Smart Access System (Keyless Start) (Diagnostics - Introduction): Diagnosis Lexus GX J150

HOW TO PROCEED WITH TROUBLESHOOTING

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 are locked or unlocked, whether the engine switch is 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 entry ignition 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 to 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 thought 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 key was near the vehicle (electrical key antenna). If the system does not operate only when near specific vehicles (there may be an effect from electric waves from the wireless systems of other vehicles). If the system operates intermittently. If the key is bundled together with other items. If the key is carried together with other electronic devices, such as cell phones, personal computers, portable music players, other electrical keys, etc. (keep the key at least 0.1 m (0.33 ft.) away from such items). Where the key is being kept when not in use: Whether or not the key 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 electric waves placed in the vehicle. When the key battery was last replaced (when the battery is low): The key battery can be checked using the "Key Low Battery" item in the Data List. Refer to «OPERATION CHECK»(ref-524116-S13370729562013012800000) . 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. 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* Use the Techstream to check if the CAN communication system is functioning normally. Refer to «DIAGNOSIS SYSTEM»(ref-524289-S01570922952013012800000) . RESULT Result Proceed to CAN DTC is not output A CAN DTC is output B B --> GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-524289-S06634024762013012800000) A: Go to next step
5. CHECK FOR DTC* Check for DTCs and note any codes that are output. Refer to «DTC CHECK / CLEAR»(ref-524115-S25428165872013012800000) . RESULT Result Proceed to DTC is not output A Steering lock system DTC is output B Engine immobiliser system DTC is output C Smart access system with push-button start (for Entry Function) DTC is output D Smart access system with push-button start (for Start Function) DTC is output E B --> GO TO STEERING LOCK SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-524329-S22425066912013012800000) C --> GO TO ENGINE IMMOBILISER SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-524134-S18659050462013012800000) D --> GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-524116-S04794072512013012800000) E --> GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-524115-S20946139732013012800000) A: Go to next step
6. PROBLEM SYMPTOMS TABLE Refer to Problem Symptoms Table. Refer to «PROBLEM SYMPTOMS TABLE»(ref-524115-S02546612952013012800000) . 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»(ref-524115-S05434179612013012800000) . Terminals of ECU. Refer to «TERMINALS OF ECU»(ref-524115-S39692061602013012800000) . Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST»(ref-524115-S13606543242013012800000) . 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»(ref-524115-S25428165872013012800000) . Recheck for DTCs. Refer to «DTC CHECK / CLEAR»(ref-524115-S25428165872013012800000) . HINT: Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure. RESULT Result Proceed to DTC is not output A DTC is output B B --> GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-524115-S20946139732013012800000) A --> END

