Toyota CH-R Service Manual: Terminals Of Ecu

Toyota CH-R Service Manual / Networking / Can Communication System / Terminals Of Ecu

TERMINALS OF ECU

NOTICE:

After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
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Before measuring the resistance of the CAN bus, turn the ignition switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
This section describes the standard values for all CAN related components.

HINT:

The systems (ECUs and sensors) that use CAN communication vary depending on the vehicle and optional equipment. Check which systems (ECUs and sensors) are installed to the vehicle.
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Operating the ignition switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.

NO. 1 CAN JUNCTION CONNECTOR (w/o Blind Spot Monitor System)

(a) Check the No. 1 CAN junction connector.

(1) Connection diagram

Front view of wire harness connector

(to No. 1 CAN Junction Connector)

to Forward Recognition Camera

(w/ Toyota Safety Sense P)

to Millimeter Wave Radar Sensor Assembly

(w/ Toyota Safety Sense P)

to Central Gateway ECU (Network Gateway ECU)

(2) Check the connection diagram of the components which are connected to the No. 1 CAN junction connector.

Terminal No. (Symbol)	Wiring Color	Connected to
F112-2 (CANH)	R	Forward recognition camera*1 (for Bus 1)
F112-13 (CANL)	GR	Forward recognition camera*1 (for Bus 1)
F112-3 (CANH)	G	Millimeter wave radar sensor assembly*1 (for Bus 1)
F112-14 (CANL)	GR	Millimeter wave radar sensor assembly*1 (for Bus 1)
F112-4 (CANH)	B	Central gateway ECU (network gateway ECU) (for Bus 1)
F112-15 (CANL)	GR	Central gateway ECU (network gateway ECU) (for Bus 1)
F112-5 (CANH)	P	Central gateway ECU (network gateway ECU) (for Bus 1)
F112-16 (CANL)	GR	Central gateway ECU (network gateway ECU) (for Bus 1)

*1: w/ Toyota Safety Sense P

NO. 1 CAN JUNCTION CONNECTOR (w/ Blind Spot Monitor System)

(a) Check the No. 1 CAN junction connector.

(1) Connection diagram

Front view of wire harness connector

(to No. 1 CAN Junction Connector)

to Forward Recognition Camera

(w/ Toyota Safety Sense P)

to Millimeter Wave Radar Sensor Assembly

(w/ Toyota Safety Sense P)

to No. 6 CAN Junction Connector

to Central Gateway ECU (Network Gateway ECU)

(2) Check the connection diagram of the components which are connected to the No. 1 CAN junction connector.

Terminal No. (Symbol)	Wiring Color	Connected to
F112-2 (CANH)	R	Forward recognition camera*1 (for Bus 1)
F112-13 (CANL)	GR	Forward recognition camera*1 (for Bus 1)
F112-3 (CANH)	G	Millimeter wave radar sensor assembly*1 (for Bus 1)
F112-14 (CANL)	GR	Millimeter wave radar sensor assembly*1 (for Bus 1)
F112-4 (CANH)	B	No. 6 CAN junction connector (for Bus 1)
F112-15 (CANL)	GR	No. 6 CAN junction connector (for Bus 1)
F112-5 (CANH)	P	Central gateway ECU (network gateway ECU) (for Bus 1)
F112-16 (CANL)	GR	Central gateway ECU (network gateway ECU) (for Bus 1)

*1: w/ Toyota Safety Sense P

NO. 3 CAN JUNCTION CONNECTOR

(a) Check the No. 3 CAN junction connector.

(1) Connection diagram

*a	Front view of wire harness connector (to No. 3 CAN Junction Connector)	*b	to Combination Meter Assembly
*c	to Main Body ECU (Multiplex Network Body ECU)	*d	to Headlight ECU Sub-assembly LH (for LED Headlight)
*e	to Air Conditioning Amplifier Assembly	*f	to Certification ECU (Smart Key ECU Assembly) (w/ Smart Key System)
*g	to Central Gateway ECU (Network Gateway ECU)	*h	to DCM (Telematics Transceiver) (w/ Telematics Transceiver)
*i	to Radio and Display Receiver Assembly (for Radio and Display Type)	-	-

(2) Check the connection diagram of the components which are connected to the No. 3 CAN junction connector.

