Toyota Tacoma (2015-2018) Service Manual: Terminals Of Ecm
TERMINALS OF ECM
1. ECM
HINT:
The standard voltage between each pair of ECM terminals 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 |
|---|---|---|---|---|
|
E18-9 (SP2O) - E17-3 (E1) |
L - W-B |
Transmission revolution sensor (SP2) signal |
Vehicle driving |
Pulse generation |
|
E18-10 (SP2B) - E17-3 (E1) |
G - W-B |
Power source for sensor (fixed voltage) |
Ignition switch ON |
11 to 14 V |
|
E18-12 (SL) - E17-3 (E1) |
R - W-B |
Shift solenoid valve SL signal |
All gears |
11 to 14 V |
|
E18-15 (NSW) - E17-3 (E1) |
V - W-B |
Park/neutral position switch signal |
Ignition switch ON and shift lever in P or N |
Below 1 V |
|
Ignition switch ON and shift lever not in P or N |
11 to 14 V |
|||
|
E19-2 (SLU+) - E19-1 (SLU-) |
P - L |
Shift solenoid valve SLU signal |
2nd, 3rd, 4th, 5th or 6th gear (Flex lock-up on) |
Pulse generation |
|
E19-5 (SLT+) - E19-4 (SLT-) |
LG - Y |
Shift solenoid valve SLT signal |
Engine idling |
Pulse generation |
|
E19-7 (SL2+) - E19-6 (SL2-) |
GR - BE |
Shift solenoid valve SL2 signal |
4th, 5th or 6th gear |
Pulse generation |
|
E19-9 (SL1+) - E19-8 (SL1-) |
R - V |
Shift solenoid valve SL1 signal |
1st, 2nd, 3rd or 4th gear |
Pulse generation |
|
E19-13 (SL4+) - E19-12 (SL4-) |
SB - BE |
Shift solenoid valve SL4 signal |
3rd or 5th gear |
Pulse generation |
|
E19-16 (SL3+) - E19-15 (SL3-) |
B - W |
Shift solenoid valve SL3 signal |
2nd or 6th gear |
Pulse generation |
|
E19-17 (SFTU) - E17-3 (E1) |
SB - W-B |
Up-shift position switch signal |
Ignition switch ON and shift lever in S |
11 to 14 V |
|
Ignition switch ON and shift lever in "+" (Up-shift) |
Below 1 V |
|||
|
E19-19 (NTO) - E17-3 (E1) |
W - W-B |
Transmission revolution sensor (NT) signal |
Engine idling |
Pulse generation |
|
E19-20 (THO1) - E19-21 (ETHO) |
P - V |
No. 1 ATF temperature sensor signal |
No. 1 ATF temperature: 115°C (239°F) or higher |
Below 1.5 V |
|
E19-22 (THO2) - E19-21 (ETHO) |
L - V |
No. 2 ATF temperature sensor signal |
No. 2 ATF temperature: 115°C (239°F) or higher |
Below 1.5 V |
|
E19-24 (N) - E17-3 (E1) |
G - 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 |
|||
|
E19-25 (P) - E17-3 (E1) |
GR - 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 |
|||
|
E19-27 (SFTD) - E17-3 (E1) |
R - W-B |
Down-shift position switch signal |
Ignition switch ON and shift lever in S |
11 to 14 V |
|
Ignition switch ON and shift lever in "-" (Down-shift) |
Below 1 V |
|||
|
E19-29 (NTB) - E17-3 (E1) |
Y - W-B |
Power source for sensor (fixed voltage) |
Ignition switch ON |
11 to 14 V |
|
E19-30 (S) - E17-3 (E1) |
B - W-B |
S shift position switch signal |
Ignition switch ON and shift lever in S, "+" or "-" |
11 to 14 V |
|
Ignition switch ON and shift lever not in S, "+" or "-" |
Below 1 V |
|||
|
E20-8 (R) - E17-3 (E1) |
V - 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 |
|||
|
E20-13 (CANH) - E17-3 (E1) |
B - W-B |
CAN communication line |
Ignition switch ON |
Pulse generation |
|
E20-14 (CANL) - E17-3 (E1) |
W - W-B |
CAN communication line |
Ignition switch ON |
Pulse generation |
|
E20-18 (D) - E17-3 (E1) |
SB - W-B |
D shift position switch signal |
Ignition switch ON and shift lever in D, S, "+" or "-" |
11 to 14 V |
|
Ignition switch ON and shift lever not in D, S, "+" or "-" |
Below 1 V |
|||
|
E21-14 (PWMS) - E17-3 (E1) |
P - W-B |
Pattern select switch signal |
Ignition switch ON and pattern select switch pushed |
Below 1 V |
|
Ignition switch ON and pattern select switch not pushed |
11 to 14 V |
Dtc Check / Clear
DTC CHECK / CLEAR
NOTICE:
When the diagnosis system is changed from normal mode to check mode or vice versa,
all DTCs and freeze frame data recorded in normal mode are cleared. Before changing
m ...
Check Mode Procedure
CHECK MODE PROCEDURE
1. DESCRIPTION
(a) Check mode has a higher sensitivity to malfunctions and can detect malfunctions
that normal mode cannot detect. Check mode can also detect all the malfuncti ...
Other materials:
Brake Switch "B" Circuit Short to Battery (P070312)
DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling while driving
in lock-up when the brakes are suddenly applied.
When the brake pedal is depressed, this switch sends a signal to the ECM. Then
the ECM cancels the operation of the lock-up clutch while braking is in p ...
Data List / Active Test
DATA LIST / ACTIVE TEST
1. READ DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful because intermittent conditions or sig ...
Precaution
PRECAUTION
1. PRECAUTION
NOTICE:
When disconnecting the cable from the negative (-) battery terminal,
initialize the following systems after the cable is reconnected (See page
).
Perform the Reset Memory procedures (A/T initialization) after replacing
the automatic transmi ...
