Smart Key System (For Start Function) (Diagnostics - Introduction) (Base): Other Toyota Prius Plug-in

PRECAUTION

1. PRECAUTIONS FOR PUSH-BUTTON START FUNCTION Before starting hybrid control system, firmly depress the brake pedal until the indicator in the power switch turns green. The smart key system, wireless door lock control system and engine immobilizer system may not operate normally, or the size of the operation area may decrease in the following situations: When the smart key battery is depleted. When any facility that generates strong radio waves or electrical noise such as a TV tower, power plant, gas station, broadcast station, large video-billboard or airport are located near the inspection site. When the key is located near a wireless device such as a radio, cellular phone or cordless telephone. When the smart key is in contact with or covered with a metal object similar to the following: Metal or aluminum plated card Aluminum film from a cigarette box Metallic wallet or bag Coins Heating pad Media such as CDs or DVDs When a wireless remote is operated near the vehicle. When the key is carried with following items: Electronic key or wireless remote from another vehicle PC or similar handheld device Digital audio player Portable game device When a metallic film is applied to the rear glass.
2. WHEN KEY BATTERY IS LOW When the key battery is depleted, the hybrid control system cannot be started using the smart function. For how to start the hybrid control system when the key battery is depleted, see Description. Refer to «SYSTEM DESCRIPTION»(ref-551394-S22945162632013051500000) . If the electrical key is held near the power switch to start the hybrid control system when the electrical key battery is depleted, the following warnings will sound: Driver door open --> closed An exit warning will sound if R, N, D or B is selected and the power source (power switch) is in a mode other than off. An exit warning will sound if park (P) is selected and the power source is in a mode other than off. Doors other than the driver door open --> closed A warning will sound to indicate that the electrical key has been taken out of the vehicle. These warnings will sound because it is not possible for the vehicle to determine if the key is present in the vehicle (due to the depleted key battery). These warnings do not indicate system malfunctions.
3. EMERGENCY HYBRID CONTROL SYSTEM STOP CONTROL If it is necessary to stop the hybrid control system in an emergency while driving the vehicle, push and hold the power switch for more than 3 seconds. While driving, the power switch should only be operated in the event of on emergency. NOTE: If the hybrid control system stops while the vehicle is being driven, this could lead to an accident.
4. EMERGENCY HYBRID CONTROL SYSTEM START CONTROL If there is a malfunction in the stop light switch or STOP fuse, their signals may not be correctly transmitted to the power management control ECU. This may result in the hybrid control system not starting even if the power switch is pressed while the brake pedal is depressed and park (P) is selected. To activate the hybrid control system: Push the P position switch. Parking brake pedal is depressed. Turn the power switch from off to on (ACC). Brake pedal is depressed. Press and hold the power switch for 15 seconds or more.