Terminal No. (Symbol)	Wiring Color	Connected to
F114-1 (CANH)	V	Combination meter assembly (for Bus 5)
F114-12 (CANL)	SB	Combination meter assembly (for Bus 5)
F114-2 (CANH)	G	Main body ECU (multiplex network body ECU) (for Bus 5)
F114-13 (CANL)	SB	Main body ECU (multiplex network body ECU) (for Bus 5)
F114-3 (CANH)	L	Headlight ECU Sub-assembly LH*1 (for Bus 5)
F114-14 (CANL)	SB	Headlight ECU Sub-assembly LH*1 (for Bus 5)
F114-4 (CANH)	P	Air conditioning amplifier assembly (for Bus 5)
F114-15 (CANL)	SB	Air conditioning amplifier assembly (for Bus 5)
F114-5 (CANH)	R	Certification ECU (smart key ECU assembly)*2 (for Bus 5)
F114-16 (CANL)	SB	Certification ECU (smart key ECU assembly)*2 (for Bus 5)
F114-6 (CANH)	B	Central gateway ECU (network gateway ECU) (for Bus 5)
F114-17 (CANL)	SB	Central gateway ECU (network gateway ECU) (for Bus 5)
F114-8 (CANH)	GR	DCM (Telematics transceiver)*3 (for Bus 3)
F114-19 (CANL)	LG	DCM (Telematics transceiver)*3 (for Bus 3)
F114-9 (CANH)	B	Radio and display receiver assembly*4 (for Bus 3)
F114-20 (CANL)	LG	Radio and display receiver assembly*4 (for Bus 3)
F114-10 (CANH)	G	Central gateway ECU (network gateway ECU) (for Bus 3)
F114-21 (CANL)	LG	Central gateway ECU (network gateway ECU) (for Bus 3)
F114-11 (CANH)	V	Central gateway ECU (network gateway ECU) (for Bus 3)
F114-22 (CANL)	LG	Central gateway ECU (network gateway ECU) (for Bus 3)

*1: for LED Headlight
*2: w/ Smart Key System
*3: w/ Telematics Transceiver
*4: for Radio and Display Type

NO. 4 CAN JUNCTION CONNECTOR

(a) Check the No. 4 CAN junction connector.

(1) Connection diagram

Front view of wire harness connector

(to No. 4 CAN Junction Connector)

to Airbag Sensor Assembly

to Steering Sensor

to Power Steering ECU Assembly

to No. 5 CAN Junction Connector

(2) Check the connection diagram of the components which are connected to the No. 4 CAN junction connector.

Terminal No. (Symbol)	Wiring Color	Connected to
F123-1 (CANH)	B	Airbag sensor assembly (for Bus 4)
F123-12 (CANL)	W	Airbag sensor assembly (for Bus 4)
F123-5 (CANH)	BE	Steering sensor (for Bus 4)
F123-16 (CANL)	W	Steering sensor (for Bus 4)
F123-6 (CANH)	P	Power steering ECU assembly (for Bus 4)
F123-17 (CANL)	W	Power steering ECU assembly (for Bus 4)
F123-7 (CANH)	GR	No. 5 CAN junction connector (for Bus 4)
F123-18 (CANL)	W	No. 5 CAN junction connector (for Bus 4)

NO. 5 CAN JUNCTION CONNECTOR

(a) Check the No. 5 CAN junction connector.

(1) Connection diagram

Front view of wire harness connector

(to No. 5 CAN Junction Connector)

to No. 4 CAN Junction Connector

to Central Gateway ECU (Network Gateway ECU)

to Occupant Detection ECU

(w/ Occupant Detection ECU)

to Brake Actuator Assembly

(2) Check the connection diagram of the components which are connected to the No. 5 CAN junction connector.

Terminal No. (Symbol)	Wiring Color	Connected to
F124-1 (CANH)	GR	No. 4 CAN junction connector (for Bus 4)
F124-12 (CANL)	W	No. 4 CAN junction connector (for Bus 4)
F124-2 (CANH)	B	Central gateway ECU (network gateway ECU) (for Bus 4)
F124-13 (CANL)	W	Central gateway ECU (network gateway ECU) (for Bus 4)
F124-4 (CANH)	SB	Occupant detection ECU*1 (for Bus 4)
F124-15 (CANL)	W	Occupant detection ECU*1 (for Bus 4)
F124-5 (CANH)	LG	Brake actuator assembly (for Bus 4)
F124-16 (CANL)	W	Brake actuator assembly (for Bus 4)

*1: w/ Occupant Detection ECU

NO. 6 CAN JUNCTION CONNECTOR (w/ Blind Spot Monitor System)

(a) Check the No. 6 CAN junction connector.

(1) Connection diagram

Front view of wire harness connector

(to No. 6 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

to Blind Spot Monitor Sensor LH

to No. 1 CAN Junction Connector

(2) Check the connection diagram of the components which are connected to the No. 6 CAN junction connector.

