Steering Lock System (Diagnostics - Introduction): Diagnosis Scion FR-S I

HOW TO PROCEED WITH TROUBLESHOOTING [12/2013 - ]

HINT

1. Use the following procedures to troubleshoot the steering lock system.
2. *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. CUSTOMER PROBLEM ANALYSIS 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. HINT: A simple method to determine whether the battery is depleted is to operate the horn. NEXT: Go to next step
4. CHECK DTC* Check for DTCs and make a note of any codes that are output. Refer to «DTC CHECK / CLEAR [12/2013 - ]»(ref-612423-S20015669982014042900000) . RESULT Result Proceed to No DTCs output Problem symptom can be confirmed and reproduced A Problem symptom cannot be confirmed or reproduced B Steering lock system DTCs output C LIN communication DTCs output D HINT: When steering lock system DTCs are output, refer to Diagnostic Trouble Code Chart. Refer to «DIAGNOSTIC TROUBLE CODE CHART [12/2013 - ]»(ref-612423-S01466921822014042900000) . The steering lock system does not store past DTCs. B --> USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [12/2013 - ]»(ref-612229-S19729599862014042900000) C --> Go to step 7 D --> GO TO LIN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to «DIAGNOSTIC TROUBLE CODE CHART [12/2013 - ]»(ref-612424-S22318455712014042900000) A: Go to next step
5. PROBLEM SYMPTOMS TABLE Refer to Problem Symptoms Table. Refer to «PROBLEM SYMPTOMS TABLE [12/2013 - ]»(ref-612423-S19457547502014042900000) . RESULT Result Proceed to Fault not listed in problem symptoms table A Fault listed in problem symptoms table B B --> Go to step 7 A: Go to next step
6. OVERALL ANALYSIS AND TROUBLESHOOTING* Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST [12/2013 - ]»(ref-612423-S32845332152014042900000) . Terminals of ECU. Refer to «TERMINALS OF ECU [12/2013 - ]»(ref-612423-S37109692332014042900000) . NEXT: Go to next step
7. REPAIR OR REPLACE NEXT: Go to next step
8. CHECK DTC AGAIN* Clear the DTCs. Refer to «DTC CHECK / CLEAR [12/2013 - ]»(ref-612423-S20015669982014042900000) . Check for DTCs and make a note of any codes that are output. Refer to «DTC CHECK / CLEAR [12/2013 - ]»(ref-612423-S20015669982014042900000) . HINT: Perform the DTC output confirmation operation. RESULT Result Proceed to No DTCs output A DTCs output B B --> GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART [12/2013 - ]»(ref-612423-S01466921822014042900000) A --> END

PROBLEM SYMPTOMS TABLE [12/2013 - ]

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 this system before inspecting the suspected areas below.

