Smart Key System (For Start Function) (Diagnostic Codes & Symptom Tests): Other

CAUTION / NOTICE / HINT

HINT

When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

Scheme 224

Scheme 224: PROCEDURE

READ VALUE USING TECHSTREAM (VEHICLE SPEED METER) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Combination Meter / Data List. Read the Data List according to the display on the Techstream. Body Electrical > Combination Meter > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Vehicle Speed Meter Vehicle speed 0 to 255 Almost same as actual vehicle speed - Body Electrical > Combination Meter > Data List Tester Display Vehicle Speed Meter OK The Techstream display changes correctly in response to the vehicle condition. Result Proceed to OK NG Result: 2 NG GO TO METER / GAUGE SYSTEM (Speedometer Malfunction). Refer to «Speedometer Malfunction [08/2013 - 04/2014]»(ref-635609-S20082000192014070300000) & «Speedometer Malfunction [04/2014 - ]»(ref-635609-S07762265992014070300000) Result: 1 OK See step 2
READ VALUE USING TECHSTREAM (VEHICLE SPEED SIGNAL) Enter the following menus: Body Electrical / Power Source Control / Data List. Read the Data List according to the display on the Techstream. Body Electrical > Power Source Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note 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 - Body Electrical > Power Source Control > Data List Tester Display Vehicle Speed Signal OK The Techstream display changes correctly in response to the vehicle condition. Result Proceed to OK NG Result: 1 OK GO TO METER / GAUGE SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]»(ref-635440-S29828934222014070300000) Result: 2 NG See step 3
CHECK HARNESS AND CONNECTOR (POWER SOURCE) See step 1 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE Result: 1 OK See step 4
CHECK HARNESS AND CONNECTOR (GROUND) See step 2 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 5
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - COMBINATION METER ASSEMBLY) Disconnect the E59 certification ECU (smart key ECU assembly) connector. Disconnect the E43 combination meter assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E59-27 (SPD) - E43-6 (+S) Always Below 1 ohms E59-27 (SPD) or E43-6 (+S) - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 2 NG See step 7 Result: 1 OK See step 6
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Reconnect the E57 and E59 certification ECU (smart key ECU assembly) connectors. Reconnect the E43 combination meter assembly connector. Using an oscilloscope, check the waveform. *a Component with harness connected (Certification ECU (Smart Key ECU Assembly)) - - Tester Connection Condition Tool Setting Specified Condition E59-27 (SPD) - E57-11 (E) Engine switch on (IG), vehicle being driven at approx. 5 km/h (3 mph) 5 V/DIV., 20 ms./DIV. Pulse generation HINT: When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows. OK The waveform is similar to that shown in the illustration. Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 2 NG GO TO METER / GAUGE SYSTEM (Speed Signal Circuit). Refer to «Speed Signal Circuit [08/2013 - 04/2014]»(ref-635609-S31140797282014070300000) & «Speed Signal Circuit [04/2014 - ]»(ref-635609-S11197342392014070300000)
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Disconnect the 3D driver side junction block assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E43-6 (+S) - 3D-28 Always Below 1 ohms E43-6 (+S) or 3D-28 - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 8
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E59-27 (SPD) - 3D-11 Always Below 1 ohms E59-27 (SPD) or 3D-11 - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 9
INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY Remove the driver side junction block assembly. Refer to «REMOVAL [08/2013 - ]»(ref-635627-S03921509152014070300000) Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly. Refer to «REMOVAL [08/2013 - ]»(ref-635627-S03921509152014070300000) Measure the resistance according to the value(s) in the table below. *a Component without harness connected (Driver Side Junction Block Assembly) - - Standard Resistance Tester Connection Condition Specified Condition 3D-11 - 3D-28 Always Below 1 ohms Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 2 NG REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL [08/2013 - ]»(ref-635627-S03921509152014070300000)

HINT

When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

PROCEDURE

READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH1) 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 / Data List. Read the Data List according to the display on the Techstream. Body Electrical > Power Source Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Stop Light Switch 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. Body Electrical > Power Source Control > Data List Tester Display Stop Light Switch OK The Techstream display changes correctly in response to the brake pedal operation. Result Proceed to OK NG Result: 2 NG GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) for 2ZR-FE: Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]»(ref-635447-S15395893242014070300000) for 2ZR-FAE: Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]»(ref-635448-S20436684222014070300000) Result: 1 OK See step 2
CHECK HARNESS AND CONNECTOR (POWER SOURCE) See step 1 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE Result: 1 OK See step 3
CHECK HARNESS AND CONNECTOR (GROUND) See step 2 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 4
INSPECT STOP LIGHT SWITCH ASSEMBLY Refer to «INSPECTION [08/2013 - ]»(ref-635610-S22400919852014070300000) Result Proceed to OK NG Result: 2 NG REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL [08/2013 - ]»(ref-635610-S39537211682014070300000) Result: 1 OK See step 5
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STOP LIGHT SWITCH ASSEMBLY) Disconnect the A1 stop light switch assembly connector. Measure the resistance according to the value(s) in the table below. *a Rear view of wire harness connector (to Certification ECU (Smart Key ECU Assembly)) Standard Resistance Tester Connection Condition Specified Condition E57-18 (STP1) - A1-1 Always Below 1 ohms E57-18 (STP1) or A1-1 - Body ground Always 10 kohms or higher Reconnect the A1 stop light switch assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E57-18 (STP1) - Body ground Brake pedal released 1 V or less Brake pedal depressed 9 V or higher Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR

Note. When using the Techstream with the engine switch off, connect the Techstream to the DLC3 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. The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] Before replacing the certification ECU (smart key ECU assembly) or steering lock ECU (steering lock actuator assembly), refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [08/2013 - ] Inspect the fuses of circuits related to this system before performing the following procedure. After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

