Note
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Click here.
Turn the power switch off before measuring the resistances between CAN main bus lines and between CAN branch lines.
Turn the power switch off before inspecting CAN bus lines for a ground short.
Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the power switch, any other switches or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.
This section describes the standard values for all CAN related components.
Tech Tips
Operating the power 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.
CAN NO. 1 JUNCTION CONNECTOR (for V Bus) (for LHD)
Check the CAN No. 1 junction connector (engine room main wire side).
Tech Tips
The following tables contain information about the items and buses connected via junction connectors. The junction connector may be used for multiple separate buses. In this case, the name of the bus will be shown below the name of the item that terminals are connected to. The bus name will be shown in brackets (example: (for Sub bus 12)).
Connection diagram
| *a | Front view of wire harness connector (to CAN No. 1 Junction Connector) |
*b | to ECM (for V bus) |
| *c | to Brake Booster with Master Cylinder Assembly (Skid Control ECU) (for V bus) |
*d | to Brake Booster with Master Cylinder Assembly (Skid Control ECU) (for Sub bus 12) |
| *e | to ECM (for Sub bus 12) |
- | - |
Check the connection diagram of the components which are connected to the CAN No. 1 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| A67-1 (CANH) | P | ECM (for V bus) |
| A67-7 (CANL) | V | |
| A67-2 (CANH) | LG | Brake booster with master cylinder assembly (Skid control ECU) (for V bus) |
| A67-8 (CANL) | L | |
| A67-3 (CANH) | P | Brake booster with master cylinder assembly (Skid control ECU) (for Sub bus 12) |
| A67-9 (CANL) | V | |
| A67-4 (CANH) | B | ECM (for Sub bus 12) |
| A67-10 (CANL) | W |
Check the CAN No. 1 junction connector (instrument panel wire side).
Connection diagram
| *a | Front view of wire harness connector (to CAN No. 1 Junction Connector) |
*b | to CAN No. 5 Junction Connector (for Sub bus 12) |
| *c | Main body ECU (Multiplex Network Body ECU) (for V bus) |
*d | to CAN No. 2 Junction Connector (for V bus) |
Check the connection diagram of the components which are connected to the CAN No. 1 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| L132-3 (CANH) | R | CAN No. 5 junction connector (for Sub bus 12) |
| L132-9 (CANL) | Y | |
| L132-5 (CANH) | SB | Main body ECU (Multiplex network body ECU) (for V bus) |
| L132-11 (CANL) | R | |
| L132-6 (CANH) | B | CAN No. 2 junction connector (for V bus) |
| L132-12 (CANL) | W |
CAN NO. 1 JUNCTION CONNECTOR (for V Bus) (for RHD)
Check the CAN No. 1 junction connector (engine room main wire side).
Tech Tips
The following tables contain information about the items and buses connected via junction connectors. The junction connector may be used for multiple separate buses. In this case, the name of the bus will be shown below the name of the item that terminals are connected to. The bus name will be shown in brackets (example: (for Sub bus 12)).
Connection diagram
| *a | Front view of wire harness connector (to CAN No. 1 Junction Connector) |
*b | to Brake Booster with Master Cylinder Assembly (Skid Control ECU) (for V bus) |
| *c | to Brake Booster with Master Cylinder Assembly (Skid Control ECU) (for Sub bus 12) |
*d | to ECM (for Sub bus 12) |
Check the connection diagram of the components which are connected to the CAN No. 1 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| A67-1 (CANH) | LG | Brake booster with master cylinder assembly (Skid control ECU) (for V bus) |
| A67-7 (CANL) | L | |
| A67-3 (CANH) | P | Brake booster with master cylinder assembly (Skid control ECU) (for Sub bus 12) |
| A67-9 (CANL) | V | |
| A67-4 (CANH) | B | ECM (for Sub bus 12) |
| A67-10 (CANL) | W |
Check the CAN No. 1 junction connector (instrument panel wire side).