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COMMUNICATION TABLE

1. *1: for Canada
2. *2: except Canada

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1. PUSH-BUTTON START DESCRIPTION The push-button start uses a push-type power switch, which the driver can operate by merely carrying the electrical key. This system consists primarily of the power management control ECU, power switch, transmission control ECU assembly, electrical key, ACC relay, P/POINT relay, IG1 NO. 1 relay, IG1 NO. 2 relay, IG1 NO. 3 relay, IG2 relay, ID code box (immobilizer code ECU)* and certification ECU (smart key ECU assembly). The power management control ECU controls the system. This function operates in cooperation with the smart key system. HINT: In this chapter, the expression "power source" has been used in some locations to allow precise explanations. The power source mode is also expressed using conventional expressions such as "power switch off", "power switch on (ACC)" and "power switch on (IG)". *: for Canada
2. FUNCTION OF MAIN COMPONENTS Component Function Power Switch Transponder Key Amplifier Transmits power switch signal to power management control ECU. Informs driver of power source mode or system abnormality with illumination stage of indicator light. Receives ID code and transmits it to certification ECU (smart key ECU assembly) when key battery is low. Electrical Key Receives signals from oscillators and returns ID code to entry door control receiver. Electrical Key Oscillator Console and Rear Seat Receives request signals from certification ECU (smart key ECU assembly) and forms detection area in vehicle. Power Management Control ECU Changes power source mode in 4 stages (off, on (ACC), on (IG), on (READY) in accordance with shift position and state of stop light switch. Controls push-button start function in accordance with signals received from switches and each ECU. Power management control ECU and certification ECU (smart key ECU assembly) permit starting of hybrid control system after receiving unlock signal from transmission control ECU. Certification ECU (Smart Key ECU Assembly) Certifies ID code received from entry door control receiver and transmits the certification results to the ID code box (immobilizer code ECU)* and transmission control ECU assembly. Stop Light Switch Outputs state of brake pedal to power management control ECU. ID Code Box (Immobilizer Code ECU)* Receives gearshift control unlock or engine immobilizer unset signals from the certification ECU (smart key ECU assembly), certifies them, and transmits each unset signal to transmission control ECU assembly or power management control ECU. Transmission Control ECU Assembly Transmission control ECU locks/unlocks gearshift control based on lock/unlock request signals from certification ECU (smart key ECU assembly). Detects gearshift control lock/unlock status and transmits to other ECUs. Transmission control ECU activates the shift control actuator based on signals from the power management control ECU when gearshift control is unlocked. Transmission control ECU controls the application timing of current to the parking lock motor based on signals from the rotation angle sensor. *: for Canada
3. SYSTEM FUNCTION The electric controls of the push-button start function are described below: Control Outline Power switch control When the person carrying the key enters the vehicle and the brake pedal is depressed, the power management control ECU sends the key certification request signal to the certification ECU (smart key ECU assembly). On receiving the key certification request signal, the certification ECU (smart key ECU assembly) generates a request signal and sends it to the indoor electrical key oscillator. The indoor electrical key oscillator transmits the request signal in order to detect that the key is in the cabin. When the key receives the request signal, it sends back the response code and ID code. When the door control receiver assembly receives the signal from the key, it sends the ID code to the certification ECU (smart key ECU assembly). The ID code box verifies check results received from the certification ECU via LIN and sends them to the power management control ECU*. The power management control ECU authorizes the operation of the power switch. If the ID codes match, the certification ECU (smart key ECU assembly) sends the certification OK signal to the power management control ECU. Upon receiving the certification OK signal, the power management control ECU illuminates the power switch indicator light, changes the power source mode and starts the hybrid control system depending on how the power switch is operated. Diagnosis When the power management control ECU detects a malfunction, the power management control ECU diagnoses and memorizes information related to the fault. *: for Canada
4. CONSTRUCTION AND OPERATION Power Switch The power switch consists of a momentary type switch, 3 color (amber, green, greenish white) LEDs, and a transponder key amplifier. The greenish white LED is for illumination. The amber and green LEDs are for the indicator lights. The driver can check the present power source mode and whether the hybrid control system can start in accordance with the illumination state of the indicator light. When the power management control ECU detects an abnormality in the push-button start system, it makes the amber indicator light flash. If the hybrid control system stopped in this state, it may not be possible to restart it. Indicator Light Condition POWER SWITCH INDICATOR LIGHT CONDITION Power Source Mode/Condition Indicator Light Condition Brake Pedal Released Brake Pedal Depressed, Park (P) selected off off Turns on (Green) on (ACC, IG) Turns on (Amber) Turns on (Green) on (READY) off off System malfunction Flashes (Amber) for 15 sec. Flashes (Amber) for 15 sec. Power Management Control ECU The power management control ECU consists of the IG1 NO. 1, IG1 NO. 2, IG1 NO. 3, IG2, ACC, P/POINT relay actuation circuits and CPU. HINT: Before removing the auxiliary battery, make sure to turn the power switch off. The power management control ECU constantly stores the present power source mode in its memory. Therefore, if the power supply for the power management control ECU is interrupted by disconnecting the auxiliary battery, the power management control ECU restores the power source mode after the auxiliary battery is reconnected. For this reason, if the auxiliary battery is disconnected when the power switch is other than off, the power source mode will be restored to the vehicle at the same time the power source mode is restored to the power management control ECU (by reconnecting the auxiliary battery).
5. PUSH-BUTTON START FUNCTION OPERATION This system has different power source mode patterns depending on the brake pedal condition and shift lever position. Brake Pedal Shift Lever Power Source Mode Pattern Depressed P When the power switch is pushed once. off --> on (READY) Not depressed P Each time the power switch is pushed. off --> on (ACC) --> on (IG) --> off Except P Each time the power switch is pushed. on (ACC) --> on (IG) --> off - P When the power switch is pushed in the on (READY) condition. on (READY) --> off - Except P When the power switch is pushed in the on (READY) condition. on (READY) --> off When the key battery is low, the push-button start function can be operated by holding the key against the power switch. After approximately 20 minutes has elapsed with the power switch on (ACC) and park (P) selected, the power management control ECU will automatically cut the power supply (the power source mode will change to off). After approximately 1 hour has elapsed with the power switch on (IG) and park (P) selected, the power management control ECU will automatically cut the power supply (the power source mode will change to off). The illustration below shows the transition of power source modes. Transition of power source modes: HINT: While the vehicle is being driven normally, operation of the power switch is disabled. However, if the hybrid control system must be stopped in an emergency while the vehicle is being driven, pressing the power switch for 3 times quickly or pressing and holding the power switch for 2 seconds or more stops the hybrid control system. The power source mode will change from on (READY) to on (ACC).
6. WHEN KEY BATTERY IS LOW To operate the push-button start function when the key battery is low, hold the key close to the power switch with the brake pedal depressed. The power management control ECU transmits a key verification request signal to the certification ECU (smart key ECU assembly) when it receives the stop light switch signal. The certification ECU (smart key ECU assembly) does not receive an ID code response from the entry door control receiver, so it actuates the transponder key amplifier built into the power switch. The transponder key amplifier outputs an engine immobilizer radio wave to the key. The key receives the radio wave, and returns a radio wave response to the transponder key amplifier. The transponder key amplifier combines the key ID codes with the radio wave response, and transmits it to the certification ECU (smart key ECU assembly). The certification ECU (smart key ECU assembly) judges and verifies the ID code, and transmits a key verification OK signal to the power management control ECU. The buzzer in the combination meter sounds at the same time. After the buzzer sounds, if the power switch is pressed within 10 seconds with the brake pedal not depressed, the power source mode changes to on (ACC) or on (IG), the same as in the normal condition. HINT: The key (for card type) operation inspection can performed using the same procedure as for the key (for standard type).
7. DIAGNOSIS The power management control ECU can detect malfunctions in the push-button start function when the power source mode is on (IG). When the ECU detects a malfunction, the amber indicator light of the power switch flashes to warn the driver. At the same time, the ECU stores a 5-digit Diagnostic Trouble Code (DTC) in its memory. The indicator light warning continues for 15 seconds even after the power source mode is changed to off. The DTC can be read by connecting the Techstream to the DLC3. The push-button start function cannot be operated if a malfunction occurs.