HINT

When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

Scheme 225

Scheme 225: PROCEDURE

CHECK FOR DTC (LIN COMMUNICATION SYSTEM) Check for DTCs. Body Electrical > Smart Key > Trouble Codes HINT: If the steering cannot be unlocked, the engine switch cannot be turned on (IG) and the engine cannot be started. If LIN communication is not available, the steering cannot be locked or unlocked. OK LIN communication system DTC B2785 is not output simultaneously. Result Proceed to OK NG Result: 2 NG GO TO DTC B2785. Refer to «DTC B2785: Communication Malfunction between ECUs Connected by LIN [08/2013 - ]»(ref-635674-S37005214182014070300000) Result: 1 OK See step 2
READ VALUE USING TECHSTREAM (STEERING UNLOCK SWITCH) 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 / Data List. Read the Data List according to the display on the Techstream. Body Electrical > Power Source Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note 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 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. Body Electrical > Power Source Control > Data List Tester Display Steering Unlock Switch *: except Manual Transaxle Result Result Proceed to Techstream display does not change A Techstream display changes B Result: 2 B REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY). Refer to «DISASSEMBLY [08/2013 - ]»(ref-635644-S32989936552014070300000) Result: 1 A See step 3
CHECK HARNESS AND CONNECTOR (POWER SOURCE) See step 1 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE Result: 1 OK See step 4
CHECK HARNESS AND CONNECTOR (GROUND) See step 2 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 5
INSPECT STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) Reconnect the E57 certification ECU (smart key ECU assembly) connector. Measure the resistance according to the value(s) in the table below. *a Component with harness connected (Steering Lock ECU (Steering Lock Actuator Assembly)) Standard Resistance Tester Connection Condition Specified Condition E61-4 (SLP1) - Body ground Positive (+) tester probe --> E61-4 (SLP1) Negative (-) tester probe --> Body ground Steering locked --> unlocked* 10 kohms or higher --> Below 1 ohms HINT: *: If any of the doors are opened then closed with the shift lever in P (except manual transaxle) and the engine switch off, the steering will be locked. If the engine switch is then turned on (ACC) or on (IG), the steering will be unlocked. DTC B2285 may be stored due to a malfunction in the steering lock ECU (steering lock actuator assembly). The steering lock position signal and unlock position signal are sent from the steering lock ECU (steering lock actuator assembly) to the certification ECU (smart key ECU assembly) individually. Result Proceed to OK NG Result: 2 NG REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY). Refer to «DISASSEMBLY [08/2013 - ]»(ref-635644-S32989936552014070300000) Result: 1 OK See step 6
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) Disconnect the E59 certification ECU (smart key ECU assembly) connector. Disconnect the E61 steering lock ECU (steering lock actuator assembly) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E59-26 (SLP) - E61-4 (SLP1) Always Below 1 ohms E59-26 (SLP) or E61-4 (SLP1) - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR

HINT

When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

CHECK FOR DTC Note any DTCs that are output. Refer to «DTC CHECK / CLEAR [08/2013 - ]»(ref-635437-S33017851162014070300000) Result Proceed to NEXT Result: 1 NEXT GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]»(ref-635647-S27781195552014070300000)

HINT

When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

Scheme 226

Scheme 226: PROCEDURE

Scheme 227

Scheme 228

CHECK HARNESS AND CONNECTOR (POWER SOURCE) Disconnect the E57 certification ECU (smart key ECU assembly) connector. *a Rear view of wire harness connector (to Certification ECU (Smart Key ECU Assembly)) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E57-2 (+B) - Body ground Always 11 to 14 V Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE Result: 1 OK See step 2
CHECK HARNESS AND CONNECTOR (GROUND) Measure the resistance according to the value(s) in the table below. *a Rear view of wire harness connector (to Certification ECU (Smart Key ECU Assembly)) Standard Resistance Tester Connection Condition Specified Condition E57-11 (E) - Body ground Always Below 1 ohms Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 3
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Reconnect the E57 certification ECU (smart key ECU assembly) connector. Measure the voltage according to the value(s) in the table below. *a Component with harness connected (Certification ECU (Smart Key ECU Assembly)) - - Standard Voltage Tester Connection Condition Specified Condition E57-9 (IG2D) - Body ground Engine switch on (ACC) --> Engine switch on (IG) 1 V or less --> 9 V or higher E59-6 (IG1D) - Body ground Engine switch on (ACC) --> Engine switch on (IG) 1 V or less --> 9 V or higher Result Proceed to OK NG Result: 1 OK USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - 04/2014]»(ref-635429-S08037721622014070300000) & «HOW TO PROCEED WITH TROUBLESHOOTING [04/2014 - ]»(ref-635429-S26261876542014070300000) Result: 2 NG REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000)

HINT

When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

READ VALUE USING TECHSTREAM (ENGINE CONDITION, ENGINE SPEED) 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 or Starting Control / Data List. Read the Data List according to the display on the Techstream. Body Electrical > Power Source Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Engine Condition Engine state Stop or Run Stop: Engine stopped Run: Engine running - Body Electrical > Power Source Control > Data List Tester Display Engine Condition Body Electrical > Starting Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Engine Speed Engine speed 0 to 16383 RPM Fluctuates in accordance with engine speed - Body Electrical > Starting Control > Data List Tester Display Engine Speed OK The Techstream display changes correctly in response to the engine condition. Result Proceed to OK NG Result: 1 OK GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) for 2ZR-FE: Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]»(ref-635447-S15395893242014070300000) for 2ZR-FAE: Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]»(ref-635448-S20436684222014070300000) Result: 2 NG See step 2
CHECK HARNESS AND CONNECTOR (POWER SOURCE) See step 1 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE Result: 1 OK See step 3
CHECK HARNESS AND CONNECTOR (GROUND) See step 2 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 4
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ECM) Disconnect the A40 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E57-16 (NE) - A40-30 (NEO) Always Below 1 ohms E57-16 (NE) or A40-30 (NEO) - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 5
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Reconnect the A40 ECM connector. Reconnect the E57 certification ECU (smart key ECU assembly) connector. *a Component with harness connected (Certification ECU (Smart Key ECU Assembly)) Using an oscilloscope, check the engine speed input signal waveform at the terminal of the certification ECU (smart key ECU assembly). Standard Frequency Tester Connection Condition Specified Condition E57-16 (NE) - Body ground Engine stopped No pulse generated Engine running Pulse generated Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 2 NG GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) for 2ZR-FE: Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]»(ref-635447-S15395893242014070300000) for 2ZR-FAE: Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]»(ref-635448-S20436684222014070300000)

