Smart Key System (for Start Function) (diagnostics - Introduction) Toyota Land Cruiser 200 рестайлинг

PRECAUTION

1. PRECAUTIONS FOR PUSH-BUTTON START FUNCTION: Before starting the engine, firmly depress the brake pedal until the indicator in the engine switch turns green. The power source mode (off, on (ACC), on (IG)) is always retained in memory by the vehicle. If the battery is disconnected, the power source mode that was present before the disconnection will be restored after the battery is reconnected. Be sure to turn the engine switch off before disconnecting the cable from the negative battery terminal. Be careful if the power source mode of a vehicle with a discharged battery is not known. After the battery is reconnected, be sure to wait 10 seconds or more before attempting to start the engine. The engine may not start immediately after the battery is reconnected. If the TOYOTA mark of the key is touched to the engine switch to start the engine when the key battery is depleted or affected by wave noise, etc., the following warnings will sound: Driver door open --> closed An exit warning will sound if the shift lever is in a position other than P and the power source is in a mode other than off. An exit warning will sound if the shift lever is in P 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 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.

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COMMUNICATION TABLE

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1. PUSH-BUTTON START DESCRIPTION The push-button start uses a push-type engine switch, which the driver can operate by merely carrying the key. This system consists primarily of the main body ECU, engine switch, ID code box (immobilizer code ECU), steering lock ECU, key, ACC relay, IG1 No. 3 relay, integration relay (IG2 relay) and certification ECU (smart key ECU assembly). The main body ECU controls the system. This function operates in cooperation with the smart key system. The table below shows the transition of the engine switch, which depends on whether the brake pedal is depressed or released. This system has different power source mode patterns depending on the brake pedal and shift lever conditions. Condition Power Source Mode Pattern Brake pedal not depressed, shift lever in P Each time engine switch is pushed off --> on (ACC) --> on (IG) --> off Brake pedal not depressed When engine switch is pushed in engine started condition Engine started --> off Brake pedal depressed, shift lever in P When engine switch is pushed once off --> engine start Brake pedal depressed, shift lever in P When engine switch is pushed in on (ACC) condition on (ACC) --> engine start Brake pedal depressed, shift lever in P When engine switch is pushed in on (IG) condition on (IG) --> engine start Brake pedal depressed When engine switch is pushed in engine started condition Engine started --> off When the battery of the key is low, the push-button start function can be operated by touching the key to the engine switch.
2. FUNCTION OF COMPONENT Component Function Engine Switch (Transponder Key Amplifier) Transmits engine switch signal to main body ECU. Informs driver of power source mode or system abnormality with indicator light illumination. Receives ID code and transmits it to certification ECU (smart key ECU assembly) when key battery is low or affected by wave noise, etc. Key Receives signals from oscillators and returns ID code to entry door control receiver. Indoor Key Oscillator Receives request signal from certification ECU (smart key ECU assembly) and forms detection area in vehicle interior. Door Control Receiver Receives ID code from key and transmits it to certification ECU (smart key ECU assembly). Main Body ECU Changes power source mode in 4 stages (off, on (ACC), on (IG), start) in accordance with state of park/neutral position switch. Controls push-button start function in accordance with signals received from switches and each ECU. Certification ECU (Smart Key ECU Assembly) Certifies ID code received from entry door control receiver and transmits certification results to ID code box (immobilizer code ECU) and steering lock ECU. Shift Lock Control ECU Outputs state of shift position to main body ECU. Stop Light Switch Outputs state of brake pedal to main body ECU. ID Code Box (Immobilizer Code ECU) Receives steering unlock or engine immobilizer unset signals from certification ECU (smart key ECU assembly), certifies them, and transmits each unset signal to steering lock ECU or ECM. ECM Receives engine start request signal from main body ECU, turns on ST relay, and starts engine. Receives signal from ID code box (immobilizer code ECU) and performs engine ignition and fuel injection.
3. SYSTEM FUNCTION The electric controls of the push-button start function are described below: Control Outline Engine Switch Control When the driver operates the engine switch with a key in driver possession, the certification ECU (smart key ECU assembly) starts the indoor key oscillator, which transmits a request signal to the key. Upon receiving this signal, the key transmits an ID code signal to the door control receiver. The ID code box (immobilizer code ECU) verifies the check results received from the certification ECU (smart key ECU assembly) via the LIN line and sends them to the main body ECU. Based on these results, the main body ECU authorizes operation of the engine switch. Diagnosis When the main body ECU detects a malfunction, the main body ECU diagnoses and memorizes which section failed.
