Smart Access System (keyless Start) (diagnostics - Introduction) Lexus IS F I

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 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 electrical key is held near the engine switch to start the engine when the electrical key battery is depleted, the following warnings will sound: Driver's 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 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.

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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 electrical key. This system consists primarily of the power source control ECU, engine switch, ID code box (immobiliser code ECU), steering lock ECU, electrical key, ACC relay, IG1 relay, IG2 relay and certification ECU (smart key ECU assembly). The power source control ECU controls the system. This function operates in cooperation with the smart access system with push-button start.
2. FUNCTION OF COMPONENT Component Function Engine Switch Transponder Key Amplifier Transmits engine switch signal to power source control ECU. Informs driver of a 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 the 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 interior. Entry Door Control Receiver Receives ID code from electrical key and transmits it to the certification ECU (smart key ECU assembly). Power Source Control ECU Changes power source mode in 4 stages (off, on (ACC), on (IG), start) 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. Certification ECU (smart key ECU assembly) Certifies the ID code received from entry door control receiver and transmits certification results to the ID code box (Immobiliser Code ECU) and steering lock ECU. Stop Light Switch Outputs state of brake pedal to power source control ECU. ID Code Box (immobiliser code ECU) Receives steering unlock or engine immobiliser 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 power source control ECU, turns ON STARTER relay, and starts engine. Receives signal from ID code box (Immobiliser Code ECU) and performs engine ignition and injection.
3. SYSTEM FUNCTION The electric controls of the push-button start function are described below: Control Outline Engine switch control When driver operates engine switch with electrical key in driver's possession, certification ECU (smart key ECU assembly) starts indoor electrical key oscillator, which transmits request signal to electrical key. Upon receiving this signal, the electrical key transmits ID code signal to power source control ECU. ID code box (immobiliser code ECU) verifies check results received from the certification ECU (smart key ECU assembly) via LIN and sends them to power source control ECU. Based on these results, power source control ECU authorizes operation of engine switch. Diagnosis When power source control ECU detects malfunction, the power source control ECU diagnoses and memorizes the failed section.
4. CONSTRUCTION AND OPERATION Engine Switch The engine 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 engine can start in accordance with the illumination state of the indicator light. When the power source control ECU detects an abnormality in the push-button start system, it makes the amber indicator light flash. If the engine stopped in this state, it may 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 or N off OFF Turns ON (Green) on (ACC, IG) Turns ON (Amber) Turns ON (Green) Engine running OFF OFF Steering lock not unlocked Flashes (Green) for 15 sec. Flashes (Green) for 15 sec. System malfunction Flashes (Amber) for 15 sec. Flashes (Amber) for 15 sec. Power Source Control ECU The power Source Control ECU consists of the IG1 and IG2 relay actuation circuits and CPU. HINT: Before removing the battery, make sure to turn the engine switch off. The power source control ECU constantly stores the present power source mode in its memory. Therefore, if the power source control ECU is interrupted by disconnecting the battery, the power source control ECU restores the power source mode after the battery is reconnected. For this reason, if the battery is disconnected when the engine switch is other than off, the power will be restored to the vehicle at the same time the power is restored to the power source control ECU (by reconnecting the 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 or N When the engine switch is pushed once. off --> engine start Not depressed P Each time the engine switch is pushed. off --> on (ACC) --> on (IG) --> off Except P Each time the engine switch is pushed. off --> on (ACC) --> on (IG) --> on (ACC) - P When the engine switch