HINT

When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

Scheme 229

Scheme 229: PROCEDURE

Scheme 230

CHECK HARNESS AND CONNECTOR (POWER SOURCE) See step 1 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE Result: 1 OK See step 2
CHECK HARNESS AND CONNECTOR (GROUND) See step 2 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 3
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Disconnect the E59 certification ECU (smart key ECU assembly) connector. Disconnect the 3D driver side junction block assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E59-4 (ACCD) - 3D-27 Always Below 1 ohms 3C-9 - Body ground Always Below 1 ohms E59-4 (ACCD) or 3D-27 - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 4
INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY (ACC RELAY) Remove the driver side junction block assembly. Refer to «REMOVAL [08/2013 - ]»(ref-635627-S03921509152014070300000) Measure the resistance according to the value(s) in the table below. *a Component without harness connected (Driver Side Junction Block Assembly) - - Standard Resistance Tester Connection Condition Specified Condition 3B-1 - 3A-45 Battery voltage not applied to terminals 3D-27 and 3C-9 10 kohms or higher Battery voltage applied to terminals 3D-27 and 3C-9 Below 1 ohms Result Proceed to OK NG Result: 2 NG REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL [08/2013 - ]»(ref-635627-S03921509152014070300000) Result: 1 OK See step 5
INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Install the driver side junction block assembly. Refer to «INSTALLATION [08/2013 - ]»(ref-635627-S07826103242014070300000) Reconnect the E57 and E59 certification ECU (smart key ECU assembly) connectors. *a Component with harness connected (Certification ECU (Smart Key ECU Assembly)) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E59-4 (ACCD) - Body ground Engine switch off --> Engine switch on (ACC) 1 V or less --> 8.5 V or higher Result Proceed to OK NG Result: 1 OK USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - 04/2014]»(ref-635429-S08037721622014070300000) Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [04/2014 - ]»(ref-635429-S26261876542014070300000) Result: 2 NG REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000)

HINT

Before proceeding with troubleshooting, check if there are any signs of water damage to the certification ECU (smart key ECU assembly). If there are any signs of water damage, replace the certification ECU (smart key ECU assembly) and take measures against the cause of the water damage.
When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

CHECK FOR DTC Clear the DTCs. Body Electrical > Power Source Control > Clear DTCs Turn the engine switch on (IG). After 330 seconds have elapsed, check if the DTC has been output again. HINT: If there are any signs that water was present, before replacing the certification ECU (smart key ECU assembly), take measures to prevent any further water entry. OK DTC B2277 is not output Result Proceed to OK NG Result: 1 OK USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - 04/2014]»(ref-635429-S08037721622014070300000) Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [04/2014 - ]»(ref-635429-S26261876542014070300000) Result: 2 NG REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000)

Note. When using the Techstream with the engine switch off, connect the Techstream to the DLC3 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. The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] If the smart key system is disabled through the customize function, enable the system before performing troubleshooting. Refer to CUSTOMIZE PARAMETERS [08/2013 - ] Before replacing the certification ECU (smart key ECU assembly), ID code box (immobilizer code ECU) or steering lock ECU (steering lock actuator assembly), refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [08/2013 - ] Inspect the fuses of circuits related to this system before performing the following procedure. If the steering lock ECU (steering lock actuator assembly) is replaced, be sure to confirm that the steering is unlocked by turning the steering to the left and right before starting the engine. If the steering is locked for any reason, open and close a door with the engine switch off, and then unlock the steering by pressing the engine switch. This prevents the engine from starting while the steering is locked. After completing repairs, confirm that the problem does not occur.

HINT

When the certification ECU (smart key ECU assembly) is replaced with a new one and the cable is connected to the negative (-) battery terminal, the power source mode changes to on (IG).
When the battery cable is disconnected and reconnected, the power source returns to the mode it was in before the battery cable was disconnected.