STEERING LOCK SYSTEM

Scheme 64

Scheme 65

1. STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) Disconnect the D59 steering lock actuator assembly (steering lock ECU) connector. Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item D59-1 (GND) - Body ground - B - Body ground Ground*2 Always Below 1 ohms - D59-3 (SLR+) - D59-1 (GND) Input Y - B Steering lock motor activation command signal (motor activation command signal sent from certification ECU (smart key ECU assembly)) Any door opened when conditions below met, and then steering lock motor activated: Shift lever in P*1 Steering lock unlocked in advance by carrying key and turning engine switch on (IG) After above condition met, engine switch turned off Pulse generation (see waveform) Smart Key Power Supply Short Unlock Request Receive Lock Request Receive D59-4 (SLP) - D59-1 (GND) Output LG - B Steering lock bar position signal (output signal from steering unlock sensor) Steering locked --> unlocked 11 to 14 V --> Below 1.2 V Smart Key Push Start Error Sensor Value D59-5 (LIN) - D59-1 (GND) Input/Output W - B LIN communication line - - Smart Key Steering Lock Start Cond D59-6 (IGN1) - D59-1 (GND) Input BR - B Power source mode signal (IG2 power supply input for entire steering lock actuator assembly)*2 Engine switch off --> engine switch on (IG) Below 1 V --> 11 to 14 V Smart Key Ignition Switch D59-7 (B) - Body ground Input SB - Body ground Power source*2 Always 11 to 14 V - *1: for Automatic Transmission *2: When there is a problem with the power source input, the certification ECU (smart key ECU assembly) may store DTC B2786. NOTE: There is 1 motor and 2 sensors built into the steering lock actuator assembly. HINT: When taking measurements when the lock motor is stopped, it is not necessary to perform any operations. In order to take measurements when the lock motor is operating, perform either of the following operations: To unlock the steering, carry the key and turn the engine switch on (ACC) or on (IG). To lock the steering, turn the engine switch off with the shift lever in P*, and then open a door. *: for Automatic Transmission Waveform Item Content Tester Connection D59-3 (SLR+) - D59-1 (GND) Tool Setting 2 V/DIV., 200 ms./DIV. Vehicle Condition Steering lock motor not operating --> Steering lock motor operating --> Steering lock motor not operating TEXT IN ILLUSTRATION *a Steering lock motor not operating *b Steering lock motor operating

DIAGNOSIS SYSTEM [12/2013 - ]

1. DESCRIPTION The steering lock actuator assembly (steering lock ECU) stores DTCs when a malfunction occurs in the system. These DTCs can be confirmed by using the Techstream. NOTE: When using the Techstream with the engine switch off to confirm DTCs or Data List information related to the smart key system, the Techstream may not operate unless either of the following is performed: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle and select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. Do not remove any fuses or disconnect the cable from the negative (-) battery terminal before confirming and recording DTCs as the data stored in the ECUs will be cleared. DTCs may have been stored due to problems unrelated to the steering lock actuator assembly (steering lock ECU) system. Be sure to confirm and record any DTCs output for other systems. The steering lock actuator assembly (steering lock ECU) is not connected to the CAN communication system. Therefore, communication with the Techstream is performed via the certification ECU (smart key ECU assembly). The steering lock actuator assembly (steering lock ECU) only stores DTCs for currently existing malfunctions. Past DTCs are not stored.

DTC CHECK / CLEAR [12/2013 - ]

Note. The steering lock actuator assembly (steering lock ECU) does not store past DTCs. If any DTCs are output, confirm and record them as soon as possible. Do not turn the engine switch off or clear the DTCs until the DTCs are confirmed and recorded. DTCs may have been stored due to problems unrelated to the steering lock actuator assembly (steering lock ECU) system. Be sure to confirm and record any DTCs output for other systems. When using the Techstream with the 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 Key. 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.

1. CHECK FOR DTC (MAIN BODY ECU (NETWORK GATEWAY ECU)) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Main Body / DTC. Check for DTCs.
2. CHECK FOR DTC (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) HINT: The steering lock system DTCs are output from the steering lock actuator assembly (steering lock ECU) via the certification ECU (smart key ECU assembly). Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / DTC. Check for DTCs.
3. CLEAR DTC (MAIN BODY ECU (NETWORK GATEWAY ECU)) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Main Body / DTC. Clear the DTCs.
4. CLEAR DTC (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / DTC. Clear the DTCs.