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1. OPERATION DESCRIPTION Smart ignition function: When the key is in the detection area inside the vehicle and the brake pedal is depressed, the engine is started by pressing the engine switch. When the key is in the 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 key when the engine switch is off, if the engine switch is pressed while not depressing the brake pedal, the power source mode changes to ACC and the engine switch indicator illuminates in amber. After getting into the vehicle while carrying the key when the engine switch is off, if the brake pedal is depressed while the shift lever is in P or N, the engine switch indicator illuminates in green. The engine starts if the engine switch is pressed when the engine switch indicator is illuminated in green. Changing the power source mode when the key does not operate correctly due to wave interference or key battery depletion: Unlock the door using the built-in mechanical key and get into the vehicle while carrying the key. While depressing the brake pedal, hold the ornament side of the key against the engine switch. When a buzzer sound is heard from the buzzer in the combination meter, release the brake pedal within 10 seconds. By pressing the engine switch while not depressing the brake pedal, the power source mode changes in the following order every time the engine switch is pressed: off --> on (ACC) --> on (IG) --> off. Starting the engine when the key does not operate correctly due to wave interference or key battery depletion: Unlock the door using the built-in mechanical key and get into the vehicle while carrying the key. While depressing the brake pedal with the shift lever in P or N, hold the ornament side of the key against the engine switch. When a buzzer sound is heard from the buzzer in the combination meter and the engine switch indicator illuminates in green, press the engine switch within 10 seconds while keeping the brake pedal depressed to start the engine.
2. CHECK SMART IGNITION FUNCTION Check the smart ignition function: Get into the vehicle while carrying the key with the engine switch off. With the shift lever in P, check that the engine switch indicator illuminates in green when the brake pedal is depressed. Then check that the engine starts when the engine switch is pressed after the engine switch indicator illuminates in green. While the brake pedal is released and the key 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 smart ignition operation range for the front side. Place the key in either of the two locations making sure that the key is oriented as shown in the illustration, and then check that the engine can be started. TEXT IN ILLUSTRATION *a Inspection Point NOTE: Even if the key is in the vehicle interior key detection area, the key may not be properly detected if the key is on the instrument panel, in the glove box or on the floor. If the key is within 0.2 m (0.66 ft.) of the shift lever, communication may not be possible. HINT: Perform this inspection for both inspection points. Check the smart ignition operation range for the rear side. Place the key in either of the two locations making sure that the key is oriented as shown in the illustration, and then check that the engine can be started. TEXT IN ILLUSTRATION *a Inspection Point NOTE: Even if the key is in the vehicle interior key detection area, the key may not be properly detected if the key is on the instrument panel, in the glove box or on the floor. If the key is within 0.2 m (0.66 ft.) of the center of the rear seat, communication may not be possible. HINT: Perform this inspection for both inspection points. Check the smart ignition operation range for the luggage compartment. Place the key in either of the two locations making sure that the key is oriented as shown in the illustration, and then check that the engine can be started. TEXT IN ILLUSTRATION *A w/ Rear No. 2 Seat Assembly *B w/o Rear No. 2 Seat Assembly *a Inspection Point HINT: Perform this inspection at both locations in the luggage compartment.
3. 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)* --> 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)* --> 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 N Depressed On (ACC) --> engine starts N Depressed On (IG) --> engine starts 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: *: This situation is only applicable when the power source mode has changed from on (IG) to on (ACC).
4. CHECK POWER SOURCE MODE INDICATION TEXT IN ILLUSTRATION *1 Engine Switch *2 Indicator Light Check the engine switch indicator. INDICATOR INSPECTION Engine Switch Indicator Off (Excludes condition in which engine can be started) Off On (ACC) (Excludes condition in which engine can be started) Illuminated in amber On (IG) (Excludes condition in which engine can be started) Illuminated in amber Condition in which engine can be started* Illuminated in green Engine started Off HINT: *: CONDITION IN WHICH ENGINE CAN BE STARTED IS AS FOLLOWS: The engine can be started by pressing the engine switch when either of the following conditions is met. Condition 1 All conditions are met: The key is verified* or the engine switch is on (ACC) or on (IG). The shift lever is in P or N. The stop light switch is on. Condition 2 All conditions are met: The power source mode has changed from on (IG) to on (ACC). The shift lever is in N. The stop light switch is on. *: When the key is in the vehicle, the ID code sent as a result from communication between the key and certification ECU and the ID code calculated by the certification ECU are compared. If the ID codes match each other, the vehicle recognizes that the key is in the vehicle. Indicator Condition Chart Indicator Vehicle State Off Either condition is met: The engine is running. The engine switch is off and the vehicle is in a state in which the engine does not start if the engine switch is pressed. Illuminated in green All conditions below are met and the vehicle is in a state in which the engine can be started if the engine switch is pressed: The key is inside the vehicle, the stop light switch is on and the shift lever is in P or N. Illuminated in amber The engine switch is on (ACC) or on (IG), and the vehicle is in a state in which the engine does not start if the engine switch is pressed. Blinking in green (1 second intervals) When the power is being turned on or the engine is being started, the steering fails to unlock (steering lock is stuck). The indicator starts blinking when the steering fails to unlock. The indicator stops blinking when 30 seconds elapse after blinking starts, or when the power is being turned on or the engine is being started again. Blinking in amber (2 second intervals) The steering lock ECU or the power management control ECU has an internal malfunction. The indicator starts blinking when the steering lock ECU or power management control ECU is determined to have an internal malfunction. The indicator stops blinking when the ECU returns to normal or 15 seconds elapse after blinking starts.

PROBLEM SYMPTOMS TABLE

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.

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

DIAGNOSIS SYSTEM

1. DESCRIPTION Smart access system with push-button start (for start function) data and the 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»(ref-524109-S16506494952013012800000) .
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

Note. 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 (the certification ECU, power management control ECU and main body ECU) 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 method below: 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 vehicle begins (the Techstream screen changes when communication begins). Connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: Body Electrical / Smart Access / Trouble Codes.