Connection diagram
| *a | Front view of wire harness connector (to CAN No. 1 Junction Connector) |
*b | to CAN No. 5 Junction Connector (for Sub bus 12) |
| *c | to CAN No. 2 Junction Connector (for V bus) |
*d | Meter Circuit Plate (for V bus) |
Check the connection diagram of the components which are connected to the CAN No. 1 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| L132-3 (CANH) | R | CAN No. 5 junction connector (for Sub bus 12) |
| L132-9 (CANL) | Y | |
| L132-5 (CANH) | GR | CAN No. 2 junction connector (for V bus) |
| L132-11 (CANL) | W | |
| L132-6 (CANH) | SB | Meter circuit plate (for V bus) |
| L132-12 (CANL) | G |
CAN NO. 2 JUNCTION CONNECTOR (for V Bus) (for LHD)
Check the CAN No. 2 junction connector (instrument panel connector holder left side).
Connection diagram
| *a | Front view of wire harness connector (to CAN No. 2 Junction Connector) |
*b | to CAN No. 3 Junction Connector (for V bus) |
| *c | to CAN No. 1 Junction Connector (for V bus) |
*d | to Certification ECU (Smart Key ECU Assembly) |
| *e | to Spiral Cable with Sensor Sub-assembly (Steering Angle Sensor) |
- | - |
Check the connection diagram of the components which are connected to the CAN No. 2 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| L94-2 (CANH) | GR | CAN No. 3 junction connector (for V bus) |
| L94-1 (CANL) | W | |
| L94-5 (CANH) | B | CAN No. 1 junction connector (for V bus) |
| L94-4 (CANL) | W | |
| L94-8 (CANH) | B | Certification ECU (Smart key ECU assembly) |
| L94-7 (CANL) | W | |
| L94-11 (CANH) | B | Spiral cable with sensor sub-assembly (Steering angle sensor) |
| L94-10 (CANL) | W |
Check the CAN No. 2 junction connector (instrument panel connector holder right side).
Connection diagram
| *a | Front view of wire harness connector (to CAN No. 2 Junction Connector) |
*b | to Power Steering ECU Assembly |
| *c | to Yaw Rate Sensor | *d | to Airbag ECU Assembly |
| *e | to Navigation ECU Sub-assembly*1 to Radio and Display Receiver Assembly*2 |
*f | to DLC3 |
Check the connection diagram of the components which are connected to the CAN No. 2 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| L95-2 (CANH) | R | Power steering ECU assembly |
| L95-3 (CANL) | W | |
| L95-5 (CANH) | B | Yaw rate sensor |
| L95-6 (CANL) | W | |
| L95-8 (CANH) | B | Airbag ECU assembly |
| L95-9 (CANL) | W | |
| L95-11 (CANH) | B |
|
| L95-12 (CANL) | W | |
| L95-14 (CANH) | B | DLC3 |
| L95-15 (CANL) | W |
*1: for Navigation receiver type
*2: for Radio and display type
CAN NO. 2 JUNCTION CONNECTOR (for V Bus) (for RHD)
Check the CAN No. 2 junction connector (instrument panel connector holder left side).
Connection diagram
| *a | Front view of wire harness connector (to CAN No. 2 Junction Connector) |
*b | to CAN No. 1 Junction Connector (for V bus) |
| *c | to CAN No. 3 Junction Connector (for V bus) |
*d | to Certification ECU (Smart Key ECU Assembly) |
| *e | to Spiral Cable with Sensor Sub-assembly (Steering Angle Sensor) |
- | - |
Check the connection diagram of the components which are connected to the CAN No. 2 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| L94-1 (CANH) | GR | CAN No. 1 junction connector (for V bus) |
| L94-2 (CANL) | W | |
| L94-4 (CANH) | B | CAN No. 3 junction connector (for V bus) |
| L94-5 (CANL) | W | |
| L94-7 (CANH) | B | Certification ECU (Smart key ECU assembly) |
| L94-8 (CANL) | W | |
| L94-10 (CANH) | B | Spiral cable with sensor sub-assembly (Steering angle sensor) |
| L94-11 (CANL) | W |
Check the CAN No. 2 junction connector (instrument panel connector holder right side).
