Smart Key System (for Start Function) (diagnostics - Introduction) Toyota Prius V I

PRECAUTION

1. PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Advanced Parking Guidance System Refer to «INITIALIZATION»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction__initialization) Power Door Lock Control System

Scheme 1

Scheme 2

Scheme 3

Scheme 4

Scheme 5

1. *: Except Driver's Door Only Smart Key System

SYSTEM DESCRIPTION

1. PRECAUTION FOR REGISTRATION If replacing any of the following parts, refer to the registration procedures. Refer to «REGISTRATION»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#engine-immobiliser-system-diagnostics-introduction) . ID code box Certification ECU (smart key ECU assembly) Transmission control ECU assembly Electrical key transmitter sub-assembly (key)
2. SYSTEM FUNCTION Function Outline Ignition function When the electrical key transmitter sub-assembly (key) is brought into the vehicle and verified, this function changes the power source or starts the hybrid control system when the power switch and brake pedal are operated. Auxiliary battery saving function for vehicle When the vehicle is not used for a long time, this function extends the interval between each periodic transmission of the request signal, or stops transmission of the request signal to save auxiliary battery power. When 5 days elapse without a response from the electrical key transmitter sub-assembly (key), periodic transmission stops. When 14 days elapse without a response from the electrical key transmitter sub-assembly (key), the lock/unlock sensors of all door outside handle assemblies except the driver door are disabled. If 10 minutes or more elapse while the electrical key transmitter sub-assembly (key) is in the detection area (including the vehicle interior), smart key system automatically deactivates the exterior detection area that the electrical key transmitter sub-assembly (key) is in. Transmitter battery saving function If a switch on the electrical key transmitter sub-assembly (key) is depressed and held, this function stops transmission of the signal after approximately 20 seconds to save transmitter battery power. Key cancel function Cancels the smart key system when certain operations are performed. Immobiliser function Allows the hybrid control system to be started only using registered electrical key transmitter sub-assembly (key) to prevent an unauthorized hybrid control system start. Automatic power off function With park (P) selected and the power switch on (ACC) or on (IG) (the hybrid control system is not started and the vehicle is not moving), the power automatically turns off when the vehicle is left as is for 60 minutes or more.
3. DETECTION AREA NOTE: Depending on the vehicle body shape, the electrical key transmitter sub-assembly (key) may not operate in certain locations. Even if the electrical key transmitter sub-assembly (key) is in the vehicle exterior key detection area, the electrical key transmitter sub-assembly (key) may not be properly detected if the electrical key transmitter sub-assembly (key) is near a window, a door handle or the center of the rear bumper. Even if the electrical key transmitter sub-assembly (key) is in the vehicle interior key detection area, the electrical key transmitter sub-assembly (key) may not be properly detected if the electrical key transmitter sub-assembly (key) is on the instrument panel, in the glove box or on the floor. Depending on the way the electrical key transmitter sub-assembly (key) is held, the electrical key transmitter sub-assembly (key) may not operate properly. The key detection area may reduce in size or the electrical key transmitter sub-assembly (key) may not be properly detected under the conditions below: The transmitter battery is depleted. There are TV towers, electric power plants, broadcasting stations, gas stations or other facilities that produce strong electric waves nearby. Wireless products such as cell phones, etc. are carried with the electrical key transmitter sub-assembly (key). The electrical key transmitter sub-assembly (key) is covered by or in contact with a metal object. Electric wave-type keyless entry systems are being operated nearby. The electrical key transmitter sub-assembly (key) is placed near high-voltage equipment or equipment that emits electrical noise. The request signal sent from the certification ECU (smart key ECU assembly) is transmitted from each electrical key antenna (outside) to form the smart key detection area. The detection area formed by each electrical key antenna (outside) has a detection range of 0.7 to 1 m (2.30 to 3.28 ft.) from the door handles and rear bumper* (electrical key antenna [outside luggage]). *: w/ Except driver's door only smart key system When the vehicle is parked (the power is off and the doors are locked*), the detection area of each electrical key antenna (outside) is formed by emitting a periodic request signal every 0.25 seconds in order to detect the electrical key transmitter sub-assembly (key). Also, when the doors are locked and a lock sensor is touched, a request signal is emitted, the detection area outside the vehicle is formed and the electrical key transmitter sub-assembly (key) is detected. HINT: *: The smart key system controls each door individually. After a door is locked with the door lock sensor or wireless remote control function, a detection area is formed at the locked door even if all the doors are not locked. The detection area of the electrical key antenna (outside luggage) is formed when the back door opener switch is pressed*. *: w/ Except driver's door only smart key system The detection area inside the vehicle is formed and the electrical key transmitter sub-assembly (key) is detected when any of the following conditions are met: 1) The driver door is opened and closed, 2) the brake pedal is depressed, 3) the power switch is operated, 4) the conditions required for various warnings are met, or 5) a smart door lock operation is performed. The detection area inside the vehicle when starting the hybrid control system can be customized through the customize function.