1. CHECK FOR DTC (POWER MANAGEMENT CONTROL ECU [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 (POWER MANAGEMENT CONTROL ECU [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) 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 (POWER MANAGEMENT CONTROL ECU [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 (POWER MANAGEMENT CONTROL ECU [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) 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. According to the display on the Techstream, read the Data List. 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 key is inside the vehicle and the engine switch is turned on (ACC) or on (IG), the steering unlocks. The engine cannot be started when the steering unlock 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 Condition of engine switch contact 1/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 Condition of engine switch contact 2/ON or OFF ON: Engine switch pressed OFF: Engine switch not pressed This is the backup for engine switch 1. Behaves the same way as engine switch 1. Neutral SW/ Clutch SW Shift position (P, N) (for Automatic Transmission) or state of clutch pedal (for Manual Transmission)/ON or OFF ON: Shift lever in P or N (for Automatic Transmission) or clutch pedal depressed (for Manual Transmission) OFF: Shift lever not in P or N (for Automatic Transmission) or clutch pedal released (for Manual Transmission) Use this item to help determine if the park/neutral position switch (for Automatic Transmission) or clutch switch (for Manual Transmission) is malfunctioning. The engine cannot be started when this item is "OFF". Latch Circuit Condition of IG related backup circuit (IG hold circuit)/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off This item behaves in almost the same way as the IG1 and IG2 relays. This item displays "OFF" when the engine switch is on (ACC). IG1 Relay Monitor(Outside) IG1 relay activation/ON or OFF ON: IG1 relay on OFF: IG1 relay off As this is the IG1 relay ON signal, this item displays "OFF" when the engine switch is on (ACC). IG1 Relay Monitor(Inside) IG1 relay activation/ON or OFF ON: IG1 relay on OFF: IG1 relay off As this is the IG1 relay ON signal, this item displays "OFF" when the engine switch is on (ACC). IG2 Relay Monitor(Outside) IG2 relay activation/ON or OFF ON: IG2 relay on OFF: IG2 relay off As this is the IG2 relay ON signal, this item displays "OFF" when the engine switch is on (ACC). IG2 Relay Monitor(Inside) IG2 relay activation/ON or OFF ON: IG2 relay on OFF: IG2 relay off As this is the IG2 relay ON signal, this item displays "OFF" when the engine switch is on (ACC). Starter Request Signal Condition of engine start command signal/ON or OFF ON: Engine switch pressed and held while carrying key with shift lever in P and brake pedal depressed OFF: Engine switch released after approximately 1 second elapses This item displays "ON" when cranking the engine. The engine cannot be started when this item is "OFF". ACC Relay Monitor ACC relay activation/ON or OFF ON: ACC relay on OFF: ACC relay off This item displays "ON" when the engine switch is on (ON). This item displays "OFF" when cranking the engine. Engine Condition Condition of engine/Stop or Run Stop: Engine stopped Run: Engine running - Vehicle Speed Signal Vehicle moving or stationary/Stop or Run Stop: Vehicle stopped Run: Vehicle moving at 5 km/h (3 mph) or more - Power Supply Condition State of power supply/IG2 ON, ST ON, All OFF, IG1 ON or ACC ON All OFF: Engine switch off (power supply off) ACC ON: Engine switch on (ACC) (ACC relay on) IG1 ON: Engine switch on (IG) (IG1 relay on) IG2 ON: Engine switch on (IG) (IG2 relay on) ST ON: Cranking engine (ST request signal on) Since IG1 ON and IG2 ON turn "on" at approximately the same time, IG1 ON may not be displayed (IG1 ON 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, S&S-MMT Cnv-AT: Conventional A/T (A/T vehicle not equipped with hybrid system) - IG1 Circuit IG1 relay coil circuit malfunction/OK or NG OK: Circuit normal NG: Circuit malfunctioning Use this item when determining whether the IG1 relay is malfunctioning. The engine cannot be started when this item displays "NG". IG2 Circuit IG2 relay coil circuit malfunction/OK or NG OK: Circuit normal NG: Circuit malfunctioning Use this item when determining whether the IG2 relay is malfunctioning. The engine cannot be started when this item displays "NG". Starter SW Sig Mismatch Engine switch signal 1 and 2 mismatch/Yes or No Yes: Switch malfunctioning (engine switch signal 1 and 2 do not match) No: Switch normal The engine can be started, even if this item displays "Yes". Park Signal Mismatch Shift position (P) signal malfunction/Yes or No Yes: Signal malfunction (CAN communication and direct line signal do not match) No: Signal normal The engine cannot be started when this item displays "Yes". Str Lock/Unlock Wait T-Out Steering lock or unlock malfunction/Yes or No Yes: Lock/unlock malfunctioning (Lock bar stuck, etc.) No: Lock/unlock normal The engine cannot be started when this item displays "Yes". Key Certif Wait T-Out Key verification malfunction/Yes or No Yes: Verification error (detected when ID code from key and ID stored in certification ECU do not match) No: Verification normal The engine cannot be started when this item displays "Yes". Number of Diagnosis Code Number of DTCs/0 to 255 - - HINT: Get into the vehicle while carrying the key. With the engine switch off and the shift lever in P, perform the following procedures and check the