Scheme 231

Scheme 231: PROCEDURE

CHECK BATTERY Measure the battery voltage. Standard Voltage 11 to 14 V HINT: It may be possible to tell whether the vehicle battery is discharged by operating the horn. If the battery voltage is less than 11 V, recharge or replace it. Result Proceed to NEXT Result: 1 NEXT See step 2
CHECK FOR DTC Using the Techstream, confirm the output of DTCs for all systems. NOTE: Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart. OK No DTCs are output. Result Proceed to OK NG Result: 2 NG GO TO DTC CHART «DIAGNOSTIC TROUBLE CODE CHART [08/2013 - ]»(ref-635437-S19423678982014070300000) Result: 1 OK See step 3
CHECK WAVE ENVIRONMENT If the problem occurs in certain locations or times of day, the possibility of wave interference is high. HINT: Whether or not the problem is due to wave interference can be checked by holding the electrical key transmitter sub-assembly near the door control receiver (RF band). OK Engine starts. Result Proceed to OK NG Result: 1 OK AFFECTED BY WAVE INTERFERENCE Result: 2 NG See step 4
CHECK ENGINE SWITCH CONDITION Get into the vehicle while carrying an electrical key transmitter sub-assembly. Move the shift lever to P.*1 With the brake pedal released, check that pressing the engine switch causes the power source mode to change.*1 With the clutch pedal released, check that pressing the engine switch causes the power source mode to change.*2 *1: except Manual Transaxle *2: for Manual Transaxle Result Result Proceed to Power source mode changes : Off --> on (ACC) --> on (IG) --> off A Power source mode does not change to on (ACC) or on (IG) B Power source mode changes to on (IG) but not to on (ACC) C Power source mode changes to on (ACC) but not to on (IG) D Result: 2 B GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (IG AND ACC). Refer to «Power Source Mode does not Change to ON (IG and ACC) [08/2013 - ]»(ref-635700-S25557757202014070300000) Result: 3 C GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (IG). Refer to «Power Source Mode does not Change to ON (IG) [08/2013 - ]»(ref-635700-S41297893372014070300000) Result: 4 D GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (ACC). Refer to «Power Source Mode does not Change to ON (ACC) [08/2013 - ]»(ref-635700-S30234104442014070300000) Result: 1 A See step 5
CHECK CRANKING FUNCTION Get into the vehicle while carrying an electrical key transmitter sub-assembly. Move the shift lever to P.*1 Depress the brake pedal.*1 Depress the clutch pedal.*2 w/ Multi-information Display (Segment LCD Type): Confirm that the smart key warning light is illuminated in green, and then press the engine switch and check that the engine cranks. w/ Multi-information Display (Dot LCD Type): Confirm that the key warning light is displayed, and then press the engine switch and check that the engine cranks. *1: except Manual Transaxle *2: for Manual Transaxle OK Engine cranks. Result Proceed to OK NG Result: 1 OK GO TO SFI SYSTEM (PROBLEM SYMPTOMS TABLE) for 2ZR-FE: Refer to «PROBLEM SYMPTOMS TABLE [08/2013 - ]»(ref-635447-S11538227832014070300000) for 2ZR-FAE: Refer to «PROBLEM SYMPTOMS TABLE [08/2013 - ]»(ref-635448-S29115824932014070300000) Result: 2 NG See step 6
CHECK SECURITY INDICATOR LIGHT (IMMOBILIZER SYSTEM UNSET) Get into the vehicle while carrying an electrical key transmitter sub-assembly. Move the shift lever to P.* *: except Manual Transaxle Press the engine switch with the brake pedal released and check that the security indicator light changes from blinking to off at the same time that the power source mode changes to on (ACC). HINT: It is determined that the immobilizer function is operating correctly if the security indicator light changes from blinking to off at the same time that the power source mode changes to on (ACC). OK Security indicator light changes from blinking to off at the same time that the power source mode changes to on (ACC). Result Proceed to OK NG Result: 2 NG See step 22 Result: 1 OK See step 7
CHECK COMBINATION METER ASSEMBLY Get into the vehicle while carrying the electrical key transmitter sub-assembly, move the shift lever to P*1, depress the brake pedal*1 or clutch pedal*2 and check that the combination meter indicator changes. HINT: If the key warning light illuminates in green (w/ Multi-information Display (Segment LCD Type)) or key warning light is displayed (w/ Multi-information Display (Dot LCD Type)) when the procedure above is performed, the P, N position detection signal*1 and stop light switch signal*1 or clutch start switch signal*2 can be considered to be normal. *1: except Manual Transaxle *2: for Manual Transaxle OK The key warning light illuminates in green (w/ Multi-information Display (Segment LCD Type)). The key warning light is displayed (w/ Multi-information Display (Dot LCD Type)). Result Result Proceed to OK A NG (except Manual Transaxle) B NG (for Manual Transaxle) C Result: 2 B See step 13 Result: 3 C See step 19 Result: 1 A See step 8
READ VALUE USING TECHSTREAM (STARTER SW) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Starting Control / Data List. Get into the vehicle while carrying the electrical key transmitter sub-assembly, move the shift lever to P*1, press the engine switch while depressing the brake pedal*1 or clutch pedal*2 and confirm that the Data List item changes. *1: except Manual Transaxle *2: for Manual Transaxle Body Electrical > Starting Control > Data List 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. Body Electrical > Starting Control > Data List Tester Display Starter SW OK The Techstream display changes correctly in response to the vehicle condition. Result Proceed to OK NG Result: 2 NG REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 1 OK See step 9
INSPECT ST NO. 1 RELAY Refer to «ON-VEHICLE INSPECTION [08/2013 - ]»(ref-635612-S36797547652014070300000) Result Proceed to OK NG Result: 2 NG REPLACE ST NO. 1 RELAY Result: 1 OK See step 10
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - BODY GROUND) Install the ST NO. 1 relay to the engine room relay block and junction block assembly. Disconnect the E57 certification ECU (smart key ECU assembly) connector. *a Rear view of wire harness connector (to Certification ECU (Smart Key ECU Assembly)) Move the shift lever to P or N. (except Manual Transaxle) Depress the clutch pedal. (for Manual Transaxle) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E57-5 (STAR) - Body ground 20°C (68°F) 98 to 146 ohms E57-7 (STA) - Body ground Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 11
INSPECT STARTER ASSEMBLY Remove the starter assembly. for 2ZR-FE: Refer to «REMOVAL [08/2013 - ]»(ref-635626-S35664591432014070300000) for 2ZR-FAE: Refer to «REMOVAL [08/2013 - ]»(ref-635612-S20528148982014070300000) Inspect the starter assembly. for 2ZR-FE: Refer to «INSPECTION [08/2013 - ]»(ref-635626-S06424950232014070300000) for 2ZR-FAE: Refer to «INSPECTION [08/2013 - ]»(ref-635612-S05490340612014070300000) Result Proceed to OK NG Result: 2 NG REPLACE STARTER ASSEMBLY for 2ZR-FE: Refer to «REMOVAL [08/2013 - ]»(ref-635626-S35664591432014070300000) for 2ZR-FAE: Refer to «REMOVAL [08/2013 - ]»(ref-635612-S20528148982014070300000) Result: 1 OK See step 12
