Smart Key System (keyless Start) (diagnsostics - Introduction) (except Phv) Toyota Prius PHV pre-III

PRECAUTION

1. WHEN DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following system after the cable is reconnected. System Name See Procedure Advanced Parking Guide System Refer to «INITIALIZATION»(/toyota/prius-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-except-phv__initialization) The power source mode (off, on (ACC), on (IG)) is always retained in memory by the vehicle. If the auxiliary battery is disconnected, the power source mode that was present before disconnection will be restored after the auxiliary battery is reconnected. Be sure to turn the power switch off (change the power source mode to off) before disconnecting the cable from the negative (-) auxiliary battery terminal. Be careful if the power source mode of a vehicle with a discharged auxiliary battery is not known. After the cable is reconnected to the negative (-) auxiliary battery terminal, the hybrid control system may not start on the first attempt. This is not a malfunction. The hybrid control system will start normally for subsequent attempts. 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)".
2. 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.
3. 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»(/toyota/prius-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-keyless-start-diagnsostics-introduction-except-phv) . 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.
4. 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.
5. 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.

Scheme 1

Scheme 2

Scheme 3

Scheme 4

COMMUNICATION TABLE

1. *1: w/ Automatic Light Control System
2. *2: w/o Automatic Light Control System

Scheme 5

Scheme 6

Scheme 7

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)".
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.
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. Based on these results, 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.
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 1 hour has elapsed with the power switch on (ACC) or 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 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.

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. Use the following procedure to troubleshoot the 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 in problem analysis: What Vehicle model, system name When Date, time, occurrence frequency Where Road conditions Under what conditions? Running conditions, driving conditions, weather conditions How did it happen? Problem symptoms NEXT: Go to next step
3. INSPECT AUXILIARY BATTERY VOLTAGE Standard Voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step. NEXT: Go to next step
4. CHECK CAN COMMUNICATION SYSTEM* Use the Techstream to check if the CAN communication system is functioning normally. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-phv/pre-iii-2010-2011/remont/communication-devices/#can-communication-system-diagnostics-introduction-except-phv__how-to-proceed-with-troubleshooting) . Result Result Proceed to CAN communication DTC is not output A CAN communication DTC is output B B --> GO TO CAN COMMUNICATION SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-phv/pre-iii-2010-2011/remont/communication-devices/#can-communication-system-diagnostics-introduction-except-phv__diagnostic-trouble-code-chart) A: Go to next step
5. CHECK LIN COMMUNICATION SYSTEM* Use the Techstream to check if the LIN communication system (LIN) is functioning normally. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-phv/pre-iii-2010-2011/remont/communication-devices/#lin-communications-diagnostics-introduction-except-phv__how-to-proceed-with-troubleshooting) . Result Result Proceed to LIN communication DTC is not output A LIN communication DTC is output B B --> GO TO LIN COMMUNICATION SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-phv/pre-iii-2010-2011/remont/communication-devices/#lin-communications-diagnostics-introduction-except-phv__diagnostic-trouble-code-chart) A: Go to next step
6. CHECK FOR DTC (for Entry Function)* Check for DTC and note any codes that are output. Refer to «DTC CHECK / CLEAR»(/toyota/prius-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-keyless-start-diagnsostics-introduction-except-phv__dtc-check-clear) . Clear the DTC. Recheck for DTCs. 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-phv/pre-iii-2010-2011/remont/door-locks-anti-theft-systems/#smart-key-system-entry-function-diagnostics-introduction-except-phv__diagnostic-trouble-code-chart) A: Go to next step
7. CHECK FOR DTC (for Start Function)* Check for DTC and note any codes that are output. Refer to «DTC CHECK / CLEAR»(/toyota/prius-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-keyless-start-diagnsostics-introduction-except-phv__dtc-check-clear) . Clear the DTC. Recheck for DTCs. 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-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-keyless-start-diagnsostics-introduction-except-phv__diagnostic-trouble-code-chart) A: Go to next step
8. INSPECT BASIC OPERATION Check that the hybrid control system starts normally when the power switch is pushed while the brake pedal is depressed and park (P) is selected. Check that the power source mode can be changed by pushing the power switch. HINT: Without depressing the brake pedal, push the power switch repeatedly. The power source mode should change from off to on (ACC), to on (IG) and back to off. With the brake pedal depressed, push the power switch. The hybrid control system should start regardless of the original power source mode. OK Hybrid control system can start normally. NEXT: Go to next step
9. 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 11 A: Go to next step
10. OVERALL ANALYSIS AND TROUBLESHOOTING* Terminals of ECU. Refer to «TERMINALS OF ECU»(/toyota/prius-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-keyless-start-diagnsostics-introduction-except-phv) Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST»(/toyota/prius-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-keyless-start-diagnsostics-introduction-except-phv__data-list-active-test) NEXT: Go to next step
11. REPAIR OR REPLACE NEXT: Go to next step
12. CONFIRMATION TEST NEXT --> END