power source mode. *1: Without depressing the brake pedal, press the engine switch and check that the power source mode turns on (ACC). *2: Without depressing the brake pedal, press the engine switch and check that the power source mode turns on (IG). *3: Depress the brake pedal (the stop light switch turns on). *4: With the brake pedal depressed, press the engine switch and check that the engine starts. *5: Press the engine switch and check that the power source mode turns off. *6: Release the brake pedal. *7: Open a door. SMART ACCESS Tester Display Measurement Item/Range Normal Condition Diagnostic Note Ignition Switch State of certification ECU IG power supply input/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off This item displays "OFF" when the engine switch is on (ACC). #Codes Number of DTCs/0 to 255 - - Immobiliser State of immobiliser system determined by certification ECU/Set or Unset Set: Engine immobiliser set (engine switch off) Unset: Engine immobiliser unset (engine switch on [ACC] or on [IG]) When the immobiliser cannot be unset, this item can be used to determine whether the certification ECU or ID code box is part of the problem. The engine cannot be started when this item displays "Set". HINT: The state of the immobiliser (whether it is set or unset) can be determined through the certification ECU. If this item displays "Set", the communication between the certification ECU and ID code box can be determined to be normal. The security indicator light operation is only linked with the state of the immobiliser (set/unset), and is not related to the steering lock operation (lock/unlock), when the immobiliser is set, the security indicator light blinks. Steering Lock Sleep Cond Steering lock ECU sleep condition/Yes or No - - Steering Lock Start Cond Transmission state of steering lock ECU wake up signal/Yes or No Yes: Wake up signal transmitted No: Wake up signal not transmitted - Engine Start Condition State of engine start permission signal determined by steering lock actuator assembly (steering lock ECU) and sent to certification ECU/OK or NG OK: Engine start permitted NG: Engine start prohibited When this item displays "OK", the certification ECU has received an unlock confirmation signal from the steering lock ECU and has permitted fuel injection and engine combustion. The engine cannot be started when this item displays "NG". Sensor Value Malfunction history of position sensor in steering lock actuator/OK or NG(Past) OK: No record of lock/unlock sensor malfunction in steering lock actuator NG(Past): Record of lock/unlock sensor in steering lock actuator turning ON at same time exists When this item displays "NG", the sensor inside the steering lock actuator may be malfunctioning, or there may be a mechanical malfunction. Power Supply Short Record of malfunction of signal sent to steering lock actuator assembly (motor) from power management control ECU (short circuit)/OK or NG(Past) OK: No record of malfunction (short circuit) NG(Past): Record of malfunction (short circuit) exists This item records malfunctions in the circuit between the power management control ECU and steering lock actuator assembly (motor). Power Supply Open Record of malfunction of signal sent to steering lock actuator assembly (motor) from power management control ECU (open circuit) (DTC B2782 stored)/OK or NG(Past) OK: No record of malfunction (open circuit) NG(Past): Record of malfunction (open circuit) exists This item records malfunctions in the circuit between the power management control ECU and steering lock actuator assembly (motor). Motor Driver Short Record of malfunction of motor activation circuit in steering lock actuator assembly (short circuit) (DTC B2781 stored)/OK or NG(Past) OK: No record of malfunction (short circuit) NG(Past): Record of malfunction (short circuit) exists This item records malfunctions in the motor activation circuit inside the steering lock actuator assembly (short circuit). Motor Driver Open Record of malfunction of motor activation circuit in steering lock actuator assembly (open circuit) (DTC B2781 stored)/OK or NG(Past) OK: No record of malfunction (open circuit) NG(Past): Record of malfunction (open circuit) exists This item records malfunctions in the motor activation circuit inside the steering lock actuator assembly (open circuit). Lock/Unlock Receive Reception state of steering lock or unlock request signal from certification ECU/Yes or No Yes: Record of receiving lock or unlock request signal exists No: No record of receiving lock or unlock request signal - Lock Bar Stuck Error Record of lock bar not properly unlocking after being commanded to unlock for certain amount of time/OK or NG(Past) OK: No record of stuck lock bar NG(Past): Record of stuck lock bar exists - Push Start Error Record of malfunction of push-start function due to steering lock actuator/OK or NG(Past) OK: No record of push-start function malfunction NG(Past): Record push-start function malfunction exists - IG2 Status State of steering lock actuator assembly IG power supply input (direct line)/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off As this is the IG2 relay ON signal, this item displays "OFF" when the engine switch is on (ACC). IG(Lin) State of IG signal from LIN communication recognized by steering lock actuator assembly/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off The display is the same as "IG2 Status". Engine Start Request Reception state of engine start permission signal determined by steering lock