CAN Communication System (Diagnostics - Introduction) (Base): Other Toyota Prius Plug-in

TERMINALS OF ECU

Note. Turn the power switch off before measuring the resistances between CAN bus main wires and between CAN bus branch wires. Turn the power switch off before inspecting CAN bus wires for a ground short. After the power switch is turned off, check that the key reminder warning system and light reminder warning system are not operating. 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 information describes the standard CAN values for all CAN related components.

HINT

1. 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.
2. 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.

Scheme 26

Scheme 27

Scheme 28

Scheme 29

Scheme 30

Scheme 31

Scheme 32

Scheme 33

Scheme 34

Scheme 35

Scheme 36

Scheme 37

Scheme 38

Scheme 39

Scheme 40

Scheme 41

Scheme 42

Scheme 43

Scheme 44

Scheme 45

Scheme 46

Scheme 47

Scheme 48

Scheme 49

Scheme 50

Scheme 51

Scheme 52

Scheme 53

Scheme 54

Scheme 55

Scheme 56

Scheme 57

Scheme 58

1. CAN NO. 1 JUNCTION CONNECTOR Check the CAN No. 1 junction connector. Connection diagram TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 1 Junction Connector) *2 to Combination Meter *3 to Steering Angle Sensor *4 to Main Body ECU *5 to Power Steering ECU *6 to DLC3 *7 to Navigation ECU Sub-assembly*1*2 to Radio and Display Receiver Assembly*2 *8 to CAN No. 2 Junction Connector *9 to Yaw Rate Sensor *10 to Certification ECU *11 to Skid Control ECU - - *1: for Navigation receiver type *2: for Radio and display type Check the connection diagram of the components which are connected to the CAN No. 1 junction connector. Terminal No. (Symbol) Wiring Color Connected to L94-1 (CANH) P Combination meter L94-12 (CANL) W L94-2 (CANH) L Steering angle sensor L94-13 (CANL) W L94-3 (CANH) BR Main body ECU L94-14 (CANL) W L94-4 (CANH) R Power steering ECU L94-15 (CANL) W L94-5 (CANH) W DLC3 L94-16 (CANL) Y L94-6 (CANH) G Navigation ECU Sub-assembly*1*2 Radio and display receiver assembly*2 L94-17 (CANL) W L94-7 (CANH) V CAN No. 2 junction connector L94-18 (CANL) W L94-8 (CANH) Y Yaw rate sensor L94-19 (CANL) L L94-9 (CANH) BE Certification ECU L94-20 (CANL) P L94-10 (CANH) LG Skid Control ECU L94-21 (CANL) L *1: for Navigation receiver type *2: for Radio and display type
2. CAN NO. 2 JUNCTION CONNECTOR Check the CAN No. 2 junction connector. Connection diagram TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 2 Junction Connector) *2 to CAN No. 1 Junction Connector *3 to Center Airbag Sensor Assembly *4 to Transmission Control ECU *5 to Power Management Control ECU *6 to ECM 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) V CAN No. 1 junction connector L95-14 (CANL) W L95-5 (CANH) R Center airbag sensor assembly L95-16 (CANL) G L95-7 (CANH) Y Transmission control ECU L95-18 (CANL) BR L95-8 (CANH) B Power management control ECU L95-19 (CANL) W L95-9 (CANH) P ECM L95-20 (CANL) V
3. CAN NO. 3 JUNCTION CONNECTOR Check the CAN No. 3 junction connector. Connection diagram TEXT IN ILLUSTRATION *1 CAN No. 3 Junction Connector *2 Junction Connector B Side *3 Junction Connector A Side *4 Earth Terminal *5 Front view of wire harness connector (to CAN No. 3 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 L97-1 (CANH) P Power management control ECU L97-2 (CANL) V L98-1 (CANH) LG Seat belt control ECU L98-2 (CANL) L L99-1 (CANH) B Driving support ECU L99-2 (CANL) W
4. CAN NO. 4 JUNCTION CONNECTOR Check the CAN No. 4 junction connector. Connection diagram TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 4 Junction Connector) *2 to Power Management Control ECU *3 to Air Conditioning Amplifier *4 to Skid Control ECU *5 to ECM - - Check the connection diagram of the components which are connected to the CAN No. 4 junction connector. Terminal No. (Symbol) Wiring Color Connected to L101-12 (CANH) LG Power management control ECU L101-1 (CANL) L L101-13 (CANH) Y Air conditioning amplifier L101-2 (CANL) BR L101-14 (CANH) P Skid control ECU L101-3 (CANL) V L101-15 (CANH) B ECM L101-4 (CANL) W
5. CAN NO. 5 JUNCTION CONNECTOR Check the CAN No. 5 junction connector. Connection diagram TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to CAN No. 5 Junction Connector) *2 to Millimeter Wave Radar Sensor *3 to Lane Recognition Camera Sensor *4 to Driving Support ECU Check the connection diagram of the components which are connected to the CAN No. 5 junction connector. Terminal No. (Symbol) Wiring Color Connected to L102-1 (CANH) LG Millimeter wave radar sensor L102-12 (CANL) P L102-2 (CANH) B Lane recognition camera sensor L102-13 (CANL) W L102-3 (CANH) Y Driving support ECU L102-14 (CANL) L