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. Use these procedures to troubleshoot the smart key system (for Start Function).
2. *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. CUSTOMER PROBLEM ANALYSIS CHECK HINT: In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred. Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases. The following 5 items are important points for problem analysis: What Vehicle model, system name When Date, time, occurrence frequency, whether the problem occurred recently or has been occurring for a long time Where Whether the problem occurs at a specific location Under what conditions? Whether the doors were locked or unlocked, whether the power switch was on, whether the hybrid control system had started How did it happen? Problem symptoms* *: Be sure to ask the customer in detail about the following points concerning the vehicle operating conditions, environment and problem, and then check for DTCs. If the entry lock/unlock function does not operate for all doors. If the entry lock function does not operate. If the entry unlock function does not operate. If both the entry lock and unlock functions do not operate. If the wireless lock and unlock functions do not operate. If there is no power even when the power switch is pressed [does not turn on (ACC)]. If the hybrid control system does not start with the entry ignition function. If the wireless answer-back buzzer and outside warning buzzers do not sound. If the customer attempted to start the hybrid control system by touching the electrical key transmitter sub-assembly (key) to the power switch and pressing the power switch. If the interior warning buzzers do not sound. Any other details concerning the problem. If it is thought that wave interference is likely, be sure to ask the customer in detail about the following points concerning the vehicle operating conditions, environment and problem. Specific locations where the system does not operate (such as near TV towers, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc.). Specific times when the system does not operate: Whether or not symptoms occurred immediately after purchase or only recently. Whether or not the symptoms occurred when the key was near the vehicle (electrical key antenna). If the system does not operate only when near specific vehicles (there may be an effect from electric waves from the wireless systems of other vehicles). If the system operates intermittently. If the key is bundled together with other items. If the key is carried together with other electronic devices, such as cell phones, personal computers, portable music players, other electrical key transmitter sub-assembly (key), etc. (keep the key at least 0.1 m (0.33 ft.) away from such items). Where the key is being kept when not in use: Whether or not the key being placed within 1 m (3.28 ft.) of items such as TVs, DVD recorders, induction cookers, rice cookers, dishwashers, modems, cell phones, personal computers, microwave ovens, desk or floor lamps, cordless telephones, etc. If there are electronic devices that transmit electric waves placed in the vehicle. When the key battery was last replaced (when the battery is low): The key battery can be checked using the "Key Low Battery" item in the Data List. Refer to «DATA LIST / ACTIVE TEST»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#smart-key-system-for-entry-function-diagnostics-introduction) . If the customer installed any optional components (theft deterrent devices, wireless fog lights, etc.) to the vehicle. NEXT: Go to next step
3. INSPECT BASIC OPERATION Inspect auxiliary battery voltage. Standard voltage 11 to 14 V (IG OFF) NOTE: If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step. Check for blown fuses, open or shorted wire harnesses, improperly connected connectors and other problems in areas that can be visually inspected. NEXT: Go to next step
4. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* Use the Techstream to check if the CAN communication system is functioning normally. Refer to «DIAGNOSIS SYSTEM»(/toyota/prius-v/i-2011-2014/remont/communication-devices/#can-communication-system-diagnostics-introduction) . RESULT Result Proceed to CAN DTC is not output A CAN DTC is output B B --> GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-v/i-2011-2014/remont/communication-devices/#can-communication-system-diagnostics-introduction) A: Go to next step
5. CHECK FOR DTC* Check for DTCs and note any codes that are output. Refer to «DTC CHECK / CLEAR»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__dtc-check-clear) . RESULT Result Proceed to DTC is not output A Engine immobiliser system DTC is output B Smart key system (for Entry Function) DTC is output C Smart key system (for Start Function) DTC is output D B --> GO TO ENGINE IMMOBILISER SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#engine-immobiliser-system-diagnostics-introduction__diagnostic-trouble-code-chart) C --> GO TO SMART KEY SYSTEM (for Entry Function). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#smart-key-system-for-entry-function-diagnostics-introduction__diagnostic-trouble-code-chart) D --> GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__diagnostic-trouble-code-chart) A: Go to next step
6. PROBLEM SYMPTOMS TABLE Refer to Problem Symptoms Table. Refer to «PROBLEM SYMPTOMS TABLE»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__problem-symptoms-table) . RESULT Result Proceed to Fault is not listed in problem symptoms table A Fault is listed in problem symptoms table B B --> Go to step 8 A: Go to next step
7. OVERALL ANALYSIS AND TROUBLESHOOTING* Operation Check. Refer to «OPERATION CHECK»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction) . Terminals of ECU. Refer to «TERMINALS OF ECU»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction) . Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__data-list-active-test) . NEXT: Go to next step
8. REPAIR OR REPLACE NEXT: Go to next step
9. CHECK FOR DTC* Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__dtc-check-clear) . Recheck for DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__dtc-check-clear) . HINT: Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure. RESULT Result Proceed to DTC is not output A DTC is output B B --> GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__diagnostic-trouble-code-chart) A --> END

