CAN Communication System (Diagnostics - Introduction): Other

TERMINALS OF ECU

Note. After turning the power 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 notice before proceeding with work. Refer to PRECAUTION . 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. 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 article describes the standard values for all CAN related components.

HINT

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.

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CAN NO. 1 JUNCTION CONNECTOR Check the CAN No. 1 junction connector (Engine room main wire side). HINT: 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 Power management bus)). Connection diagram TEXT IN ILLUSTRATION *a Front view of wire harness connector (to CAN No. 1 Junction Connector) *b to ECM (for V1 bus) *c to Skid Control ECU (Brake Booster with Master Cylinder Assembly) (for V1 bus) *d to Skid Control ECU (Brake Booster with Master Cylinder Assembly) (for Power management bus) *e to ECM (for Power management 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 A57-1 (CANH) P ECM (for V1 bus) A57-7 (CANL) V A57-2 (CANH) LG Skid control ECU (Brake booster with master cylinder assembly) (for V1 bus) A57-8 (CANL) L A57-3 (CANH) P Skid control ECU (Brake booster with master cylinder assembly) (for Power management bus) A57-9 (CANL) V A57-4 (CANH) B ECM (for Power management bus) A57-10 (CANL) W Check the CAN No. 1 junction connector (Instrument panel wire side). Connection diagram TEXT IN ILLUSTRATION *a Front view of wire harness connector (to CAN No. 1 Junction Connector) *b to CAN No. 5 Junction Connector (for Power management bus) *c Main body ECU (Multiplex Network Body ECU) (for V1 bus) *d to CAN No. 2 Junction Connector (for V1 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 H112-3 (CANH) B CAN No. 5 junction connector (for Power management bus) H112-9 (CANL) W H112-5 (CANH) BR Main body ECU (Multiplex network body ECU) (for V1 bus) H112-11 (CANL) W H112-6 (CANH) R CAN No. 2 junction connector (for V1 bus) H112-12 (CANL) W
CAN NO. 2 JUNCTION CONNECTOR Check the CAN No. 2 junction connector (Instrument panel connector holder front side). Connection diagram TEXT IN ILLUSTRATION *a Front view of wire harness connector (to CAN No. 2 Junction Connector) *b to Steering Angle Sensor (Spiral Cable with Sensor Sub-assembly) *c to Certification ECU (Smart Key ECU Assembly) *d to Airbag Sensor Assembly *e to Yaw Rate and Acceleration 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 H105-3 (CANH) L Steering angle sensor (Spiral cable with sensor sub-assembly) H105-2 (CANL) B H105-6 (CANH) L Certification ECU (Smart key ECU assembly) H105-5 (CANL) B H105-9 (CANH) L Airbag sensor assembly H105-8 (CANL) B H105-12 (CANH) L Yaw rate and acceleration sensor H105-11 (CANL) B Check the CAN No. 2 junction connector (Instrument panel connector holder rear side). Connection diagram TEXT IN ILLUSTRATION *a Front view of wire harness connector (to CAN No. 2 Junction Connector) *b to CAN No. 1 Junction Connector *c to CAN No. 3 Junction Connector *d to DLC3 *e to Power Steering ECU Assembly *f to Navigation ECU (Display and Navigation Module Display)*1 to Navigation ECU (Navigation Computer Sub-assembly)*2 Check the connection diagram of the components which are connected to the CAN No. 2 junction connector. Terminal No. (Symbol) Wiring Color Connected to H104-1 (CANH) R CAN No. 1 junction connector H104-2 (CANL) W H104-4 (CANH) R CAN No. 3 junction connector H104-5 (CANL) W H104-7 (CANH) R DLC3 H104-8 (CANL) W H104-10 (CANH) R Power steering ECU assembly H104-11 (CANL) W H104-13 (CANH) R Navigation ECU (Display and navigation module display)*1 Navigation ECU (Navigation computer sub-assembly)*2 H104-14 (CANL) W *1: w/ Navigation system (for DVD) *2: w/ Navigation system (for HDD)
CAN NO. 3 JUNCTION CONNECTOR Check the CAN No. 3 junction connector (Engine room main wire side). Connection diagram TEXT IN ILLUSTRATION *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 A58-1 (CANH) Y Transmission control ECU assembly A58-7 (CANL) BR Check the CAN No. 3 junction connector (Instrument panel wire side). Connection diagram TEXT IN ILLUSTRATION *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 Combination Meter 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 H113-4 (CANH) P Power management control ECU H113-10 (CANL) V H113-5 (CANH) R CAN No. 2 junction connector H113-11 (CANL) W H113-6 (CANH) P Combination meter assembly H113-12 (CANL) V
CAN NO. 4 JUNCTION CONNECTOR (for V2 Bus) Check the CAN No. 4 junction connector. Connection diagram TEXT IN ILLUSTRATION *1 CAN No. 4 Junction Connector - - *a Junction Connector B Side *b Junction Connector A 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. JUNCTION CONNECTOR B SIDE Terminal No. (Symbol) Wiring Color Connected to H110-1 (CANH) P Parking assist ECU H110-2 (CANL) B JUNCTION CONNECTOR A SIDE Terminal No. (Symbol) Wiring Color Connected to H111-1 (GND) W-B Body ground H106-1 (CANH) R Power management control ECU H106-2 (CANL) B H107-1 (CANH) G Clearance warning ECU assembly H107-2 (CANL) B H108-1 (CANH) L Driving support ECU assembly H108-2 (CANL) B H109-1 (CANH) Y Seat belt control ECU H109-2 (CANL) B