6. DLC3 Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L61-6 (CANH) - L61-14 (CANL) W - Y HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms L61-6 (CANH) - L61-4 (CG) W - G HIGH-level CAN bus line - Chassis ground Power switch off 200 ohms or higher L61-14 (CANL) - L61-4 (CG) Y - G LOW-level CAN bus line - Chassis ground Power switch off 200 ohms or higher L61-6 (CANH) - L61-16 (BAT) W - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L61-14 (CANL) - L61-16 (BAT) Y - R LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher TEXT IN ILLUSTRATION *1 DLC3
7. ECM Disconnect the ECM connectors. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) Measure the resistance according to the value(s) in the table below. Standard Resistance FOR CAN NO. 1 BUS MAIN WIRE Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A57-13 (CANH) - A57-5 (CANL) P - V HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 108 to 132 ohms A57-13 (CANH) - D28-104 (E1) P - BR HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher A57-5 (CANL) - D28-104 (E1) V - BR LOW-level CAN bus line - Ground Power switch off 200 ohms or higher A57-13 (CANH) - A57-20 (BATT) P - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A57-5 (CANL) - A57-20 (BATT) V - R LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher FOR POWER MANAGEMENT BUS MAIN WIRE Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A57-12 (CANP) - A57-4 (CANN) B - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 108 to 132 ohms A57-12 (CANP) - D28-104 (E1) B - BR HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher A57-4 (CANN) - D28-104 (E1) W - BR LOW-level CAN bus line - Ground Power switch off 200 ohms or higher A57-12 (CANP) - A57-20 (BATT) B - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A57-4 (CANN) - A57-20 (BATT) W - R LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
8. COMBINATION METER Disconnect the combination meter connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Combination Meter) Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L27-10 (CANH) - L27-11 (CANL) P - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 108 to 132 ohms L27-10 (CANH) - L27-30 (ES) P - BR HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L27-11 (CANL) - L27-30 (ES) W - BR LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L27-10 (CANH) - L27-18 (B) P - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L27-11 (CANL) - L27-18 (B) W - R LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
9. POWER MANAGEMENT CONTROL ECU CAN No. 1 Bus Branch Wire Disconnect the power management control ECU connector. TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to Power Management Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance FOR CAN NO. 1 BUS BRANCH WIRE Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L6-25 (CA1H) - L6-24 (CA1L) B - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms L6-25 (CA1H) - L6-5 (E02) B - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L6-24 (CA1L) - L6-5 (E02) W - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L6-25 (CA1H) - L6-7 (AM21) B - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L6-24 (CA1L) - L6-7 (AM21) W - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher CAN No. 2 Bus Main Wire Disconnect the power management control ECU connector. TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to Power Management Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance FOR CAN NO. 2 BUS MAIN WIRE Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L5-34 (CA2H) - L5-35 (CA2L) P - V HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 108 to 132 ohms L5-34 (CA2H) - L5-6 (E1) P - BR HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L5-35 (CA2L) - L5-6 (E1) V - BR LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L5-34 (CA2H) - L5-1 (AM22) P - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L5-35 (CA2L) - L5-1 (AM22) V - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher Power Management Bus Main Wire Disconnect the power management control ECU connector. TEXT IN ILLUSTRATION *1 Rear view of wire harness connector (to Power Management Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance FOR POWER MANAGEMENT BUS MAIN WIRE Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L6-31 (CA3P) -L6-30 (CA3N) LG - L HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 108 to 132 ohms L6-31 (CA3P) - L6-5 (E02) LG - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L6-30 (CA3N) - L6-5 (E02) L - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L6-31 (CA3P) - L6-7 (AM21) LG - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L6-30 (CA3N) - L6-7 (AM21) L - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