Connection diagram
| *a | Front view of wire harness connector (to CAN No. 2 Junction Connector) |
*b | to Power Steering ECU Assembly |
| *c | to Yaw Rate Sensor | *d | to Airbag ECU Assembly |
| *e | to Navigation ECU Sub-assembly*1 to Radio and Display Receiver Assembly*2 |
*f | to DLC3 |
Check the connection diagram of the components which are connected to the CAN No. 2 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| L95-3 (CANH) | R | Power steering ECU assembly |
| L95-2 (CANL) | W | |
| L95-6 (CANH) | B | Yaw rate sensor |
| L95-5 (CANL) | W | |
| L95-9 (CANH) | B | Airbag ECU assembly |
| L95-8 (CANL) | W | |
| L95-12 (CANH) | B |
|
| L95-11 (CANL) | W | |
| L95-15 (CANH) | B | DLC3 |
| L95-14 (CANL) | W |
*1: for Navigation receiver type
*2: for Radio and display type
CAN NO. 3 JUNCTION CONNECTOR (for V Bus) (for LHD)
Check the CAN No. 3 junction connector (engine room main wire side).
Connection diagram
| *a | Front view of wire harness connector (to CAN No. 3 Junction Connector) |
*b | to Transmission Control ECU Assembly |
Check the connection diagram of the components which are connected to the CAN No. 3 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| A68-1 (CANH) | Y | Transmission control ECU assembly |
| A68-7 (CANL) | BR |
Check the CAN No. 3 junction connector (instrument panel wire side).
Connection diagram
| *a | Front view of wire harness connector (to CAN No. 3 Junction Connector) |
*b | to Power Management Control ECU |
| *c | to CAN No. 2 Junction Connector | *d | to Meter Circuit Plate |
Check the connection diagram of the components which are connected to the CAN No. 3 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| L133-4 (CANH) | V | Power management control ECU |
| L133-10 (CANL) | P | |
| L133-5 (CANH) | GR | CAN No. 2 junction connector |
| L133-11 (CANL) | W | |
| L133-6 (CANH) | SB | Meter circuit plate |
| L133-12 (CANL) | G |
CAN NO. 3 JUNCTION CONNECTOR (for V Bus) (for RHD)
Check the CAN No. 3 junction connector (engine room main wire side).
Connection diagram
| *a | Front view of wire harness connector (to CAN No. 3 Junction Connector) |
*b | ECM |
| *c | to Transmission Control ECU Assembly | - | - |
Check the connection diagram of the components which are connected to the CAN No. 3 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| A68-1 (CANH) | P | ECM |
| A68-7 (CANL) | V | |
| A68-2 (CANH) | Y | Transmission control ECU assembly |
| A68-8 (CANL) | BR |
Check the CAN No. 3 junction connector (instrument panel wire side).
Connection diagram
| *a | Front view of wire harness connector (to CAN No. 3 Junction Connector) |
*b | to Power Management Control ECU |
| *c | to Main body ECU (Multiplex Network Body ECU) |
*d | to CAN No. 2 Junction Connector |
Check the connection diagram of the components which are connected to the CAN No. 3 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| L133-4 (CANH) | V | Power management control ECU |
| L133-10 (CANL) | P | |
| L133-5 (CANH) | SB | Main body ECU (Multiplex network body ECU) |
| L133-11 (CANL) | R | |
| L133-6 (CANH) | B | CAN No. 2 junction connector |
| L133-12 (CANL) | W |
CAN NO. 4 JUNCTION CONNECTOR (for Sub Bus 11)
Check the CAN No. 4 junction connector.
Tech Tips
Connectors that connect to the CAN junction connector can be distinguished by color of their CAN bus lines. When the connectors have been disconnected from the CAN junction connector, reconnecting the connectors to non-original positions on the CAN junction connector does not affect system performance. However, it is preferred to reconnect the connectors to their original positions to avoid negative effects on the wiring such as tension on the wiring harnesses, and to make future maintenance easier.