CAN NO. 5 JUNCTION CONNECTOR (for Power Management Bus) Check the CAN No. 5 junction connector (Instrument panel connector holder front side). Connection diagram TEXT IN ILLUSTRATION *a Front view of wire harness connector (to CAN No. 5 Junction Connector) *b to CAN No. 1 Junction Connector Check the connection diagram of the components which are connected to the CAN No. 5 junction connector. Terminal No. (Symbol) Wiring Color Connected to H97-2 (CANH) B CAN No. 1 junction connector H97-3 (CANL) W Check the CAN No. 5 junction connector (Instrument panel connector holder rear side). Connection diagram TEXT IN ILLUSTRATION *a Front view of wire harness connector (to CAN No. 5 Junction Connector) *b to Air Conditioning Amplifier Assembly *c to Power Management Control 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 H98-5 (CANH) Y Air conditioning amplifier assembly H98-3 (CANL) BR H98-6 (CANH) LG Power management control ECU H98-4 (CANL) L
CAN NO. 6 JUNCTION CONNECTOR (for MS Bus) Check the CAN No. 6 junction connector. Connection diagram TEXT IN ILLUSTRATION *1 CAN No. 6 Junction Connector - - *a Junction Connector B Side *b Junction Connector A Side *c Earth Terminal *d Front view of wire harness connector (to CAN No. 6 Junction Connector) Check the connection diagram of the components which are connected to the CAN No. 6 junction connector. JUNCTION CONNECTOR A SIDE Terminal No. (Symbol) Wiring Color Connected to H103-1 (GND) W-B Body ground H99-1 (CANH) R Outer mirror control ECU assembly (Front passenger side) H99-2 (CANL) W H100-1 (CANH) G Main body ECU (Multiplex network body ECU) H100-2 (CANL) W H101-1 (CANH) L Position control ECU and switch assembly H101-2 (CANL) W H102-1 (CANH) Y Outer mirror control ECU assembly (Driver side) H102-2 (CANL) W
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 H44-6 (CANH) - H44-14 (CANL) R - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms H44-6 (CANH) - H44-4 (CG) R - G HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H44-14 (CANL) - H44-4 (CG) W - G LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H44-6 (CANH) - H44-16 (BAT) R - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H44-14 (CANL) - H44-16 (BAT) W - R LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher TEXT IN ILLUSTRATION *1 DLC3
ECM Disconnect the ECM connectors. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) - - Measure the resistance according to the value(s) in the table below. Standard Resistance FOR V1 BUS MAIN LINES Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A60-13 (CANH) - A60-5 (CANL) P - V HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 108 to 132 ohms A60-13 (CANH) - D27-104 (E1) P - BR HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher A60-5 (CANL) - D27-104 (E1) V - BR LOW-level CAN bus line - Ground Power switch off 200 ohms or higher A60-13 (CANH) - A60-20 (BATT) P - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A60-5 (CANL) - A60-20 (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 LINES Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A60-12 (CANP) - A60-4 (CANN) B - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 108 to 132 ohms A60-12 (CANP) - D27-104 (E1) B - BR HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher A60-4 (CANN) - D27-104 (E1) W - BR LOW-level CAN bus line - Ground Power switch off 200 ohms or higher A60-12 (CANP) - A60-20 (BATT) B - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A60-4 (CANN) - A60-20 (BATT) W - R LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
COMBINATION METER ASSEMBLY Disconnect the combination meter assembly connector. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Combination Meter 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 H19-32 (CANH) - H19-31 (CANL) P - V HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 108 to 132 ohms H19-32 (CANH) - H19-33 (EP) P - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H19-31 (CANL) - H19-33 (EP) V - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H19-32 (CANH) - H19-22 (B) P - V HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H19-31 (CANL) - H19-22 (B) V - V LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
POWER MANAGEMENT CONTROL ECU V1 Bus Branch Lines Disconnect the power management control ECU connector. TEXT IN ILLUSTRATION *a 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 V1 BUS BRANCH LINES Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition H4-25 (CA1H) - H4-24 (CA1L) P - V HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms H4-25 (CA1H) - H4-4 (E12) P - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H4-24 (CA1L) - H4-4 (E12) V - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H4-25 (CA1H) - H4-7 (AM21) P - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H4-24 (CA1L) - H4-7 (AM21) V - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher V2 Bus Main Lines Disconnect the power management control ECU connector. TEXT IN ILLUSTRATION *a 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 V2 BUS MAIN LINES Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition H3-34 (CA2H) - H3-35 (CA2L) R - B HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 108 to 132 ohms H3-34 (CA2H) - H3-6 (E1) R - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H3-35 (CA2L) - H3-6 (E1) B - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H3-34 (CA2H) - H3-1 (AM22) R - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H3-35 (CA2L) - H3-1 (AM22) B - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher Power Management Bus Main Lines Disconnect the power management control ECU connector. TEXT IN ILLUSTRATION *a 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 POWER MANAGEMENT BUS MAIN LINES Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition H4-31 (CA3P) - H4-30 (CA3N) LG - L HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 108 to 132 ohms H4-31 (CA3P) - H4-4 (E12) LG - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H4-30 (CA3N) - H4-4 (E12) L - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H4-31 (CA3P) - H4-7 (AM21) LG - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H4-30 (CA3N) - H4-7 (AM21) L - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Disconnect the main body ECU (multiplex network body ECU) connectors. TEXT IN ILLUSTRATION *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. Standard Resistance V1 BUS BRANCH LINES Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition H16-14 (CANH) - H16-13 (CANL) BR - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms H16-14 (CANH) - H44-4 (CG) BR - G HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H16-13 (CANL) - H44-4 (CG) W - G LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H16-14 (CANH) - H44-16 (BAT) BR - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H16-13 (CANL) - H44-16 (BAT) W - R LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher CAN MS BUS MAIN LINES Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition H17-9 (CANP) - H17-10 (CANN) G - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 108 to 132 ohms H17-9 (CANP) - H44-4 (CG) G - G HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H17-10 (CANN) - H44-4 (CG) W - G LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H17-9 (CANP) - H44-16 (BAT) G - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H17-10 (CANN) - H44-16 (BAT) W - R LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) Disconnect the skid control ECU (brake booster with master cylinder assembly) connector. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Skid Control ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance V1 BUS BRANCH LINES Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A61-37 (CA1H) - A61-38 (CA1L) LG - L HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms A61-37 (CA1H) - A61-28 (GND) LG - W HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher A61-38 (CA1L) - A61-28 (GND) L - W LOW-level CAN bus line - Ground Power switch off 200 ohms or higher A61-37 (CA1H) - A61-15 (BS) LG - B HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A61-38 (CA1L) - A61-15 (BS) L - B LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher POWER MANAGEMENT BUS BRANCH LINES Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A61-35 (CA2H) - A61-34 (CA2L) P - V HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms A61-35 (CA2H) - A61-28 (GND) P - W HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher A61-34 (CA2L) - A61-28 (GND) V - W LOW-level CAN bus line - Ground Power switch off 200 ohms or higher A61-35 (CA2H) - A61-15 (BS) P - B HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A61-34 (CA2L) - A61-15 (BS) V - B LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
STEERING ANGLE SENSOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY) Disconnect the steering angle sensor connector. TEXT IN ILLUSTRATION *a 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 H29-4 (CANH) - H29-3 (CANL) L - B HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms H29-4 (CANH) - H29-2 (ESS) L - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H29-3 (CANL) - H29-2 (ESS) B - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H29-4 (CANH) - H29-6 (BAT) L - G HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H29-3 (CANL) - H29-6 (BAT) B - G LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
YAW RATE AND ACCELERATION SENSOR Disconnect the yaw rate and acceleration sensor connector. TEXT IN ILLUSTRATION *1 DLC3 *a Front view of wire harness connector (to Yaw Rate and Acceleration 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 H87-3 (CANH) - H87-2 (CANL) L - B HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms H87-3 (CANH) - H87-1 (GND) L - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H87-2 (CANL) - H87-1 (GND) B - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H87-3 (CANH) - H44-16 (BAT) L - R HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H87-2 (CANL) - H44-16 (BAT) B - R LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
POWER STEERING ECU ASSEMBLY Disconnect the power steering ECU assembly connectors. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Power Steering ECU 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 H25-1 (CANH) - H25-7 (CANL) R - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms H25-1 (CANH) - A26-2 (PGND) R - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H25-7 (CANL) - A26-2 (PGND) W - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H25-1 (CANH) - A26-1 (PIG) R - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H25-7 (CANL) - A26-1 (PIG) W - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
AIRBAG SENSOR ASSEMBLY Disconnect the airbag sensor assembly connector. TEXT IN ILLUSTRATION *1 DLC3 - - *a Front view of wire harness connector (to Airbag Sensor 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 H84-13 (CANH) - H84-22 (CANL) L - B HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms H84-13 (CANH) - H84-25 (E1) L - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H84-22 (CANL) - H84-25 (E1) B - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H84-13 (CANH) - H44-16 (BAT) L - R CAN communication line H - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H84-22 (CANL) - H44-16 (BAT) B - R CAN communication line L - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Disconnect the smart key ECU assembly connector. TEXT IN ILLUSTRATION *a 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 H1-9 (CANH) - H1-10 (CANL) L - B HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms H1-9 (CANH) - H1-15 (E) L - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H1-10 (CANL) - H1-15 (E) B - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H1-9 (CANH) - H1-1 (+B) L - B HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H1-10 (CANL) - H1-1 (+B) B - B LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
