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Smart Key System (Keyless Start Function) (Diagnostic Codes & Symptom Tests) (Hybrid): Other Toyota Highlander III

Starter 7 illustrations ~10496 words

CAUTION / NOTICE / HINT

Note. When using the Techstream with the power 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 [02/2014 - ] Inspect the fuses of circuits related to this system before performing the following procedure. Before replacing the power management control ECU, refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [02/2014 - ] After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

HINT

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

PROCEDURE

  1. 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
  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
  3. CLEAR DTC Clear the DTCs. Body Electrical > Power Source Control > Clear DTCs Result Proceed to NEXT Result: 1 NEXT See step 4
  4. CHECK FOR DTC Recheck for DTCs. Body Electrical > Power Source Control > Trouble Codes OK DTC U0293 is not output. Result Proceed to OK NG Result: 1 OK END (TEMPORARY CONNECTION FAILURE IS SUSPECTED). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - ]»(ref-644130-S29851213432014072300000) Result: 2 NG REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000)

Note. When using the Techstream with the power 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. After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

HINT

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

  1. CHECK FOR DTC Note any DTCs that are output. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - ]»(ref-644139-S37155976872014072300000) Result Proceed to NEXT Result: 1 NEXT GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - ]»(ref-644298-S11625065512014072300000)

Note. When using the Techstream with the power 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 [02/2014 - ] Inspect the fuses of circuits related to this system before performing the following procedure. Before replacing the power management control ECU, refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [02/2014 - ] After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

HINT

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

  1. READ VALUE USING TECHSTREAM (READY SIGNAL) Connect the Techstream to the DLC3. Turn the power 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 Ready Signal Ready signal OFF, ON or Unknown OFF: Hybrid control system off ON: Hybrid control system on (on (READY)) Unknown: Malfunction - Body Electrical > Power Source Control > Data List Tester Display Ready Signal OK The Data List item changes in accordance with the Ready signal. Result Proceed to OK NG Result: 1 OK GO TO HYBRID CONTROL SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - ]»(ref-644289-S17385813852014072300000) Result: 2 NG See step 2
  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
  3. CHECK HARNESS AND CONNECTOR (GROUND) See step 2 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 3 OK See step 4
  4. CLEAR DTC Clear the DTCs. Body Electrical > Power Source Control > Clear DTCs Result Proceed to NEXT Result: 1 NEXT See step 5
  5. CHECK FOR DTC Turn the power switch on (IG). After 25 seconds have elapsed, check for DTCs. Body Electrical > Power Source Control > Trouble Codes OK DTC B2286 is not output. Result Proceed to OK NG Result: 1 OK END (TEMPORARY CONNECTION FAILURE IS SUSPECTED). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - ]»(ref-644130-S29851213432014072300000) Result: 2 NG REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000)

Note. When using the Techstream with the power 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 [02/2014 - ] Inspect the fuses of circuits related to this system before performing the following procedure. Before replacing the power management control ECU or steering lock ECU (steering lock actuator assembly), refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [02/2014 - ] After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

HINT

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

Scheme 106

Scheme 106: PROCEDURE
Scheme 106: PROCEDURE
  1. CHECK FOR DTC Check for DTCs. Body Electrical > Power Source Control > Trouble Codes Body Electrical > Smart Key > Trouble Codes HINT: If the steering cannot be unlocked, the hybrid control system cannot be started. If LIN communication is not available, the steering cannot be locked or unlocked. OK LIN communication system DTC B2785 and B2287 are not output simultaneously. Result Proceed to OK NG Result: 2 NG GO TO LIN COMMUNICATION SYSTEM (Proceed to Diagnostic Trouble Code Chart). Refer to «DIAGNOSTIC TROUBLE CODE CHART [02/2014 - ]»(ref-644355-S24555316922014072300000) Result: 1 OK See step 2
  2. READ VALUE USING TECHSTREAM (STEERING UNLOCK SWITCH) Connect the Techstream to the DLC3. Turn the power 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 ECU (steering lock actuator assembly) OFF or ON OFF: Steering locked ON: Steering unlocked When the shift lever is in P and the power switch is off, if any door is opened or closed, the steering is locked. When the electrical key transmitter sub-assembly is in the cabin and the power switch is turned on (ACC) or on (IG), the steering unlocks. The hybrid control system cannot be started when the steering unlock signal is off. Body Electrical > Power Source Control > Data List Tester Display Steering Unlock Switch 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 [02/2014 - ]»(ref-644331-S40300578122014072300000) Result: 1 A See step 3
  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
  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
  5. CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) Reconnect the F15 and F16 power management control ECU connectors. 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 F54-4 (SLP1) - Body ground Positive (+) tester probe --> F54-4 (SLP1) Negative (-) tester probe --> Body ground Steering locked --> unlocked* 10 kohms or higher --> Below 1 ohms HINT: *: If any of the doors are opened with the shift lever in P and the power switch off, the steering will be locked. If the power switch is turned on (ACC) or on (IG) with the electrical key transmitter sub-assembly in the cabin, 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 [02/2014 - ]»(ref-644331-S40300578122014072300000) Result: 1 OK See step 6
  6. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) Disconnect the F16 power management control ECU connector. Disconnect the F54 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 F16-12 (SLP) - F54-4 (SLP1) Always Below 1 ohms F16-12 (SLP) or F54-4 (SLP1) - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 1 OK REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR

