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

Toyota Tacoma (2015-2018) Service Manual / Cruise Control / Dynamic Radar Cruise Control System(for 2tr-fe) / Terminals Of Ecu

TERMINALS OF ECU

CHECK ECM

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
E19-17 (SFTU) - E17-3 (E1)	SB - W-B	Up-shift position switch signal	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
E19-27 (SFTD) - E17-3 (E1)	R - W-B	Down-shift position switch signal	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
E19-30 (S) - E17-3 (E1)	B - W-B	S shift position switch signal	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
E20-18 (D) - E17-3 (E1)	SB - W-B	D shift position signal	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
E21-10 (STP) - E17-3 (E1)	P - W-B	Stop light switch input signal	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
E21-11 (ST1-) - E17-3 (E1)	V - W-B	Stop light switch assembly signal	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
E21-19 (TC) - E17-3 (E1)	G - W-B	DTC output signal	Ignition switch ON, connect terminals TC and CG of DLC3	Below 2 V

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
F46-8 (BZ) - F46-10 (GND)	L - W-B	Skid control buzzer output	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
F46-7 (IGB) - F46-10 (GND)	BE - W-B	Power source	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
F46-3 (LKSW) - F46-10 (GND)	GR - W-B		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

(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

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

(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

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:

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART If a DTC is displayed during the DTC check, check the parts listed in the table below and proceed to the "See page" given. *1: "Comes on" means the Malfunction Indicator Lamp (MIL) illuminates. *2: "DTC stored" means ...

Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) (C1275,...,C1414)
DESCRIPTION Refer to DTCs C1401 and C1402 (See page ). DTC Code DTC Detection Condition Trouble Area C1275 C1276 Stored only during test mode. Front speed sensor RH/LH Front speed sensor rotor RH/LH (Front ...

Seat heaters
On The indicator comes on. Adjusts the seat temperature. The further you turn the dial upward, the warmer the seat becomes. ■The seat heaters can be used when The engine switch is in the ON position. ■When not in use Turn the dial fully downward. The indicator turns off. CAUT ...