TRANSMISSION CONTROL ECU ASSEMBLY Disconnect the transmission control assembly ECU connectors. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Transmission Control ECU 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 A22-16 (CA1H) - A22-15 (CA1L) Y - BR HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms A22-16 (CA1H) - A22-1 (E1) Y - BR HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher A22-15 (CA1L) - A22-1 (E1) BR - BR LOW-level CAN bus line - Ground Power switch off 200 ohms or higher A22-16 (CA1H) - A21-15 (BATT) Y - SB HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A22-15 (CA1L) - A21-15 (BATT) BR - SB LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
NAVIGATION ECU (DISPLAY AND NAVIGATION MODULE DISPLAY) (w/ Navigation System for DVD) Disconnect the navigation ECU (display and navigation module display) connector. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Display and Navigation Module Display) Measure the resistance according to the value(s) in the table below. Standard Resistance Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition H60-21 (CANH) - H60-22 (CANL) R - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms H60-21 (CANH) - H60-10 (GND1) R - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H60-22 (CANL) - H60-10 (GND1) W - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H60-21 (CANH) - H60-1 (+B1) R - V HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H60-22 (CANL) - H60-1 (+B1) W - V LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
NAVIGATION ECU (NAVIGATION COMPUTER SUB-ASSEMBLY) (w/ Navigation System for HDD) Disconnect the navigation ECU (navigation computer sub-assembly) connector. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Navigation Computer 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 H60-21 (CANH) - H60-22 (CANL) R - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms H60-21 (CANH) - H60-10 (GND1) R - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H60-22 (CANL) - H60-10 (GND1) W - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H60-21 (CANH) - H60-1 (+B1) R - V HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H60-22 (CANL) - H60-1 (+B1) W - V LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
AIR CONDITIONING AMPLIFIER ASSEMBLY Disconnect the air conditioning amplifier assembly connector. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Air Conditioning Amplifier 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 H85-11 (CANH) - H85-12 (CANL) Y - BR HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms H85-11 (CANH) - H85-14 (GND) Y - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H85-12 (CANL) - H85-14 (GND) BR - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H85-11 (CANH) - H85-21 (B) Y - Y HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H85-12 (CANL) - H85-21 (B) BR - Y LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
SEAT BELT CONTROL ECU (w/ Pre-collision System) Disconnect the seat belt control ECU connectors. TEXT IN ILLUSTRATION *a 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 H7-1 (CANH) - H7-2 (CANL) Y - B HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms H7-1 (CANH) - H6-8 (PGND) Y - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H7-2 (CANL) - H6-8 (PGND) B - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H7-1 (CANH) - H6-7 (+B) Y - B HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H7-2 (CANL) - H6-7 (+B) B - B LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
DRIVING SUPPORT ECU ASSEMBLY (w/ Dynamic Radar Cruise Control System) Disconnect the driving support ECU assembly connector. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Driving Support ECU 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 H5-39 (CA2H) - H5-17 (CA2L) L - B HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms H5-39 (CA2H) - H5-25 (GND) L - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H5-17 (CA2L) - H5-25 (GND) B - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H5-39 (CA2H) - H5-30 (B) L - BE HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H5-17 (CA2L) - H5-30 (B) B - BE LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
OUTER MIRROR CONTROL ECU ASSEMBLY (for Driver side) (w/ Seat Position Memory) Disconnect the outer mirror control ECU assembly connector. TEXT IN ILLUSTRATION *a Front view of wire harness (to Outer Mirror Control ECU 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 K7-9 (CANP) - K7-8 (CANN) B - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms K7-9 (CANP) - K7-7 (GND) B - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher K7-8 (CANN) - K7-7 (GND) W - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher K7-9 (CANP) - K7-6 (CPUB) B - LG HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher K7-8 (CANN) - K7-6 (CPUB) W - LG LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
OUTER MIRROR CONTROL ECU ASSEMBLY (for Front passenger side) (w/ Seat Position Memory) Disconnect the outer mirror control ECU assembly connector. TEXT IN ILLUSTRATION *a Front view of wire harness (to Outer Mirror Control ECU 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 J8-9 (CANP) - J8-8 (CANN) W - Y HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms J8-9 (CANP) - J8-7 (GND) W - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher J8-8 (CANN) - J8-7 (GND) Y - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher J8-9 (CANP) - J8-6 (CPUB) W - LG HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher J8-8 (CANN) - J8-6 (CPUB) Y - LG LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