Note. When using the Techstream with the power 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 [02/2014 - ] Inspect the fuses of circuits related to this system before performing the following procedure. Before replacing the power management control ECU, refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [02/2014 - ] After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

HINT

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

  1. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH1) Connect the Techstream to the DLC3. Turn the power 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 Switch1 State of brake pedal OFF or ON OFF: Brake pedal released ON: Brake pedal depressed Use this item to determine whether the stop light switch is malfunctioning. The hybrid control system cannot be started when this item is OFF. If the stop light switch is malfunctioning, the hybrid control system can be started by pressing and holding the power switch for a certain period of time. Body Electrical > Power Source Control > Data List Tester Display Stop Light Switch1 OK The Techstream display changes correctly in response to the brake pedal operation. Result Proceed to OK NG Result: 1 OK GO TO HYBRID CONTROL SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - ]»(ref-644289-S17385813852014072300000) Result: 2 NG See step 2
  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
  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
  4. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - STOP LIGHT SWITCH ASSEMBLY) Disconnect the F16 power management control ECU connector. Disconnect the A54 stop light switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F16-10 (STP) - A54-1 (L) Always Below 1 ohms F16-10 (STP) or A54-1 (L) - 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
  5. INSPECT STOP LIGHT SWITCH ASSEMBLY Remove the stop light switch assembly. Refer to «REMOVAL [02/2014 - ]»(ref-644330-S42848399902014072300000) Inspect the stop light switch assembly. Refer to «INSPECTION [02/2014 - ]»(ref-644330-S09001958222014072300000) Result Proceed to OK NG Result: 2 NG REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL [02/2014 - ]»(ref-644330-S42848399902014072300000) Result: 1 OK See step 6
  6. CHECK POWER MANAGEMENT CONTROL ECU Reconnect the F15 and F16 power management control ECU connectors. Reconnect the A54 stop light switch assembly connector. Measure the voltage according to the value(s) in the table below. *a Component with harness connected (Power Management Control ECU) Standard Voltage Tester Connection Condition Specified Condition F16-10 (STP) - Body ground Brake pedal released --> depressed 1 V or less --> 9 V or higher Result Proceed to OK NG Result: 1 OK REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR

Note. When using the Techstream with the power 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 [02/2014 - ] Inspect the fuses of circuits related to this system before performing the following procedure. Before replacing the power management control ECU, refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [02/2014 - ] After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

HINT

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

Scheme 107

Scheme 107: PROCEDURE
Scheme 107: PROCEDURE
  1. READ VALUE USING TECHSTREAM (VEHICLE SPEED METER) Connect the Techstream to the DLC3. Turn the power 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 Min.: 0, Max.: 255 Almost same as actual vehicle speed (Speedometer tester) - Body Electrical > Combination Meter > Data List Tester Display Vehicle Speed Meter HINT: Using a speedometer tester, check the actual vehicle speed and the vehicle speed displayed on the Techstream. OK Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester. Result Proceed to OK NG Result: 2 NG GO TO METER / GAUGE SYSTEM (Speedometer Malfunction). Refer to «Speedometer Malfunction [02/2014 - ]»(ref-644324-S03184992742014072300000) Result: 1 OK See step 2
  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 (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - ]»(ref-644142-S33447419492014072300000) Result: 2 NG See step 3
  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
  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
  5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - COMBINATION METER ASSEMBLY) Disconnect the F15 power management control ECU connector. Disconnect the F22 combination meter assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F15-16 (SPDI) - F22-3 (+S) Always Below 1 ohms F15-16 (SPDI) or F22-3 (+S) - 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 6
  6. CHECK POWER MANAGEMENT CONTROL ECU Reconnect the F15 and F16 power management control ECU connectors. Reconnect the F22 combination meter assembly connector. Using an oscilloscope, check the waveform. *a Component with harness connected (Power Management Control ECU) *b Waveform 1 OK Tester Connection Condition Tool Setting Specified Condition F15-16 (SPDI) - F15-6 (E1) Power switch on (IG), vehicle being driven at approx. 5 km/h (3 mph) 5 V/DIV., 20 ms./DIV. Pulse generation (See waveform 1) HINT: The wavelength becomes shorter as the vehicle speed increases. Result Proceed to OK NG Result: 1 OK REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000) Result: 3 NG GO TO METER / GAUGE SYSTEM (Speed Signal Circuit). Refer to «Speed Signal Circuit [02/2014 - ]»(ref-644324-S20940371102014072300000)