is pushed in the on (IG) condition (engine running). on (IG) --> off - Except P When the engine switch is pushed in the on (IG) condition (engine running). on (IG) --> on (ACC) When the battery of the key is low, the push-button start function can be operated by holding the key against the engine switch. After approximately 1 hour has passed with the engine switch on (ACC) and the shift position in P, the power source control ECU will automatically cut the power supply (the power source mode changes to off). The illustration below shows the transition of power source modes. Transition of power source mode: HINT: While the vehicle is being driven normally, operation of the engine switch is disabled. However, if the engine must be stopped in an emergency while the vehicle is being driven, pressing the engine switch for 3 seconds or more stops the engine. Power source mode changes from start 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 engine switch with the brake pedal depressed. The power source control 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 entry door control receiver, so it actuates the transponder key amplifier built into the engine switch. The transponder key amplifier outputs an engine immobiliser 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 source control ECU. The buzzer in the combination meter sounds at the same time. After the buzzer sounds, if the engine switch is pressed within 5 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 source 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 engine switch flashes to warn the driver. At the same time, the ECU stores a 5-digit DTC (Diagnostic Trouble Code) in the 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. 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 the 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 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
4. CHECK MULTIPLEX COMMUNICATION SYSTEM (BEAN)* Use the Techstream to check if the Multiplex Communication System (MPX) is functioning normally. Refer to «DTC CHECK / CLEAR»(/lexus/is-f/i-2007-2014/remont/communication-devices/#multiplex-communication-diagnostics-introduction__dtc-check-clear) . Result Result Proceed to MPX DTC is not output A MPX DTC is output B B --> GO TO MULTIPLEX COMMUNICATION SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/lexus/is-f/i-2007-2014/remont/communication-devices/#multiplex-communication-diagnostics-introduction__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 «DTC CHECK / CLEAR»(/lexus/is-f/i-2007-2014/remont/communication-devices/#lin-communication-system-diagnostics-introduction__dtc-check-clear) . 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»(/lexus/is-f/i-2007-2014/remont/communication-devices/#lin-communication-system-diagnostics-introduction__diagnostic-trouble-code-chart) A: Go to next step
6. CHECK FOR DTC* Check for DTC and note any codes that are output. Refer to «DTC CHECK / CLEAR»(/lexus/is-f/i-2007-2014/remont/starter/#smart-access-system-keyless-start-diagnostics-introduction__dtc-check-clear) . Clear the DTC. Recheck for DTCs. Result Result Proceed to DTC does not reoccur A DTC reoccurs B B --> GO TO «DIAGNOSTIC TROUBLE CODE CHART»(/lexus/is-f/i-2007-2014/remont/starter/#smart-access-system-keyless-start-diagnostics-introduction__diagnostic-trouble-code-chart) A: Go to next step
7. INSPECT BASIC OPERATION Turn the engine switch on (START) and check that the engine starts normally. Make sure the brake pedal is depressed and the shift position is in P at this time. Check that the engine switch mode can be changed by pushing the engine switch. HINT: Without depressing the brake pedal, push the engine switch repeatedly. Engine switch mode should turn from off to on (ACC) to on (IG) and back to off. With the brake pedal depressed, push the engine switch repeatedly. Engine switch mode should turn to ENGINE START from any status. OK Engine can start normally. NEXT: Go to next step
8. PROBLEM SYMPTOMS TABLE Result Result Proceed to Fault is not listed in the problem symptoms table A Fault is listed in the problem symptoms table B B --> Go to step 10 A: Go to next step
9. OVERALL ANALYSIS AND TROUBLESHOOTING* Terminals of ECU. Refer to «TERMINALS OF ECU»(/lexus/is-f/i-2007-2014/remont/starter/#smart-access-system-keyless-start-diagnostics-introduction) Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST»(/lexus/is-f/i-2007-2014/remont/starter/#smart-access-system-keyless-start-diagnostics-introduction__data-list-active-test) NEXT: Go to next step
10. REPAIR OR REPLACE NEXT: Go to next step
11. CONFIRMATION TEST NEXT --> END

