Smart Access System (Keyless Start) (Diagnostics - Introduction): Diagnosis Lexus ES XV60

HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]

HINT

1. Use these procedures to troubleshoot the smart access system with push-button start (for Start Function).
2. *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. CUSTOMER PROBLEM ANALYSIS CHECK HINT: In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred. Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases. The following 5 items are important points for problem analysis: What Vehicle model, system name When Date, time, occurrence frequency, whether the problem occurred recently or has been occurring for a long time Where Whether the problem occurs at a specific location Under what conditions? Whether the doors were locked or unlocked, whether the engine switch was on, whether the engine has started How did it happen? Problem symptoms* *: Be sure to ask the customer in detail about the following points concerning the vehicle operating conditions, environment and problem, and then check for DTCs. If the entry lock/unlock function does not operate for all doors. If the entry lock function does not operate. If the entry unlock function does not operate. If both the entry lock and unlock functions do not operate. If the wireless lock and unlock functions do not operate. If there is no power even when the engine switch is pressed (does not turn on (ACC)). If the engine does not start with the push-button start function. If the wireless answer-back buzzer and outside warning buzzers do not sound. If the customer attempted to start the engine by touching the electrical key transmitter sub-assembly the engine switch and pressing the engine switch. If the interior warning buzzers do not sound. If the steering does not unlock. Any other details concerning the problem. If it is suspected that wave interference is likely, be sure to ask the customer in detail about the following points concerning the vehicle operating conditions, environment and problem. Specific locations where the system does not operate (such as near TV towers, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc.). Specific times when the system does not operate: Whether or not symptoms occurred immediately after purchase or only recently. Whether or not the symptoms occurred even when the electrical key transmitter sub-assembly was near the vehicle (electrical key antenna). If the system does not operate only when near specific vehicles (there may be wave interference from the wireless systems of other vehicles). If the system operates intermittently. If the electrical key transmitter sub-assembly is bundled together with other items. If the electrical key transmitter sub-assembly is carried together with other electronic devices, such as cell phones, personal computers, portable music players, other electrical key transmitter sub-assemblies, etc. (keep the electrical key transmitter sub-assembly at least 0.1 m (0.33 ft.) away from such items). Where the electrical key transmitter sub-assembly is being kept when not in use: Whether or not the electrical key transmitter sub-assembly is being placed within 1 m (3.28 ft.) of items such as TVs, DVD recorders, induction cookers, rice cookers, dishwashers, modems, cell phones, personal computers, microwave ovens, desk or floor lamps, cordless telephones, etc. If there are electronic devices that transmit radio waves placed in the vehicle. When the transmitter battery was last replaced. The transmitter battery can be checked using the "Key Low Battery" item in the Data List. Refer to «DATA LIST / ACTIVE TEST [06/2012 - ]»(ref-598457-S14148979922014021400000) . If the customer installed any optional components (theft deterrent devices, wireless fog lights, etc.) to the vehicle. NEXT: Go to next step
3. INSPECT BASIC OPERATION Inspect battery voltage. Standard Voltage 11 to 14 V NOTE: If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step. Check for blown fuses, open or shorted wire harnesses, improperly connected connectors and other problems in areas that can be visually inspected. NEXT: Go to next step
4. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* Using the Techstream, check for CAN communication system DTCs. Refer to «DIAGNOSIS SYSTEM [06/2012 - ]»(ref-598642-S28836115522014021400000) . Result Result Proceed to CAN DTCs are not output A CAN DTCs are output B B --> GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598635-S10414945732014021400000) A: Go to next step
5. CHECK FOR DTC* Check for DTCs and note any codes that are output. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598458-S28920021412014021400000) . Result Result Proceed to DTCs are not output A Immobilizer system DTCs are output B Smart access system with push-button start (for Entry Function) DTCs are output C Smart access system with push-button start (for Start Function) DTCs are output D B --> GO TO IMMOBILIZER SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART [06/2012 - ]»(ref-598473-S31267757952014021400000) C --> GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function). Refer to «DIAGNOSTIC TROUBLE CODE CHART [06/2012 - ]»(ref-598457-S21356012052014021400000) D --> GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART [06/2012 - ]»(ref-598458-S13991956172014021400000) A: Go to next step
6. PROBLEM SYMPTOMS TABLE Refer to Problem Symptoms Table. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598458-S04622080682014021400000) . Result Result Proceed to Fault is not listed in problem symptoms table A Fault is listed in problem symptoms table B B --> Go to step 8 A: Go to next step
7. OVERALL ANALYSIS AND TROUBLESHOOTING* Operation Check. Refer to «OPERATION CHECK [06/2012 - ]»(ref-598458-S42780736082014021400000) Terminals of ECU. Refer to «TERMINALS OF ECU [06/2012 - ]»(ref-598458-S30939597842014021400000) Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST [06/2012 - ]»(ref-598458-S41929334422014021400000) NEXT: Go to next step
8. REPAIR OR REPLACE NEXT: Go to next step
9. CHECK FOR DTC* Clear the DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598458-S28920021412014021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598458-S28920021412014021400000) . Result Result Proceed to DTCs are not output A DTCs are output B B --> GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART [06/2012 - ]»(ref-598458-S13991956172014021400000) A --> END