CHECK HARNESS AND CONNECTOR (BATTERY - STARTER ASSEMBLY AND ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY) Remove the ST NO. 1 relay from the engine room relay block and junction block assembly. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition B5-1 - Body ground Always 11 to 14 V ST NO. 1 relay terminal 5 - Body ground Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition ST NO. 1 relay terminal 3 - B9-1 Always Below 1 ohms ST NO. 1 relay terminal 3 or B9-1 - Body ground 10 kohms or higher Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR
READ VALUE USING TECHSTREAM (NEUTRAL SW/ CLUTCH SW, SHIFT POSITION P OR N) 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 or Starting Control / Data List. Read the Data List according to the display on the Techstream. Body Electrical > Power Source Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note 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 assembly is malfunctioning. When the engine cannot be started due to a park/neutral position switch assembly malfunction, OFF is displayed. Body Electrical > Power Source Control > Data List Tester Display Neutral SW/ Clutch SW Body Electrical > Starting Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Shift Position P or N Park/neutral position switch status ON or OFF ON: Shift lever in P or N OFF: Shift lever not in P or N When malfunctioning, the engine will not crank. Body Electrical > Starting Control > Data List Tester Display Shift Position P or N OK The Techstream display changes correctly in response to the shift position. Result Proceed to OK NG Result: 2 NG See step 17 Result: 1 OK See step 14
READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH1) Read the Data List according to the display on the Techstream. Body Electrical > Power Source Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Stop Light Switch 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. Body Electrical > Power Source Control > Data List Tester Display Stop Light Switch OK The Techstream display changes correctly in response to the brake operation. Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 2 NG See step 15
INSPECT STOP LIGHT SWITCH ASSEMBLY Remove the stop light switch assembly. Refer to «REMOVAL [08/2013 - ]»(ref-635610-S39537211682014070300000) Inspect the stop light switch assembly. Refer to «INSPECTION [08/2013 - ]»(ref-635610-S22400919852014070300000) Result Proceed to OK NG Result: 2 NG REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL [08/2013 - ]»(ref-635610-S39537211682014070300000) Result: 1 OK See step 16
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STOP LIGHT SWITCH ASSEMBLY) See step 5 Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR
INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Remove the park/neutral position switch assembly. for K311: Refer to «REMOVAL [08/2013 - ]»(ref-635611-S11763732652014070300000) for U341E: Refer to «REMOVAL [08/2013 - ]»(ref-635580-S15906323772014070300000) Inspect the park/neutral position switch assembly. for K311: Refer to «INSPECTION [08/2013 - ]»(ref-635611-S38216118852014070300000) for U341E: Refer to «INSPECTION [08/2013 - ]»(ref-635580-S05630827522014070300000) Result Proceed to OK NG Result: 2 NG REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY K311: Refer to «REMOVAL [08/2013 - ]»(ref-635611-S11763732652014070300000) U341E: Refer to «REMOVAL [08/2013 - ]»(ref-635580-S15906323772014070300000) Result: 1 OK See step 18
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - PARK/NEUTRAL POSITION SWITCH ASSEMBLY) Disconnect the E57 certification ECU (smart key ECU assembly) connector. Disconnect the B14 park/neutral position switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E57-5 (STAR) - B14-4 (B) Always Below 1 ohms E57-5 (STAR) or B14-4 (B) - Body ground Always 10 kohms or higher Reconnect the B14 park/neutral position switch assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E57-5 (STAR) - Body ground Engine switch pressed and held with brake pedal depressed (starter on) --> Engine switch released after approximately 1 second elapses (starter off) 9.5 V or higher* --> 1 V or less *a Rear view of wire harness connector (to Certification ECU (Smart Key ECU Assembly) HINT: *: When the engine is cranking, the battery voltage may momentarily drop to approximately 6 V. Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR
READ VALUE USING TECHSTREAM (NEUTRAL SW/ CLUTCH SW) 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 / Data List. Read the Data List according to the display on the Techstream. Body Electrical > Power Source Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Neutral SW/ Clutch SW State of clutch pedal ON or OFF ON: Clutch pedal depressed OFF: Clutch pedal released Use this item to help determine if the clutch start switch assembly is malfunctioning. The engine cannot be started when this item is "OFF". Body Electrical > Power Source Control > Data List Tester Display Neutral SW/ Clutch SW OK The Techstream display changes correctly in response to the clutch pedal operation. Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 2 NG See step 20
INSPECT CLUTCH START SWITCH ASSEMBLY Remove the clutch start switch assembly. Refer to «REMOVAL [08/2013 - ]»(ref-635577-S31819980482014070300000) Inspect the clutch start switch assembly. Refer to «INSPECTION [08/2013 - ]»(ref-635577-S25521345042014070300000) Result Proceed to OK NG Result: 2 NG REPLACE CLUTCH START SWITCH ASSEMBLY. Refer to «REMOVAL [08/2013 - ]»(ref-635577-S31819980482014070300000) Result: 1 OK See step 21
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - CLUTCH START SWITCH ASSEMBLY) Disconnect the E57 certification ECU (smart key ECU assembly) connector. Disconnect the A4 clutch start switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E57-5 (STAR) - A4-2 Always Below 1 ohms E57-5 (STAR) or A4-2 - Body ground Always 10 kohms or higher Reconnect the A4 clutch start switch assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E57-5 (STAR) - Body ground Engine switch pressed and held with clutch pedal depressed (starter on) --> Engine switch released after approximately 1 second elapses (starter off) 9.5 V or higher* --> 1 V or less *a Rear view of wire harness connector (to Certification ECU (Smart Key ECU Assembly)) HINT: *: When the engine is cranking, the battery voltage may momentarily drop to approximately 6 V. Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR
READ VALUE USING TECHSTREAM (S CODE CHECK) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Data List. Read the Data List according to the display on the Techstream. Body Electrical > Smart Key > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note 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). Body Electrical > Smart Key > Data List Tester Display S Code Check HINT: Reasons for verification failure: The certification ECU (smart key ECU assembly) or ID code box (immobilizer code ECU) is malfunctioning. There is a problem with the communication between ECUs. An ECU has been replaced, but is not registered. An ECU has been replaced with an ECU which has a code already stored in it. OK OK (S code verification result normal) appears on the screen. Result Proceed to OK NG Result: 2 NG See step 28 Result: 1 OK See step 23