POSITION CONTROL ECU AND SWITCH ASSEMBLY (w/ Seat Position Memory) Disconnect the connectors of the position control ECU and switch assembly. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Position Control ECU and Switch 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 X5-8 (CANP) - X5-7 (CANN) L - W HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms X5-8 (CANP) - X4-2 (GND) L - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher X5-7 (CANN) - X4-2 (GND) W - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher X5-8 (CANP) - X4-7 (+B) L - W HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher X5-7 (CANN) - X4-7 (+B) W - W LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
PARKING ASSIST ECU (w/ Navigation System (for DVD)) Disconnect the parking assist ECU connector. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Parking Assist 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 H9-22 (CANH) - H9-21 (CANL) P - B HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms H9-22 (CANH) - H9-3 (GND1) P - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher H9-21 (CANL) - H9-3 (GND1) B - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher H9-22 (CANH) - H9-1 (+B) P - B HIGH-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher H9-21 (CANL) - H9-1 (+B) B - B LOW-level CAN bus line - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher
CLEARANCE WARNING ECU ASSEMBLY (w/ Intuitive Parking Assist System) Disconnect the clearance warning ECU assembly connector. TEXT IN ILLUSTRATION *1 DLC3 - - *a Front view of wire harness connector (to Clearance Warning ECU 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 A49-19 (R1) - A49-20 (R2) Y - BR HIGH-level CAN bus line - LOW-level CAN bus line Power switch off 54 to 69 ohms A49-19 (R1) - A49-21 (E) Y - W-B HIGH-level CAN bus line - Ground Power switch off 200 ohms or higher A49-20 (R2) - A49-21 (E) BR - W-B LOW-level CAN bus line - Ground Power switch off 200 ohms or higher A49-19 (R1) - H44-16 (BAT) Y - R CAN communication line H - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher A49-20 (R2) - H44-16 (BAT) BR - R CAN communication line L - Battery positive (+) Cable disconnected from negative (-) battery terminal 6 kohms or higher

FAIL-SAFE CHART

FAIL-SAFE FUNCTION When communication fails in any of the CAN bus lines (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 Control Master System Related Fail-safe Operation DTC Detection (Driver Detectable) Remote service function Remote diagnosis function Maintenance notification function (Informs the call center of vehicle warning information, diagnostic information and the state of forgotten operations such as locking the doors using the DCM (Telematics transceiver), then the center notifies the user.) Navigation computer sub-assembly (Navigation ECU) w/ Navigation system (for HDD) Airbag ECU assembly Air conditioning amplifier assembly Main body ECU (Multiplex network body ECU) Driving support ECU assembly Skid control ECU (Brake booster with master cylinder assembly) Power management control ECU ECM Certification ECU (Smart key ECU assembly) Combination meter assembly Invalid flag is set. U0073 Remote security function (Informs the call center of alarm sounding state (Alarm notification) using the DCM (Telematics transceiver) and prohibits/permits engine starting in accordance with users request (remote immobilizer)) Navigation computer sub-assembly (Navigation ECU) w/ Navigation system (for HDD) Main body ECU (Multiplex network body ECU) - U0073 Vehicle customization function (Allows changing of operation and control conditions for vehicle functions via multi-display operation) Navigation computer sub-assembly (Navigation ECU) w/ Navigation system (for HDD) Air conditioning amplifier assembly Main body ECU (Multiplex network body ECU) Outer mirror control ECU assembly (Driver side) Certification ECU (Smart key ECU assembly) Combination meter assembly Customization via multi-display is not possible, but customization via main body ECU is possible. When an application that uses remote communication is activated (customization/remote diagnosis), the process will be performed regardless of meter ECU remote communication permit/prohibit state. U0073 Belt warning light control Main body ECU (Multiplex network body ECU) Combination meter assembly Airbag ECU assembly Driver and front passenger seat belt warning lights do not operate. - Door lock/unlock Main body ECU (Multiplex network body ECU) Airbag ECU assembly Power management control ECU ECM Combination meter assembly Key linked operation is permitted. Key confinement prevention unlock operation is permitted. Speed linked automatic door lock operation is prohibited. Shift linked automatic lock/unlock operation is prohibited. U0100 U0101 U0151 U0155 U0293 U1133 Alarm (Sounds the alarm) Main body ECU (Multiplex network body ECU) Power management control ECU ECM Alarm cannot be sounded. - Back door open control Main body ECU (Multiplex network body ECU) Combination meter assembly Back door open control is prohibited. U0155 Illumination control Main body ECU (Multiplex network body ECU) Power management control ECU Certification ECU (Smart key ECU assembly) Interior lights are turned off. Mirror foot illumination is turned off. Footwell illumination is turned off. U0101 U0327 Seat and mirror control Main body ECU (Multiplex network body ECU) Outer mirror control ECU assembly (Driver side) Outer mirror control ECU assembly (Front passenger side) Position