AUTOMATIC TRANSMISSION SYSTEM TERMINALS OF ECU


  1. TCM

    A01GKSHE01

    Tech Tips

    The standard voltage of each TCM terminal is shown in the table below.

    In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition".

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    E5-26 (P) - E5-7 (E1) W - BR Park position switch signal Engine switch on (IG) and shift lever in P 11 to 14 V
    E5-26 (P) - E5-7 (E1) W - BR Park position switch signal Engine switch on (IG) and shift lever not in P Below 1 V
    E5-34 (R) - E5-7 (E1) G - BR R position switch signal Engine switch on (IG) and shift lever in R 11 to 14 V
    E5-34 (R) - E5-7 (E1) G - BR R position switch signal Engine switch on (IG) and shift lever not in R Below 1 V
    E5-33 (N) - E5-7 (E1) G-R - BR N position switch signal Engine switch on (IG) and shift lever in N 11 to 14 V
    E5-33 (N) - E5-7 (E1) G-R - BR N position switch signal Engine switch on (IG) and shift lever not in N Below 1 V
    E5-25 (D) - E5-7 (E1) G-Y - BR D position switch signal Engine switch on (IG) and shift lever in D or S 11 to 14 V
    E5-25 (D) - E5-7 (E1) G-Y - BR D position switch signal Engine switch on (IG) and shift lever not in D or S Below 1 V
    A12-2 (STP) - E5-7 (E1) L - BR Stop light switch signal Brake pedal is depressed 7.5 to 14 V
    A12-2 (STP) - E5-7 (E1) L - BR Stop light switch signal Brake pedal is released Below 1 V
    E6-27 (THO1) - E6-35 (E2) G-Y - BR ATF temperature sensor signal ATF temperature 115°C (239°F) or higher Below 1.5 V
    E6-6 (SL1+) - E6-5 (SL1-) Y - L Shift solenoid valve SL1 signal 1st, 2nd, 3rd, 4th or 5th gear Pulse generation
    E6-4 (SL2+) - E6-3 (SL2-) BR - Y Shift solenoid valve SL2 signal 5th, 6th, 7th or 8th gear Pulse generation
    E6-2 (SL3+) - E6-1 (SL3-) L - B Shift solenoid valve SL3 signal 3rd or 7th gear Pulse generation
    E7-7 (SL4+) - E7-6 (SL4-) B - W Shift solenoid valve SL4 signal 4th or 6th gear Pulse generation
    E7-5 (SL5+) - E7-4 (SL5-) L - BR Shift solenoid valve SL5 signal 2nd or 8th gear Pulse generation
    E7-3 (SLT+) - E7-2 (SLT-) B - G Shift solenoid valve SLT signal Engine idling Pulse generation
    E7-1 (SLU+) - E7-8 (SLU-) W - L-R Shift solenoid valve SLU signal

    4th, 5th, 6th, 7th or 8th gear

    (Flex lock-up on)

    		 Pulse generation
    E6-7 (SL) - E5-7 (E1) L-R - BR Shift solenoid valve SL signal All gears 11 to 14 V
    E7-17 (SR) - E5-7 (E1) G - BR Shift solenoid valve SR signal All gears 11 to 14 V
    E7-31 (NTB) - E5-7 (E1) G-W - BR Power source for sensor (fixed voltage) Engine switch on (IG) 11 to 14 V
    E7-25 (NTO) - E5-7 (E1) BR - BR Speed sensor NT signal Engine idling (shift lever in P or N)

    Pulse generation

    (see waveform 1)
    E7-28 (NC3B) - E5-7 (E1) G - BR Power source for sensor (fixed voltage) Engine switch on (IG) 11 to 14 V
    E7-22 (NC3O) - E5-7 (E1) R - BR Speed sensor NC3 signal 1st, 3rd, 4th, 5th, 6th or 7th gear

    Pulse generation

    (see waveform 2)
    E7-26 (SP2B) - E5-7 (E1) Y - BR Power source for sensor (fixed voltage) Engine switch on (IG) 11 to 14 V
    E7-18 (SP2O) - E5-7 (E1) L - BR Speed sensor SP2 signal Vehicle speed 20 km/h (12 mph)