Note. When using the Techstream with the power 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 [02/2014 - ] Before replacing the power management control ECU, refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [02/2014 - ] After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

HINT

  1. Before proceeding with troubleshooting, check if there are any signs of water damage to the power management control ECU. If there are any signs of water damage, replace the power management control ECU and take measures against the cause of the water damage.
  2. When the cable is disconnected and reconnected to the negative (-) auxiliary battery terminal, the power source mode returns to the state it was in before the cable was disconnected.
  1. CHECK WATER INTRUSION Check that the power management control ECU, its surrounding area and wire harnesses have no signs of water intrusion. Result Result Proceed to No sign of water intrusion found A Signs of water intrusion found B Result: 1 A REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000) Result: 2 B TAKE AGAINST FOR WATER INTRUSION AND REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000)

Note. When using the Techstream with the power 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 [02/2014 - ] Inspect the fuses of circuits related to this system before performing the following procedure. Before replacing the power management control ECU, refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [02/2014 - ] After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

HINT

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

  1. CHECK FOR DTC Turn the power switch on (IG) and wait 25 seconds. Using the Techstream, check for power management control ECU DTCs. Body Electrical > Power Source Control > Trouble Codes OK DTC B2285 is not output simultaneously. Result Proceed to OK NG Result: 2 NG GO TO DTC B2285. Refer to «DTC B2285: Steering Lock Position Signal Circuit Malfunction [02/2014 - ]»(ref-644381-S26435289722014072300000) Result: 1 OK See step 2
  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
  3. CHECK HARNESS AND CONNECTOR (GROUND) See step 2 Result Proceed to OK NG Result: 1 OK REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR

Note. When using the Techstream with the power 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 [02/2014 - ] Inspect the fuses of circuits related to this system before performing the following procedure. Before replacing the power management control ECU, refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [02/2014 - ] After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

HINT

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

Scheme 108

Scheme 108: PROCEDURE
Scheme 108: PROCEDURE

Scheme 109

Scheme 109
Scheme 109
  1. CHECK HARNESS AND CONNECTOR (POWER SOURCE) Disconnect the F15 and F16 power management control ECU connectors. *a Front view of wire harness connector (to Power Management Control ECU) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F15-1 (AM22) - Body ground Power switch off 11 to 14 V F16-7 (AM21) - Body ground Power switch off 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
  2. CHECK HARNESS AND CONNECTOR (GROUND) Disconnect the F15 and F16 power management control ECU connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F15-5 (E01) - Body ground Always Below 1 ohms F15-6 (E1) - Body ground Always Below 1 ohms F16-4 (E12) - Body ground Always Below 1 ohms F16-5 (E02) - Body ground Always Below 1 ohms *a Front view of wire harness connector (to Power Management Control ECU) Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 3
  3. CHECK POWER MANAGEMENT CONTROL ECU Reconnect the F15 and F16 power management control ECU connectors. *a Component with harness connected (Power Management Control ECU) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F16-2 (IG1D) - Body ground Power switch on (ACC) --> Power switch on (IG) 1 V or less --> 9 V or higher Result Proceed to OK NG Result: 1 OK END (TEMPORARY CONNECTION FAILURE IS SUSPECTED). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - ]»(ref-644130-S29851213432014072300000) Result: 2 NG REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000)

Note. When using the Techstream with the power 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 [02/2014 - ] Inspect the fuses of circuits related to this system before performing the following procedure. Before replacing the power management control ECU, refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [02/2014 - ] After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