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1. OPERATION DESCRIPTION Push-button start function: When the electrical key transmitter sub-assembly is in a detection area inside the vehicle and the brake pedal is depressed, the engine is started by pressing the engine switch. When the electrical key transmitter sub-assembly is in a detection area inside the vehicle and the brake pedal is not depressed, the power source mode is changed by pressing the engine switch. The power source mode changes in the following order every time the engine switch is pressed: off --> on (ACC) --> on (IG) --> off. After getting into the vehicle while carrying the electrical key transmitter sub-assembly when the engine switch is off, if the engine switch is pressed while not depressing the brake pedal, the power source mode changes to on (ACC). After getting into the vehicle while carrying the electrical key transmitter sub-assembly when the engine switch is off, if the engine switch is pressed 2 times without depressing the brake pedal, the power source mode changes to on (IG). After getting into the vehicle while carrying the electrical key transmitter sub-assembly when the engine switch is off, if the brake pedal is depressed while the shift lever is in P or N, the smart warning light is displayed. The engine starts if the engine switch is pressed when the smart warning light is displayed. TEXT IN ILLUSTRATION *a Smart Warning Light Display Changing the power source mode when the electrical key transmitter sub-assembly does not operate correctly due to wave interference or transmitter battery depletion: Unlock the door using the built-in mechanical key and get into the vehicle while carrying the electrical key transmitter sub-assembly. While depressing the brake pedal and facing the logo side of the electrical key transmitter sub-assembly towards the engine switch, hold the electrical key transmitter sub-assembly near the engine switch. A buzzer in the combination meter assembly will sound and the power source mode changes to on (IG). Pressing the engine switch without depressing the brake pedal turns the power source mode from off to on (ACC). Starting the engine when the electrical key transmitter sub-assembly does not operate correctly due to wave interference or transmitter battery depletion: Unlock the door using the built-in mechanical key and get into the vehicle while carrying the electrical key transmitter sub-assembly. While depressing the brake pedal with the shift lever in P or N* and facing the logo side of the electrical key transmitter sub-assembly towards the engine switch, hold the electrical key transmitter sub-assembly near the engine switch. HINT: *: This is only applicable when the steering is unlocked. A buzzer in the combination meter assembly will sound the power source mode changes to on (IG) and the smart warning light is displayed. Press the engine switch with the brake pedal depressed to start the engine.
2. CHECK PUSH-BUTTON START FUNCTION Check the push-button start function: Get into the vehicle while carrying the electrical key transmitter sub-assembly with the engine switch off. With the shift lever in P, check that the smart warning light is displayed when the brake pedal is depressed. Then check that the engine starts when the engine switch is pressed after the smart warning light is displayed. While the brake pedal is released and the electrical key transmitter sub-assembly is being carried, check that the power source mode changes in the following order when the engine switch is pressed: off --> on (ACC) --> on (IG) --> off. HINT: When the engine switch is pressed with the engine switch on (IG) and the shift lever not in P, the power source mode does not change to off, but changes to on (ACC). With the shift lever in P, check that the steering lock operates when a door is opened. HINT: When the engine switch is pressed after the vehicle is stopped, the engine stops and all the power turns off. However, if the shift lever is not in P when the engine switch is pressed with the vehicle stopped, the power source mode does not change to off, but changes to on (ACC). Check the push-button start function operation range for the front side. Place the electrical key transmitter sub-assembly at either inspection point so that it is facing the direction shown in the illustration, and then check that the engine can be started. TEXT IN ILLUSTRATION *a Inspection Point NOTE: Even if the electrical key transmitter sub-assembly is in a vehicle interior key detection area, the electrical key transmitter sub-assembly may not be properly detected if the electrical key transmitter sub-assembly is on the instrument panel, in the glove box or on the floor. Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the shift lever. HINT: Perform this inspection for both inspection points. Check the push-button start function operation range for the rear side. Place the electrical key transmitter sub-assembly at either inspection point so that it is facing the direction shown in the illustration, and then check that the engine can be started. TEXT IN ILLUSTRATION *a Inspection Point NOTE: Even if the electrical key transmitter sub-assembly is in a vehicle interior key detection area, the electrical key transmitter sub-assembly may not be properly detected if the electrical key transmitter sub-assembly is on the instrument panel, in the glove box or on the floor. Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the center of the rear seat. HINT: Perform this inspection for both inspection points.
3. CHECK TRANSMITTER BATTERY SAVING FUNCTION Check the transmitter battery saving function: Press the unlock switch of the electrical key transmitter sub-assembly twice while pressing the lock button and check that the electrical key transmitter sub-assembly LED blinks 4 times and enters transmitter battery saving mode. Check that the smart access system with push-button start (for Start Function) does not operate while in transmitter battery saving mode. HINT: To cancel transmitter battery saving mode, press a button of the electrical key transmitter sub-assembly.
4. CHECK POWER SOURCE MODE CHANGING FUNCTION Check the engine switch. Check that the power source mode changes according to the chart below. Shift Position Brake Pedal Power Source Mode when Engine Switch Pressed P Released Off --> on (ACC) --> on (IG) --> off P Released Engine running --> off P Released On (ACC)*1 --> off P Depressed Off --> engine starts P Depressed On (ACC) --> engine starts P Depressed On (IG) --> engine starts P Depressed Engine running --> off P Depressed On (ACC)*1 --> off N Released Off --> on (ACC) --> on (IG) (after power source mode changes to on (IG), power source mode changes between on (IG) and on (ACC) every time engine switch is pressed) N Released Engine running --> on (ACC) N Depressed Off --> engine starts*2 N Depressed On (ACC) --> engine starts*2 N Depressed On (IG) --> engine starts*2 N Depressed Engine running --> on (ACC) Not P or N Released Off --> on (ACC) --> on (IG) (after power source mode changes to on (IG), power source mode changes between on (IG) and on (ACC) every time engine switch is pressed) Not P or N Released Engine running --> on (ACC) Not P or N Depressed Off --> on (IG) Not P or N Depressed On (ACC) --> on (IG) Not P or N Depressed Engine running --> on (ACC) HINT: *1: This situation is only applicable when the power source mode has changed from on (IG) to on (ACC) (Excluding an emergency stop by pressing the engine switch 3 times quickly or pressing and holding the engine switch for 2 seconds or more.) *2: This situation is only applicable when the steering is unlocked.
5. CHECK POWER SOURCE MODE INDICATION Check the smart warning. TEXT IN ILLUSTRATION *a POWER ON Display *b Smart Warning Light Display MULTI-INFORMATION DISPLAY INSPECTION Power Source Mode Multi-information Display Off (Excluding conditions in which the engine can be started) Off On (ACC) (Excluding conditions in which the engine can be started) "POWER ON" displayed On (IG) (Excluding conditions in which the engine can be started) "POWER ON" displayed Conditions in which engine can be started*1 Smart Warning light displayed Engine started Off HINT: *1: Indicates the conditions in which the engine can be started by pressing the engine switch while either of the following conditions is met: Condition 1 All of the following conditions are met: The power source mode was turned from on (IG) to on (ACC). Key verification is OK*2 or immobilizer is unset (engine switch is on (ACC) or on (IG)). The shift lever is in N and the steering is unlocked. The stop light switch is on. Condition 2 All of the following conditions are met: The power source mode was not turned from on (IG) to on (ACC). Key verification is OK*2 or immobilizer is unset (engine switch is on (ACC) or on (IG)). The stop light switch is on. The shift lever is in P, or the shift lever is in N with the steering unlocked. *2: When the electrical key transmitter sub-assembly is in the cabin, the ID code sent as a result from communication between the electrical key transmitter sub-assembly and certification ECU (smart key ECU assembly) and the ID code calculated by the certification ECU (smart key ECU assembly) are compared. If the ID codes match each other, the vehicle recognizes that the electrical key transmitter sub-assembly is in the cabin.