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 ACCESS SYSTEM WITH PUSH-BUTTON START

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1. CHECK POWER SOURCE CONTROL ECU Disconnect the J55 ECU connector. Measure the voltage and resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition J55-6 (GND2) - Body ground W-B - Body ground Ground Always Below 1 ohms J55-7 (MPX1) - Body ground GR - Body ground MPX line Always 10 kohms or higher J55-12 (AM2) - Body ground BE - Body ground +B power supply Always 11 to 14 V J55-14 (SSW1) - Body ground B - Body ground Engine switch signal Engine switch pushed Below 1 ohms J55-14 (SSW1) - Body ground B - Body ground Engine switch signal Engine switch not pushed 10 kohms or higher J55-24 (MPX2) - Body ground GR - Body ground MPX line Always 10 kohms or higher J55-30 (LIN1) - Body ground V - Body ground LIN line Always 10 kohms or higher J55-33 (AM1) - Body ground BE - Body ground +B power supply Always 11 to 14 V J55-37 (SSW2) - Body ground SB - Body ground Engine switch signal Engine switch pushed Below 1 ohms J55-37 (SSW2) - Body ground SB - Body ground Engine switch signal Engine switch not pushed 10 kohms or higher If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition J55-1 (STP) - J55-6 (GND2) R - W-B Stop light signal Brake pedal depressed 8 to 14 V J55-1 (STP) - J55-6 (GND2) R - W-B Stop light signal Brake pedal released Below 1 V J55-2 (TACH) - J55-6 (GND2) W - W-B Tachometer signal Engine running Pulse generation (See waveform 2) J55-4 (INDS) - J55-6 (GND2) L - W-B Vehicle condition signal Brake pedal depressed, shift lever in P. 8 to 14 V J55-5 (P) - J55-6 (GND2) BR - W-B Shift lock signal Shift lever in P 8 to 14 V J55-5 (P) - J55-6 (GND2) BR - W-B Shift lock signal Shift lever not in P Below 1 V J55-11 (ACCD) - J55-6 (GND2) LG - W-B ACC signal Engine switch on (ACC) 8 to 14 V J55-11 (ACCD) - J55-6 (GND2) LG - W-B ACC signal Engine switch off Below 1 V J55-13 (INDW) - J55-6 (GND2) BR - W-B Warning signal Brake pedal depressed, shift lever in P position, engine switch on (ACC, IG) 8 to 14 V J55-15 (STR2) - J55-6 (GND2) V - W-B Starter signal Brake pedal depressed, shift lever in P or N , engine switch on (ST) 8 to 14 V*2 J55-17 (STR1) - J55-6 (GND2) SB - W-B Park/neutral position switch Shift lever in P or N Below 1 V J55-19 (SPD) - J55-6 (GND2) P - W-B Vehicle speed signal Engine switch on (IG), rotate rear wheel slowly Pulse generation (See waveform 1) J55-26 (SLP) - J55-6 (GND2) R - W-B Steering lock actuator position signal Steering lock is released Pulse generation (See waveform 3) J55-26 (SLP) - J55-6 (GND2) R - W-B Steering lock actuator position signal Steering lock is locked Pulse generation (See waveform 3) J55-28 (SKSW) - J55-6 (GND2) B - W-B Key in vehicle signal Engine switch on (ACC, IG) Below 1 V J55-31 (CTSW) - J55-6 (GND2) LG - W-B Starter assist signal Brake pedal depressed, shift lever in P, engine switch is pushed once --> on (IG) 0.1 to 0.8 V*1 --> 11 to 14 V J55-32 (SLR+) - J55-6 (GND2) W - W-B Steering lock motor signal Steering lock motor operating Below 1 V J55-32 (SLR+) - J55-6 (GND2) W - W-B Steering lock motor signal Steering lock motor does not operate 11 to 14 V J55-34 (IG1D) - J55-6 (GND2) P - W-B IG1 signal Engine switch on (IG) 8 to 14 V J55-34 (IG1D) - J55-6 (GND2) P - W-B IG1 signal Engine switch on (ACC) Below 1 V J55-35 (IG2D) - J55-6 (GND2) LG - W-B IG2 signal Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - J55-6 (GND2) LG - W-B IG2 signal Engine switch on (ACC) Below 1 V J55-36 (SWIL) - J55-6 (GND2) Y - W-B Illumination signal Light control switch TAIL or HEAD 8 to 14 V J55-39 (STSW) - J55-6 (GND2) L - W-B Starter activation request signal Brake pedal depressed, engine switch hold on (ST) 8 to 14 V*2 *1: Voltage is output only when the engine is cranking. *2: Voltage is output for 0.3 seconds when engine is cranking start. Disconnect the A5 connector from the ECM 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 WAVEFORM 1 (REFERENCE) Tester Connection J55-19 - Body ground Tool Setting 5 V/DIV., 10 ms./DIV. Vehicle Condition Driving at approx. 20 km/h (12 mph) HINT: As the vehicle speed increases, the wavelength shortens. Waveform 2 WAVEFORM 2 (REFERENCE) Tester Connection J55-2 - Body ground Tool Setting 5 V/DIV., 10 ms./DIV. Vehicle Condition Engine idling HINT: As the engine revolution speed increases, the wavelength shortens. Waveform 3 WAVEFORM 3 (REFERENCE) Tester Connection J55-26 - Body ground Tool Setting 2 V/DIV., 100 ms./DIV. Vehicle Condition Steering lock / unlock