Scheme 6

Scheme 7

Scheme 8

Scheme 9

1. OPERATION DESCRIPTION Smart ignition function: When the electrical key transmitter sub-assembly (key) is in the detection area inside the vehicle and the brake pedal is depressed, the hybrid control system is started by pressing the power switch. When the electrical key transmitter sub-assembly (key) is in the detection area inside the vehicle and the brake pedal is not depressed, the power source mode is changed by pressing the power switch. The power source mode changes in the following order every time the power switch is pressed: off --> on (ACC) --> on (IG) --> off. After getting into the vehicle while carrying the electrical key transmitter sub-assembly (key) when the power switch is off, if the power switch is pressed while not depressing the brake pedal, the power source mode changes to ACC and the power switch indicator illuminates in amber. After getting into the vehicle while carrying the electrical key transmitter sub-assembly (key) when the power switch is off, if the brake pedal is depressed while park (P) is selected, the power switch indicator illuminates in green. The hybrid control system starts if the power switch is pressed when the power switch indicator is illuminated in green. Changing the power source mode when the electrical key transmitter sub-assembly (key) does not operate correctly due to wave interference or transmitter battery depletion: Unlock the door using the built-in mechanical key and get into the vehicle while carrying the electrical key transmitter sub-assembly (key). When a buzzer sound is heard from the buzzer in the combination meter sub-assembly. By pressing the power switch while not depressing the brake pedal, the power source mode changes in the following order every time the power switch is pressed: off --> on (ACC) --> on (IG) --> off. Starting the hybrid control system when the electrical key transmitter sub-assembly (key) does not operate correctly due to wave interference or transmitter battery depletion: Unlock the door using the built-in mechanical key and get into the vehicle while carrying the electrical key transmitter sub-assembly (key). While depressing the brake pedal with park (P) is selected, hold the ornament side of the electrical key transmitter sub-assembly (key) against the power switch. When a buzzer sound is heard from the buzzer in the combination meter sub-assembly and the power switch indicator illuminates in green, press the power switch within 10 seconds while keeping the brake pedal depressed to start the hybrid control system.
2. CHECK SMART IGNITION FUNCTION Check the smart ignition function: Get into the vehicle while carrying the electrical key transmitter sub-assembly (key) with the power switch off. With park (P) is selected, check that the power switch indicator illuminates in green when the brake pedal is depressed. Then check that the hybrid control system starts when the power switch is pressed after the power switch indicator illuminates in green. While the brake pedal is released and the electrical key transmitter sub-assembly (key) is being carried, check that the power source mode changes in the following order when the power switch is pressed: off --> on (ACC) --> on (IG) --> off. HINT: When the power switch is pressed with the power switch on (IG) and park (P) not selected, the power source mode change to off. Check the smart ignition operation range for the front side. Place the electrical key transmitter sub-assembly (key) in either of the two locations making sure that the electrical key transmitter sub-assembly (key) is oriented as shown in the illustration, and then check that the hybrid control system can be started. TEXT IN ILLUSTRATION *a Inspection Point NOTE: Even if the electrical key transmitter sub-assembly (key) is in the vehicle interior key detection area, the electrical key transmitter sub-assembly (key) may not be properly detected if the electrical key transmitter sub-assembly (key) is on the instrument panel, in the glove box or on the floor. If the electrical key transmitter sub-assembly (key) is within 0.2 m (0.66 ft.) of the shift position, communication may not be possible. HINT: Perform this inspection for both inspection points. Check the smart ignition operation range for the rear side. Place the electrical key transmitter sub-assembly (key) in either of the two locations making sure that the electrical key transmitter sub-assembly (key) is oriented as shown in the illustration, and then check that the hybrid control system can be started. TEXT IN ILLUSTRATION *a Inspection Point NOTE: Even if the electrical key transmitter sub-assembly (key) is in the vehicle interior key detection area, the electrical key transmitter sub-assembly (key) may not be properly detected if the electrical key transmitter sub-assembly (key) is on the instrument panel, in the glove box or on the floor. If the electrical key transmitter sub-assembly (key) is within 0.2 m (0.66 ft.) of the center of the rear seat, communication may not be possible. HINT: Perform this inspection for both inspection points. Check the smart ignition operation range for the luggage compartment. Place the electrical key transmitter sub-assembly (key) in either of the two locations making sure that the electrical key transmitter sub-assembly (key) is oriented as shown in the illustration, and then check that the hybrid control system can be started. TEXT IN ILLUSTRATION *a Inspection Point HINT: Perform this inspection at both locations in the luggage compartment.
3. CHECK POWER SOURCE MODE CHANGING FUNCTION Check the power switch. Check that the power source mode changes according to the chart below. Shift Position Brake Pedal Power Source Mode when power switch Pressed Park (P) selected Released Off --> on (ACC) --> on (IG) --> off Park (P) selected Released on (READY) --> off Park (P) selected Depressed Off --> on (READY) Park (P) selected Depressed On (ACC) --> on (READY) Park (P) selected Depressed On (IG) --> on (READY) Park (P) selected Depressed On (READY) --> off Park (P) not selected Released On (IG) --> off Park (P) not selected Released On (READY) --> off Park (P) not selected Depressed On (READY) --> off
4. CHECK POWER SOURCE MODE INDICATION TEXT IN ILLUSTRATION *1 Power Switch *2 Indicator Light Check the power switch indicator. INDICATOR INSPECTION power switch Indicator Off (Excludes condition in which hybrid control system can be started) Off On (ACC) (Excludes condition in which hybrid control system can be started) Illuminated in amber On (IG) (Excludes condition in which hybrid control system can be started) Illuminated in amber Condition in which hybrid control system can be started* Illuminated in green Hybrid control system started Off HINT: *: CONDITIONS IN WHICH HYBRID CONTROL SYSTEM CAN BE STARTED IS AS FOLLOWS: The hybrid control system can be started by pressing the power switch when all of the following conditions are met. The key is verified*. Park (P) is selected. The stop light switch is on. *: When the electrical key transmitter sub-assembly (key) is in the vehicle, the ID code sent as a result from communication between the electrical key transmitter sub-assembly (key) and certification ECU (smart key ECU assembly) and the ID code calculated by the certification ECU (smart key ECU assembly) are compared. If the ID codes match each other, the vehicle recognizes that the electrical key transmitter sub-assembly (key) is in the vehicle. Indicator Condition Chart Indicator Vehicle State Off Either condition is met: The hybrid control system is starting. The power switch is off and the vehicle is in a state in which the hybrid control system does not start if the power switch is pressed. Illuminated in green All conditions below are met and the vehicle is in a state in which the hybrid control system can be started if the power switch is pressed: The electrical key transmitter sub-assembly (key) is inside the vehicle, the stop light switch is on and park (P) selected. Illuminated in amber The power switch is on (ACC) or on (IG), and the vehicle is in a state in which the hybrid control system does not start if the power switch is pressed. Blinking in amber (2 second intervals) The power management control ECU has an internal malfunction. The indicator starts blinking when the power management control ECU is determined to have an internal malfunction. The indicator stops blinking when the ECU returns to normal or 15 seconds elapse after blinking starts.

