Automatic Transmission System Terminals Of Ecu

Drivetrain. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
A340F Automatic Transmission Transaxle. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
  1. CHECK TCM

  1. CHECK ECM

Automatic Transmission System -- Terminals Of Ecu



CHECK TCM

Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System.Automatic Transmission System  Terminals Of Ecu

HINT:
The standard voltage at 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 inspect. The standard voltage between the terminals is shown under "Specified Condition".
Use the illustration above as a reference for the TCM terminals.

Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
C24-12 (NSW) - C24-1 (E1)
L-Y - BR
PNP switch signal
  1. Ignition switch ON
  2. Shift lever in P or N
Below 1 V
  1. Ignition switch ON
  2. Shift lever not in P or N
11 to 14 V
G40-9 (R) - C24-1 (E1)
R-Y - BR
R shift position switch signal
  1. Ignition switch ON
  2. Shift lever in R
11 to 14 V
  1. Ignition switch ON
  2. Shift lever not in R
Below 1 V
G40-8 (D) - C24-1 (E1)
G-Y - BR
D shift position switch signal
  1. Ignition switch ON
  2. Shift lever in D or 3
11 to 14 V
  1. Ignition switch ON
  2. Shift lever not in D or 3
Below 1 V
G40-12 (3) - C24-1 (E1)
G-O - BR
3 shift position switch signal
  1. Ignition switch ON
  2. Shift lever in 3
11 to 14 V
  1. Ignition switch ON
  2. Shift lever not in 3
Below 1 V
G40-11 (2) - C24-1 (E1)
L - BR
2 shift position switch signal
  1. Ignition switch ON
  2. Shift lever in 2
11 to 14 V
  1. Ignition switch ON
  2. Shift lever not in 2
Below 1 V
G40-10 (L) - C24-1 (E1)
G-R - BR
L shift position switch signal
  1. Ignition switch ON
  2. Shift lever in L
11 to 14 V
  1. Ignition switch ON
  2. Shift lever not in L
Below 1 V
C24-18 (S1) - C24-1 (E1)
GR - BR
S1 solenoid signal
1st or 2nd gear
11 to 14 V
3rd or 4th gear
Below 1 V
C24-17 (S2) - C24-1 (E1)
W-L - BR
S2 solenoid signal
2nd or 3rd gear
11 to 14 V
1st or 4th gear
Below 1 V
C24-20 (SLT+) - C24-19 (SLT-)
G-Y - L-B
SLT solenoid signal
Engine idling
Pulse generation
C24-16 (SL) - C24-1 (E1)
G - BR
SL solenoid signal
Vehicle speed 65 km/h (40 mph), lockup (ON to OFF)
Pulse generation
(See waveform 1)
Vehicle driving under look-up condition
11 to 14 V
C24-24 (THOC) - C24-23 (E2)
BR - B-Y
ATF temperature sensor signal
ATF temperature: 115°C (239°F) or higher
Below 1.5 V
C24-30 (SP2+) - C24-29 (SP2-)
R - G
Speed sensor SP2 signal
Vehicle speed 20 km/h (12 mph)
Pulse generation
(See waveform 2)
C24-3 (NC0+) - C24-2 (NC0-)
V - P
Speed sensor NC0 signal
Engine idling
(shift lever in P or N)
Pulse generation
(See waveform 3)
G40-15 (L4) - C24-1 (E1)
G-W - BR
L4 position signal
  1. Ignition switch ON
  2. Transfer in L4
Below 1 V
  1. Ignition switch ON
  2. Transfer not in L4
11 to 14 V
G41-25 (SPD1) - C24-1 (E1)
V-R - BR
Speed signal
Vehicle speed 20 km/h (12 mph)
Pulse generation
(See waveform 4)
G41-14 (STP) - C24-1 (E1)
G-W - BR
STP light switch signal
Brake pedal is depressed
7.5 to 14 V
Brake pedal is released
Below 1 V
C24-11 (STA) - C24-1 (E1)
B-Y - BR
Starter signal
Cranking
6 V or more
G40-16 (TFN) - C24-1 (E1)
W-G - BR
N shift position switch signal
  1. Ignition switch ON
  2. Transfer shift lever on N
Below 1 V
  1. Ignition switch ON
  2. Transfer shift lever not on N
11 to 14 V
G41-6 (IG2) - C24-1 (E1)
B-O - BR
Ignition switch
Ignition switch ON
11 to 14 V
G41-21 (CAN+) - C24-1 (E1)
V - BR
CAN communication line
Ignition switch ON
Pulse generation
(See waveform 5)
G41-20 (CAN-) - C24-1 (E1)
P - BR
CAN communication line
Ignition switch ON
Pulse generation
(See waveform 6)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System.Automatic Transmission System  Terminals Of Ecu
  1. Using an oscilloscope, check waveform 1.