4. CONSTRUCTION AND OPERATION Engine switch: The engine switch consists of a momentary type switch, 3 colored LED (amber, green, greenish white) and the transponder key amplifier. The greenish white LED is for illumination. The amber and green LEDs are for the indicator light. The driver can check the present power source mode and whether the engine can start or not in accordance with the illumination state of the indicator light. When the main body ECU detects an abnormality in the smart key system, it makes the amber indicator light flash. If the engine is stopped in this state, it might not be possible to restart it. Indicator light condition: ENGINE SWITCH INDICATOR LIGHT CONDITION Power Source Mode/Condition Indicator Light Condition Brake pedal released Brake pedal depressed, shift lever in P Off Off Illuminates (green) On (ACC, IG) Illuminates (amber) Illuminates (green) Engine running Off Off Steering lock not unlocked Flashes (green) for 30 seconds Flashes (green) for 30 seconds System malfunction Flashes (amber) for 15 seconds Flashes (amber) for 15 seconds Stop light switch malfunction with shift lever in P Flashes (green) for 15 seconds Flashes (green) for 15 seconds Main body ECU: The main body ECU consists of the IG1 No. 3 relay and ACC relay actuation circuits and CPU.
5. SYSTEM NOT OPERATING NORMALLY (DUE TO KEY BATTERY DEPLETION, ELECTRICAL NOISE, ETC.) To operate the push-button start function when the key battery is low or affected by wave noise, etc., touch the TOYOTA mark of the key to the engine switch while depressing the brake pedal with the shift lever in P. The main body ECU transmits a key verification request signal from the stop light switch to the certification ECU (smart key ECU assembly). The certification ECU (smart key ECU assembly) does not receive an ID code response from the door control receiver, so it activates the transponder key amplifier built into the engine 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 main body ECU. The buzzer in the combination meter sounds at the same time. After the buzzer sounds, with the shift lever in P, if the engine switch is pressed within 10 seconds with the brake pedal not depressed, the power source mode changes to on (ACC) or on (IG), as in the normal condition.
6. DIAGNOSIS The main body 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 engine switch flashes to warn the driver. At the same time, the ECU stores the 5-digit DTC (Diagnostic Trouble Code) in 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 these procedures to troubleshoot the push-button start function.
2. *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. INSPECT BATTERY VOLTAGE Standard voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding. NEXT: Go to next step
3. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* Using the Techstream, check if the CAN communication system is functioning normally. Refer to «DIAGNOSIS SYSTEM»(/toyota/land-cruiser/200-2012-2015/remont/communication-devices/#can-communication-system-diagnostics-introduction__diagnosis-system) . RESULT Result Proceed to DTC is not output A DTC is output B B --> GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/communication-devices/#can-communication-system-diagnostics-introduction__diagnostic-trouble-code-chart) A: Go to next step
4. CHECK FOR DTC* Check for DTCs and note any stored DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__dtc-check-clear) . Clear the DTCs. Check whether the same DTC(s) relevant to the SFI system or smart key system recurs by reproducing the symptoms indicated by the noted DTC(s) in the first step above. RESULT Result Proceed to DTC output does not reoccur A SFI system DTC output reoccurs B Smart key system DTC output reoccurs C B --> GO TO SFI SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart) C --> GO TO STEP 7 A: Go to next step
5. 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 7 A: Go to next step
6. OVERALL ANALYSIS AND TROUBLESHOOTING* Terminals of ECU. Refer to «TERMINALS OF ECU»(/toyota/land-cruiser/200-2012-2015/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction) Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST»(/toyota/land-cruiser/200-2012-2015/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__data-list-active-test) NEXT: Go to next step
7. ADJUST, REPAIR OR REPLACE NEXT: Go to next step
8. CONFIRMATION TEST NEXT --> END

CUSTOMIZE PARAMETERS

1. CUSTOMIZING FUNCTION WITH TECHSTREAM (REFERENCE) 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 settings 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Customize Setting. Select the setting by referring to the table below. SMART KEY / ACCESS Display Default Content Setting Ignition Available Area All Function to choose the available area for the key to start the engine and cancel the steering lock. Front/All

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 (FOR START FUNCTION)

