Toyota Tacoma manuals

Toyota Tacoma (2015-2018) Service Manual: Terminals Of Ecu

TERMINALS OF ECU

CHECK ECM

HINT:

HINT:

The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resistance and waveform for each pair of the terminals as displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

Terminal No. (Symbols)

Wiring Color

Terminal Description

Condition

Specified Condition

E17-3 (E1) - Body ground

W-B - Body ground

Ground

Always

Below 1 V

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

E19-27 (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

E19-30 (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

E20-18 (D) - E17-3 (E1)

SB - W-B

D shift position signal

Ignition switch ON, shift lever in D

11 to 14 V

Ignition switch ON, shift lever not in D

Below 1 V

E20-22 (CCS) - E17-3 (E1)

B - W-B

Cruise control main switch output signal

CANCEL switch ON

1509 to 1571 Ω

-SET switch ON

617 to 643 Ω

+RES switch ON

235 to 245 Ω

Cruise control main switch (ON-OFF button) not pushed

1 MΩ or higher

Cruise control main switch (ON-OFF button) pushed

Below 2.5 Ω

E21-10 (STP) - E17-3 (E1)

P - W-B

Stop light switch input signal

Brake pedal depressed

11 to 14 V

Brake pedal released

Below 1 V

E21-11 (ST1-) - E17-3 (E1)

V - W-B

Stop light switch assembly signal

Ignition switch ON, brake pedal depressed

Below 1 V

Ignition switch ON, brake pedal released

11 to 14 V

E21-19 (TC) - E17-3 (E1)

G - W-B

DTC output signal

Ignition switch ON

11 to 14 V

Ignition switch ON, connect terminals TC and CG of DLC3

Below 2 V

NOTICE:

NOTICE:

Do not apply excessive force to the connector. If a force of 10 kg or more is applied, the connector may be broken.

CHECK FORWARD RECOGNITION CAMERA

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

F46-8 (BZ) - F46-10 (GND)

L - W-B

Skid control buzzer output

Ignition switch to ON, buzzer not sounding

11 to 14 V

Ignition switch to ON, buzzer sounding

Below 1 V

F46-7 (IGB) - F46-10 (GND)

BE - W-B

Power source

Ignition switch to ON

11 to 14 V

Ignition switch off

Below 1 V

F46-5 (CA1P) - F46-10 (GND)

L - W-B

CAN communication signal

Ignition switch to ON

Pulse generation

(See waveform 1)

F46-11 (CA1N) - F46-10 (GND)

W - W-B

CAN communication signal

Ignition switch to ON

Pulse generation

(See waveform 2)

F46-6 (CANH) - F46-10 (GND)

B - W-B

CAN communication signal

Ignition switch to ON

Pulse generation

(See waveform 1)

F46-12 (CANL) - F46-10 (GND)

W - W-B

CAN communication signal

Ignition switch to ON

Pulse generation

(See waveform 2)

F46-3 (LKSW) - F46-10 (GND)

GR - W-B

Steering pad switch assembly signal (distance control signal)

Ignition switch to ON, steering pad switch assembly (distance control switch) off

4.75 to 5.25 V

Ignition switch to ON, steering pad switch assembly (distance control switch) on

Below 1 V

F46-10 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(a) Waveform 1

(a) Waveform 1

(1) CAN communication signal

Item

Content

Tester Connection

  • Between F46-5 (CA1P) and F46-10 (GND)
  • Between F46-6 (CANH) and F46-10 (GND)

Tool Setting

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch to ON

HINT:

The waveform varies depending on the CAN communication signal.

(b) Waveform 2

(1) CAN communication signal

(1) CAN communication signal

Item

Content

Tester Connection

  • Between F46-11 (CA1N) and F46-10 (GND)
  • Between F46-12 (CANL) and F46-10 (GND)

Tool Setting

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch to ON

HINT:

The waveform varies depending on the CAN communication signal.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

M8-1 (SGND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

M8-2 (CA2L) - M8-1 (SGND)

W - W-B

CAN communication signal

Ignition switch to ON

Pulse generation

(See waveform 2)

M8-3 (CA2H) - M8-1 (SGND)

W-B - W-B

CAN communication signal

Ignition switch to ON

Pulse generation

(See waveform 1)

M8-5 (CA1P) - M8-1 (SGND)

B - W-B

CAN communication signal

Ignition switch to ON

Pulse generation

(See waveform 1)

M8-6 (CA1N) - M8-1 (SGND)

W - W-B

CAN communication signal

Ignition switch to ON

Pulse generation

(See waveform 2)

M8-8 (IGB) - M8-1 (SGND)

LG - W-B

Power source

Ignition switch to ON

11 to 14 V

CHECK MILLIMETER WAVE RADAR SENSOR

(a) Waveform 1

(a) Waveform 1

(1) CAN communication signal

Item

Content

Tester Connection

  • Between M8-3 (CA2H) and M8-1 (SGND)
  • Between M8-5 (CA1P) and M8-1 (SGND)

Tool Setting

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch to ON

HINT:

The waveform varies depending on the CAN communication signal.

(b) Waveform 2

(1) CAN communication signal

(1) CAN communication signal

Item

Content

Tester Connection

  • Between M8-2 (CA2L) and M8-1 (SGND)
  • Between M8-6 (CA1N) and M8-1 (SGND)

Tool Setting

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch to ON

HINT:

The waveform varies depending on the CAN communication signal.

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE: Before replacing the ECM, refer to Registration. w/ Smart Key System: Click here w/o Smart Key System: Click here When the millimeter wave rad ...

Diagnosis System
DIAGNOSIS SYSTEM DIAGNOSIS FUNCTION (a) The diagnosis function turns off the cruise control indicator, illuminates the master warning light and displays a warning message when a malfunction is det ...

Other materials:

Initialization
INITIALIZATION 1. ZERO POINT CALIBRATION NOTICE: Make sure that the front passenger seat is not occupied before performing the operation. HINT: Perform the zero point calibration and sensitivity check if any of the following conditions apply. The occupant detection ECU is replaced. ...

Crankshaft Position Sensor "A" Signal Stuck in Range (P03352A,P033531)
DESCRIPTION The crankshaft position sensor system consists of a crankshaft position sensor plate and a pickup coil. The crankshaft position sensor plate has 34 teeth and is installed to the crankshaft. The pickup coil is made of wound copper wire, an iron core and a magnet. The crankshaft pos ...

Open or Short in Rear Speed Sensor RH Circuit (C1407,C1408)
DESCRIPTION Refer to DTCs C1403 and C1404 (See page ). DTC No. Detection Item DTC Detection Condition Trouble Area C1407 Open or Short in Rear Speed Sensor RH Circuit Either of the following is detected: ...

© 2011-2024 Copyright www.ttguide.net