Scheme 66

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. Turn the engine switch off. 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. Using the Techstream, confirm the Data List items to help determine the cause of the problem. NOTE: The steering lock actuator assembly (steering lock ECU) communicates with the Techstream through the certification ECU (smart key ECU assembly) which uses CAN communication. If the CAN communication system or certification ECU (smart key ECU assembly) is malfunctioning, Data List items may not be normal. When using the Techstream with the 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 Key. 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. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Shift P Signal*1 Shift position (P) signal / OFF or ON OFF: Shift lever is not in P ON: Shift lever in P Use this item to determine if the shift position switch is malfunctioning. Steering Unlock Switch State of steering unlock sensor signal output from steering lock actuator assembly / OFF or ON OFF: Steering locked (Engine switch off) ON: Steering unlocked (Engine switch on (ACC) or on (IG)) The steering will be locked when any door is opened (or closed) while the vehicle is set to IG OFF and the shift lever in P*1. The steering will be unlocked when the electrical key transmitter sub-assemblies are inside the vehicle and the vehicle is set to on (ACC) or on (IG). Str Lock/Unlock Wait T-Out Steering lock or unlock malfunction / No or Yes No: Steering locks/unlocks normally within specified time Yes: Steering lock/unlock timed out (Lock bar stuck, etc.) The engine cannot be started when this item is "Yes". *1: for Automatic Transmission SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Ignition Switch State of certification ECU (smart key ECU assembly) IG power supply input / OFF or ON OFF: Engine switch off ON: Engine switch on (IG) This item displays "OFF" when the engine switch is on (ACC). Immobiliser State of immobiliser system determined by certification ECU (smart key ECU assembly) / Set or Unset Unset: Engine immobiliser unset (engine switch on (ACC) or on (IG)) Set: Engine immobiliser set (engine switch off) The engine cannot be started when this item displays "Set". HINT: The security indicator light blink when this item is "Set". The security indicator light is linked to the immobiliser set and unset state. This is unrelated to the steering lock/unlock states. Steering Lock Sleep Cond steering lock actuator assembly (steering lock ECU) sleep condition / No or Yes No: Sleep not permitted Yes: Sleep permitted - Steering Lock Start Cond Transmission state of steering lock actuator assembly (steering lock ECU) wake up signal / No or Yes No: Wake up signal not transmitted Yes: Wake up signal transmitted - Engine Start Condition State of engine start permission signal determined by steering lock actuator assembly (steering lock ECU) and sent to certification ECU (smart key ECU assembly) / OK or NG OK: Engine start permitted NG: Engine start prohibited When this item displays "OK", the certification ECU (smart key ECU assembly) has received an unlock confirmation signal from the steering lock actuator assembly (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 certification ECU (smart key ECU assembly) (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 certification ECU (smart key ECU assembly) 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). Lock/Unlock Receive Reception state of steering lock or unlock request signal from certification ECU (smart key ECU assembly) / No or Yes No: No record of receiving lock or unlock request signal Yes: Record of receiving lock or unlock request signal exists - 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 - Engine Start Request Reception state of engine start permission signal determined by steering lock actuator assembly and sent to certification ECU (smart key ECU assembly) / OK or NG OK: Receiving signal NG: Not receiving signal When this item displays "OK", the certification ECU (smart key ECU assembly) has received an unlock confirmation signal from the steering lock actuator assembly (steering lock ECU) and has permitted fuel injection and engine combustion. The engine cannot be started when this item displays "NG". S Code Check*1 Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) / OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the ID code box (immobiliser code ECU) or certification ECU (smart key ECU assembly) is not registered or the ID code box (immobiliser code ECU) or certification ECU (smart key ECU assembly) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). L Code Check*1 Verification result between ID code box (immobiliser code ECU) 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 (immobiliser code ECU) or steering lock actuator assembly (steering lock ECU) is not registered or the ID code box (immobiliser code ECU) or steering lock actuator assembly (steering lock ECU) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). L Code Check*2 Verification result between certification ECU (smart key ECU assembly) 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 certification ECU (smart key ECU assembly) or steering lock actuator assembly (steering lock ECU) is not registered or the certification ECU (smart key ECU assembly) or steering lock actuator assembly (steering lock ECU) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). Unlock Request Receive*1 Reception state of steering unlock command signal determined by certification ECU (smart key ECU assembly) and sent to ID code box (immobiliser code 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 (smart key ECU assembly) may be malfunctioning. Unlock Request Receive*2 Reception state of steering unlock command signal determined by certification ECU (smart key ECU assembly) / 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 (smart key ECU assembly) may be malfunctioning. Lock Request Receive*1 Reception state of steering lock command signal determined by certification ECU (smart key ECU assembly) and sent to ID code box (immobiliser code 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*3 NG: Except above If this item does not change to "OK" even though the steering lock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning. Lock Request Receive*2 Reception state of steering lock command signal determined by certification ECU (smart key ECU assembly) / 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*3 NG: Except above If this item does not change to "OK" even though the steering lock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning. S Code Check(Past)*1 Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) (Past) / OK or NG (Past) OK: Verification result normal NG: Verification result abnormal (Past) - L Code Check(Past)*1 Verification result between ID code box (immobiliser code ECU) and steering lock actuator assembly (Past) / OK or NG (Past) OK: Verification result normal NG: Verification result abnormal (Past) - L Code Check(Past)*2 Verification result between certification ECU (smart key ECU assembly) and steering lock actuator assembly (Past) / OK or NG (Past) OK: Verification result normal NG: Verification result abnormal (Past) - # Codes Number of DTCs / 0 to 255 - - *1: w/ ID Code Box *2: w/o ID Code Box *3: for Automatic Transmission Unlock operation conditions for the steering lock: When the following condition is met, the unlock operation is performed. The engine switch is on (ACC) or on (IG). When the engine switch is turned on (ACC) or on (IG), and the key and certification ECU (smart key ECU assembly) are verified, the steering is unlocked. HINT: When any of the following conditions are met, key verification is performed. The brake pedal (for automatic transmission) or clutch pedal (for manual transmission) is depressed so that the engine can be started. 30 seconds elapse after opening and closing a door. The engine switch is pressed. Key verification occurs when the code emitted from the key and the code stored in the certification ECU (smart key ECU assembly) are compared to check that they match. Certification ECU (smart key ECU assembly) verification occurs when the S code and L code are verified while the engine is being started or the engine switch is being pushed. The S code is used for certification between the ID code box (immobiliser code ECU) and the certification ECU (smart key ECU assembly). The L code is used for certification between the ID code box (immobiliser code ECU) and the steering lock actuator assembly (steering lock ECU).*1 Certification ECU (smart key ECU assembly) verification occurs when the L code is verified while the engine is being started or the engine switch is being pushed. The L code is used for certification between the certification ECU (smart key ECU assembly) and the steering lock actuator assembly (steering lock ECU).*2 *1: w/ ID Code Box *2: w/o ID Code Box Lock operation conditions for the steering lock: When the following conditions are met and the certification ECU (smart key ECU assembly) has been verified, the lock operation is performed. The engine switch is off. The shift lever in P (for automatic transmission). A door is opened or a door lock operation (entry door lock or wireless door lock is performed. HINT: The following example shows the behavior of various Data List items when the shift lever in P (for automatic transmission), the brake pedal (for automatic transmission) or clutch pedal (for manual transmission) is not depressed, the vehicle is normal and the power source mode changes. HINT: Get into the vehicle while carrying the key. With the engine switch off, the shift lever in P (for automatic transmission) and all the doors closed, perform the following procedures and check the power source mode. *1: Without depressing the brake pedal (for automatic transmission) or clutch pedal (for manual transmission), press the engine switch and check that the power source mode turns on (ACC). *2: Without depressing the brake pedal (for automatic transmission) or clutch pedal (for manual transmission), 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 (for automatic transmission) or clutch pedal (for manual transmission), open the driver side door and check that the steering locks. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note D Door Courtesy SW Driver side door courtesy switch / ON or OFF ON: Driver side door open OFF: Driver side door closed If this item does not change according to the actual state of the driver side door, there is a malfunction in the door courtesy light switch or related part.

DIAGNOSTIC TROUBLE CODE CHART [12/2013 - ]

STEERING LOCK SYSTEM

1. *: for Automatic Transmission