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1. CHECK MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) Disconnect the E1, E2 and 2D main body ECU connectors. Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E1-6 (AM1) - Body ground W - Body ground +B power supply Always 11 to 14 V E2-1 (AM2) - Body ground W - Body ground +B power supply Always 11 to 14 V E1-17 (SSW1) - Body ground B - Body ground Engine switch 1 input Engine switch pushed Below 1 ohms E1-17 (SSW1) - Body ground B - Body ground Engine switch 1 input Engine switch not pushed 10 kohms or higher E1-16 (SSW2) - Body ground B - Body ground Engine switch 2 input Engine switch pushed Below 1 ohms E1-16 (SSW2) - Body ground B - Body ground Engine switch 2 input Engine switch not pushed 10 kohms or higher 2D-62 (GND2) - Body ground W-B - Body ground Ground Always Below 1 ohms 2D-20 (LIN1) - Body ground GR - Body ground LIN line Always 10 kohms or higher If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the E1, E2 and 2D main body ECU connectors. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E1-22 (ACCD) - 2D-62 (GND2) P - W-B ACC relay drive signal Engine switch on (ACC) 11 to 14 V E1-22 (ACCD) - 2D-62 (GND2) P - W-B ACC relay drive signal Engine switch off Below 1 V E1-3 (IG1D) - 2D-62 (GND2) G - W-B IG1 No. 3 relay drive signal Engine switch on (IG) 11 to 14 V E1-3 (IG1D) - 2D-62 (GND2) G - W-B IG1 No. 3 relay drive signal Engine switch on (ACC) Below 1 V E2-11 (IG2D) - 2D-62 (GND2) B - W-B Integration relay (IG2 relay) drive signal Engine switch on (IG) 11 to 14 V E2-11 (IG2D) - 2D-62 (GND2) B - W-B Integration relay (IG2 relay) drive signal Engine switch on (ACC) Below 1 V E1-19 (SLR+) - 2D-62 (GND2) G - W-B Steering lock power supply Steering lock motor operating Below 1 V E1-19 (SLR+) - 2D-62 (GND2) G - W-B Steering lock power supply Steering lock motor not operating 11 to 14 V E1-8 (STR) - 2D-62 (GND2) L - W-B Park/neutral position switch signal Engine switch on (IG), shift lever not in P or N --> P or N Below 2 V --> Pulse generation*1 E1-18 (SLP) - 2D-62 (GND2) SB - W-B Steering lock actuator position signal Steering lock locked 11 to 14 V E1-18 (SLP) - 2D-62 (GND2) SB - W-B Steering lock actuator position signal Steering lock released Below 1 V E3-9 (SPD) - 2D-62 (GND2) V - W-B Speed signal from combination meter Engine switch on (IG), driving wheel rotating slowly Pulse generation (see waveform 1 (Scheme 117) ) E3-8 (TACH) - 2D-62 (GND2) W - W-B Tachometer signal Engine running Pulse generation (see waveform 2 (Scheme 118) ) E4-2 (P) - 2D-62 (GND2) L - W-B Shift lock signal Shift lever in P Pulse generation (see waveform 3 (Scheme 119) ) E4-2 (P) - 2D-62 (GND2) L - W-B Shift lock signal Shift lever not in P Below 1 V E4-4 (STSW) - 2D-62 (GND2) R - W-B Starter activation request signal Brake pedal depressed with shift lever in P, engine switch pushed once 11 to 14 V E1-15 (INDS) - 2D-62 (GND2) W - W-B Vehicle condition signal Brake pedal released with shift lever in P or N, engine switch off, on (ACC), or on (IG) 9 to 14 V E1-14 (INDW) - 2D-62 (GND2) W - W-B Vehicle condition signal Brake pedal released with shift lever in P or N, engine switch off, on (ACC), or on (IG) 9 to 14 V E1-25 (SWIL) - 2D-62 (GND2) R - W-B Illumination signal Light control switch tail or head 11 to 14 V 2B-22 (STP) - 2D-62 (GND2) R - W-B Stop light switch signal Brake pedal depressed 11 to 14 V 2B-22 (STP) - 2D-62 (GND2) R - W-B Stop light switch signal Brake pedal released Below 1 V HINT: *1: Remove the ST CUT relay before measuring the voltage. 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 REFERENCE Terminal No. (Symbol) Tool Setting Condition E3-9 (SPD) - 2D-62 (GND2) 5 V/DIV., 100 msec./DIV. Driving at approx. 20 km/h (12 mph) HINT: As the vehicle speed increases, the wavelength shortens. Waveform 2 REFERENCE Terminal No. (Symbol) Tool Setting Condition E3-8 (TACH) - 2D-62 (GND2) 10 V/DIV., 10 msec./DIV. Engine switch on (IG) or engine started Waveform 3 REFERENCE Terminal No. (Symbol) Tool Setting Condition E4-2 (P) - 2D-62 (GND2) 2 V/DIV., 20 msec./DIV. Shift lever in P