Terminal No. (Symbol)	Wiring Color	Connected to
M92-1 (CANH)	R	Central gateway ECU (network gateway ECU) (for Bus 1)
M92-12 (CANL)	GR	Central gateway ECU (network gateway ECU) (for Bus 1)
M92-6 (CANH)	G	Blind spot monitor sensor LH (for Bus 1)
M92-17 (CANL)	GR	Blind spot monitor sensor LH (for Bus 1)
M92-11 (CANH)	B	No. 1 CAN junction connector (for Bus 1)
M92-22 (CANL)	GR	No. 1 CAN junction connector (for Bus 1)

DLC3

(a) Disconnect the cable from the negative (-) battery terminal.

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

DLC3

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F41-6 (CANH) - F41-14 (CANL)	R - W	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
F41-6 (CANH) - F41-4 (CG)	R - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F41-14 (CANL) - F41-4 (CG)	W - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F41-6 (CANH) - F41-16 (BAT)	R - R	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F41-14 (CANL) - F41-16 (BAT)	W - R	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

Component without harness connected

(Central Gateway ECU (Network Gateway ECU))

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the F74 central gateway ECU (network gateway ECU) connector.

Front view of wire harness connector

(to Central Gateway ECU (Network Gateway ECU))

Standard Resistance:

Diagnosis Bus Branch Lines (DLC3 - Central gateway ECU (network gateway ECU))

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F74-14 (CA6H) - F74-5 (CA6L)	R - W	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	1 MΩ or higher
F74-14 (CA6H) - F74-10 (GND)	R - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F74-5 (CA6L) - F74-10 (GND)	W - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F74-14 (CA6H) - F74-1 (BATT)	R - Y	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F74-5 (CA6L) - F74-1 (BATT)	W - Y	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

Bus 1 Main Lines

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F74-23 (CA1H) - F74-9 (CAXH)	R - P	HIGH-level CAN bus line - HIGH-level CAN bus line	Cable disconnected from negative (-) battery terminal	Below 1 Ω
F74-8 (CA1L) - F74-24 (CAXL)	GR - GR	LOW-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	Below 1 Ω
F74-23 (CA1H) - F74-10 (GND)	R - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F74-8 (CA1L) - F74-10 (GND)	GR - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F74-23 (CA1H) - F74-1 (BATT)	R - Y	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F74-8 (CA1L) - F74-1 (BATT)	GR - Y	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

Bus 2 Main Lines

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F74-18 (CA4H) - F74-17 (CA4L)	R - P	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	108 to 132 Ω
F74-18 (CA4H) - F74-10 (GND)	R - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F74-17 (CA4L) - F74-10 (GND)	P - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F74-18 (CA4H) - F74-1 (BATT)	R - Y	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F74-17 (CA4L) - F74-1 (BATT)	P - Y	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

Bus 4 Main Lines

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F74-22 (CA2H) - F74-7 (CA2L)	B - W	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	108 to 132 Ω
F74-22 (CA2H) - F74-10 (GND)	B - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F74-7 (CA2L) - F74-10 (GND)	W - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F74-22 (CA2H) - F74-1 (BATT)	B - Y	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F74-7 (CA2L) - F74-1 (BATT)	W - Y	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

Bus 5 Main Lines

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F74-15 (CA5H) - F74-16 (CA5L)	B - SB	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	108 to 132 Ω
F74-15 (CA5H) - F74-10 (GND)	B - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F74-16 (CA5L) - F74-10 (GND)	SB - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F74-15 (CA5H) - F74-1 (BATT)	B - Y	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F74-16 (CA5L) - F74-1 (BATT)	SB - Y	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

STEERING SENSOR

Component without harness connected

(Steering Sensor)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the F69 steering sensor connector.

*a	Front view of wire harness connector (to Steering Sensor)

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F69-3 (CANH) - F69-2 (CANL)	BE - W	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
F69-3 (CANH) - F69-1 (ESS)	BE - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F69-2 (CANL) - F69-1 (ESS)	W - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F69-3 (CANH) - F69-5 (BAT)	BE - P	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F69-2 (CANL) - F69-5 (BAT)	W - P	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

ECM

Refer to Terminals of ECU.

w/ Canister Pump Module: Click here
w/o Canister Pump Module: Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the A38 and C63 ECM connectors.

Front view of wire harness connector

(to ECM)

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
A38-13 (CANH) - A38-26 (CANL)	R - P	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	108 to 132 Ω
A38-13 (CANH) - C63-59 (E1)	R - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
A38-26 (CANL) - C63-59 (E1)	P - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
A38-13 (CANH) - A38-1 (BATT)	R - R	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
A38-26 (CANL) - A38-1 (BATT)	P - R	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

COMBINATION METER ASSEMBLY

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the F4 combination meter assembly connector.