PROBLEM SYMPTOMS TABLE [06/2012 - ]

HINT

1. Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
2. Inspect the fuses and relays related to the system before inspecting the suspected areas below.
3. If the problem occurs in certain locations or times of day, the possibility of wave interference is high.
4. If a malfunction occurred after optional components were installed at the dealer, check if there is wave interference from the components.

SMART ACCESS SYSTEM WITH PUSH-BUTTON START (FOR START FUNCTION)

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1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Disconnect the H56 and A36 certification ECU (smart key ECU assembly) connectors. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item A36-7 (STA) - Body ground Input V - Body ground When starting the engine, this monitors the voltage sent from terminal STAR to the starter relay to judge whether the engine is "being started". 20°C (68°F) 93.75 to 136.36 ohms - A36-5 (STAR) - Body ground Input/Output P - Body ground Outputs voltage to the starter relay Outputs voltage (12 V) to the starter relay when starting the engine. (Max. 30 sec. Turns off when an engine speed of 500 rpm or more continues for 500 ms or more.) HINT: When Hi is selected, a start request signal (STAR) will not be output even though a start request signal (STSW) is input. Shift lever in any position other than P or N --> Shift lever in P or N (at 20°C (68°F)) 10 kohms or higher --> 93.75 to 136.36 ohms - Receives neutral start switch (P, N position detection) signal Monitors whether the neutral start switch is on (P or N) or off (other than P or N). Applies voltage via a resistor (large) in the certification ECU (smart key ECU assembly). When the neutral start switch is on, due to the starter relay coil resistance (small) using some of the voltage, the voltage at terminal STAR will be low (2.7 V or less), and when the neutral start switch is off, the voltage will be high (9 V or more). Perform the following operations except while the engine is cranking: Shift lever in any position other than P or N --> Shift lever in P or N (at 20°C (68°F)) 30 kohms or higher --> 93.75 to 136.36 ohms Neutral SW/ Clutch SW A36-16 (NE) - Body ground Input G - Body ground Engine speed signal Always 10 kohms or higher Engine Condition A36-9 (IG2D) - Body ground Output R - Body ground IG2 signal 20°C (68°F) Approximately 310.14 ohms IG2 Relay Monitor(Outside) A36-18 (STP1) - Body ground Input V - Body ground Stop light switch signal Brake pedal depressed --> Brake pedal released 9 V or higher --> 1 V or less Stop Light Switch1 A36-2 (+B) - A36-11 (E) Input W - W-B Power source Always 11 to 14 V - H56-26 (SLP) - A36-11 (E) Input P - W-B Steering lock position signal Always 10 kohms or higher Steering Unlock Switch A36-11 (E) - Body ground - W-B - Body ground GND Always Below 1 ohms - H56-30 (SSW2) - Body ground Input V - Body ground SSW2 contact signal HINT: Backup for SSW1. Behaves the same way as SSW1. Engine switch pushed --> Engine switch not pushed Below 1 ohms --> 10 kohms or higher Start Switch2 H56-28 (SSW1) - Body ground Input LG - Body ground SSW1 contact signal Engine switch pushed --> Engine switch not pushed Below 1 ohms --> 10 kohms or higher Start Switch1 H56-6 (IG1D) - Body ground Output G - Body ground IG1 signal 20°C (68°F) 91.28 to 136.93 ohms IG1 Relay Monitor(Outside) H56-4 (ACCD) - Body ground Output W - Body ground ACC signal 20°C (68°F) 125.95 to 188.93 ohms ACC Relay Monitor A36-10 (CUTB) - A36-11 (E) Input L - W-B Stand-by power* Always 11 to 14 V - H56-27 (SPD) - Body ground Input V - Body ground Vehicle speed signal Always 30 kohms or higher Vehicle Speed Signal *: In order to prevent the vehicle battery from being depleted when the vehicle is shipped long distances, a fuse that cuts unnecessary electrical load while the vehicle is being shipped is set in the circuit. If the fuse is removed, the circuit becomes open. If the fuse that is between the vehicle battery and terminal CUTB is removed and the circuit is open, the certification ECU (smart key ECU assembly) changes to a certain control mode (example: the transmission of radio waves every 0.25 seconds that form the detection area stops). If the result is not as specified, there may be a malfunction on the wire harness side or the fuse is removed. Reconnect the H56 and A63 certification ECU (smart key ECU assembly) connectors. Measure the voltage and check for pulses according to the value(s) in the table below. Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item A36-7 (STA) - A36-11 (E) Input V - W-B When starting the engine, this monitors the voltage sent from terminal STAR to the starter relay to judge whether the engine is "being started". With the brake pedal depressed, the engine switch is pressed and held (starter on) --> After approx. 