CUSTOMIZE PARAMETERS

1. CUSTOMIZE SMART KEY SYSTEM (for Start Function) HINT: The following items can be customized. NOTE: When the customer requests a change in a function, first make sure that the function can be customized. Record the current settings before customizing. Customizing with the Techstream Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Customize Setting / Smart key/Access or Warning. Select the setting by referring to the table below. Display Default Content Setting Relevant ECU Ignition Available Area (Entry ignition available area) All Function that sets the area that the key must be in before the power switch can be operated. Front or All Certification ECU (smart key ECU assembly) Key Low Battery Warning (Warn when key battery becomes weak) ON Enables or disables the sounding of the buzzer when the transmitter battery is low and the power switch is turned off after being on (IG) for 20 minutes or more. ON or OFF Certification ECU (smart key ECU assembly) Entry cancel function (manual operation) HINT: While the smart key system is canceled, it is possible to lock and unlock the doors with the wireless operation, and the start system can be operated by holding the electrical key transmitter sub-assembly against the power switch. The following functions are disabled when the smart key system is canceled. Entry unlock/lock functions Push start function Key lock-in prevention function Entry warning functions When canceling the system through manual operation: Make sure the following conditions are met: The power switch is off. The driver door is closed. The driver door is unlocked. Press the unlock button of the electrical key transmitter sub-assembly. Open the driver door within 5 seconds of completing the step above (driver door: closed at beginning of step --> opened). With the driver door open, press the unlock button of the electrical key transmitter sub-assembly 2 times within 5 seconds of completing the step above. NOTE: If the driver door is closed before or while pressing the unlock button, the entry cancel setting mode will end. Close and open the driver door twice completing the above step (driver door: open at beginning of step --> closed --> opened --> closed --> opened). With the driver door open, press the unlock button of the electrical key transmitter sub-assembly 2 times completing the step above. NOTE: If the driver door is closed before or while pressing the unlock button, the entry cancel setting mode will end. Close and open the driver door completing the step above (driver door: open at beginning of step --> closed --> opened). Close the driver side door within 5 seconds of completing the above step. Check that the wireless buzzer sounds twice (short beeps) to confirm that the smart key system has been canceled. HINT: Finish the step 5 to 7 within 30 seconds. Perform the following procedure to restore the smart key system to the active state from the canceled state. Perform the procedures to cancel the smart key system again. Check that the wireless buzzer sounds once (short beep) to confirm that the smart key system has been restored to the active state. HINT: The system changes between the canceled state and the active state each time the procedure to cancel the system through manual operation is performed. The buzzer sounds twice when the system changes from the active state to the canceled state, and sounds once when the system changes from the canceled state to the active state.