2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Disconnect the E29 certification ECU (smart key ECU assembly) connector. Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E29-1 (+B) - Body ground B - Body ground +B power supply Always 11 to 14 V E29-10 (LIN) - Body ground GR - Body ground LIN line Always 10 kohms or higher E29-17 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the E29 certification ECU (smart key ECU assembly) connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E29-18 (IG) - Body ground B - Body ground Ignition power supply Engine switch on (IG) 11 to 14 V E29-18 (IG) - Body ground B - Body ground Ignition power supply Engine switch off Below 1 V If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.
3. CHECK ECM Disconnect the A38 and C53 ECM connectors. Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A38-1 (BATT) - C53-81 (E1) L - W-B Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V A38-3 (+B) - C53-81 (E1) B - W-B Power source of ECM Engine switch on (IG) 11 to 14 V A38-28 (IGSW) - C53-81 (E1) B - W-B Engine switch signal Always 11 to 14 V C53-81 (E1) - Body ground W-B - Body ground Ground Always Below 1 ohms C53-43 (E01) - Body ground W-B - Body ground Ground Always Below 1 ohms C53-42 (E02) - Body ground BR - Body ground Ground Always Below 1 ohms C53-46 (E03) - Body ground W-B - Body ground Ground Always Below 1 ohms C53-23 (E04) - Body ground W-B - Body ground Ground Always Below 1 ohms C53-21 (E05) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the ECM connectors. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A38-46 (STA) - C53-81 (E1) R-B - W-B ST relay operation signal Cranking 5.5 V or more A38-14 (STSW) - C53-81 (E1) R - W-B Starter activation request signal Brake pedal depressed, engine switch on (IG) Output voltage at terminal AM1 or AM2 is -2 V or more A38-41 (ACCR) - C53-81 (E1) L-Y - W-B ACC relay cut signal (output) Engine switch on (IG) --> Cranking 11 to 14 V --> Below 1 V A38-15 (TACH) - C53-81 (E1) W-G - W-B Engine speed signal (output) Idling Pulse generation (see waveform 1 (Scheme 122) ) C53-16 (STAR) - C53-81 (E1) L - W-B ST relay drive signal Cranking 11 to 14 V If the result is not as specified, the ECM may have a malfunction. Using an oscilloscope, check the signal waveform of the ECM. Waveform 1 REFERENCE Terminal No. (Symbol) Tool Setting Condition A38-15 (TACH) - C53-81 (E1) 5 V/DIV., 10 ms./DIV. Engine idling HINT: As the engine speed increases, the wavelength shortens.
4. CHECK STEERING LOCK ECU Disconnect the E26 steering lock ECU connector. Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E26-7 (B) - Body ground R - Body ground +B power supply Always 11 to 14 V E26-6 (IG2) - Body ground B - Body ground Ignition power supply Engine switch on (IG) 11 to 14 V E26-6 (IG2) - Body ground B - Body ground Ignition power supply Engine switch off Below 1 V E26-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms E26-2 (SGND) - Body ground BR - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the E26 steering lock ECU connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E26-4 (SLP1) - E26-1 (GND) SB - W-B Steering lock actuator position signal Steering locked 11 to 14 V E26-4 (SLP1) - E26-1 (GND) SB - W-B Steering lock actuator position signal Steering released Below 1 V If the result is not as specified, the ECU may have a malfunction.