1 sec. has elapsed, the engine switch is released (starter off) 6 V or higher*1 --> 1.5 V or less - A36-5 (STAR) - A36-11 (E) Input/Output P - W-B Outputs voltage to the starter relay Outputs voltage (12 V) to the starter relay when starting the engine. (Max. 30 sec. Turns off when an engine speed of 500 rpm or more continues for 500 ms or more.) HINT: When Hi is selected, a start request signal (STAR) will not be output even though a start request signal (STSW) is input. With the brake pedal depressed, the engine switch is pressed and held --> After approx. 1 sec. has elapsed, the engine switch is released 6 V or higher*1 --> 1.5 V or less - Receives neutral start switch (P, N position detection) signal Monitors whether the neutral start switch is on (P or N) or off (other than P or N). Applies voltage via a resistor (large) in the certification ECU (smart key ECU assembly). When the neutral start switch is on, due to the starter relay coil resistance (small) using some of the voltage, the voltage at terminal STAR will be low (2.7 V or less), and when the neutral start switch is off, the voltage will be high (9 V or more). Perform the following operations except while the engine is cranking: Shift lever in any position other than P or N --> shift lever in P or N 9 V or higher --> 2.7 V or less Neutral SW/ Clutch SW A36-16 (NE) - A36-11 (E) Input G - W-B Engine speed signal Idling (engine warmed up) Pulse generation (See waveform 1) Engine Condition A36-9 (IG2D) - A36-11 (E) Output R - W-B IG2 signal Engine switch on (ACC) --> Engine switch on (IG) 1 V or less --> 9 V or higher IG2 Relay Monitor(Outside) A36-18 (STP1) - A36-11 (E) Input V - W-B Stop light switch signal Brake pedal released --> Brake pedal depressed 1 V or less --> 9 V or higher Stop Light Switch1 H56-26 (SLP) - A36-11 (E) Input P - W-B Steering lock position signal Steering locked --> Steering unlocked*2 11 to 14 V --> 1.2 V or less Steering Unlock Switch H56-29 (SLR+) - A36-11 (E) Output L - W-B Steering lock motor operation command signal (Steering lock motor operation permission signal sent from the certification ECU (smart key ECU assembly)) Steering lock motor stopped --> Steering lock motor operating --> Steering lock motor stopped*3 Pulse generation (See waveform 2) - H56-25 (P) - A36-11 (E) Input L - W-B P position signal Shift lever in P --> Shift lever not in P 9 V or higher --> 1.5 V or less Shift P Signal H56-30 (SSW2) - A36-11 (E) Input V - W-B SSW2 contact signal HINT: Backup for SSW1. Behaves the same way as SSW1. Engine switch not pushed --> Engine switch pushed 9 V or higher --> 1 V or less Start Switch2 H56-28 (SSW1) - A36-11 (E) Input LG - W-B SSW1 contact signal Engine switch not pushed --> Engine switch pushed 9 V or higher --> 1 V or less Start Switch1 H56-4 (ACCD) - A36-11 (E) Output W - W-B ACC signal Engine switch off --> Engine switch on (ACC) 1 V or less --> 8.5 V or higher ACC Relay Monitor H56-6 (IG1D) - A36-11 (E) Output G - W-B IG1 signal Engine switch on (ACC) --> Engine switch on (IG) 1 V or less --> 9 V or higher IG1 Relay Monitor(Outside) H56-27 (SPD) - A36-11 (E) Input V - W-B Vehicle speed signal Vehicle being driven at approx. 5 km/h (3 mph) Pulse generation (See waveform 3) Vehicle Speed Signal HINT: *1: While the engine is cranking, the battery voltage may drop to approximately 6 V. *2: When the engine switch is turned off with the shift lever in P and any of the doors are opened or closed, the steering will be locked. When the engine switch is turned on (ACC) or on (IG), the steering will be unlocked. *3: When all of the following conditions are met, open any of the doors to operate the steering lock motor. The shift lever is in P. The engine switch is off. While the electrical key transmitter sub-assembly is being carried, the engine switch is turned on (IG) and the steering is unlocked. Using an oscilloscope, check the waveform of the ECU. Waveform 1 Item Content Tester Connection A36-16 (NE) - A36-11 (E) Tool Setting 2 V/DIV., 2 ms./DIV. Condition Idling (engine warmed up) HINT: The wavelength becomes shorter as the engine speed increases. Waveform 2 Item Content Tester Connection H56-29 (SLR+) - A36-11 (E) Tool Setting 2 V/DIV., 200 ms./DIV. Condition Steering lock motor stopped --> Steering lock motor operating --> Steering lock motor stopped TEXT IN ILLUSTRATION *a Steering lock motor not operating *b Steering lock motor operating HINT: *1: When all of the following conditions are met, open any of the doors to operate the steering lock motor. The shift lever is in P. The engine switch is off. While the electrical key transmitter sub-assembly is being carried, the engine switch is turned on (IG) and the steering is unlocked. Waveform 3 Item Content Tester Connection H56-27 (SPD) - A36-11 (E) Tool Setting 5 V/DIV., 20 ms./DIV. Condition Engine switch on (IG), vehicle being driven at approx. 5 km/h (3 mph) HINT: The wavelength becomes shorter as the vehicle speed increases.