control ECU and switch assembly Power management control ECU ECM Certification ECU (Smart key ECU assembly) Does not affect vehicle behavior - LED headlight warning control Main body ECU (Multiplex network body ECU) Power management control ECU LED headlights do not operate. U0293 Destination identification for the intuitive parking assist system (Identifies the market the vehicle was produced for and controls audio data output) Main body ECU (Multiplex network body ECU) - Continues the operation being performed before the communication interruption. U0142 Seat memory switch signal forwarding (Sends switch operation status via MS-CAN) Main body ECU (Multiplex network body ECU) Outer mirror control ECU assembly (Driver side) Outer mirror control ECU assembly (Front passenger side) Seat position memory settings cannot be memorized or recalled - Electric water pump (engine water pump) control (Electric water pump operation control when the engine is stopped) Air conditioning amplifier assembly ECM Performs control as if the engine is stopped (0 RPM). - Air conditioning control (In-cabin air conditioning control) Air conditioning amplifier assembly ECM Temperature adjustment function effectiveness declines. - Ambient temperature correction control (Correction and display of ambient temperature) Air conditioning amplifier assembly Combination meter assembly Ambient temperature correction effectiveness declines. - Electric compressor control Air conditioning amplifier assembly Combination meter assembly Air conditioning effectiveness declines. - Air conditioning control changes Air conditioning amplifier assembly Main body ECU (Multiplex network body ECU) Accurate destination (market that vehicle was produced for) and steering wheel position information cannot be determined. Control is performed based on default destination when undetermined. Air conditioning control function effectiveness declines. - Electric compressor protection control Air conditioning amplifier assembly Power management control ECU Air conditioning cooling function does not operate. - Air conditioning control (Controls air conditioning functions shown on the multi-display) Navigation ECU (Display and navigation module display) w/ Navigation system (for DVD) Navigation ECU (Navigation computer sub-assembly) w/ Navigation system (for HDD) Air conditioning amplifier assembly Air conditioning connection confirmation screen is displayed. Air conditioning cannot be operated. U0073 U0164 Intuitive parking assist system setting/notification Navigation ECU (Display and navigation module display) w/ Navigation system (for DVD) Navigation ECU (Navigation computer sub-assembly) w/ Navigation system (for HDD) Clearance warning ECU assembly Power management control ECU Skid control ECU (Brake booster with master cylinder assembly) Display is not updated. Setting screen is not displayed. U0073 U1110 Multi-display (HV energy flow display) Navigation ECU (Display and navigation module display) w/ Navigation system (for DVD) Navigation ECU (Navigation computer sub-assembly) w/ Navigation system (for HDD) Power management control ECU Display is not updated. U0073 U0293 Navigation destination identification (Display language and time zone selection function) Navigation ECU (Display and navigation module display) w/ Navigation system (for DVD) Navigation ECU (Navigation computer sub-assembly) w/ Navigation system (for HDD) Main body ECU (Multiplex network body ECU) Determined using information from before the communication error. U0073 Memory call function (Recalls Seat position memory settings based on smart key information when door is unlocked) Main body ECU (Multiplex network body ECU) Outer mirror control ECU assembly (Driver side) Outer mirror control ECU assembly (Front passenger side) Position control ECU and switch assembly Certification ECU (Smart key ECU assembly) Combination meter assembly Seat position cannot be memorized or recalled. U0142 Back guide monitor Parking assist ECU Main body ECU (Multiplex network body ECU) Clearance Warning ECU assembly Steering angle sensor (Spiral cable with sensor sub-assembly) Estimated guide lines are not displayed. Cooperative control with the intuitive parking assist system is stopped. Guide lines cannot be adjusted. U0126 U0140 U1110 Intuitive parking assist system detection operation Clearance Warning ECU assembly Power management control ECU Combination meter assembly Obstacle detection is stopped. U0101 U0155 Mirror surface adjustment Outer mirror control ECU assembly (Driver side) Outer mirror control ECU assembly (Front passenger side) Main body ECU (Multiplex network body ECU) Mirror surface position adjustment is not possible. U0142 Mirror surface position memory and recall Outer mirror control ECU assembly (Driver side) Outer mirror control ECU assembly (Front passenger side) Main body ECU (Multiplex network body ECU) Mirror surface position cannot be memorized or recalled. - Reverse-shift linked door mirror operation Outer mirror control ECU assembly (Driver side) Outer mirror control ECU assembly (Front passenger side) Main body ECU (Multiplex network body ECU) Reverse-shift linked operation is unavailable. - Mirror retract/return operation Outer mirror control ECU assembly (Driver side) Outer mirror control ECU assembly (Front passenger side) Main body ECU (Multiplex network body ECU) Mirrors cannot be retracted or returned. - Mirror heaters Outer mirror control ECU assembly (Driver side) Outer mirror control ECU assembly (Front passenger side) Main body ECU (Multiplex network body ECU) Air conditioning amplifier assembly Mirror heaters do not operate. U0142 Mirror foot