PROBLEM SYMPTOMS TABLE

HINT

1. Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
2. Inspect the fuses and relays related to the system before inspecting the suspected areas below.

SMART KEY SYSTEM (FOR START FUNCTION)

Scheme 10

Scheme 11

Scheme 12

Scheme 13

Scheme 14

1. CHECK POWER MANAGEMENT CONTROL ECU Disconnect the A22, L5 and L6 connectors. Measure the voltage and resistance according to the value(s) in the table below. Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item A22-2 (IG2D) - Body ground Output V - Body ground IG2 signal 20°C (68°F) 130 to 230 ohms IG2 Relay Monitor (Outside) A22-23 (STP) - Body ground Input L - Body ground Stop light switch signal Brake pedal depressed --> Brake pedal released Output voltage at terminal AM21 or AM22 is -2 V or more --> 1 V or less Stop Light Switch1 L5-1 (AM22) - Body ground Input W - Body ground +B power supply Power switch off 9.5 to 16 V - L6-7 (AM21) - Body ground Input Y - Body ground +B power supply Power switch off 9.5 to 16 V - L5-6 (E1) - Body ground - W-B - Body ground Ground Always Below 1 ohms - L6-4 (E12) - Body ground - W-B - Body ground Ground Always Below 1 ohms - L6-24 (CA1L) - Body ground Input/Output P - Body ground CAN communication line Always 10 kohms or higher - L6-25 (CA1H) - Body ground Input/Output V - Body ground CAN communication line Always 10 kohms or higher - L6-17 (SSW2) - Body ground Input Y - Body ground SSW2 contact signal (backup for SSW1 and has same behavior as SSW1) HINT: Backup for SSW1. Behaves the same way as SSW1. Power switch pushed --> Power switch not pushed Below 1 ohms --> 10 kohms or higher Start Switch2 L5-7 (SSW1) - Body ground Input B - Body ground SSW1 contact signal Power switch pushed --> Power switch not pushed Below 1 ohms --> 10 kohms or higher Start Switch1 L6-1 (ACCD) - Body ground Output G - Body ground ACC signal 20°C (68°F) 81.49 to 118.98 ohms ACC Relay Monitor L6-2 (IG1D) - Body ground Output B - Body ground IG1 signal 20°C (68°F) 54.32 to 79.32 ohms IG1 Relay Monitor (Outside) L6-11 (LIN2) - Body ground Input/Output L - Body ground LIN communication line Always 10 kohms or higher - If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the A22, L5 and L6 connectors. Measure the voltage and check for pulses according to the value(s) in the table below. Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item A22-2 (IG2D) - L5-6 (E1) Output V - W-B IG2 signal Power switch on (ACC) --> Power switch on (IG) 1 V or less --> Output voltage at terminal AM21 or AM22 is -2 V or more IG2 Relay Monitor (Outside) L5-9 (INDW) - L5-6 (E1) Output BE - W-B Power switch indicator (orange) illumination output Brake pedal released, park (P) selected, power switch on (ACC), or on (IG) --> Other than previous condition 7 V or higher --> 1 V or less - A22-22 (PCON) - L5-6 (E1) Output LG - W-B P position signal Park (P) selected Pulse generation (See waveform (Scheme 11) ) - A22-28 (PPOS) - L5-6 (E1) Input W - W-B P position signal Park (P) selected Pulse generation (See waveform (Scheme 11) ) - L6-17 (SSW2) - L5-6 (E1) Output Y - W-B SSW2 contact signal (backup for SSW1 and has same behavior as SSW1) HINT: Backup for SSW1. Behaves the same way as SSW1. Power switch pushed --> Power switch not pushed 9 V or higher --> 1 V or less Start Switch2 L5-7 (SSW1) - L5-6 (E1) Output B - W-B Power switch signal Power switch pushed --> Power switch not pushed 9 V or higher --> 1 V or less Start Switch1 L6-1 (ACCD) - L5-6 (E1) Output G - W-B ACC signal Power switch off --> Power switch on (ACC) 1 V or less --> Output voltage at terminal AM21 or AM22 is -2 V or more ACC Relay Monitor L6-2 (IG1D) - L5-6 (E1) Output B - W-B IG1 signal Power switch on (ACC) --> Power switch on (IG) 1 V or less --> Output voltage at terminal AM21 or AM22 is -2 V or more IG1 Relay Monitor (Outside) L5-8 (INDS) - L5-6 (E1) Output R - W-B Power switch indicator (green) illumination output Brake pedal depressed, park (P) selected 7 V or higher - L5-14 (SPDI) - L5-6 (E1) Input V - W-B Vehicle speed signal Power switch on (IG), vehicle being driven at approx. 5 km/h (3 mph) Pulse generation (See waveform (Scheme 12) ) Vehicle Speed Signal L6-20 (IMO) - L5-6 (E1) Output SB - W-B ID code box communication input (Signal input from power management control ECU to ID code box) Power switch off 11 to 14 V Engine Start Request EFI Code Receive Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected Pulse generation (See waveform (Scheme 13) ) L6-21 (IMI) - L5-6 (E1) Input LG - W-B ID code box communication output (Signal output from ID code box to power management control ECU) Power switch off 11 to 14 V Power switch on (IG) Pulse generation (See waveform (Scheme 13) ) Using an oscilloscope, check the signal waveform of the ECU. Waveform 1 Tester Connection CH1: A22-22 (PCON) - L5-6 (E1) CH2: A22-28 (PPOS) - L5-6 (E1) Tool Setting 10 V/DIV., 10 ms./DIV. Vehicle Condition Park (P) selected Waveform 2 Tester Connection L5-14 (SPDI) - L5-6 (E1) Tool Setting 5 V/DIV., 10 ms./DIV. Vehicle Condition Power switch on (IG), vehicle being driven at approx. 5 km/h (3 mph) HINT: The wavelength becomes shorter as the vehicle speed increases. Waveform 1 (Reference) TEXT IN ILLUSTRATION *a Approximately 160 ms *b Approximately 510 ms MEASUREMENT CONDITION Item Content Tester Connection L6-20 (IMO) - L5-6 (E1) Tool Setting 2 V/DIV., 200 ms./DIV. Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected Waveform 2 (Reference) TEXT IN ILLUSTRATION *a Approximately 160 ms *b Approximately 510 ms MEASUREMENT CONDITION Item Content Tester Connection L6-21 (IMI) - L5-6 (E1) Tool Setting 2 V/DIV., 200 ms./DIV. Condition Power switch on (IG)