*a	Front view of wire harness connector (to Combination Meter Assembly)

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F4-32 (CANH) - F4-31 (CANL)	V - SB	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	108 to 132 Ω
F4-32 (CANH) - F4-21 (ET)	V - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F4-31 (CANL) - F4-21 (ET)	SB - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F4-32 (CANH) - F4-40 (B)	V - SB	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F4-31 (CANL) - F4-40 (B)	SB - SB	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

BRAKE ACTUATOR ASSEMBLY

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the A42 brake actuator assembly connector.

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
A42-5 (CANH) - A42-19 (CANL)	LG - W	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
A42-5 (CANH) - A42-46 (GND1)	LG - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
A42-19 (CANL) - A42-46 (GND1)	W - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
A42-5 (CANH) - A42-30 (+BS)	LG - W	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
A42-19 (CANL) - A42-30 (+BS)	W - W	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

*a	Front view of wire harness connector (to Brake Actuator Assembly)

MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the F15 main body ECU (multiplex network body ECU) connector.

DLC3

Front view of wire harness connector

(to Main Body ECU (Multiplex Network Body ECU))

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F15-14 (CANH) - F15-13 (CANL)	G - SB	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
F15-14 (CANH) - F41-4 (CG)	G - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F15-13 (CANL) - F41-4 (CG)	SB - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F15-14 (CANH) - F41-16 (BAT)	G - R	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F15-13 (CANL) - F41-16 (BAT)	SB - R	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Smart Key System)

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the F1 certification ECU (smart key ECU assembly) connector.

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F1-1 (CANH) - F1-2 (CANL)	R - SB	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
F1-1 (CANH) - F1-18 (E)	R - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F1-2 (CANL) - F1-18 (E)	SB - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F1-1 (CANH) - F1-4 (+B)	R - L	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F1-2 (CANL) - F1-4 (+B)	SB - L	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

*a	Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly))

POWER STEERING ECU ASSEMBLY

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the F23 and F68 power steering ECU assembly connectors.

*a	Front view of wire harness connector (to Power Steering ECU Assembly)

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F23-7 (CANH) - F23-8 (CANL)	P - W	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
F23-7 (CANH) - F68-2 (PGND)	P - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F23-8 (CANL) - F68-2 (PGND)	W - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F23-7 (CANH) - F68-1 (PIG)	P - B-W	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F23-8 (CANL) - F68-1 (PIG)	W - B-W	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

AIRBAG SENSOR ASSEMBLY

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the F70 airbag sensor assembly connector.

DLC3

Front view of wire harness connector

(to Airbag Sensor Assembly)

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F70-13 (CANH) - F70-22 (CANL)	B - W	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	108 to 132 Ω
F70-13 (CANH) - F70-25 (E1)	B - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F70-22 (CANL) - F70-25 (E1)	W - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F70-13 (CANH) - F41-16 (BAT)	B - R	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F70-22 (CANL) - F41-16 (BAT)	W - R	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

AIR CONDITIONING AMPLIFIER ASSEMBLY (w/ Top-mounted Air Conditioner Pressure Sensor)

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the F72 air conditioning amplifier assembly connector.

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F72-9 (CANH) - F72-10 (CANL)	P - SB	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
F72-9 (CANH) - F72-29 (GND)	P - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F72-10 (CANL) - F72-29 (GND)	SB - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F72-9 (CANH) - F72-1 (B)	P - V	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F72-10 (CANL) - F72-1 (B)	SB - V	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

*a	Front view of wire harness connector (to Air Conditioning Amplifier Assembly)

AIR CONDITIONING AMPLIFIER ASSEMBLY (w/ Side-mounted Air Conditioner Pressure Sensor)

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the F139 air conditioning amplifier assembly connector.

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F139-11 (CANH) - F139-12 (CANL)	P - SB	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
F139-11 (CANH) - F139-4 (GND)	P - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F139-12 (CANL) - F139-4 (GND)	SB - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F139-11 (CANH) - F139-1 (B)	P - V	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F139-12 (CANL) - F139-1 (B)	SB - V	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

*a	Front view of wire harness connector (to Air Conditioning Amplifier Assembly)

RADIO AND DISPLAY RECEIVER ASSEMBLY (for Radio and Display Type)

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the F129 and F131 radio and display receiver assembly connectors.