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 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»(/toyota/prius-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-keyless-start-diagnsostics-introduction-except-phv) . 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.

PROBLEM SYMPTOMS TABLE

HINT

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.

SMART KEY SYSTEM

1. *1: w/o Entry Function

Scheme 8

Scheme 9

Scheme 10

Scheme 11

Scheme 12

Scheme 13

Scheme 14

Scheme 15

Scheme 16

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 Wiring Color Terminal Description Condition Specified Condition A22-2 (IG2D) - Body ground V - Body ground IG2 relay operation signal Always 131 to 230 ohms A22-23 (STP) - Body ground L - Body ground Stop light switch signal Brake pedal depressed 11 to 14 V A22-23 (STP) - Body ground L - Body ground Stop light switch signal Brake pedal released Below 1 V L5-1 (AM22) - Body ground W - Body ground +B power supply Always 9.5 to 16 V L6-7 (AM21) - Body ground W - Body ground +B power supply Always 9.5 to 16 V L5-6 (E1) - Body ground BR - Body ground Ground Always Below 1 ohms L6-4 (E12) - Body ground BR - Body ground Ground Always Below 1 ohms L6-24 (CA1L) - Body ground W - Body ground CAN communication line Always 10 kohms or higher L6-25 (CA1H) - Body ground B - Body ground CAN communication line Always 10 kohms or higher L6-17 (SSW2) - Body ground Y - Body ground Power switch signal Power switch pushed Below 1 ohms L6-17 (SSW2) - Body ground Y - Body ground Power switch signal Power switch not pushed 10 kohms or higher L5-7 (SSW1) - Body ground B - Body ground Power switch signal Power switch pushed Below 1 ohms L5-7 (SSW1) - Body ground B - Body ground Power switch signal Power switch not pushed 10 kohms or higher L6-1 (ACCD) - Body ground G - Body ground ACC relay operation signal Always 50.625 to 61.875 ohms L6-2 (IG1D) - Body ground B - Body ground IG1 relay operation signal Always 50.625 to 61.875 ohms L6-11 (LIN2) - Body ground 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 Wiring Color Terminal Description Condition Specified Condition A22-2 (IG2D) - L5-6 (E1) V - BR IG2 signal Power switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more A22-2 (IG2D) - L5-6 (E1) V - BR IG2 signal Power switch on (ACC) Below 1 V L5-9 (INDW) - L5-6 (E1) G - BR Warning signal Brake pedal depressed, park (P) selected, power switch on (ACC, IG) 8 to 14 V A22-22 (PCON) - L5-6 (E1) LG - BR P position signal Park (P) selected Pulse generation ( (Scheme 9)waveform 1) A22-28 (PPOS) - L5-6 (E1) W - BR P position signal Park (P) selected Pulse generation ( (Scheme 9)waveform 1) L6-17 (SSW2) - L5-6 (E1) Y - BR Power switch signal Power switch not pushed Output voltage at terminal AM21 or AM22 is -2 V or more L6-17 (SSW2) - L5-6 (E1) Y - BR Power switch signal Power switch pushed Below 1 V L5-7 (SSW1) - L5-6 (E1) B - BR Power switch signal Power switch not pushed Output voltage at terminal AM21 or AM22 is -2 V or more L5-7 (SSW1) - L5-6 (E1) B - BR Power switch signal Power switch pushed Below 1 V L6-1 (ACCD) - L5-6 (E1) G - BR ACC signal Power switch on (ACC) Output voltage at terminal AM21 or AM22 is -2 V or more L6-1 (ACCD) - L5-6 (E1) G - BR ACC signal Power switch off Below 1 V L6-2 (IG1D) - L5-6 (E1) B - BR IG1 signal Power switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more L6-2 (IG1D) - L5-6 (E1) B - BR IG1 signal Power switch on (ACC) Below 1 V L5-8 (INDS) - L5-6 (E1) R - BR Vehicle condition signal Brake pedal depressed, park (P) selected 8 to 14 V L5-14 (SPDI) - L5-6 (E1) V - BR Vehicle speed signal Power switch on (IG), wheel rotated slowly Pulse generation ( (Scheme 10)waveform 2) L6-20 (IMO) - L5-6 (E1) L - BR Immobilizer communication status Immobilizer communicating Pulse generation ( (Scheme 11)waveform 3) L6-21 (IMI) - L5-6 (E1) R - BR Immobilizer communication status Immobilizer communicating Pulse generation ( (Scheme 12)waveform 4) If the result is not as specified, the ECU may have a malfunction. 