DIAGNOSIS SYSTEM [06/2012 - ]

1. DESCRIPTION Smart access system with push-button start (for Start Function) data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.
2. CHECK DLC3 Check the DLC3. Refer to «GENERAL INFORMATION [06/2012 - ]»(ref-598449-S41583545682014021400000) .
3. INSPECT BATTERY VOLTAGE Measure the battery voltage. Standard Voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery.

DTC CHECK / CLEAR [06/2012 - ]

HINT

If the Techstream is connected to the vehicle with the engine switch off, the information stored in smart access system with push-button start related ECUs cannot be read. However, smart access system with push-button start DTCs and Data List information can be confirmed even if the engine switch is off using the following method

1. When using the Techstream with the vehicle engine switch off, connect the Techstream to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
2. Connect the Techstream to the DLC3, select the vehicle type under manual mode, and then enter the following menus: Body Electrical / Smart Access / Trouble Codes.

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

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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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / (desired system) / 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 Shift P Signal Shift position P/ON or OFF ON: Shift lever in P OFF: Shift lever not in P Use this item to determine if the shift position switch is malfunctioning. The engine cannot be started when this item is OFF. Steering Unlock Switch State of steering unlock sensor signal output from steering lock actuator assembly/ON or OFF ON: Steering unlocked OFF: Steering locked When the shift lever is in P and the engine switch is off, if any door is opened or closed, the steering is locked. When the electrical key transmitter sub-assembly is in the cabin and the engine switch is turned on (ACC) or on (IG), the steering unlocks. The engine cannot be started when the steering unlock sensor signal is OFF. Stop Light Switch1 State of brake pedal/ON or OFF ON: Brake pedal depressed OFF: Brake pedal released Use this item to determine whether the stop light switch is malfunctioning. The engine cannot be started when this item is OFF. When this item is malfunctioning, the engine can be started by pressing and holding the engine switch for a certain period of time. Start Switch1 Engine switch 1 status/ON or OFF ON: Engine switch pressed OFF: Engine switch not pressed If the engine switch is pressed for a short time, the display may not change. Use this item to determine whether the engine switch input signal is malfunctioning. Start Switch2 Engine switch 2 status/ON or OFF ON: Engine switch pressed OFF: Engine switch not pressed Backup for engine switch 1. However, when the engine switch is pressed and held, the control functions only when both engine switch 1 and 2 are normal. Behaves the same way as engine switch 1. Neutral SW/ Clutch SW Shift position (P and N)/ON or OFF ON: Shift lever in P or N OFF: Shift lever in any position other than P or N Use this item to determine whether the park/neutral position switch is malfunctioning. When the engine cannot be started due to a park/neutral position switch malfunction, OFF is displayed. Latch Circuit Status of IG related backup circuits/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off Displays in almost the same manner as the IG1 and IG2 relays. When the engine switch is on (ACC), OFF is displayed. IG1 Relay Monitor(Outside) IG1 relay coil voltage monitor status/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off Use this item to determine whether the IG1 relay is malfunctioning. When the engine switch is on (ACC), OFF is displayed. IG1 Relay Monitor(Inside) IG1 relay activation/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off Use this item to determine whether the IG1 relay is malfunctioning. When the engine switch is on (ACC), OFF is displayed. IG2 Relay Monitor(Outside) IG2 relay coil voltage monitor status/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off Use this item to determine whether the IG2 relay is malfunctioning. When the engine switch is on (ACC), OFF is displayed. IG2 Relay Monitor(Inside) IG2 relay activation/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off Use this item to determine whether the IG2 relay is malfunctioning. When the engine switch is on (ACC), OFF is displayed. Starter Request Signal Engine start request signal status/ON or OFF ON: With the shift lever in P and brake pedal depressed, the engine switch is pressed and held OFF: After approx. 1 second has elapsed, the engine switch is released When the engine cannot be started due to a start request signal malfunction, OFF is displayed. When the engine switch is pressed, the duration of time that ON is displayed will be extremely short. As such, the engine switch needs to be pressed and held for a certain period of time. ACC Relay Monitor ACC relay activation/ON or OFF ON: Engine switch on (ACC) OFF: Engine switch off When the engine switch is on (IG), ON is displayed. While the engine is cranking, OFF is displayed. Engine Condition Engine state/Stop or Run Stop: Engine stopped Run: Engine running - Vehicle Speed Signal Vehicle being driven or stopped/Stop or Run Stop: Vehicle stopped Run: Vehicle being driven at 5 km/h (3 mph) or more - Power Supply Condition Power supply state/IG2 ON, ST ON, All OFF, IG1 ON or ACC ON All OFF: Engine switch off (ACC and IG) ACC ON: Engine switch on (ACC) IG1 ON: Engine switch on (IG) (IG1 relay on) IG2 ON: Engine switch on (IG) (IG2 relay on) ST ON: Sending engine start request signal Since the IG1 and IG2 relays turn on at approximately the same time, IG1 ON may not be displayed (the IG1 relay turns on for a very short time). Powertrain Type Vehicle identification/HV-AT, Cnv-MT, Cnv-AT, Cnv-MMT, S&S-MT, S&S-AT or S&S-MMT Cnv-AT: Conventional A/T models (w/o hybrid system) - IG1 Circuit IG1 relay coil circuit malfunction/OK or NG OK: Circuit normal NG: Circuit malfunctioning Use this item to determine whether the IG1 relay is malfunctioning. When the engine cannot be started due to an IG1 relay malfunction, NG is displayed. IG2 