DIAGNOSIS SYSTEM

1. DESCRIPTION Smart key system (for start function) data and the Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.
2. CHECK DLC3 Check the DLC3. Refer to «GENERAL INFORMATION»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction) .
3. INSPECT AUXILIARY BATTERY VOLTAGE Measure the auxiliary battery voltage with the power switch off. Standard voltage 11 to 14 V (IG OFF) If the voltage is below 11 V, recharge or replace the auxiliary battery.

DTC CHECK / CLEAR

Note. If the Techstream is connected to the vehicle with the power switch off, the information stored in smart key system related ECUs (the certification ECU (smart key ECU assembly), power management control ECU and main body ECU) cannot be read. However, smart key system DTCs and Data List information can be confirmed even if the power switch is off using the method below: Connect the Techstream to the vehicle, and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins (the Techstream screen changes when communication begins). Connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: for Power Source Control: Body Electrical / Power Source Control / Trouble Codes. for Smart Key: Body Electrical / Smart Key / Trouble Codes.

1. CHECK FOR DTC (POWER MANAGEMENT CONTROL ECU) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Trouble Codes. Check for DTCs. HINT: Refer to the Techstream operator's manual for further details.
2. CHECK FOR DTC (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Trouble Codes. Check for DTCs. HINT: Refer to the Techstream operator's manual for further details.
3. CLEAR DTC (POWER MANAGEMENT CONTROL ECU) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Trouble Codes. Clear the DTCs by following the directions on the Techstream display. HINT: Refer to the Techstream operator's manual for further details.
4. CLEAR DTC (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Trouble Codes. Clear the DTCs by following the directions on the Techstream display. HINT: Refer to the Techstream operator's manual for further details.