10. MAIN BODY ECU TEXT IN ILLUSTRATION *1 Instrument Panel Junction Block and Main Body ECU (except Korea, w/o LED Headlight System and w/o Remote Air Conditioning System) TEXT IN ILLUSTRATION *2 Instrument Panel Junction Block and Main Body ECU (for Korea, w/ LED Headlight System or w/ Remote Air Conditioning System) Disconnect the main body ECU connector. TEXT IN ILLUSTRATION *3 Front view of wire harness connector (to Main Body ECU) *4 DLC3 Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L7-14 (CANH) - L7-13 (CANL) BR - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms L7-14 (CANH) - L61-4 (CG) BR - G HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L7-13 (CANL) - L61-4 (CG) W - G LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L7-14 (CANH) - L61-16 (BAT) BR - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L7-13 (CANL) - L61-16 (BAT) W - R LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
11. SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER) Disconnect the skid control ECU (brake booster with master cylinder) connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Skid Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance FOR CAN NO. 1 BUS BRANCH WIRE Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A58-37 (CA1H) - A58-38 (CA1L) LG - L HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms A58-37 (CA1H) - A58-28 (GND) LG - W HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher A58-38 (CA1L) - A58-28 (GND) L - W LOW-level CAN bus line - Ground Power switch off 200 ohms or higher A58-37 (CA1H) - A58-15 (BS) LG - B HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A58-38 (CA1L) - A58-15 (BS) L - B LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher FOR POWER MANAGEMENT BUS BRANCH WIRE Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A58-35 (CA2H) - A58-34 (CA2L) P - V HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms A58-35 (CA2H) - A58-28 (GND) P - W HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher A58-34 (CA2L) - A58-28 (GND) V - W LOW-level CAN bus line - Ground Power switch off 200 ohms or higher A58-35 (CA2H) - A58-15 (BS) P - B HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A58-34 (CA2L) - A58-15 (BS) V - B LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
12. STEERING ANGLE SENSOR Disconnect the steering angle sensor connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Steering Angle Sensor) Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L51-4 (CANH) - L51-3 (CANL) L - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms L51-4 (CANH) - L51-2 (ESS) L - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L51-3 (CANL) - L51-2 (ESS) W - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L51-4 (CANH) - L51-6 (BAT) L - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L51-3 (CANL) - L51-6 (BAT) W - R LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
13. YAW RATE SENSOR Disconnect the yaw rate sensor connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Yaw Rate Sensor) *2 DLC3 Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L12-3 (CANH) - L12-2 (CANL) Y - L HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms L12-3 (CANH) - L12-1 (GND) Y - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L12-2 (CANL) - L12-1 (GND) L - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L12-3 (CANH) - L61-16 (BAT) Y - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L12-2 (CANL) - L61-16 (BAT) L - R LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