Circuit IG2 relay coil circuit malfunction/OK or NG OK: Circuit normal NG: Circuit malfunctioning Use this item to determine whether the IG2 relay is malfunctioning. When the engine cannot be started due to an IG2 relay malfunction, NG is displayed. Starter SW Sig Mismatch Engine switch signal 1 and 2 do not match/Yes or No Yes: Switch malfunctioning (Engine switch signal 1 and 2 do not match) No: Switch normal Even when Yes is displayed, the engine can be started. However, emergency engine off while driving by pressing and holding the engine switch, and when the brakes are malfunctioning, emergency engine starting by pressing and holding the engine switch cannot be performed. Park Signal Mismatch P position signal malfunction/Yes or No Yes: Signal malfunction (CAN communication and direct line signal do not match) No: Signal normal Even when Yes is displayed, it is still possible to turn the engine switch off (the power source mode will not be stuck in on (ACC) or on (IG)). Str Lock/Unlock Wait T-Out Steering lock or unlock malfunction/Yes or No Yes: Lock or unlock malfunction (e.g. steering lock is stuck etc.) No: Lock and unlock normal When the engine cannot be started due to a steering lock or unlock malfunction, Yes is displayed. Key Certif Wait T-Out Key verification malfunction/Yes or No Yes: Verification error (Detected due to the electrical key transmitter sub-assembly ID code and the ID code stored in the certification ECU (smart key ECU assembly) not matching) No: Verification normal When the engine cannot be started due to a key verification error, Yes is displayed. Number of Diagnosis Code Number of DTCs/0 to 255 - - HINT: To check if the Data List display changes, get into the vehicle while carrying an electrical key transmitter sub-assembly and perform the following operations with the engine switch off and the shift lever in P. *1: Press the engine switch with the brake pedal released and check that the engine switch turns on (ACC). *2: Press the engine switch with the brake pedal released and check that the engine switch turns on (IG). *3: Depress the brake pedal (stop light switch is on). *4: Press the engine switch with the brake pedal depressed and check that the engine starts. *5: Press the engine switch with the brake pedal depressed and check that the engine switch turns off. *6: Release the brake pedal. *7: Open a door. SMART ACCESS Tester Display Measurement Item/Range Normal Condition Diagnostic Note Ignition Switch Certification ECU (smart key ECU assembly) IG power supply input status/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off When the engine switch is on (ACC), OFF is displayed. #Codes Number of DTCs/0 to 255 - - Immobilizer Immobilizer system status determined by certification ECU (smart key ECU assembly)/Set or Unset Set: Immobilizer set (engine start prohibited) (engine switch off) Unset: Immobilizer unset (engine start permitted) (engine switch on (ACC) or on (IG)) The engine cannot be started when Set is displayed. HINT: The security indicator light blinks when Set is displayed. The security indicator light is linked with set/unset of the immobilizer and not linked with lock/unlock of the steering. Steering Lock Sleep Cond Steering lock ECU sleep availability/Yes or No Yes: Sleep available No: Sleep not available - Steering Lock Start Cond Steering lock ECU wake up signal status/Yes or No Yes: Wake up signal sent No: Wake up signal not sent - Engine Start Condition Status of engine start permission signal determined by steering lock ECU (steering lock actuator assembly) and sent to certification ECU (smart key ECU assembly)/OK or NG OK: Engine start permitted NG: Engine start prohibited When OK is displayed, the certification ECU (smart key ECU assembly) receives an unlock confirmation signal from the steering lock ECU (steering lock actuator assembly) and makes fuel injection and engine starting possible. The engine cannot be started when NG is displayed. Sensor Value History of malfunction of position sensor in steering lock ECU (steering lock actuator assembly)/OK or NG (Past) OK: History of malfunction for the lock or unlock sensor in the steering lock ECU (steering lock actuator assembly) does not exist. NG (Past): History of both the lock and unlock sensors in the steering lock ECU (steering lock actuator assembly) being on exists. (Under normal operation, neither sensor is on.) When NG (Past) is displayed, either the position sensor in the steering lock ECU (steering lock actuator assembly) or the assembly itself may be malfunctioning. Power Supply Short History of signal error (short) sent from certification ECU (smart key ECU assembly) to steering lock ECU (steering lock actuator assembly)/OK or NG (Past) OK: History of motor power source short does not exist NG (Past): History of motor power source short exists This item displays history of a malfunction in the circuit between the certification ECU (smart key ECU assembly) and the steering lock ECU (steering lock actuator assembly). Motor Driver Short History of malfunction (short) in steering lock ECU (steering lock actuator assembly) motor circuit (DTC B2781 is stored)/OK or NG (Past) OK: History of short in the motor circuit does not exist NG (Past): History of short in the motor circuit exists This item displays history of a malfunction in the steering lock motor circuit in the steering lock ECU (steering lock actuator assembly). Lock/Unlock Receive History of receiving an unlock request signal/Yes or No Yes: History of receiving an unlock request signal exists No: History of receiving an unlock request signal does not exist - Lock Bar Stuck Error History of steering not being able to unlock properly when steering lock operates for a certain period of time/OK or NG (Past) OK: History of steering lock being stuck does not exist NG (Past): History of steering lock being stuck exists - Push Start Error History of push-button start malfunction due to steering lock ECU (steering lock actuator assembly)/OK or NG (Past) OK: History of push-button start malfunction does not exist NG (Past): History of push-button start malfunction exists - Engine Start Request Status of engine start permission signal determined by steering lock ECU (steering lock actuator