actuator assembly and sent to certification ECU/OK or NG OK: Receiving signal NG: Not receiving signal When this item displays "OK", the certification ECU has received an unlock confirmation signal from the steering lock ECU and has permitted fuel injection and engine combustion. The engine cannot be started when this item displays "NG". S Code Check Verification result between certification ECU and ID code box/OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the certification ECU or ID code box is not registered or the certification ECU or ID code box 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 and steering lock actuator assembly/OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the ID code box or steering lock actuator assembly is not registered or the ID code box or steering lock actuator is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). Unlock Request Receive Reception state of steering unlock command signal sent to ID code box determined by certification ECU/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: Within 10 seconds of turning engine switch on (IG) or on (ACC) or starting engine NG: Except above If the unlock signal has not been received, the engine cannot be started. If this item does not change to "OK" even though the steering unlock conditions are met, the certification ECU may be malfunctioning. Lock Request Receive Reception state of steering lock command signal sent to ID code box determined by certification ECU/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: Within 10 seconds of opening any door with engine switch off and shift lever in P NG: Except above If this item does not change to "OK" even though the steering lock conditions are met, the certification ECU may be malfunctioning. S Code Check(Past) Verification result between certification ECU and ID code box (Past)/OK or NG(Past) OK: Verification result normal NG(Past): Verification result abnormal (Past) - L Code Check(Past) Verification result between ID code box and steering lock actuator assembly (Past)/OK or NG(Past) OK: Verification result normal NG(Past): Verification result abnormal (Past) - Steering Lock State of whether steering lock ECU has determined steering is locked/Set or Unset Set: Steering locked Unset: Steering unlocked If this item displays "Unset", the steering does not lock. Steering Unlock State of whether steering lock ECU determined steering is unlocked/Set or Unset Set: Steering unlocked Unset: Steering locked If this item displays "Unset", the steering does not unlock (engine cannot be started). HINT: Get into the vehicle while carrying the key. With the engine switch off, the shift lever in P and all the doors closed, perform the following procedures and check the power source mode. *1: Without depressing the brake pedal, press the engine switch and check that the power source mode turns on (ACC). *2: Without depressing the brake pedal, press the engine switch and check that the power source mode turns on (IG). *3: Press the engine switch and check that the power source mode turns off. *4: Release the brake pedal, open the driver side door and check that the steering locks. STARTING CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Starter SW Power management control ECU starter activation request/ON or OFF ON: Starter activation requested OFF: Starter activation not requested When there is a malfunction, the engine cannot be cranked. Shift Position P or N Condition of park/neutral position switch/ON or OFF ON: Shift lever in P or N OFF: Shift lever not in P or N When there is a malfunction, the engine cannot be cranked. Starter Relay Starter relay voltage monitor/ON or OFF ON: ST relay on OFF: ST relay off When there is a malfunction, the engine cannot be cranked. Starting Control SW Starter request signal monitor/ON or OFF ON: Starting control switch on OFF: Starting control switch off When there is a malfunction, the engine cannot be cranked. Ignition State of IG2 according to power management control ECU/ON or OFF ON: IG2 relay on OFF: IG2 relay off This item displays "OFF" when the engine switch is on (ACC). Engine Speed Engine speed/0 to 16383 r/min Changes according to engine speed - Number of DTCs Number of DTCs/0 to 255 - - HINT: *: With the engine switch on (IG), the shift lever in P and the brake pedal depressed, press the engine switch and check that the engine starts. COMBINATION METER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Vehicle Speed Meter Vehicle speed/Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) 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. According to the display on the Techstream, perform the Active Test. POWER SOURCE CONTROL Tester Display Test Part Control Range Diagnostic Note Indicator Condition Engine switch indicator Green/Red/No Sig When performing this Active Test, make sure the following condition is met: The engine switch is off or the engine is running. P Supply for Steering Lock Power management control ECU ON/OFF HINT: ON: Power is supplied. OFF: Power is not 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 ON/OFF When performing this Active Test, make sure the following condition is 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 When performing this Active Test, make sure the following conditions are met: The key is in the vehicle. The engine is stopped.

DIAGNOSTIC TROUBLE CODE CHART

HINT

If a trouble code is output during the DTC check, refer to the "See page" below.

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