DTC CHECK / CLEAR

1. CHECK DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Main Body / Trouble codes. Read the DTCs.
2. CLEAR DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Main Body / Trouble codes. Clear the DTCs.

DATA LIST / ACTIVE TEST

1. READ 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / (desired system) / Data List. According to the display on the Techstream, read the Data List. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note ACC SW Engine switch on (ACC)/ON or OFF ON: Engine switch on (ACC) OFF: Engine switch off - IG SW Engine switch on (IG)/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - Stop Light SW Stop light switch/ON or OFF ON: Brake pedal depressed OFF: Brake pedal released - Start Switch1 Start switch 1/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - Start Switch2 Start switch 2/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - Steering Unlock Switch Steering lock condition/ON or OFF ON: Steering unlocked OFF: Steering locked - Neutral SW/ Clutch SW Park/neutral position switch/ON or OFF ON: Shift lever in P or N OFF: Shift lever not in P or N - Shift P Signal Shift P position signal/ON or OFF ON: Shift lever in P OFF: Shift lever not in P - Vehicle Speed Signal Vehicle speed signal/Stop or Run Stop: Vehicle stopped Run: Vehicle running - Engine Condition Engine condition/Stop or Run Stop: Engine stopped Run: Engine running - IG1 Relay Monitor(Outside) IG1 No. 3 relay outer relay monitor/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - IG2 Relay Monitor(Outside) Integration relay (IG2 relay) outer relay monitor/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - IG1 Relay Monitor(Inside) IG1 No. 3 relay inner relay monitor/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - IG2 Relay Monitor(Inside) Integration relay (IG2 relay) inner relay monitor/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - ACC Relay Monitor ACC relay monitor/ON or OFF ON: Engine switch on (ACC) OFF: Engine switch off - Latch Circuit Latch circuit/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off, on (ACC) - Starter Request Signal Starter request signal/ON or OFF ON: ST relay on OFF: ST relay off - Power Supply Condition Power supply condition/ALL OFF, ACC ON, IG1 ON, IG2 ON or ST ON ALL OFF: All relays off ACC ON: ACC relay on IG1 ON: Integration relay (IG1 relay) on IG2 ON: Integration relay (IG2 relay) on ST ON: STSW signal on - ACC Relay Cut Signal ACC relay cut signal/ON or OFF ON: Engine cranking OFF: Engine not cranking - Starter Relay Monitor ST relay monitor/ON or OFF ON: Engine cranking OFF: Engine not cranking - The Number of DTC Number of diagnostic trouble codes/Min: 0, Max: 255 - - SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Ignition Switch Engine switch/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - Unmatched Vehicle-ID Key ID/Yes or No Yes: Key ID matches No: Key ID differs - No Response No Communication condition between vehicle and electrical key transmitter (response) / Yes or No Yes: Key ID code not matched to vehicle No: Key ID code matched to vehicle - Unmatch Code or Form Code format/Yes or No Yes: Code format matches No: Code format differs - Key Low Battery Key battery conditions/Yes or No Yes: Key battery voltage low No: Key battery voltage normal - #Codes Number of diagnostic trouble codes/Min: 0, Max: 255 - - ID Code Difference(Resp) ID code/Yes or No Yes: ID code matches No: ID code differs - C Code Difference Challenge code/Yes or No Yes: Challenge code matches No: Challenge code differs - Engine Start Condition Engine start condition by certification ECU (smart key ECU assembly)/OK or NG OK: Engine start permitted NG: Engine start prohibited - S Code Check S code certification result/NG or OK OK: S code certification result normal NG: S code certification result abnormal - L Code Check L code certification result/NG or OK OK: L code certification result normal NG: L code certification result abnormal - Ignition Available Area Key area where engine start is possible/All or Front All: All areas Front: Front only
2. PERFORM ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relays, 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / (desired system) / Active Test. According to the display on the Techstream, perform the Active Test. MAIN BODY Tester Display Test Part Control Range Diagnostic Note Indicator for Lighting Indicator illumination ON/OFF - Indicator Condition Indicator light illumination pattern Green/Red/No Sig - P Supply for Steering Lock Steering lock ECU power supply ON/OFF - SMART KEY Tester Display Test Part Control Range Diagnostic Note Fr-Seat Inside Transmitter Indoor key antenna (for front) ON/OFF - Rr-Seat Inside Transmitter Indoor key antenna (for rear1) ON/OFF - Inside Trunk/Backdoor Transmitter Indoor key antenna (for rear2) ON/OFF - Outside Trunk/Backdoor Transmitter Electrical key antenna ON/OFF

DIAGNOSTIC TROUBLE CODE CHART

HINT

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

SMART KEY SYSTEM (FOR START FUNCTION)

See also:
• DIAGNOSIS SYSTEM
• DIAGNOSTIC TROUBLE CODE CHART
• DIAGNOSTIC TROUBLE CODE CHART
• Power Source Mode does not Change
• INSPECTION
• Room Oscillator does not Recognize Key
• INSPECTION
• INSPECTION
• TERMINALS OF ECU
• TERMINALS OF ECU
• HOW TO PROCEED WITH TROUBLESHOOTING
• HOW TO PROCEED WITH TROUBLESHOOTING
• DTC CHECK / CLEAR
• TERMINALS OF ECU
• DATA LIST / ACTIVE TEST