    Reference
    Terminal No. (Symbol)
    Tool Setting
    Condition
    C24-16 (SL) - C24-1 (E1)
    10 V/DIV., 100 msec./DIV.
    Vehicle speed 65 km/h (40 mph), lockup (ON to OFF)


  2. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System.Automatic Transmission System  Terminals Of Ecu
  3. Using an oscilloscope, check waveform 2.

    Reference
    Terminal No. (Symbol)
    Tool Setting
    Condition
    C24-30 (SP2+) - C24-29 (SP2-)
    2 V/DIV., 20 msec./DIV.
    Vehicle speed 20 km/h (12 mph)


  4. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System.Automatic Transmission System  Terminals Of Ecu
  5. Using an oscilloscope, check waveform 3.

    Reference
    Terminal No. (Symbol)
    Tool Setting
    Condition
    C24-3 (NC0+) - C24-2 (NC0-)
    5 V/DIV., 0.5 msec./DIV.
    Engine idling (shift lever in P or N)


  6. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System.Automatic Transmission System  Terminals Of Ecu
  7. Using an oscilloscope, check waveform 4.

    Reference
    Terminal No. (Symbol)
    Tool Setting
    Condition
    G41-25 (SPD1) - C24-1 (E1)
    5 V/DIV., 20 msec./DIV.
    Vehicle speed 20 km/h (12 mph)


  8. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System.Automatic Transmission System  Terminals Of Ecu
  9. Using an oscilloscope, check waveform 5.

    Reference
    Terminal No. (Symbol)
    Tool Setting
    Condition
    G41-21 (CAN+) - C24-1 (E1)
    1 V/DIV., 10 μsec./DIV.
    Ignition switch ON


  10. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System.Automatic Transmission System  Terminals Of Ecu
  11. Using an oscilloscope, check waveform 6.

    Reference
    Terminal No. (Symbol)
    Tool Setting
    Condition
    G41-20 (CAN-) - C24-1 (E1)
    1 V/DIV., 10 μsec./DIV.
    Ignition switch ON

CHECK ECM

Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System.Automatic Transmission System  Terminals Of Ecu

HINT:
The standard voltage at 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 inspect. 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
G39-1 (+B) - C23-7 (E1)
B - BR
Power source of ECM
Ignition switch ON
11 to 14 V
G38-22 (CAN+) - C23-7 (E1)
V - BR
CAN communication line
Ignition switch ON
Pulse generation
(See waveform 1)
G38-21 (CAN-) - C23-7 (E1)
P - BR
CAN communication line
Ignition switch ON
Pulse generation
(See waveform 2)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System.Automatic Transmission System  Terminals Of Ecu
  1. Using an oscilloscope, check waveform 1.

    Reference
    Terminal No. (Symbol)
    Tool Setting
    Condition
    G38-22 (CAN+) - C23-7 (E1)
    1 V/DIV., 10 μsec./DIV.
    Ignition switch ON


  2. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System.Automatic Transmission System  Terminals Of Ecu
  3. Using an oscilloscope, check waveform 2.

    Reference
    Terminal No. (Symbol)
    Tool Setting
    Condition
    G38-21 (CAN-) - C23-7 (E1)
    1 V/DIV., 10 μsec./DIV.
    Ignition switch ON