CUSTOMIZE PARAMETERS

1. CUSTOMIZING FUNCTION WITH TECHSTREAM HINT: The items in the table below can be customized. NOTE: When the customer requests a change in a function, first make sure that the function can be customized. Be sure to make a note of the current setting before customizing. When troubleshooting a function, first make sure that the function is set to the default setting. Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Utility / Customize Setting. Select the setting by referring to the table below. SMART KEY / ACCESS Tester Display Default Content Setting Ignition Available Area (Entry ignition available area) All Function to choose the available area for electrical key to start the hybrid control system. Front or All* *: Weak radio waves will still be emitted from oscillators other than the front oscillator even when the "Front" customize setting is selected.
2. CUSTOMIZING FUNCTION WITH MULTI-DISPLAY HINT: The items in the table below can be customized. NOTE: When the customer requests a change in a function, first make sure that the function can be customized. Be sure to make a note of the current setting before customizing. When troubleshooting a function, first make sure that the function is set to the default setting. Customizing with the multi-display (w/ Navigation System (for Navigation Receiver Type) or w/ Audio and Visual System (w/o Daytime Running Light)) Turn the power switch on (IG). Enter the following menus: SETUP / Vehicle / Vehicle Customization / Door Lock Setting. Select the setting by referring to the table below. Display Default Content Setting Relevant ECU Key System with Elec. Key*1 Entry and Start System*2 On Function that enables or disables the smart key system. On or Off Certification ECU (smart key ECU assembly) *1: except Korea *2: for Korea Customizing with the multi-display (w/ Navigation System (for Radio and Display Type) or w/ Audio and Visual System (w/ Daytime Running Light)) Turn the power switch on (IG). Enter the following menus: SETUP / Vehicle. Select the setting by referring to the table below. Display Default Content Setting Relevant ECU Key System with Elec. Key*1 Entry and Start System*2 On Function that enables or disables the smart key system. On or Off Certification ECU (smart key ECU assembly) *1: except Korea *2: for Korea
3. CUSTOMIZING FUNCTION WITHOUT TECHSTREAM Performing the following procedure disables the smart key system. HINT: To start the hybrid control system while the smart key system is disabled, follow the procedure for when the key battery is low. Refer to «SYSTEM DESCRIPTION»(ref-551394-S22945162632013051500000) . The operation procedure is as follows: Precondition: Power switch off, driver door closed and unlocked. Push the unlock switch of the key once. Open the driver door within 5 seconds. Push the unlock switch of the key twice within 5 seconds. Close and open the driver door twice within 30 seconds. (Driver door: Close --> Open --> Close --> Open) Push the unlock switch of the key twice within 5 seconds. Close and open the driver door within 30 seconds. (Driver door: Close --> Open) Close the driver door within 5 seconds. When electrical key cancel is activated, the wireless door lock buzzer sounds twice. To return to the original condition, perform the procedure again. When the original condition is returned, the wireless door lock buzzer sounds once.