CHECK STEERING LOCK Check that the steering unlocks when the engine switch is turned on (ACC). OK The steering unlocks. Result Proceed to OK NG Result: 2 NG See step 26 Result: 1 OK See step 24
READ VALUE USING TECHSTREAM (IMMOBILIZER) Read the Data List according to the display on the Techstream. Body Electrical > Smart Key > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Immobilizer Immobilizer system 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 steering lock/unlock. Body Electrical > Smart Key > Data List Tester Display Immobilizer OK The Techstream display changes correctly in response to the immobilizer condition. Result Proceed to OK NG Result: 3 NG REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 1 OK See step 25
READ VALUE USING TECHSTREAM (STARTER REQUEST SIGNAL) Enter the following menus: Body Electrical / Power Source Control / Data List. Read the Data List according to the display on the Techstream. Body Electrical > Power Source Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Starter Request Signal Engine start request signal status ON or OFF except Manual Transaxle: ON: With the shift lever in P and brake pedal depressed, the engine switch is pressed and held OFF: After approx. 1 sec. has elapsed, the engine switch is released for Manual Transaxle: ON: With the clutch pedal depressed, the engine switch is pressed and held OFF: After approx. 1 sec. 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 amount of time. Body Electrical > Power Source Control > Data List Tester Display Starter Request Signal NOTE: w/ Multi-information Display (Segment LCD Type): Check that the key warning light on the combination meter assembly illuminates in green, and then press the engine switch. w/ Multi-information Display (Dot LCD Type): Check that the key warning light is displayed on the multi-information display in the combination meter assembly, and then press the engine switch. Check that the key warning light is displayed on the multi-information display in the combination meter assembly, and then press the engine switch. OK The Techstream display changes correctly in response to the operation of the engine switch. Result Proceed to OK NG Result: 1 OK USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - 04/2014]»(ref-635429-S08037721622014070300000) Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [04/2014 - ]»(ref-635429-S26261876542014070300000) Result: 2 NG See step 30
READ VALUE USING TECHSTREAM (STEERING UNLOCK SWITCH) Enter the following menus: Body Electrical / Power Source Control / Data List. Read the Data List according to the display on the Techstream. Body Electrical > Power Source Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note 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 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. Body Electrical > Power Source Control > Data List Tester Display Steering Unlock Switch *: except Manual Transaxle OK The Techstream display changes correctly in response to the steering condition. Result Proceed to OK NG Result: 1 OK GO TO STEERING LOCK SYSTEM (UNABLE TO UNLOCK STEERING WHEEL). Refer to «Unable to Lock Steering Wheel [08/2013 - ]»(ref-635672-S09697314472014070300000) Result: 2 NG See step 27
READ VALUE USING TECHSTREAM (L CODE CHECK) Enter the following menus: Body Electrical / Smart Key / Data List. Read the Data List according to the display on the Techstream. Body Electrical > Smart Key > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note 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 ID code box (immobilizer code ECU) 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). Body Electrical > Smart Key > Data List Tester Display L Code Check HINT: Reasons for verification failure: The steering lock ECU (steering lock actuator assembly) or ID code box (immobilizer code ECU) is malfunctioning. There is a problem with the communication between ECUs. An ECU has been replaced, but is not registered. An ECU has been replaced with an ECU which has a code already stored in it. OK OK (L code verification result normal) appears on the screen. Result Proceed to OK NG Result: 1 OK REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY). Refer to «DISASSEMBLY [08/2013 - ]»(ref-635644-S32989936552014070300000) Result: 2 NG See step 29
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Replace the certification ECU (smart key ECU assembly) with a new one. Perform the registration procedures. HINT: Refer to registration. Refer to «REGISTRATION [08/2013 - ]»(ref-635449-S41259747962014070300000) Use the Data List to check if S code certification is functioning properly again. Body Electrical > Smart Key > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note 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). Body Electrical > Smart Key > Data List Tester Display S Code Check OK OK (S code certification result normal) appears on the screen. Result Proceed to OK NG Result: 1 OK END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Result: 2 NG See step 30
REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) Replace the steering lock ECU (steering lock actuator assembly) with a new one. Refer to «DISASSEMBLY [08/2013 - ]»(ref-635644-S32989936552014070300000) Perform the registration procedures. HINT: Refer to registration. Refer to «REGISTRATION [08/2013 - ]»(ref-635449-S41259747962014070300000) Use the Data List to check if L code verification is functioning properly again Body Electrical > Smart Key > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note 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 ID code box (immobilizer code ECU) 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). Body Electrical > Smart Key > Data List Tester Display L Code Check OK OK (L code verification result normal) appears on the screen. Result Proceed to OK NG Result: 1 OK END (STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) WAS DEFECTIVE) Result: 2 NG REPLACE ID CODE BOX (IMMOBILIZER CODE ECU). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S03438666092014070300000)
REPLACE ID CODE BOX (IMMOBILIZER CODE ECU) Replace the ID code box (immobilizer code ECU) with a new one. Refer to «REMOVAL [08/2013 - ]»(ref-635673-S03438666092014070300000) Perform the registration procedures. HINT: Refer to registration. Refer to «REGISTRATION [08/2013 - ]»(ref-635449-S41259747962014070300000) Use the Data List to check if S code verification is functioning properly again. Body Electrical > Smart Key > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note 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). Body Electrical > Smart Key > Data List Tester Display S Code Check OK OK (S code verification result normal) appears on the screen. Result Proceed to NEXT Result: 1 NEXT END (ID CODE BOX (IMMOBILIZER CODE ECU) WAS DEFECTIVE)