14. POWER STEERING ECU Disconnect the power steering ECU connectors. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Power Steering ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L54-1 (CANH) - L54-7 (CANL) R - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms L54-1 (CANH) - A27-2 (PGND) R - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L54-7 (CANL) - A27-2 (PGND) W - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L54-1 (CANH) - A27-1 (PIG) R - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L54-7 (CANL) - A27-1 (PIG) W - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
15. CENTER AIRBAG SENSOR ASSEMBLY Disconnect the center airbag sensor assembly connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Center Airbag Sensor Assembly) *2 DLC3 Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L16-13 (CANH) - L16-22 (CANL) R - G HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms L16-13 (CANH) - L16-25 (E1) R - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L16-22 (CANL) - L16-25 (E1) G - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L16-13 (CANH) - L61-16 (BAT) R - R CAN communication line H - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L16-22 (CANL) - L61-16 (BAT) G - R CAN communication line L - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
16. CERTIFICATION ECU (SMART KEY ECU) Disconnect the certification ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Certification ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L62-9 (CANH) - L62-10 (CANL) BE - P HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms L62-9 (CANH) - L62-15 (E) BE - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L62-10 (CANL) - L62-15 (E) P - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L62-9 (CANH) - L62-1 (+B) BE - B HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L62-10 (CANL) - L62-1 (+B) P - B LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
17. TRANSMISSION CONTROL ECU Disconnect the transmission control ECU connectors. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Transmission Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A24-16 (CA1H) - A24-15 (CA1L) Y - BR HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms A24-16 (CA1H) - A24-1 (E1) Y - BR HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher A24-15 (CA1L) - A24-1 (E1) BR - BR LOW-level CAN bus line - Ground Power switch off 200 ohms or higher A24-16 (CA1H) - A23-15 (BATT) Y - SB HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A24-15 (CA1L) - A23-15 (BATT) BR - SB LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
18. RADIO AND DISPLAY RECEIVER ASSEMBLY (for Radio and Display Type) TEXT IN ILLUSTRATION *1 for 6 Speakers *2 for 8 Speakers *3 w/ Navigation System - - Disconnect the radio and display receiver assembly connectors. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Radio and Display Receiver Assembly) *2 for 6 Speakers *3 for 8 Speakers - - Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L149-9 (CANH) - L149-10 (CANL)*1 L149-9 (CANH) - L149-10 (CANL)*2 G - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms L149-9 (CANH) - L146-7 (GND1)*1 L149-9 (CANH) - L138-20 (GND1)*2 G - BR HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L149-10 (CANL) - L146-7 (GND1)*1 L149-10 (CANL) - L138-20 (GND1)*2 W - BR LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L149-9 (CANH) - L148-4 (+B1)*1 L149-9 (CANH) - L138-1 (+B1)*2 G - SB HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L149-10 (CANL) - L148-4 (+B1)*1 L149-10 (CANL) - L138-1 (+B1)*2 W - SB LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher *1: for 6 Speakers *2: for 8 Speakers
19. NAVIGATION ECU SUB-ASSEMBLY (for Navigation Receiver Type) Disconnect the navigation ECU sub-assembly connectors. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Navigation ECU Sub-assembly) Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L130-9 (CANH) - L130-10 (CANL) G - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms L130-9 (CANH) - L127-7 (GND1) G - BR HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L130-10 (CANL) - L127-7 (GND1) W - BR LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L130-9 (CANH) - L127-4 (+B1) G - SB HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L130-10 (CANL) - L127-4 (+B1) W - SB LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