illumination Outer mirror control ECU assembly (Driver side) Outer mirror control ECU assembly (Front passenger side) Main body ECU (Multiplex network body ECU) Mirror foot illumination does not operate. - Pre-collision control (Brake and seat belt operation when a collision is detected.) Driving support ECU assembly Power management control ECU ECM Skid control ECU (Brake booster with master cylinder assembly) Steering angle sensor (Spiral cable with sensor sub-assembly) Yaw rate and acceleration sensor Seat belt control ECU Main body ECU (Multiplex network body ECU) Pre-collision control is prohibited. U0122 U0123 U0126 U0293 U1100 U1104 Indicator illuminates Seat belt control ECU Skid control ECU (Brake booster with master cylinder assembly) Airbag ECU assembly Driving support ECU assembly Main body ECU (Multiplex network body ECU) Pre-collision control is prohibited. U0122 U0140 U0151 U1104 Indicator illuminates Radar cruise control (Vehicle to vehicle distance control) Driving support ECU assembly Power management control ECU ECM Skid control ECU (Brake booster with master cylinder assembly) Steering angle sensor (Spiral cable with sensor sub-assembly) Yaw rate and acceleration sensor Main body ECU (Multiplex network body ECU) Combination meter assembly Vehicle to vehicle distance control is prohibited. U0122 U0123 U0126 U0293 U1104 Indicator illuminates Seat position memory system (Controls the seat position based on operation conditions) Position control ECU and switch assembly Power management control ECU ECM Main body ECU (Multiplex network body ECU) Combination meter assembly Position does not change or cannot be recalled. - Regenerative braking Skid control ECU (Brake booster with master cylinder assembly) Power management control ECU Regenerative braking is stopped. U0073 U0123 U0124 U0293 Warning and indicator lights come on ABS TRAC VSC Hill-start assist control Skid control ECU (Brake booster with master cylinder assembly) Power management control ECU Steering angle sensor (Spiral cable with sensor sub-assembly) Yaw rate and acceleration sensor Control is stopped. U0073 U0123 U0124 U0126 U0293 Warning and indicator lights come on VDIM cooperative control Skid control ECU (Brake booster with master cylinder assembly) Power steering ECU assembly Control is stopped. U0129 Indicator illuminates HV driving control Power management control ECU ECM Vehicle drives using only the motor (Engine is not used) U0100 U0293 Warning light comes on Regenerative operation Power management control ECU Skid control ECU (Brake booster with master cylinder assembly) Regeneration is prohibited. U0129 Warning light comes on Collision judgment Power management control ECU Airbag ECU assembly Does not affect vehicle behavior U0151 Warning light comes on Air conditioning inverter control Power management control ECU Air conditioning amplifier assembly Air conditioning cooling operation is stopped. - HV system power processing Power management control ECU - Power switch cannot be turned off. (Power switch can be turned off when park (P) is detected.) U1107 Warning light comes on Electric power steering control (Changes assist power based on vehicle speed) Power steering ECU assembly Skid control ECU (Brake booster with master cylinder assembly) Continues to perform control based on a default speed of 100 km/h (62 mph) because vehicle speed is unrecognizable. (Steering wheel feels heavy when the vehicle speed is below 100 km/h (62 mph) and feels light at speeds above 100 km/h (62 mph).) U0129 Indicator illuminates Electric power steering assist start judgment (Judges Ready status and permits assist) Power steering ECU assembly Power management control ECU Permits assist after the engine starts idling (Assist is not performed before engine starts) U0293 Warning and indicator lights come on Assist map selection (Selects proper assist map according to destination, engine type, etc.) Power steering ECU assembly Power management control ECU Default map is used to assist because proper assist map cannot be selected. (Steering feel may be different.) - Steering initialization and zero point learning Power steering ECU assembly Skid control ECU (Brake booster with master cylinder assembly) Steering angle sensor (Spiral cable with sensor sub-assembly) Yaw rate and acceleration sensor Steering force differs between right and left or is uneven U0129 Indicator illuminates Power switch illumination control Certification ECU (Smart key ECU assembly) Main body ECU (Multiplex network body ECU) Illumination does not operate U0142 Airbag warning light control Combination meter assembly Airbag ECU assembly Fuel cut function in the event of a collision is stopped. - Power steering warning light illumination Combination meter assembly Power steering ECU assembly Warning light turns off when communication is interrupted. - Coolant temperature display Combination meter assembly ECM Display is turned off. - Vehicle speed display Combination meter assembly Skid control ECU (Brake booster with master cylinder assembly) Vehicle speed display remains at 0 km/h (0 mph). U0100 U0129 Odometer/Trip meter Combination meter assembly Skid control ECU (Brake booster with master cylinder assembly) Display is not updated. U0100 U0129 HV system indicator Combination meter assembly Power management control ECU The needle of the indicator will remain at the bottom. - Shift position indicator display Combination meter assembly Main body ECU (Multiplex network body ECU) Transmission control ECU assembly Power management control ECU Backlighting only for the letters, arrows and home position of the shift position indicator illuminate. - Meter