    Pulse generation

    (see waveform 3)
    E6-25 (TPS1) - E5-7 (E1) L - BR Oil pressure switch signal 6th to 8th gear 11 to 14 V
    E6-25 (TPS1) - E5-7 (E1) L - BR Oil pressure switch signal 1st to 5th gear Below 1 V
    A12-3 (STA) - E5-7 (E1) Y - BR Starter signal Cranking (shift lever in P or N, engine switch start) 11 to 14 V
    A12-3 (STA) - E5-7 (E1) Y - BR Starter signal Engine switch on (IG) and shift lever in P or N Below 2 V
    A12-4 (IG2) - E5-7 (E1) R - BR Engine switch Engine switch on (IG) 11 to 14 V
    A12-7 (BATT) - E5-7 (E1) R - BR Battery (for measuring battery voltage and for TCM memory) Always 11 to 14 V
    A12-6 (+B) - E5-7 (E1) B-W - BR Power source of TCM Engine switch on (IG) 11 to 14 V
    A12-18 (CAN+) - E5-7 (E1) B - BR CAN communication line Engine switch on (IG)

    Pulse generation

    (see waveform 4)
    A12-28 (CAN-) - E5-7 (E1) W - BR CAN communication line Engine switch on (IG)

    Pulse generation

    (see waveform 5)

    1. A01GKBNE02

      Using an oscilloscope, check waveform 1.

      Reference
      Item Content
      Terminal No. (Symbol) E7-25 (NTO) - E5-7 (E1)
      Tool setting 5 V/DIV., 2 msec./DIV.
      Condition Engine idling (shift lever in P or N)
    2. A01GKBNE02

      Using an oscilloscope, check waveform 2.

      Reference
      Item Content
      Terminal No. (Symbol) E7-22 (NC3O) - E5-7 (E1)
      Tool setting 5 V/DIV., 2 msec./DIV.
      Condition 1st, 3rd, 4th, 5th, 6th or 7th gear
    3. A01GL4LE02

      Using an oscilloscope, check waveform 3.

      Reference
      Item Content
      Terminal No. (Symbol) E7-18 (SP2O) - E5-7 (E1)
      Tool setting 5 V/DIV., 2 msec./DIV.
      Condition Vehicle speed 20 km/h (12 mph)
    4. A01GM77E12

      Using an oscilloscope, check waveform 4.

      Reference
      Item Content
      Terminal No. (Symbol) A12-18 (CAN+) - E5-7 (E1)
      Tool setting 1 V/DIV., 10 msec./DIV.
      Condition Engine switch on (IG)
    5. A01GLAKE11

      Using an oscilloscope, check waveform 5.

      Reference
      Item Content
      Terminal No. (Symbol) A12-28 (CAN-) - E5-7 (E1)
      Tool setting 1 V/DIV., 10 msec./DIV.
      Condition Engine switch on (IG)

  2. ECM

    A01GJNSE01

    Tech Tips

    The standard voltage of each ECM terminal is shown in the table below.

    In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition".

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

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A13-16 (S) - E3-1 (E1) G - W-B S position switch signal Engine switch on (IG) and shift lever in S 11 to 14 V
    A13-16 (S) - E3-1 (E1) G - W-B S position switch signal Engine switch on (IG) and shift lever not in S Below 1 V
    A13-8 (SFTU) - E3-1 (E1) Y - W-B Up-shift position switch signal Engine switch on (IG) and shift lever in S 11 to 14 V
    A13-8 (SFTU) - E3-1 (E1) Y - W-B Up-shift position switch signal Engine switch on (IG) and shift lever in "+" (up-shift) Below 1 V
    A13-7 (SFTD) - E3-1 (E1) L - W-B Down-shift position switch signal Engine switch on (IG) and shift lever in S 11 to 14 V
    A13-7 (SFTD) - E3-1 (E1) L - W-B Down-shift position switch signal Engine switch on (IG) and shift lever in "-" (down-shift) Below 1 V