*a	Front view of wire harness connector (to Radio and Display Receiver Assembly)

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F131-13 (CANH) - F131-14 (CANL)	B - LG	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
F131-13 (CANH) - F129-1 (GND1)	B - LA	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F131-14 (CANL) - F129-1 (GND1)	LG - LA	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F131-13 (CANH) - F129-4 (+B1)	B - LA-SB	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F131-14 (CANL) - F129-4 (+B1)	LG - LA-SB	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

HEADLIGHT ECU SUB-ASSEMBLY LH (for LED Headlight)

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the A16 headlight ECU sub-assembly LH connector.

DLC3

Front view of wire harness connector

(to Headlight ECU Sub-assembly LH)

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
A16-24 (CANH) - A16-23 (CANL)	L - SB	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
A16-24 (CANH) - A16-12 (GND)	L - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
A16-23 (CANL) - A16-12 (GND)	SB - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
A16-24 (CANH) - F41-16 (BAT)	L - R	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
A16-23 (CANL) - F41-16 (BAT)	SB - R	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

BLIND SPOT MONITOR SENSOR LH (w/ Blind Spot Monitor System)

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the M62 blind spot monitor sensor LH connector.

DLC3

Front view of wire harness connector

(to Blind Spot Monitor Sensor LH)

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
M62-2 (CA1P) - M62-7 (CA1N)	G - GR	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
M62-2 (CA1P) - M62-10 (BLGD)	G - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
M62-7 (CA1N) - M62-10 (BLGD)	GR - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
M62-2 (CA1P) - F41-16 (BAT)	G - R	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
M62-7 (CA1N) - F41-16 (BAT)	GR - R	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

FORWARD RECOGNITION CAMERA (w/ Toyota Safety Sense P)

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the R5 forward recognition camera connector.

DLC3

Front view of wire harness connector

(to Forward Recognition Camera)

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
R5-5 (CA1P) - R5-11 (CA1N)	R - GR	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
R5-5 (CA1P) - R5-10 (GND)	R - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
R5-11 (CA1N) - R5-10 (GND)	GR - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
R5-5 (CA1P) - F41-16 (BAT)	R - R	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
R5-11 (CA1N) - F41-16 (BAT)	GR - R	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

MILLIMETER WAVE RADAR SENSOR ASSEMBLY (w/ Toyota Safety Sense P)

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the A2 millimeter wave radar sensor assembly connector.

DLC3

Front view of wire harness connector

(to Millimeter Wave Radar Sensor Assembly)

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
A2-3 (CA2H) - A2-2 (CA2L)	G - GR	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
A2-3 (CA2H) - A2-1 (SGND)	G - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
A2-2 (CA2L) - A2-1 (SGND)	GR - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
A2-3 (CA2H) - F41-16 (BAT)	G - R	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
A2-2 (CA2L) - F41-16 (BAT)	GR - R	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

OCCUPANT DETECTION ECU (w/ Occupant Detection ECU)

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the Y6 occupant detection ECU connector.

DLC3

Front view of wire harness connector

(to Occupant Detection ECU)

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
Y6-5 (CANH) - Y6-4 (CANL)	R - SB	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
Y6-5 (CANH) - Y6-10 (GND)	R - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
Y6-4 (CANL) - Y6-10 (GND)	SB - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
Y6-5 (CANH) - F41-16 (BAT)	R - R	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
Y6-4 (CANL) - F41-16 (BAT)	SB - R	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

DCM (TELEMATICS TRANSCEIVER) (w/ Telematics Transceiver)

Refer to Terminals of ECU.

Click here

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the F134 DCM (telematics transceiver) connector.

*a	Front view of wire harness connector (to DCM (Telematics Transceiver))

Standard Resistance:

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F134-15 (CANP) - F134-16 (CANN)	GR - LG	HIGH-level CAN bus line - LOW-level CAN bus line	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
F134-15 (CANP) - F134-4 (E)	GR - W-B	HIGH-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F134-16 (CANN) - F134-4 (E)	LG - W-B	LOW-level CAN bus line - Ground	Cable disconnected from negative (-) battery terminal	200 Ω or higher
F134-15 (CANP) - F134-1 (+B)	GR - W	HIGH-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
F134-16 (CANN) - F134-1 (+B)	LG - W	LOW-level CAN bus line - Battery positive (+)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. Inspect the fuses and relays related to this system before inspecting the suspect ...

Diagnosis System

DIAGNOSIS SYSTEM CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN COMMUNICATION (a) The systems (ECUs and sensors) that use CAN communication vary depending on the vehicle and optional ...

Other materials:

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Toyota CH-R Service Manual > Side Airbag Sensor(for Front Door): Installation
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Toyota CH-R Service Manual: Terminals Of Ecu

Problem Symptoms Table

Diagnosis System

Other materials:

Toyota CH-R Owners Manual

Toyota CH-R Service Manual