2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Disconnect the P33 ECU connector. Measure the voltage and resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition P33-1 (+B1) - Body ground L - Body ground +B power supply Always 11 to 14 V P33-10 (LIN) - Body ground V - Body ground LIN line Always 10 kohms or higher P33-17 (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.
3. CHECK ECM Disconnect the A5, E3, E4, E5 and E6 ECM connectors. Measure the voltage and resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition E4-1 (E02) - Body ground W-B - Body ground Ground Always Below 1 ohms E4-2 (E01) - Body ground W-B - Body ground Ground Always Below 1 ohms A5-1 (EC) - Body ground W-B - Body ground Ground Always Below 1 ohms A6-1 (+B2) - Body ground B-R - Body ground Power source of ECM Engine switch on (IG) 11 to 14 V A6-2 (+B) - Body ground B-R - Body ground Power source of ECM Engine switch on (IG) 11 to 14 V A5-8 (IGSW) - Body ground B-W - Body ground Engine switch signal Engine switch on (IG) 11 to 14 V A4-5 (ME01) - Body ground W-B - Body ground Ground Always Below 1 ohms A6-4 (E03) - Body ground W-B - Body ground Ground Always Below 1 ohms E6-1 (E1) - Body ground W-B- Body ground Ground Always Below 1 ohms A5-1 (E05) - Body ground W-B - Body ground Ground Always Below 1 ohms E6-4 (E04) - 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 A5, E3, E4, E5 and E6 ECM connectors. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition A6-19 (ACCR) - E6-1 (E1) W-L - W-B ACC relay cut signal (output) Engine switch on (IG) 11 to 14 V A6-20 (STA) - E6-1 (E1) L-R - W-B Starter relay operation signal Cranking 11 to 14 V A5-25 (KSW) - E6-1 (E1) L-R - W-B Engine switch signal (input) Engine switch off 4 to 6 V A5-25 (KSW) - E6-1 (E1) L-R - W-B Engine switch signal (input) When engine switch is pushed once 11 to 14 V A5-25 (KSW) - E6-1 (E1) L-R - W-B Engine switch signal (input) Engine switch on (ACC) Below 1.5 V A5-13 (STP) - E6-1 (E1) R-B - W-B Stop light switch signal (input) Brake pedal depressed 7.5 to 14 V A5-13 (STP) - E6-1 (E1) R-B - W-B Stop light switch signal (input) Brake pedal released Below 1.5 V A5-15 (TACH) - E6-1 (E1) R-W - W-B Engine revolution signal (output) Idling Pulse generation (see waveform 1) A5-2 (STAR) - E6-1 (E1) L-Y - W-B PNP switch signal (input) Engine switch on (IG), shift position P or N 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) Tester Connection A5-15 (TACH) - E6-1 (E1) Tool Setting 5 V/DIV., 10 ms./DIV. Vehicle Condition Engine idling HINT: As the engine revolution speed increases, the wavelength shortens.
4. CHECK STEERING LOCK ECU Disconnect the J29 ECU connector. Measure the voltage and resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition J29-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 ohms J29-2 (SGND) - Body ground W-B - Body ground Ground Always Below 1 ohms J29-6 (IG2) - Body ground LG - Body ground Ignition power supply Engine switch on (IG) 11 to 14 V J29-6 (IG2) - Body ground LG - Body ground Ignition power supply Engine switch off Below 1 V J29-7 (B) - Body ground G - Body ground +B power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the J29 ECU connector. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition J29-4 (SLP1) - J29-1 (GND) R - W-B Steering lock actuator position signal Steering is locked 11 to 14 V J29-4 (SLP1) - J29-1 (GND) R - W-B Steering lock actuator position signal Steering is released Below 1 V If the result is not as specified, the ECU may have a malfunction.

