		 Pulse generation
    D1-5 (SL2+) - D1-4 (SL2-) BR - L Solenoid (SL2) valve signal 4th, 5th or 6th gear Pulse generation
    D1-7 (SL3+) - D1-6 (SL3-) G - R Solenoid (SL3) valve signal 2nd or 6th gear Pulse generation
    D1-13 (SL4+) - D1-12 (SL4-) W - B Solenoid (SL4) valve signal 3rd or 5th gear Pulse generation
    D1-15 (SL1+) - D1-14 (SL1-) P - LG Solenoid (SL1) valve signal 1st, 2nd, 3rd or 4th gear Pulse generation
    D1-34 (D) - D1-53 (E1) B - W-B D shift position switch signal Engine switch on (IG) and shift lever in D, M, "+" or "-" 11 to 14 V
    Engine switch on (IG) and shift lever not in D, M, "+" or "-" Below 1 V
    D1-35 (R) - D1-53 (E1) GR - W-B R shift position switch signal Engine switch on (IG) and shift lever in R 11 to 14 V
    Engine switch on (IG) and shift lever not in R Below 1 V
    D1-64 (P) - D1-53 (E1) V - W-B P shift position switch signal Engine switch on (IG) and shift lever in P 11 to 14 V
    Engine switch on (IG) and shift lever not in P Below 1 V
    D1-65 (N) - D1-53 (E1) BR - W-B N shift position switch signal Engine switch on (IG) and shift lever in N 11 to 14 V
    Engine switch on (IG) and shift lever not in N Below 1 V
    D1-71 (NTB) - D1-53 (E1) R - W-B Power source for sensor (fixed voltage) Engine switch on (IG) 11 to 14 V
    D1-72 (NTO) - D1-53 (E1) G - W-B Input speed sensor NT signal Engine idling Pulse generation
    D1-73 (NCB) - D1-53 (E1) L - W-B Power source for sensor (fixed voltage) Engine switch on (IG) 11 to 14 V
    D1-74 (NCO) - D1-53 (E1) W - W-B Output speed sensor NC signal Vehicle being driving Pulse generation
    D1-75 (SL) - D1-53 (E1) R - W-B Solenoid (SL) valve signal All gears 11 to 14 V
    D1-84 (THO1) - D1-83 (ETHO) L - G ATF temperature sensor signal ATF temperature: 115°C (239°F) or higher Below 1.5 V
    D1-85 (TPS3) - D1-53 (E1) GR - W-B No. 3 ATF pressure switch signal Lock-up operating Below 1 V
    Lock-up not operating 11 to 14 V
    A46-1 (BATT) - D1-53 (E1) G - W-B Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
    A46-9 (STP) - D1-53 (E1) B - W-B Stop light switch assembly signal Brake pedal depressed 7.5 to 14 V
    Brake pedal released 0 to 1.5 V
    A46-29 (STA) - D1-53 (E1) B - W-B Starter assembly signal Cranking 6 V or higher
    A46-36 (PWMS) - D1-53 (E1) GR - W-B Pattern select switch (SPORT) signal Engine switch on (IG) and pattern select switch being turned and held at SPORT position Below 1.5 V
    Engine switch on (IG) and pattern select switch not pushed 11 to 14 V
    A46-39 (SPCN) - D1-53 (E1) BR - W-B Pattern select switch (NORMAL) signal Engine switch on (IG) and pattern select switch being pushed and held at NORMAL position Below 1.5 V
    Engine switch on (IG) and pattern select switch not pushed 11 to 14 V
    A46-42 (SFTU) - A46-41 (ECCS) V - L Up shift switch signal Engine switch on (IG) and shift lever in M 11 to 14 V
    Engine switch on (IG) and shift lever held in "+" (Up shift) Below 1 V
    A46-43 (SFTD) - A46-41 (ECCS) BR - L Down shift switch signal Engine switch on (IG) and shift lever in M 11 to 14 V
    Engine switch on (IG) and shift lever held in "-" (Down shift) Below 1 V
    A46-44 (SPD) - D1-53 (E1) GR - W-B Vehicle speed signal from combination meter assembly signal Vehicle being driven Pulse generation
    A46-57 (NSW) - D1-53 (E1) GR - W-B Park/neutral position switch signal Engine switch on (IG) and shift lever in P or N Below 3 V
    Engine switch on (IG) and shift lever not in P or N 11 to 14 V
    A46-59 (S) - D1-53 (E1) V - W-B M shift position switch signal Engine switch on (IG) and shift lever in M, "+" or "-" 11 to 14 V
    Engine switch on (IG) and shift lever not in M, "+" or "-" Below 1 V