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 5 V/DIV., 20 ms./DIV. Vehicle Condition Power switch on (IG) Waveform 2 Tester Connection L5-14 (SPDI) - L5-6 (E1) Tool Setting 5 V/DIV., 10 ms./DIV. Vehicle Condition Driving at approx. 20 km/h (12 mph) HINT: The wavelength becomes shorter as the vehicle speed increases. Waveform 3 Tester Connection L6-20 (IMO) - L5-6 (E1) Tool Setting 5 V/DIV., 500 ms./DIV. Vehicle Condition Within 3 seconds after power switch on (READY), or within 3 seconds after power switch first turned on (IG) after battery disconnected and connected Waveform 4 Tester Connection L6-21 (IMI) - L5-6 (E1) Tool Setting 5 V/DIV., 50 ms./DIV. Vehicle Condition Power switch on (IG)
2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Disconnect the L62 connector. Measure the voltage and resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition L62-1 (+B) - Body ground B - Body ground +B power supply Always 11 to 14 V L62-9 (CANH) - Body ground BE - Body ground CAN communication line Always 10 kohms or higher L62-10 (CANL) - Body ground P - Body ground CAN communication line Always 10 kohms or higher L62-15 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms L62-16 (IG) - Body ground BE - Body ground IG power supply Power switch on (IG) 11 to 14 V L62-29 (LIN) - Body ground 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 L62 connector. Check for pulses according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition L62-34 (EFII) - L62-15 (E)*1 L - W-B Immobilizer communication status Immobilizer communicating Pulse generation ( (Scheme 14)waveform 1) L62-35 (EFIO) - L62-15 (E)*1 R - W-B Immobilizer communication status Immobilizer communicating Pulse generation ( (Scheme 14)waveform 1) *1: w/ Automatic Light Control System If the result is not as specified, the ECU may have a malfunction. Using an oscilloscope, check the signal waveform of the ECU. Waveform 1 Tester Connection CH1: L62-34 (EFII) - L62-15 (E) CH2: L62-35 (EFIO) - L62-15 (E) Tool Setting 5 V/DIV., 200 ms./DIV. Vehicle Condition Power switch off --> Power switch on (IG) --> Power switch on (READY)
3. CHECK TRANSMISSION CONTROL ECU ASSEMBLY Disconnect the A23 and A24 connectors. Measure the voltage and resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition A24-1 (E1) - Body ground BR - Body ground Ground Always Below 1 ohms A24-5 (E02) - Body ground W-B - Body ground Ground Always Below 1 ohms A24-6 (E01) - Body ground W-B - Body ground Ground Always Below 1 ohms A23-16 (+B) - Body ground L - Body ground Ignition power supply Power switch on (IG) 11 to 14 V A23-16 (+B) - Body ground L - Body ground Ignition power supply Power switch off Below 1 V A23-15 (BATT) - Body ground SB - Body ground +B power supply Except power switch on (READY) 11 to 14 V A23-15 (BATT) - Body ground SB - Body ground +B power supply Power switch on (READY) 11 to 15.5 V A24-15 (CA1L) - Body ground BR - Body ground CAN communication line Always 10 kohms or higher A24-16 (CA1H) - Body ground Y - Body ground CAN communication line Always 10 kohms or higher A24-24 (LIN) - Body ground 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.
4. CHECK ID CODE BOX (IMMOBILIZER CODE ECU) Disconnect the L10 connector. Measure the resistance and voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition L10-1 (+B) - L10-8 (GND) B - W-B +B power supply Always 11 to 14 V L10-8 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms L10-3 (LIN1) - Body ground 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.