DATA LIST / ACTIVE TEST

1. DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Trouble Codes. Read the Data List according to the display on the Techstream. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Stop Light Switch1 State of brake pedal/OFF or ON OFF: Brake pedal released ON: Brake pedal depressed Use this item to determine whether the stop light switch is malfunctioning. The hybrid control system cannot be started when this item is "OFF". When this item is malfunctioning, the hybrid control system can be started by pressing and holding the power switch for a certain period of time. Start Switch1 Condition of power switch contact 1/OFF or ON OFF: Power switch not pressed ON: Power switch pressed If the power switch is pressed for a short time, the display may not change. Use this item to determine whether the power switch input signal is malfunctioning. Start Switch2 Condition of power switch contact 2/OFF or ON OFF: Power switch not pressed ON: Power switch pressed This is the backup for power switch 1. Behaves the same way as power switch 1. Latch Circuit Condition of IG related backup circuit (IG hold circuit)/OFF or ON OFF: Power switch off ON: Power switch on (IG) This item behaves in almost the same way as the IG1 and IG2 relays. IG1 Relay Monitor (Outside) IG1 relay activation/OFF or ON OFF: IG1 relay off ON: IG1 relay on As this is the IG1 relay ON signal, this item displays "OFF" when the power switch is on (ACC). IG1 Relay Monitor (Inside) IG1 relay activation/OFF or ON OFF: IG1 relay off ON: IG1 relay on As this is the IG1 relay ON signal, this item displays "OFF" when the power switch is on (ACC). IG2 Relay Monitor (Outside) IG2 relay activation/OFF or ON OFF: IG2 relay off ON: IG2 relay on As this is the IG2 relay ON signal, this item displays "OFF" when the power switch is on (ACC). IG2 Relay Monitor (Inside) IG2 relay activation/OFF or ON OFF: IG2 relay off ON: IG2 relay on As this is the IG2 relay ON signal, this item displays "OFF" when the power switch is on (ACC). Starter Request Signal Condition of hybrid control system start command signal/OFF or ON OFF: Power switch released after approximately 1 second elapses ON: Power switch pressed and held while carrying key with park (P) selected and brake pedal depressed This item displays "ON" when starting the hybrid control system. The hybrid control system cannot be started when this item is "OFF". ACC Relay Monitor ACC relay activation/OFF or ON OFF: ACC relay off ON: ACC relay on This item displays "OFF" when starting the hybrid control system. Ready Signal Status of the ready signal/OFF, ON or Unknown OFF: Hybrid control system off ON: Hybrid control system on (READY ON) Unknown: Other - Vehicle Speed Signal Vehicle moving or stationary/Stop or Run Stop: Vehicle stopped Run: Vehicle moving at 5 km/h (3 mph) or more - Shift P Signal Pulse Status of the shift P signal pulse/Normal1, Normal2, Normal3, Unknown, Error1, Error2 or Error3 Normal1: Signal normal and park (P) state cannot be determined Normal2: Signal normal and park (P) selected Normal3: Signal normal and R, N, D or B selected Unknown: Other Error1: Signal abnormal and park (P) state cannot be determined Error2: Signal abnormal and park (P) selected Error3: Signal abnormal and R, N, D or B selected Use this item to determine if the P position signal is malfunctioning. Power Supply Condition State of power supply/All OFF, ACC ON, IG1 ON, IG2 ON, ST ON All OFF: Power switch off (power supply off) ACC ON: Power switch on (ACC) (ACC relay on) IG1 ON: Power switch on (IG) (IG1 relay on) IG2 ON: Power switch on (IG) (IG2 relay on) ST ON: Starting hybrid control system Since "IG1 ON" and "IG2 ON" turn "on" at approximately the same time, "IG1 ON" may not be displayed ("IG1 ON" turns on for a very short time). Powertrain Type Vehicle identification/Cnv-MT, Cnv-AT, Cnv-MMT, HV-AT, S&S-MT, S&S-AT, S&S-MMT HV-AT: Hybrid A/T (A/T vehicle equipped with hybrid system) - IG1 Circuit IG1 relay coil circuit malfunction/OK or NG OK: Circuit normal NG: Circuit malfunctioning Use this item when determining whether the IG1 relay is malfunctioning. The hybrid control system cannot be started when this item displays "NG". IG2 Circuit IG2 relay coil circuit malfunction/OK or NG OK: Circuit normal NG: Circuit malfunctioning Use this item when determining whether the IG2 relay is malfunctioning. The hybrid control system cannot be started when this item displays "NG". Starter SW Sig Mismatch Power switch signal 1 and 2 mismatch/No or Yes No: Switch normal Yes: Switch malfunctioning (power switch signal 1 and 2 do not match) The hybrid control system can be started, even if this item displays "Yes". Park Signal Mismatch Park (P) signal malfunction/No or Yes No: Signal normal Yes: Signal malfunction (CAN communication and direct line signal do not match) The hybrid control system can be started, even if this item displays "Yes". Key Certif Wait T-Out Key verification malfunction/No or Yes No: Verification normal Yes: Verification error (detected when ID code from key and ID stored in certification ECU (smart key ECU assembly) do not match) The hybrid control system can be started, even if this item displays "Yes". Number of Diagnosis Code Number of DTCs/0 to 255 Number of DTCs will be displayed - Enter the following menus: Body Electrical / Smart Key / Data List. Read the Data List according to the display on the Techstream. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Ignition Switch State of certification ECU (smart key ECU assembly) IG power supply input/OFF or ON OFF: Power switch off ON: Power switch on (IG) This item displays "OFF" when the power switch is on (ACC). # Code Number of DTCs/0 to 255 - - Immobiliser Engine immobiliser system status determined by certification ECU (smart key ECU assembly) / Set or Unset Set: Engine immobiliser set (hybrid control system start prohibited) (power switch off or driver door closed and open with power switch on (ACC)) Unset: Engine immobiliser unset (hybrid control system start permitted) (power switch on (IG)) When the engine immobiliser system does not change to the "unset" state, this item can be used to determine if the cause is the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU). Steering Lock Sleep Cond Transmission control ECU assembly sleep condition/Yes or No - - Steering Lock Start Cond Transmission state of transmission control ECU assembly wake up signal/No or Yes No: Wake up signal not transmitted Yes: Wake up signal transmitted - Engine Start Condition State of hybrid control system start permission signal determined by transmission control ECU assembly and sent to certification ECU (smart key ECU assembly)/NG or OK NG: Hybrid control system start prohibited OK: Hybrid control system start permitted When this item displays "OK", the certification ECU (smart key ECU assembly) has received an unlock confirmation signal from the transmission control ECU assembly and has permitted hybrid control system start. The hybrid control system cannot be started when this item displays "NG". Engine Start Request Reception state of hybrid control system start permission signal determined by ID code box and sent to certification ECU (smart key ECU assembly)/OK or NG OK: Receiving signal NG: Not receiving signal When this item displays "OK", the certification ECU (smart key ECU assembly) has received engine start request signal from the ID code box and has permitted hybrid control system start. The hybrid control system cannot be started when this item displays "NG". S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box/OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the certification ECU (smart key ECU assembly) or ID code box is not registered or the certification ECU (smart key ECU assembly) or ID code box is malfunctioning. The gearshift control cannot be locked. The gearshift control cannot be unlocked (the hybrid control system cannot be started). L Code Check Verification result between ID code box and transmission control ECU assembly/OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the ID code box or transmission control ECU assembly is not registered or the ID code box or transmission control ECU assembly is malfunctioning. The gearshift control cannot be locked. The gearshift control cannot be unlocked (the hybrid control system cannot be started). Unlock Request Receive Reception state of gearshift control unlock command signal sent to ID code box determined by certification ECU (smart key ECU assembly)/OK or NG HINT: The reception state is maintained for 10 seconds. OK: Within 10 seconds of turning power switch on (IG) or on (ACC) or starting hybrid control system NG: Except above If the unlock signal has not been received, the hybrid control system cannot be started. If this item does not change to "OK" even though the gearshift control unlock conditions are met, the certification ECU (smart key ECU assembly) or transmission control ECU assembly may be malfunctioning. Lock Request Receive Reception state of gearshift control lock command signal sent to ID code box determined by certification ECU (smart key ECU assembly)/OK or NG OK: Within 10 seconds of opening any door with power switch off and park (P) selected NG: Except above If this item does not change to "OK" even though the gearshift control lock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning. S Code Check (Past) Verification result between certification ECU (smart key ECU assembly) and ID code box (Past)/OK or NG (Past) OK: Verification result normal NG (Past): Verification result abnormal (Past) - L Code Check (Past) Verification result between ID code box and transmission control ECU assembly (Past)/OK or NG (Past) OK: Verification result normal NG (Past): Verification result abnormal (Past) - Steering Lock State of whether transmission control ECU assembly has determined gearshift control is locked/Unset or Set Unset: Gearshift control unlocked Set: Gearshift control locked If this item displays "Unset", the gearshift control does not lock. Steering Unlock State of whether transmission control ECU assembly has determined gearshift control is unlocked/Unset or Set Unset: Gearshift control locked Set: Gearshift control unlocked If this item displays "Unset", the gearshift control does not unlock (hybrid control system cannot be started). COMBINATION METER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Vehicle Speed Meter Vehicle speed / Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) Almost the same as actual vehicle speed
2. ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relay, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests. Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Active Test. Perform the Active Test according to the display on the Techstream. POWER SOURCE CONTROL Tester Display Test Part Control Range Diagnostic Note Indicator Condition Power switch indicator Green/Red/No Sig Power switch on (READY) Enter the following menus: Body Electrical / Smart Key / Active Test. Perform the Active Test according to the display on the Techstream. SMART KEY Tester Display Test Part Control Range Diagnostic Note Power / Engine SW Light Power switch illumination ON/OFF

DIAGNOSTIC TROUBLE CODE CHART

SMART KEY SYSTEM (FOR START FUNCTION)

See also:
• INITIALIZATION
• REGISTRATION
• DATA LIST / ACTIVE TEST
• DIAGNOSIS SYSTEM
• DIAGNOSTIC TROUBLE CODE CHART
• DIAGNOSTIC TROUBLE CODE CHART
• Power Source Mode does not Change to ON (IG and ACC)
• GENERAL INFORMATION
• DTC CHECK / CLEAR
• DIAGNOSTIC TROUBLE CODE CHART
• PROBLEM SYMPTOMS TABLE
• OPERATION CHECK
• DATA LIST / ACTIVE TEST