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 DLC3. Refer to «GENERAL INFORMATION»(/lexus/is-f/i-2007-2014/remont/hoistjack/#introduction) .
3. INSPECT BATTERY VOLTAGE Standard Voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding.

DTC CHECK / CLEAR

1. CHECK DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). 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 engine switch on (IG). Erase 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. 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). Read the Data List according to the display on the Techstream. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Shift P Signal Shift P position signal / ON or OFF ON: Shift position is P OFF: Shift position is not P - Steering Unlock Switch Steering lock condition / ON or OFF ON: Steering is unlocked OFF: Steering is locked - 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: Engine switch is pushed OFF: Engine switch is not pushed - Start Switch2 Start switch 2 / ON or OFF ON: Engine switch is pushed OFF: Engine switch is not pushed - Neutral SW Neutral start switch / ON or OFF ON: Shift position is P or N OFF: Shift position is neither P nor N - Latch Circuit Latch circuit / ON or OFF ON: Engine switch on (IG) or engine running OFF: Engine switch off, on (ACC) - IG1 Relay Monitor (Outside) IG1 outer relay monitor / ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - IG1 Relay Monitor (Inside) IG1 inner relay monitor / ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - IG2 Relay Monitor (Outside) IG2 outer relay monitor / ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - IG2 Relay Monitor (Inside) IG2 inner relay monitor / ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - Starter Relay Monitor STARTER relay monitor / ON or OFF ON: Engine is cranking OFF: Engine is not cranking Engine is cranking with engine switch on (IG) and shift lever in P or N Starter Request Signal Starter request signal monitor / ON or OFF ON: ST relay is ON OFF: ST relay is OFF Engine switch pressed and held with shift lever in P or N ACC Relay Monitor ACC relay monitor / ON or OFF ON: Engine switch on (ACC) OFF: Engine switch off - ACC Relay Cut Signal ACC relay cut signal / ON or OFF ON: Engine is cranking OFF: Engine is not cranking - Engine Condition Engine condition / Stop or Run Stop: Engine is stopped Run: Engine is running - Vehicle Speed Signal Vehicle speed signal / Stop or Run STOP: Vehicle is stopped RUN: Vehicle is running - Power Supply Condition Power supply condition / All, ACC ON, IG1 IG2, ST ON All: All relays are OFF ACC ON: ACC relay is ON IG1: IG1 relay is ON IG2: IG2 relay is ON ST ON: ST request signal is ON
2. PERFORM ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relay, VSVs, actuators and other item 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). Perform the Active Test according to the display on the Techstream. BODY Tester Display Test Part Control Range Diagnostic Note Indicator for Lighting Illumination of engine switch ON / OFF - Indicator Condition Engine switch indicator Green / Amber / No Sig - P Supply for Steering Lock Power supply for steering lock ECU ON / OFF

DIAGNOSTIC TROUBLE CODE CHART

SMART ACCESS SYSTEM WITH PUSH-BUTTON START

See also:
• DTC CHECK / CLEAR
• DIAGNOSTIC TROUBLE CODE CHART
• DTC CHECK / CLEAR
• DIAGNOSTIC TROUBLE CODE CHART
• Power Source Mode does not Change
• GENERAL INFORMATION
• DTC CHECK / CLEAR
• DIAGNOSTIC TROUBLE CODE CHART
• TERMINALS OF ECU
• DATA LIST / ACTIVE TEST