DIAGNOSIS SYSTEM

1. DESCRIPTION Push-button start function data and the Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the function 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-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-except-phv) .
3. INSPECT AUXILIARY BATTERY VOLTAGE Measure the auxiliary battery voltage. Standard Voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the auxiliary battery.

DTC CHECK / CLEAR

1. CHECK DTC 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 DTC by following the prompts on the Techstream screen. HINT: Refer to the Techstream operator's manual for further details.
2. CLEAR DTC 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 DTC by following the directions on the Techstream screen. 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 / Data List. 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 Stop light switch 1/ON or OFF ON: Brake pedal depressed OFF: Brake pedal released - Start Switch1 Start switch 1/ON or OFF ON: Power switch pushed OFF: Power switch not pushed - Start Switch2 Start switch 2/ON or OFF ON: Power switch pushed OFF: Power switch not pushed - Latch Circuit Latch circuit/ON or OFF ON: Power switch on (IG) or on (READY) OFF: Power switch off or on (ACC) - IG1 Relay Monitor (Outside) IG1 outer relay monitor/ON or OFF ON: Power switch on (IG) OFF: Power switch off - IG1 Relay Monitor (Inside) IG1 inner relay monitor/ON or OFF ON: Power switch on (IG) OFF: Power switch off - IG2 Relay Monitor (Outside) IG2 outer relay monitor/ON or OFF ON: Power switch on (IG) OFF: Power switch off - IG2 Relay Monitor (Inside) IG2 inner relay monitor/ON or OFF ON: Power switch on (IG) OFF: Power switch off - Starter Request Signal Starter request signal monitor/ON or OFF ON: ST relay on OFF: ST relay off - ACC Relay Monitor ACC relay monitor/ON or OFF ON: Power switch on (ACC) OFF: Power switch off - Ready Signal Status of the ready signal/ON or OFF ON: Hybrid control system on (on (READY)) OFF: Hybrid control system off - Vehicle Speed Signal Vehicle speed signal/Stop or Run Stop: Vehicle stopped Run: Vehicle running - Shift P Signal Pulse Status of the shift P signal pulse/Unknown, Error2, Normal2, Error1, Normal3, Error3 or Normal1 Unknown: Other Error2: Signal abnormal and park (P) selected Normal2: Signal normal and park (P) selected Error1: Signal abnormal and park (P) state cannot be determined Normal3: Signal normal and R, N, D or B selected Error3: Signal abnormal and R, N, D or B selected Normal1: Signal normal and park (P) state cannot be determined - Power Supply Condition Power supply condition/All OFF, ACC ON, IG1 ON, IG2 ON, ST ON All OFF: All relays off ACC ON: ACC relay on IG1 ON: IG1 relay on IG2 ON: IG2 relay on ST ON: ST request signal on - Powertrain Type Status of the powertrain type/HV-AT, Conventional-AT, Conventional-MT, Conventional-MMT HV-AT - IG1 Circuit Status of the IG1 relay activation circuit/OK or NG OK: IG1 relay activation circuit normal NG: IG1 relay activation circuit abnormal - IG2 Circuit Status of the IG2 relay activation circuit/OK or NG OK: IG2 relay activation circuit normal NG: IG2 relay activation circuit abnormal - Starter Switch Signal Mismatch Power switch error detection/No or Yes No: Power switch error not detected Yes: Power switch error detected - Park Signal Mismatch Status of the park signal