Note. When using the Techstream with the engine switch off, connect the Techstream to the DLC3 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. The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart. Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2013 - ] If the smart key system is disabled through the customize function, enable the system before performing troubleshooting. Refer to CUSTOMIZE PARAMETERS [08/2013 - ] Before replacing the certification ECU (smart key ECU assembly) electrical key transmitter sub-assembly, refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [08/2013 - ] Inspect the fuses of circuits related to this system before performing the following procedure. After completing repairs, confirm that the problem does not occur.

HINT

When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

Scheme 232

Scheme 232: PROCEDURE

CHECK WIRELESS DOOR LOCK CONTROL SYSTEM Check the wireless door lock function by operating the electrical key transmitter sub-assembly. OK Wireless door lock function operates. Result Proceed to OK NG Result: 2 NG GO TO DIAGNOSTIC PROCEDURE (All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate). Refer to «All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate [08/2013 - ]»(ref-635690-S04128987302014070300000) Result: 1 OK See step 2
CHECK HARNESS AND CONNECTOR (POWER SOURCE) See step 1 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE Result: 1 OK See step 3
CHECK HARNESS AND CONNECTOR (GROUND) See step 2 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 4
CHECK SMART KEY SYSTEM Remove the battery from the electrical key transmitter sub-assembly. With the brake pedal*1 or clutch pedal*2 depressed, hold the electrical key transmitter sub-assembly near the engine switch and check if the power source mode changes. *1: except Manual Transaxle *2: for Manual Transaxle *1 Engine Switch *2 Electrical Key Transmitter Sub-assembly HINT: If the power source mode changes, the cabin verification is malfunctioning. OK The power source mode changes. Result Proceed to OK NG Result: 2 NG See step 8 Result: 1 OK See step 5
READ VALUE USING TECHSTREAM (START SWITCH1, START SWITCH2) Read the Data List according to the display on the Techstream. Body Electrical > Power Source Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Start Switch 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. Body Electrical > Power Source Control > Data List Tester Display Start Switch Start Switch2 OK The Techstream display changes correctly in response to the operation of the engine switch. Result Proceed to OK NG Result: 1 OK GO TO DIAGNOSTIC PROCEDURE (Room Oscillator does not Recognize Key). Refer to «Room Oscillator does not Recognize Key [08/2013 - ]»(ref-635690-S21239279322014070300000) Result: 2 NG See step 6
INSPECT ENGINE SWITCH Remove the engine switch. for 2ZR-FE: Refer to «REMOVAL [08/2013 - ]»(ref-635626-S08969552542014070300000) for 2ZR-FAE: Refer to «REMOVAL [08/2013 - ]»(ref-635612-S14439298562014070300000) Inspect the engine switch. for 2ZR-FE: Refer to «INSPECTION [08/2013 - ]»(ref-635626-S03426249692014070300000) for 2ZR-FAE: Refer to «INSPECTION [08/2013 - ]»(ref-635612-S13406095052014070300000) Result Proceed to OK NG Result: 2 NG REPLACE ENGINE SWITCH for 2ZR-FE: Refer to «REMOVAL [08/2013 - ]»(ref-635626-S08969552542014070300000) for 2ZR-FAE: Refer to «REMOVAL [08/2013 - ]»(ref-635612-S14439298562014070300000) Result: 1 OK See step 7
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ENGINE SWITCH) Disconnect the E59 certification ECU (smart key ECU assembly) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E59-28 (SSW1) - E60-5 (SS1) Always Below 1 ohms E59-30 (SSW2) - E60-1 (SS2) Always Below 1 ohms E59-28 (SSW1) or E60-5 (SS1) - Body ground Always 10 kohms or higher E59-30 (SSW2) or E60-1 (SS2) - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR
READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH1) 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 / Data List. Read the Data List according to the display on the Techstream. except Manual Transaxle: Body Electrical > Power Source Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Stop Light Switch 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. Body Electrical > Power Source Control > Data List Tester Display Stop Light Switch for Manual Transaxle: Body Electrical > Power Source Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Neutral SW/ Clutch SW State of clutch pedal ON or OFF ON: Clutch pedal depressed OFF: Clutch pedal released Use this item to help determine if the clutch start switch assembly is malfunctioning. The engine cannot be started when this item is OFF. Body Electrical > Power Source Control > Data List Tester Display Neutral SW/ Clutch SW OK ON (brake pedal is depressed) and OFF (brake pedal is released) appear on the screen. (except Manual Transaxle) ON (clutch pedal is depressed) and OFF (clutch pedal is released) appear on the screen. (for Manual Transaxle) Result Result Proceed to OK A NG (except Manual Transaxle) B NG (for Manual Transaxle) C Result: 2 B See step 12 Result: 3 C See step 14 Result: 1 A See step 9
READ VALUE USING TECHSTREAM (POWER SUPPLY CONDITION) 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 / Data List. Read the Data List according to the display on the Techstream. Body Electrical > Power Source Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Power Supply Condition Power supply state All OFF, ACC ON, IG ON, IG2 ON or ST ON ALL OFF: Engine switch off (ACC and IG) ACC ON: Engine switch on (ACC) IG 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 IG and IG2 relays turn on at approximately the same time, IG ON may not be displayed (the IG relay turns on for a very short time). Body Electrical > Power Source Control > Data List Tester Display Power Supply Condition With the engine switch off and brake pedal depressed, hold the electrical key transmitter sub-assembly near the engine switch for 2 seconds or more and read the Data List. HINT: If the smart key function has been canceled on the customization menu, ACC ON is displayed in the Data List. OK IG2 ON is displayed in the Data List. Result Proceed to OK NG Result: 2 NG See step 11 Result: 1 OK See step 10
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Read the Data List according to the display on the Techstream. Body Electrical > Power Source Control > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Power Supply Condition Power supply state All OFF, ACC ON, IG ON, IG2 ON or ST ON All OFF: Engine switch off (ACC and IG) ACC ON: Engine switch on (ACC) IG 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 IG and IG2 relays turn on at approximately the same time, IG ON may not be displayed (the IG relay turns on for a very short time). Body Electrical > Power Source Control > Data List Tester Display Power Supply Condition Measure the voltage while checking the Data List on the Techstream. *a Component with harness connected (Certification ECU (Smart Key ECU Assembly)) - - Standard Voltage Tester Connection Condition Specified Condition E59-6 (IG1D) - Body ground Engine switch off 1 V or less Engine switch on (ACC) 1 V or less Engine switch on (IG) 9 V or higher E57-9 (IG2D) - Body ground Engine switch off 1 V or less Engine switch on (ACC) 1 V or less Engine switch on (IG) 9 V or higher E59-4 (ACCD) - Body ground Engine switch off 1 V or less Engine switch on (IG) 8.5 V or higher Engine switch on (ACC) 8.5 V or higher Result Proceed to OK NG Result: 1 OK CHECK RELAY CONTACT SIDE CIRCUIT. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - 04/2014]»(ref-635429-S08037721622014070300000) Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [04/2014 - ]»(ref-635429-S26261876542014070300000) Result: 2 NG REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000)
CHECK FOR DTC Check for DTCs. Body Electrical > Smart Key > Trouble Codes Result Result Proceed to The following DTCs are not output: B2784 B278A A DTC B2784 is output. B DTC B278A is output. C Result: 1 A REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY Result: 2 B GO TO DIAGNOSTIC PROCEDURE (DTC B2784). Refer to «DTC B2784: Antenna Coil Open / Short [08/2013 - ]»(ref-635701-S18927385732014070300000) Result: 3 C GO TO DIAGNOSTIC PROCEDURE (DTC B278A). Refer to «DTC B278A: Short to GND in Immobilizer System Power Source Circuit [08/2013 - ]»(ref-635701-S31627807452014070300000)
INSPECT STOP LIGHT SWITCH ASSEMBLY Refer to «INSPECTION [08/2013 - ]»(ref-635610-S22400919852014070300000) Result Proceed to OK NG Result: 2 NG REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL [08/2013 - ]»(ref-635610-S39537211682014070300000) Result: 1 OK See step 13
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STOP LIGHT SWITCH ASSEMBLY) See step 5 Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR
INSPECT ST NO. 1 RELAY Refer to «ON-VEHICLE INSPECTION [08/2013 - ]»(ref-635612-S36797547652014070300000) Result Proceed to OK NG Result: 2 NG REPLACE ST NO. 1 RELAY Result: 1 OK See step 15
INSPECT CLUTCH START SWITCH ASSEMBLY Refer to «INSPECTION [08/2013 - ]»(ref-635577-S25521345042014070300000) Result Proceed to OK NG Result: 2 NG REPLACE CLUTCH START SWITCH ASSEMBLY. Refer to «REMOVAL [08/2013 - ]»(ref-635577-S31819980482014070300000) Result: 1 OK See step 16
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - CLUTCH START SWITCH ASSEMBLY) Disconnect the E57 certification ECU (smart key ECU assembly) connector. Disconnect the A4 clutch start switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E57-5 (STAR) - A4-2 Always Below 1 ohms E57-5 (STAR) or A4-2 - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 17
CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH ASSEMBLY - ST NO. 1 RELAY) Disconnect the A4 clutch start switch assembly connector. Remove the ST NO. 1 relay from the engine room relay block and junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A4-1 - ST NO. 1 relay terminal 2 Always Below 1 ohms ST NO. 1 relay terminal 1 - Body ground Always Below 1 ohms A4-1 or ST NO. 1 relay terminal 2 - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR

Note. When using the Techstream with the engine switch off, connect the Techstream to the DLC3 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. The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart. Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2013 - ] If the smart key system is disabled through the customize function, enable the system before performing troubleshooting. Refer to CUSTOMIZE PARAMETERS [08/2013 - ] Before replacing the certification ECU (smart key ECU assembly), refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [08/2013 - ] Inspect the fuses of circuits related to this system before performing the following procedure. After completing repairs, confirm that the problem does not occur.

HINT

When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY) Disconnect the E57 certification ECU (smart key ECU assembly) connector. Remove the IG2 relay from the engine room relay block and junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E57-9 (IG2D) - IG2 relay terminal 2 Always Below 1 ohms IG2 relay terminal 1 - Body ground Always Below 1 ohms E57-9 (IG2D) or IG2 relay terminal 2 - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 2
INSPECT IG2 RELAY Refer to «ON-VEHICLE INSPECTION [08/2013 - ]»(ref-635602-S10423509202014070300000) Result Proceed to OK NG Result: 2 NG REPLACE IG2 RELAY Result: 1 OK See step 3
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Disconnect the E59 certification ECU (smart key ECU assembly) connector. Disconnect the 3D and 3C driver side junction block assembly connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E59-6 (IG1D) - 3D-25 Always Below 1 ohms 3C-9 - Body ground Always Below 1 ohms E59-6 (IG1D) or 3D-25 - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 4
INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY (IG1 NO. 1, IG NO. 2 AND IG NO. 3 RELAY) Remove the driver side junction block assembly. Refer to «REMOVAL [08/2013 - ]»(ref-635627-S03921509152014070300000) Measure the resistance according to the value(s) in the table below. *a Component without harness connected (Driver Side Junction Block Assembly) - - Standard Resistance Tester Connection Condition Specified Condition 3B-1 - 3A-15 (IG1 NO. 1 relay) 3B-1 - 3A-1 (IG1 NO. 2 relay) 3B-1 - 3C-1 (IG1 NO. 3 relay) Battery voltage not applied to terminals 3D-25 and 3C-9 10 kohms or higher Battery voltage applied to terminals 3D-25 and 3C-9 Below 1 ohms Result Proceed to OK NG Result: 3 NG REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL [08/2013 - ]»(ref-635627-S03921509152014070300000) Result: 1 OK See step 5
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Install the driver side junction block assembly. Refer to «INSTALLATION [08/2013 - ]»(ref-635627-S07826103242014070300000) Measure the voltage according to the value(s) in the table below. *a Component with harness connected (Certification ECU (Smart Key ECU Assembly)) - - Standard Voltage Tester Connection Condition Specified Condition E57-9 (IG2D) - Body ground Engine switch on (ACC) --> Engine switch on (IG) 1 V or less --> 9 V or higher E59-6 (IG1D) - Body ground Engine switch on (ACC) --> Engine switch on (IG) 1 V or less --> 9 V or higher Result Proceed to OK NG Result: 1 OK CHECK RELAY CONTACT SIDE CIRCUIT. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - 04/2014]»(ref-635429-S08037721622014070300000) Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [04/2014 - ]»(ref-635429-S26261876542014070300000) Result: 2 NG REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000)

Note. When using the Techstream with the engine switch off, connect the Techstream to the DLC3 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. The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart. Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2013 - ] If the smart key system is disabled through the customize function, enable the system before performing troubleshooting. Refer to CUSTOMIZE PARAMETERS [08/2013 - ] Before replacing the certification ECU (smart key ECU assembly), refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [08/2013 - ] Inspect the fuses for circuits related to this system before performing the following procedure. After completing repairs, confirm that the problem does not occur.

HINT

When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - DRIVER SIDE JUNCTION BLOCK ASSEMBLY) See step 3 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 2
INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY See step 1 Result Proceed to OK NG Result: 2 NG REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL [08/2013 - ]»(ref-635627-S03921509152014070300000) Result: 1 OK See step 3
INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (SMART KEY ECU ASSEMBLY) See step 2 Result Proceed to OK NG Result: 1 OK CHECK RELAY CONTACT SIDE CIRCUIT. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - 04/2014]»(ref-635429-S08037721622014070300000) Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [04/2014 - ]»(ref-635429-S26261876542014070300000) Result: 2 NG REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [08/2013 - ]»(ref-635673-S33087994032014070300000)

Smart Key System (For Start Function) (Diagnostic Codes & Symptom Tests): Other Toyota Corolla XI

CAUTION / NOTICE / HINT

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PROCEDURE

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