Toyota CH-R Service Manual: Terminals Of Ecu

Toyota CH-R Service Manual / Theft Deterrent / Keyless Entry / Immobiliser System(w/o Smart Key System) / Terminals Of Ecu

TERMINALS OF ECU

CHECK TRANSPONDER KEY ECU ASSEMBLY

(a) Disconnect the F22 transponder key ECU assembly connector.

(b) Measure the resistance and voltage according to the value(s) in the table below.

HINT:

Measure the values on the wire harness side with the connector disconnected.

Tester Connection	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item
F22-1 (+B) - F22-5 (GND)	Input	W - W-B	Battery	Always	11 to 14 V	+B
F22-2 (IG) - F22-5 (GND)	Input	B - W-B	Ignition switch signal	Ignition switch off	Below 1 V	IG SW
F22-2 (IG) - F22-5 (GND)	Input	B - W-B	Ignition switch signal	Ignition switch ON	11 to 14 V	IG SW
F22-3 (KSW) - F22-5 (GND)	Input	V - W-B	Unlock warning switch signal	No key in ignition key cylinder	10 kΩ or higher	Key SW/B2780
F22-3 (KSW) - F22-5 (GND)	Input	V - W-B	Unlock warning switch signal	Key in ignition key cylinder	Below 1 Ω	Key SW/B2780
F22-5 (GND) - Body ground	-	W-B - Body ground	Ground	Always	Below 1 Ω	-

If the result is not as specified, there may be a malfunction on the wire harness side.

(d) Measure the voltage and check for pulses according to the value(s) in the table below.

Tester Connection	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item
F22-8 (IND) - F22-5 (GND)	Output	P - W-B	Security indicator signal	No key in ignition key cylinder, or 20 sec. elapsed after turning ignition switch to ACC or off (immobiliser system set)	Pulse generation	Immobiliser
F22-8 (IND) - F22-5 (GND)	Output	P - W-B	Security indicator signal	Key in ignition key cylinder (immobiliser system unset)	Below 1 V	Immobiliser
F22-9 (D) - F22-5 (GND)	Input/Output	SB - W-B	DLC3 communication	Without communication	Below 1 V	-
F22-9 (D) - F22-5 (GND)	Input/Output	SB - W-B	DLC3 communication	During communication	Pulse generation	-
F22-4 (ANT1) - F22-5 (GND)	Input/Output	V - W-B	Transponder key amplifier power source	No key in ignition key cylinder	4 to 6 V	-
F22-4 (ANT1) - F22-5 (GND)	Input/Output	V - W-B	Transponder key amplifier power source	Within 3 seconds of inserting key into ignition key cylinder	Pulse generation (See waveform 1)	-
F22-15 (ANT2) - F22-5 (GND)	Input/Output	W - W-B	Transponder key amplifier communication signal	No key in ignition key cylinder	4 to 6 V	-
F22-15 (ANT2) - F22-5 (GND)	Input/Output	W - W-B	Transponder key amplifier communication signal	Within 3 seconds of inserting key into ignition key cylinder	Pulse generation (See waveform 2)	-
F22-12 (EFII) - F22-5 (GND)	Output	G - W-B	ECM input signal	Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal	Pulse generation (See waveform 3)	-
F22-13 (EFIO) - F22-5 (GND)	Input	R - W-B	ECM output signal	Ignition switch off	Below 1 V	-
F22-13 (EFIO) - F22-5 (GND)	Input	R - W-B	ECM output signal	Ignition switch ON	Pulse generation (See waveform 4)	-

If the result is not as specified, the transponder key ECU assembly may be malfunctioning.

(e) Using an oscilloscope, check the waveform.

(1) Waveform 1 (Reference)

Tester Connection	F22-4 (ANT1) - F22-5 (GND)
Tool Setting	20 V/DIV., 2 s./DIV.
Condition	Within 3 seconds of inserting key into ignition key cylinder

(2) Waveform 2 (Reference)

Tester Connection	F22-15 (ANT2) - F22-5 (GND)
Tool Setting	20 V/DIV., 2 s./DIV.
Condition	Within 3 seconds of inserting key into ignition key cylinder

(3) Waveform 3 (Reference)

Approximately 160 ms

Approximately 270 ms

Tester Connection	F22-12 (EFII) - F22-5 (GND)
Tool Setting	2 V/DIV., 500 ms./DIV.
Condition	Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal

(4) Waveform 4 (Reference)

Approximately 160 ms

Approximately 270 ms

Tester Connection	F22-13 (EFIO) - F22-5 (GND)
Tool Setting	2 V/DIV., 500 ms./DIV.
Condition	Ignition switch ON

CHECK ECM

(a) Measure the voltage and resistance, and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
C63-59 (E1) - Body ground	-	W-B - Body ground	Ground	Always	Below 1 Ω	-
A38-45 (IMO) - C63-59 (E1)	Output	GR - W-B	ID code box (immobiliser code ECU) communication output	Ignition switch off	11 to 14 V	-
A38-45 (IMO) - C63-59 (E1)	Output	GR - W-B	ID code box (immobiliser code ECU) communication output	Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery	Pulse generation (See waveform 1)	-
A38-28 (IMI) - C63-59 (E1)	Input	BE - W-B	ID code box (immobiliser code ECU) communication input	Ignition switch off	11 to 14 V	-
A38-28 (IMI) - C63-59 (E1)	Input	BE - W-B	ID code box (immobiliser code ECU) communication input	Ignition switch turned ON using registered electrical key transmitter sub-assembly	Pulse generation (See waveform 2)	-

(b) Using an oscilloscope, check the waveform.

NOTICE:

The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

(1) Waveform 1 (Reference)

Approximately 160 ms.

Approximately 270 ms.

Measurement Condition

Item	Content
Tester Connection	A38-45 (IMO) - C63-59 (E1)
Tool Setting	2 V/DIV., 500 ms./DIV.
Condition	Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery

(2) Waveform 2 (Reference)

Approximately 160 ms.

Approximately 270 ms.

Measurement Condition

Item	Content
Tester Connection	A38-28 (IMI) - C63-59 (E1)
Tool Setting	2 V/DIV., 500 ms./DIV.
Condition	Ignition switch turned ON using registered electrical key transmitter sub-assembly

Registration

REGISTRATION PROCEDURE 1. DESCRIPTION OF CODE REGISTRATION (a) The door control transmitter assembly has 2 codes: the key code (immobiliser code) and the wireless code. Both of these codes need t ...

Diagnosis System

DIAGNOSIS SYSTEM DESCRIPTION (a) The transponder key ECU assembly controls the immobiliser system. Immobiliser system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Dat ...

Other materials:

Toyota CH-R Service Manual > Seat Belt Warning System(w/ Occupant Classification System): Rear Seat Belt Warning Light Malfunction
DESCRIPTION The main body ECU (multiplex network body ECU) detects whether either the rear doors are open or closed based on the condition of the rear door courtesy light switch assemblies condition and then sends the rear door status signal to the combination meter assembly. The combination ...

Toyota CH-R Service Manual > Air Conditioning System(for Automatic Air Conditioning System With Side-mounted Air Conditioner Pressure Sensor): Evaporator Temperature Sensor Circuit (B1413)
DESCRIPTION The No. 1 cooler thermistor (evaporator temperature sensor) is installed to the evaporator in the air conditioner unit to detect the temperature of the cooled air that has passed through the evaporator, which is used to control the air conditioning system. It sends signals to the ...

Toyota CH-R Service Manual: Terminals Of Ecu

Registration

Diagnosis System

Other materials:

Toyota CH-R Owners Manual

Toyota CH-R Service Manual