assembly) and sent to certification ECU (smart key ECU assembly)/OK or NG OK: Signal received NG: Signal not received When OK is displayed, the certification ECU (smart key ECU assembly) receives an unlock confirmation signal from the steering lock ECU (steering lock actuator assembly) and makes fuel injection and engine starting possible. The engine cannot be started when NG is displayed. S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box (immobilizer code ECU)/OK or NG OK: Verification result normal NG: Verification result abnormal When NG is displayed: The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobilizer code ECU) is not registered, or the certification ECU (smart key ECU assembly) or ID code box (immobilizer code ECU) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). L Code Check Verification result between ID code box (immobilizer code ECU) and steering lock ECU (steering lock actuator assembly)/OK or NG OK: Verification result normal NG: Verification result abnormal When NG is displayed: The ID code for the ID code box (immobilizer code ECU) or steering lock ECU (steering lock actuator assembly) is not registered, or the certification ECU (smart key ECU assembly) or steering lock ECU (steering lock actuator assembly) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). Unlock Request Receive Unlock request signal received state/OK or NG OK: Unlock request signal received within 10 seconds of engine switch turned on (IG) or on (ACC), or of an engine start operation being performed NG: Engine switch not turned on (IG) or on (ACC), and engine start operation not performed The engine cannot be started when an unlock request signal cannot be received. If OK is not displayed even though the steering unlock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning. Lock Request Receive Lock request signal received state/OK or NG HINT: The reception state is maintained for 10 seconds. When 10 seconds or more elapse after receiving the signal, the item changes to "NG". OK: Lock request signal received for 10 seconds of any of the doors being opened with shift lever in P and engine switch off. NG: Except above If OK is not displayed even though the steering lock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning. S Code Check(Past) Verification result history between the certification ECU (smart key ECU assembly) and ID code box (immobilizer code ECU)/OK or NG (Past) OK: History of abnormal verification result does not exist NG (Past): History of abnormal verification result exists - L Code Check(Past) Verification result history between the ID code box (immobilizer code ECU) and steering lock ECU (steering lock actuator assembly)/OK or NG (Past) OK: History of abnormal verification result does not exist NG (Past): History of abnormal verification result exists - Steering Lock Steering lock ECU (steering lock actuator assembly) lock confirmation status/Set or Unset Set: Lock confirmed Unset: Lock not confirmed When Unset is displayed, the steering is not locked. Steering Unlock Steering lock ECU (steering lock actuator assembly) unlock confirmation status/Set or Unset Set: Unlock confirmed Unset: Unlock not confirmed When Unset is displayed, the steering is not locked (the engine cannot be started). Engine Start Indicator Smart warning light/ON or OFF Customization status displayed - HINT: To check if the Data List display changes, get into the vehicle while carrying an electrical key transmitter sub-assembly and perform the following operations with the engine switch off and the shift lever in P. *1: Press the engine switch with the brake pedal released and check that the engine switch turns on (ACC). *2: Press the engine switch with the brake pedal released and check that the engine switch turns on (IG). *3: Press the engine switch and check that the engine switch turns off. *4: Open any of the doors (steering locked). STARTING CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Starter SW Starter operation request/ON or OFF ON: Starter operation requested OFF: Starter operation not requested When malfunctioning, the engine will not crank. Shift Position P or N Park/neutral position switch status/ON or OFF ON: Shift lever in P or N OFF: Shift lever in any position other than P or N When malfunctioning, the engine will not crank. Starter Relay Starter relay voltage monitor/ON or OFF ON: ST relay on OFF: ST relay off OFF is displayed when the engine cannot crank. Starting Control SW Starter request signal monitor/ON or OFF ON: Starting control switch on OFF: Starting control switch off When malfunctioning, the engine cannot crank. Ignition IG2 status/ON or OFF ON: IG2 relay on OFF: IG2 relay off - Engine Speed Engine speed/0 to 16383 r/min Fluctuates in accordance with engine speed - Number of DTCs Number of DTCs/0 to 255 - - HINT: *: Check that the engine starts when the engine switch is pressed with the power source mode on (IG), shift lever in P and brake pedal depressed. COMBINATION METER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Vehicle Speed Meter Vehicle speed/Min.: 0, Max.: 255 Almost same as actual vehicle speed (Speedometer tester)
2. 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. Perform Active Test according to the display on the Techstream. POWER SOURCE CONTROL Tester Display Test Part Control Range Diagnostic Note P Supply for Steering Lock Smart key ECU assembly OFF/ON HINT: OFF: Power is not supplied. ON: Power is supplied. When performing this Active Test, make sure the following condition is met: The engine switch is on (IG). SMART ACCESS Tester Display Test Part Control Range Diagnostic Note Power/Engine SW Light Engine switch light OFF/ON When performing this Active Test, make sure the following conditions are met: The engine switch illumination is off (15 seconds or more have elapsed since it turned from on to off) and the engine switch is on (ACC) or on (IG), or the engine is running. STARTING CONTROL Tester Display Test Part Control Range Diagnostic Note Activate the Starter Relay ST relay OFF/ON The electrical key transmitter sub-assembly is in the cabin and the engine is stopped.

DIAGNOSTIC TROUBLE CODE CHART [06/2012 - ]

SMART ACCESS SYSTEM WITH PUSH-BUTTON START (FOR START FUNCTION)