20. NAVIGATION ECU SUB-ASSEMBLY (for Radio and Display Type) Disconnect the navigation ECU sub-assembly connectors. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Navigation ECU Sub-assembly) Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L130-9 (CANH) - L130-10 (CANL) G - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms L130-9 (CANH) - L127-7 (GND1) G - BR HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L130-10 (CANL) - L127-7 (GND1) W - BR LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L130-9 (CANH) - L127-4 (+B1) G - SB HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L130-10 (CANL) - L127-4 (+B1) W - SB LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
21. AIR CONDITIONING AMPLIFIER Disconnect the air conditioning amplifier connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Air Conditioning Amplifier) Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L17-11 (CANH) - L17-12 (CANL) Y - BR HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms L17-11 (CANH) - L17-14 (GND) Y - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L17-12 (CANL) - L17-14 (GND) BR - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L17-11 (CANH) - L17-21 (B) Y - Y HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L17-12 (CANL) - L17-21 (B) BR - Y LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
22. SEAT BELT CONTROL ECU (w/ Pre-collision System) Disconnect the seat belt control ECU connectors. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Seat Belt Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L3-1 (CANH) - L3-2 (CANL) LG - L HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms L3-1 (CANH) - L2-8 (PGND) LG - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L3-2 (CANL) - L2-8 (PGND) L - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L3-1 (CANH) - L2-7 (+B) LG - B HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L3-2 (CANL) - L2-7 (+B) L - B LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
23. DRIVING SUPPORT ECU (w/ Dynamic Radar Cruise Control System) Disconnect the driving support ECU connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Driving Support ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance CAN NO. 2 BUS BRANCH WIRE Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L60-39 (CA2H) - L60-17 (CA2L) B - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms L60-39 (CA2H) - L60-25 (GND) B - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L60-17 (CA2L) - L60-25 (GND) W - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L60-39 (CA2H) - L60-30 (B) B - B HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L60-17 (CA2L) - L60-30 (B) W - B LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher Standard Resistance PARKING ASSIST BUS MAIN WIRE Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L60-40 (CA1P) - L60-18 (CA1N) Y - L HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 108 to 132 ohms L60-40 (CA1P) - L60-25 (GND) Y - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher L60-18 (CA1N) - L60-25 (GND) L - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher L60-40 (CA1P) - L60-30 (B) Y - B HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher L60-18 (CA1N) - L60-30 (B) L - B LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
24. MILLIMETER WAVE RADAR SENSOR (w/ Dynamic Radar Cruise Control System) Disconnect the millimeter wave radar sensor connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Millimeter Wave Radar Sensor) *2 DLC3 Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A2-4 (CA1P) - A2-3 (CA1N) LG - P HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 108 to 132 ohms A2-4 (CA1P)- L61-4 (CG) LG - G HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher A2-3 (CA1N) - L61-4 (CG) P - G LOW-level CAN bus line - Ground Power switch off 200 ohms or higher A2-4 (CA1P) - L61-16 (BAT) LG - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A2-3 (CA1N) - L61-16 (BAT) P - R LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
25. LANE RECOGNITION CAMERA SENSOR (w/ Lane-keeping Assist System) Disconnect the lane recognition camera sensor connector. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Lane Recognition Camera Sensor) *2 DLC3 Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition U4-1 (CA1P) - U4-2 (CA1N) B - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms U4-1 (CA1P)- L61-4 (CG) B - G HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher U4-2 (CA1N) - L61-4 (CG) W - G LOW-level CAN bus line - Ground Power switch off 200 ohms or higher U4-1 (CA1P) - L61-16 (BAT) B - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher U4-2 (CA1N) - L61-16 (BAT) W - R LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher

FAIL-SAFE CHART

1. FAIL-SAFE FUNCTION When communication fails in any of the CAN bus wires (communication wires), a fail-safe function(s) will operate. The fail-safe function that is specified for each system operates to prevent those systems from malfunctioning. The following table shows the effects on each system when communication is impossible. (For further details, see information for each system.) Function (Function Description) Control Master System Related Fail-safe Operation DTC (Driver Detectable) Power switch (Power source control) Power management control ECU Transmission control ECU Skid control ECU Main body ECU Power switch does not change to on (READY) even when power switch is pressed with the brake pedal depressed Power switch off is prohibited U0129 U0293 (Warning and indicator lights come on) Hybrid driving control Power management control ECU ECM Only motor operation is used (Engine is not used) U0100 (Warning and indicator lights come on) Shift position indicator display Transmission control ECU Power management control ECU Main body ECU Combination meter Shift position indicator is not displayed U0146 (Warning and indicator lights come on) Regenerative braking control Power management control ECU Skid control ECU Regenerative braking will stop (ABS/VSC control gradually stops) U0073 U0129 U0293 (Warning and indicator lights come on) VSC control (Controls driving force while VSC operating) Skid control ECU Power management control ECU Yaw rate sensor Steering angle sensor ABS/VSC control is inoperative (ABS/VSC control gradually stops) U0073 U0123 U0124 U0126 U0293 (Warning and indicator lights come on) ABS control (Controls driving force while ABS operating) Skid control ECU Yaw rate sensor ABS control is inoperative (ABS control gradually stops) U0073 U0123 U0124 (Warning and indicator lights come on) TRAC control (Engine power control by VSC/TRAC) Skid control ECU Power management control ECU Yaw rate sensor Steering angle sensor ABS/VSC control is inoperative (ABS/VSC control gradually stops) U0073 U0123 U0124 U0126 U0293 (Warning and indicator lights come on) Electric power steering control (Speed of vehicle induction type torque control) Power steering ECU Power management control ECU Skid control ECU Depression of EPS assist (Deterioration of steering assist) U0129 U0293 (Warning light comes on) Air conditioning control (Air conditioning control is in cabin) Air conditioning amplifier Power management control ECU ECM Combination meter Main body ECU Air conditioning function and PTC heater function stop U0100 U0142 U0155 U0293 (Air conditioning is inoperative) Entry function/Power door lock control Certification ECU Main Body ECU ECM Combination meter Power management control ECU Center airbag sensor assembly Unlock permitted U0100 U0101 U0142 U0151 U0155 U0293 U0327 U1133 (Wireless door lock cannot operate) Navigation Eco display Displays fuel consumption per minute and regeneration amount in chart and displays history of average fuel economy Navigation ECU Sub-assembly*1*2 Radio and Display Receiver Assembly*2 Power management control ECU Skid control ECU ECM Combination meter On the navigation Eco screen: Update of the per-minute fuel consumption display (per minute fuel consumption calculation) on the navigation Eco screen (per-minute fuel consumption screen) is stopped Update of the current average fuel economy display on the navigation Eco screen (block fuel consumption screen) is stopped If drivable mileage is displayed on the navigation Eco screen (block fuel consumption screen), the numeric part of the drivable mileage disappears because drivable mileage data cannot be received U0100 U0155 U0293 (None) Energy monitor display Creates energy flow screen which indicates regeneration status and drive force transmission status Navigation ECU Sub-assembly*1*2 Radio and Display Receiver Assembly*2 Power management control ECU Energy flow is not displayed U0100 U0293 (None) Destination identification Identifies destination based on destination and destination package information, and selects the time zone and language used for the display Navigation ECU Sub-assembly*1*2 Radio and Display Receiver Assembly*2 Main body ECU Destination is identified based on information received before communication is interrupted. U0140 (None) Vehicle customization function Allows changing of operation and control conditions for vehicle functions via multi-display operation Navigation ECU Sub-assembly*1*2 Radio and Display Receiver Assembly*2 Certification ECU Main body ECU Air conditioning amplifier When an application that uses remote communication is activated (customization/remote diagnosis), the process will be performed regardless of main body ECU remote communication permit/prohibit state U0073 (None) Time stamp function Diagnostic function that links relative time information from the main body ECU (multiplex network body ECU) and absolute time (actual time) obtained from GPS Navigation ECU Sub-assembly*1 Main body ECU - - U0073 (None) Rear view monitor control Displays rear view monitor (without guide lines) Navigation ECU Sub-assembly*1*2 Radio and Display Receiver Assembly*2 Power management control ECU Main body ECU Screen does not change to camera display. U0100 (None) Vehicle-to-vehicle distance control Driving support ECU Power management control ECU Skid control ECU ECM Steering angle sensor Yaw rate sensor Main body ECU Vehicle-to-vehicle distance control does not operate U0122 U0123 U0126 U0293 (Warning and indicator lights come on) Lane keeping assist system Driving support ECU Main body ECU Skid control ECU Yaw rate sensor EPS ECU Combination meter Lane-keeping assist is inoperative U0122 U0123 U0131 U1104 (Warning and indicator lights come on) Pre-collision system Driving support ECU Power management control ECU Skid control ECU Steering angle sensor Yaw rate sensor Seat belt control ECU Combination meter Main body ECU Pre-collision control is inoperative U0122 U0123 U0126 U0142 U0293 U1104 U1100 (Warning and indicator lights come on) Seat belt control ECU Skid control ECU Driving support ECU Center airbag sensor Main body ECU Pre-collision control is inoperative U0122 U0140 U0151 U1104 (Warning and indicator lights come on) HINT: *1: for Navigation receiver type *2: for Radio and display type