Connection diagram
| *1 | CAN No. 4 Junction Connector | - | - |
| *a | Junction Connector A Side | *b | Junction Connector B Side |
| *c | Earth Terminal | *d | Front view of wire harness connector (to CAN No. 4 Junction Connector) |
Check the connection diagram of the components which are connected to the CAN No. 4 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| L99-1 (CANH) | B | Parking assist ECU*1 |
| L99-2 (CANL) | L | |
| L100-1 (CANH) | B | Power management control ECU (for Sub bus 11) |
| L100-2 (CANL) | W |
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| L96-1 (GND) | W-B | Body ground |
| L97-1 (CANH) | B | Seat belt control ECU*2 |
| L97-2 (CANL) | G | |
| L98-1 (CANH) | B | Driving support ECU assembly*3 |
| L98-2 (CANL) | R |
*1: w/ Intelligent parking assist system
*2: w/ Pre-crash safety system
*3: w/ Dynamic radar cruise control system
CAN NO. 5 JUNCTION CONNECTOR (for Sub Bus 12)
Check the CAN No. 5 junction connector (instrument panel connector holder left side).
Connection diagram
| *a | Front view of wire harness connector (to CAN No. 5 Junction Connector) |
*b | to Air Conditioning Amplifier Assembly |
| *c | to CAN No. 1 Junction Connector (for Sub bus 12) |
- | - |
Check the connection diagram of the components which are connected to the CAN No. 5 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| L101-1 (CANH) | B | Air conditioning amplifier assembly |
| L101-3 (CANL) | W | |
| L101-2 (CANH) | R | CAN No. 1 junction connector (for Sub bus 12) |
| L101-4 (CANL) | Y |
Check the CAN No. 5 junction connector (instrument panel connector holder right side).
Connection diagram
| *a | Front view of wire harness connector (to CAN No. 5 Junction Connector) |
*b | to Power Management Control ECU (for Sub bus 12) |
Check the connection diagram of the components which are connected to the CAN No. 5 junction connector.
| Terminal No. (Symbol) | Wiring Color | Connected to |
|---|---|---|
| L102-5 (CANH) | B | Power management control ECU (for Sub bus 12) |
| L102-3 (CANL) | W |
DLC3
Measure the resistance according to the value(s) in the table below.
| *1 | DLC3 | - | - |
POWER MANAGEMENT CONTROL ECU
| *a | Component without harness connected (Power Management Control ECU) |
- | - |
Sub Bus 11 Main Lines
| *a | Rear view of wire harness connector (to Power Management Control ECU) |
Disconnect the power management control ECU connector.
Measure the resistance according to the value(s) in the table below.
V Bus Branch Lines and Sub Bus 12 Main Lines
| *a | Rear view of wire harness connector (to Power Management Control ECU) |
Disconnect the power management control ECU connector.
Measure the resistance according to the value(s) in the table below.
ECM
| *a | Component without harness connected (ECM) |
- | - |
Disconnect the ECM connectors.
| *a | Front view of wire harness connector (to ECM) |
- | - |
Measure the resistance according to the value(s) in the table below.
TRANSMISSION CONTROL ECU ASSEMBLY
| *a | Component without harness connected (Transmission Control ECU Assembly) |
- | - |
| *a | Front view of wire harness connector (to Transmission Control ECU Assembly) |
Disconnect the transmission control ECU assembly connectors.
Measure the resistance according to the value(s) in the table below.
BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SKID CONTROL ECU)
| *a | Front view of wire harness connector (to Brake Booster with Master Cylinder Assembly) |
Disconnect the brake booster with master cylinder assembly (skid control ECU) connector.
Measure the resistance according to the value(s) in the table below.
AIRBAG ECU ASSEMBLY
| *a | Component without harness connected (Airbag ECU Assembly) |
- | - |
Disconnect the airbag ECU assembly connector.
| *1 | DLC3 | - | - |
| *a | Front view of wire harness connector (to Airbag ECU Assembly) |
- | - |
Measure the resistance according to the value(s) in the table below.
INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
| *A | for LHD | *B | for RHD |
| *1 | Main Body ECU (Multiplex Network Body ECU) | *2 | 1 connector |
| *a | Component without harness connected (Instrument Panel Junction Block Assembly and Main Body ECU (Multiplex Network Body ECU) with 1 connector) |
- | - |
| *A | for LHD | *B | for RHD |
| *1 | Main Body ECU (Multiplex Network Body ECU) | *2 | 3 connectors |
| *a | Component without harness connected (Instrument Panel Junction Block Assembly and Main Body ECU (Multiplex Network Body ECU) with 3 connectors) |
- | - |
Disconnect the main body ECU (multiplex network body ECU) connectors.
| *1 | DLC3 | - | - |
| *a | Front view of wire harness connector (to Main Body ECU (Multiplex Network Body ECU)) |
- | - |
Measure the resistance according to the value(s) in the table below.
SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY (STEERING ANGLE SENSOR)
| *a | Front view of wire harness connector (to Spiral Cable with Sensor Sub-assembly) |
Disconnect the spiral cable with sensor sub-assembly connector.
Measure the resistance according to the value(s) in the table below.
YAW RATE SENSOR
| *1 | DLC3 |
| *a | Front view of wire harness connector (to Yaw Rate Sensor) |
Disconnect the yaw rate sensor connector.
Measure the resistance according to the value(s) in the table below.
POWER STEERING ECU ASSEMBLY
| *a | Component without harness connected (Power Steering ECU Assembly) |
- | - |
Disconnect the power steering ECU assembly connectors.
| *a | Front view of wire harness connector (to Power Steering ECU Assembly) |
- | - |
Measure the resistance according to the value(s) in the table below.
CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
| *a | Component without harness connected (Certification ECU (Smart Key ECU Assembly)) |
- | - |
Disconnect the certification ECU (smart key ECU assembly) connector.
| *a | Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly)) |
- | - |
Measure the resistance according to the value(s) in the table below.
RADIO AND DISPLAY RECEIVER ASSEMBLY (for Radio and Display Type)
| *a | Component without harness connected (Radio and Display Receiver Assembly (for Radio and Display Type) |
- | - |
Disconnect the radio and display receiver assembly connectors.
| *a | Front view of wire harness connector (to Radio and Display Receiver Assembly) |
- | - |
Measure the resistance according to the value(s) in the table below.
NAVIGATION ECU SUB-ASSEMBLY (for Navigation Receiver Type)
| *a | Component without harness connected (Navigation ECU Sub-assembly) |
- | - |
Disconnect the navigation ECU sub-assembly connectors.
| *a | Front view of wire harness connector (to Navigation ECU Sub-assembly) |
- | - |
Measure the resistance according to the value(s) in the table below.
METER CIRCUIT PLATE
| *a | Component without harness connected (Meter Circuit Plate) |
- | - |
Disconnect the meter circuit plate connector.
| *a | Front view of wire harness connector (to Meter Circuit Plate) |
- | - |
Measure the resistance according to the value(s) in the table below.
AIR CONDITIONING AMPLIFIER ASSEMBLY
| *a | Component without harness connected (Air Conditioning Amplifier Assembly) |
- | - |
Disconnect the air conditioning amplifier assembly connector.
| *a | Front view of wire harness connector (to Air Conditioning Amplifier Assembly) |
- | - |
Measure the resistance according to the value(s) in the table below.
DRIVING SUPPORT ECU ASSEMBLY (w/ Dynamic Radar Cruise Control System)
| *a | Component without harness connected (Driving Support ECU Assembly) |
- | - |
| *a | Front view of wire harness connector (to Driving Support ECU Assembly) |
Disconnect the driving support ECU assembly connector.
Measure the resistance according to the value(s) in the table below.
SEAT BELT CONTROL ECU (w/ Pre-crash Safety System)
| *a | Component without harness connected (Seat Belt Control ECU) |
- | - |
| *a | Front view of wire harness connector (to Seat Belt Control ECU) |
Disconnect the seat belt control ECU connectors.
Measure the resistance according to the value(s) in the table below.
PARKING ASSIST ECU (w/ Intelligent Parking Assist System)
| *a | Component without harness connected (Parking Assist ECU) |
- | - |
| *a | Front view of wire harness connector (to Parking Assist ECU) |
Disconnect the parking assist ECU connectors.
Measure the resistance according to the value(s) in the table below.