Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Terminals Of Ecm

TERMINALS OF ECM

1. ECM

HINT:

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:

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART NOTICE: When removing any parts, turn the ignition switch off. HINT: If no abnormality is found when inspecting parts, check the skid control ECU and check for poor contact at ground points. When 2 or more DTCs are detected, perform each circuit insp ...

Certification ECU Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Certification ECU Communication Stop Mode Either condition is met: Communication stop for "Certification (Smart)" is indicated on the "Communication Bus Ch ...

Transponder Chip Malfunction (B2793,B2794,B2797,B2798)
DESCRIPTION DTC B2793 is stored when a malfunction is found in the key during key code registration or a key code is not registered normally. Replace the key if key code registration cannot be performed normally and this DTC is output. DTC B2794 is stored when a key with an i ...

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