display (Displays vehicle condition and controls indicator lights) Combination meter assembly Airbag ECU assembly Main body ECU (Multiplex network body ECU) Clearance warning ECU assembly Driving support ECU assembly Skid control ECU (Brake booster with master cylinder assembly) Power management control ECU Power steering ECU assembly ECM Seat belt control ECU Lights do not illuminate or lights remain illuminated U0100 U0129 U0131 U0142 U0151 (Abnormal light operation or light does not illuminate) Buzzer (Controls sounding of buzzer for various functions) Combination meter assembly Main body ECU (Multiplex network body ECU) Driving support ECU assembly Skid control ECU (Brake booster with master cylinder assembly) Power management control ECU Power steering ECU assembly Certification ECU (Smart key ECU assembly) The sounding of the buzzer for the following items remains unchanged when the power switch is on (IG) and does not sound when the power switch is off. READY buzzer EPS buzzer Certification completion notification/smart key single buzzer Radar cruise low speed cancel buzzer Sport shift reject buzzer Shift operation reject buzzer EV reject buzzer The sounding of the buzzer for the following items stops when the power switch is on (IG), and stops sounding/does not sound when the power switch is off. Driver seat belt and reverse common buzzer READY buzzer Reverse buzzer Light reminder buzzer Seatbelt buzzer Warning when driving with the parking brake unreleased Warning when driving with a door ajar Smart key intermittent buzzer Brake system buzzer Smart key continuous buzzer NDB warning buzzer (P position request buzzer) HV battery low voltage warning buzzer Slide roof warning buzzer Accelerator depressed with neutral (N) selected U0129 U0131 U0142 Multi-display Combination meter assembly Navigation ECU (Display and navigation module display) (for DVD navigation system) Navigation ECU (Navigation computer sub-assembly) (for HDD navigation system) Main body ECU (Multiplex network body ECU) Clearance warning ECU assembly Driving support ECU assembly Skid control ECU (Brake booster with master cylinder assembly) Power management control ECU Power steering ECU assembly ECM Certification ECU (Smart key ECU assembly) Seat belt control ECU Intuitive parking assist system is not displayed. Intuitive parking assist system status is not displayed. Light reminder warning is turned off. The following warnings are controlled based on the latest signal state until the power switch is turned off. HV system warning Cruise warning, Automatic cruise control (ACC) display state PCS warning Door ajar warning Smart system/power management control warning Parking brake unreleased warning Sliding roof warning EV MODE indicator/warning LED headlight warning U0100 U0129 U0131 U0142 Multi-information display (Cruise information display) (Energy monitor / Mileage & Average fuel economy / Instantaneous fuel economy & Average fuel economy after refueling / Drivable mileage / Average vehicle speed / Ambient temperature) Combination meter assembly Air conditioning amplifier assembly Main body ECU (Multiplex network body ECU) Skid control ECU (Brake booster with master cylinder assembly) Power management control ECU ECM Clearance Warning ECU assembly Transmission control ECU assembly Energy monitor is not displayed on the multi-information display. Ambient temperature E°C (E°F) is displayed. Displays for other items are not updated. - ECO light (blue) and SPORT light (red) display (Controls ECO light (blue) based on ECO zone display state and sport light (red) based on SPORT mode signal) Combination meter assembly Power management control ECU ECO light (blue) and SPORT light (red) are turned off. - Tachometer (Displays engine speed) Combination meter assembly Power management control ECU The needle points at 0 RPM. - FUEL gauge Combination meter assembly Skid control ECU (Brake booster with master cylinder assembly) Power management control ECU - - Display automatic dimming control (Brightness of displays changes between bright areas and dark areas according to light control sensor) Combination meter assembly Main body ECU (Multiplex network body ECU) Maintains the latest state. U0155 Diagnostic system Receives signals from ECUs with DTCs and controls the operation of warning indicators or messages based on the signals received. (Receives trip counter and time counter signals, and stores each value when the system is malfunctioning) Combination meter assembly Airbag ECU assembly Main body ECU (Multiplex network body ECU) Driving support ECU assembly Skid control ECU (Brake booster with master cylinder assembly) Power management control ECU Power steering ECU assembly Seat belt control ECU - - P position switch indicator light display function Transmission control ECU assembly Main body ECU (Multiplex network body ECU) - U0146 (Indicator goes off) P control DTC detection (Used as a malfunction detection condition for DTC C2309, C2315 and U0146) Transmission control ECU assembly Main body ECU (Multiplex network body ECU) - U0146 P control CPU sleep control Transmission control ECU assembly Main body ECU (Multiplex network body ECU) Ignition off state cannot be judged using CAN data. U0146 P position switch indicator light dimmer control Transmission control ECU assembly Main body ECU (Multiplex network body ECU) - U0146 SPORT mode change control Power management control ECU Power steering ECU assembly SPORT mode change control does not operate. - Idle map Power management control ECU Power steering ECU assembly Idle up is not performed.

CAN Communication System (Diagnostics - Introduction): Other Lexus CT I