mismatch/No or Yes No: Park signal mismatch no detected Yes: Park signal mismatch detected - Key Certification Waiting Timed Out Key certification error detection/No or Yes No: Key certification error not detected Yes: Key certification error detected - Number of Diagnosis Code Number of diagnosis code/Min.: 0, MAX.: 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 Power switch/ON or OFF ON: Power switch on (IG) OFF: Power switch off - Key Low Battery Low key battery/Yes or No Yes: Key battery voltage low No: Key battery voltage normal - # Code Number of DTC recorded/Min.: 0, Max.: 225 Number of DTCs displayed - Steering Lock Sleep Cond Transmission control ECU sleep condition/Yes or No Yes: Transmission control ECU sleep mode can be entered No: Transmission control ECU sleep mode cannot be entered - Steering Lock Start Cond Transmission control ECU start signal/Yes or No Yes: Transmission control ECU sent a start signal No: Transmission control ECU did not send a start signal - Engine Start Condition Hybrid control system start condition/OK or NG OK: Hybrid control system allowed to start NG: Hybrid control system not allowed to start - Engine Start Request Start request condition signal/OK or NG OK: Start request condition signal received NG: Start request condition signal not received - 3bit Code Request Status of the 3-bit code request/OK or NG OK: 3-bit code request signal received NG: 3-bit code request signal not received - S Code Check S code certification result/OK or NG OK: Certification confirmed NG: Certification not confirmed - L Code Check L code certification result/OK or NG OK: Certification confirmed NG: Certification not confirmed - Unlock Request Receive Status of the gearshift control unlock request receive/OK or NG OK: Gearshift control unlock request signal received NG: Gearshift control unlock request signal not received - Lock Request Receive Status of the gearshift control lock request receive/OK or NG OK: Gearshift control lock request signal received NG: Gearshift control lock request signal not received - S Code Check (Past) S code certification result (Past)/OK or NG OK: Certification confirmed (past) NG: Certification not confirmed (past) - L Code Check (Past) L code verification result (Past)/OK or NG OK: Certification confirmed (past) NG: Certification not confirmed (past) - EFI Code Receive SFI communication (when DTC stored)/OK or NG OK: SFI code received NG: SFI code not received - EFI Communication SFI communication /OK or NG OK: SFI communication normal NG: SFI communication abnormal - Ignition Available Area Ignition available area/Front or All Customization status displayed
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 Operate with power switch on (IG) and the vehicle stopped.

DIAGNOSTIC TROUBLE CODE CHART

HINT

If a trouble code is stored during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the information below.

POWER MANAGEMENT CONTROL ECU

See also:
• INITIALIZATION
• HOW TO PROCEED WITH TROUBLESHOOTING
• DIAGNOSTIC TROUBLE CODE CHART
• HOW TO PROCEED WITH TROUBLESHOOTING
• DIAGNOSTIC TROUBLE CODE CHART
• DIAGNOSTIC TROUBLE CODE CHART
• Room Oscillator does not Recognize Key
• Power Source Mode does not Change to ON (IG and ACC)
• GENERAL INFORMATION
• SYSTEM DESCRIPTION
• DTC CHECK / CLEAR
• DIAGNOSTIC TROUBLE CODE CHART
• DATA LIST / ACTIVE TEST