HINT

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

Scheme 110

Scheme 110: PROCEDURE
Scheme 110: PROCEDURE
  1. 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
  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
  3. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) Disconnect the F16 power management control ECU connector. Disconnect the 4A instrument panel junction block assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F16-1 (ACCD) - 4A-28 Always Below 1 ohms F16-1 (ACCD) or 4A-28 - Body ground Always 10 kohms or higher 4A-27 - 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 4
  4. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (ACC RELAY) Remove the instrument panel junction block assembly. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S31991055142014072300000) Measure the resistance according to the value(s) in the table below. *a Component without harness connected (Instrument Panel Junction Block Assembly) - - Standard Resistance Tester Connection Condition Specified Condition 4A-28 - 4A-27 20°C (68°F) 130.92 to 190.74 ohms 4K-1 - 4A-37 Auxiliary battery voltage not applied to terminals 4A-28 and 4A-27 10 kohms or higher Auxiliary battery voltage applied to terminals 4A-28 and 4A-27 Below 1 ohms Result Proceed to OK NG Result: 2 NG REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S31991055142014072300000) Result: 1 OK See step 5
  5. CHECK POWER MANAGEMENT CONTROL ECU Reconnect the F15 and F16 power management control ECU connectors. *a Component with harness connected (Power Management Control ECU) Install the instrument panel junction block assembly. Refer to «INSTALLATION [02/2014 - ]»(ref-644295-S21028689712014072300000) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F16-1 (ACCD) - Body ground Power switch off --> Power switch on (ACC) 1 V or less --> 8.5 V or higher Result Proceed to OK NG Result: 1 OK END (TEMPORARY CONNECTION FAILURE IS SUSPECTED). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - ]»(ref-644130-S29851213432014072300000) Result: 2 NG REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000)

Note. When using the Techstream with the power 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 [02/2014 - ] Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart. If the smart key system (for Start Function) has been canceled, enable the system before performing troubleshooting. Refer to CUSTOMIZE PARAMETERS [02/2014 - ] Inspect the fuses of circuits related to this system before performing the following procedure. Before replacing the electrical key transmitter sub-assembly or power management control ECU, refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [02/2014 - ] After completing repairs, confirm that the problem does not recur.

HINT

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

Scheme 111

Scheme 111: PROCEDURE
Scheme 111: PROCEDURE
  1. CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY Press a switch of the electrical key transmitter sub-assembly. OK The electrical key transmitter sub-assembly LED illuminates. Result Proceed to OK NG Result: 2 NG See step 12 Result: 1 OK See step 2
  2. READ VALUE USING TECHSTREAM (KEY LOW BATTERY) Connect the Techstream to the DLC3. Turn the power 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 Key Low Battery Transmitter battery depleted No or Yes No: Transmitter battery not depleted Yes: Transmitter battery depleted The electrical key transmitter sub-assembly sends voltage information to the certification ECU (smart key ECU assembly) when it is transmitting. The certification ECU (smart key ECU assembly) displays "Yes" for the "Key Low Battery" item of the Data List when this voltage information indicates 2.2 V or less. This Data List item should be checked when the electrical key transmitter sub-assembly is at room temperature (example: at -20°C (-4°F), "Yes" may be displayed even if the transmitter battery is new). Body Electrical > Smart Key > Data List Tester Display Key Low Battery OK "No" is displayed on the Techstream screen. Result Proceed to OK NG Result: 2 NG REPLACE TRANSMITTER BATTERY. Refer to «REPLACEMENT [02/2014 - ]»(ref-644348-S19663163222014072300000) Result: 1 OK See step 3
  3. CHECK POWER SOURCE MODE Get into the vehicle while carrying an electrical key transmitter sub-assembly. Move the shift lever to P. Press the power switch with the brake pedal released and check that the power source mode changes. Result Result Proceed to The power source mode changes A The power source mode does not change B Result: 1 A END (AFFECTED BY WAVE INTERFERENCE) Result: 2 B See step 4
  4. CHECK SMART KEY SYSTEM (for Start Function) Remove the transmitter battery from the electrical key transmitter sub-assembly. With the brake pedal depressed, hold the electrical key transmitter sub-assembly near the power switch and check if the power source mode changes. OK The power source mode changes. HINT: If the power source mode changes, the cabin verification is malfunctioning. *1 Power Switch *2 Electrical Key Transmitter Sub-assembly Result Result Proceed to The power source mode does not change A The power source mode changes B Result: 2 B See step 13 Result: 1 A See step 5
  5. CHECK FOR DTC Using the Techstream, check for DTCs. Body Electrical > Power Source Control > Trouble Codes Body Electrical > Smart Key > Trouble Codes Result Result Proceed to DTCs are not output A Smart key system (for Start Function) DTCs are output B Result: 2 B GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART [02/2014 - ]»(ref-644139-S15170733062014072300000) Result: 1 A See step 6
  6. 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 7
  7. 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 8
  8. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) Disconnect the F15 and F16 power management control ECU connectors. Disconnect the 4A instrument panel junction block assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F16-1 (ACCD) - 4A-28 Always Below 1 ohms F16-1 (ACCD) or 4A-28 - Body ground Always 10 kohms or higher F16-2 (IG1D) - 4A-16 Always Below 1 ohms F16-2 (IG1D) or 4A-16 - Body ground Always 10 kohms or higher 4A-27 - 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 9
  9. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG1 NO. 1, IG1 NO. 2, IG1 NO. 3, ACC RELAY) Remove the instrument panel junction block assembly. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S31991055142014072300000) Measure the resistance according to the value(s) in the table below. *a Component without harness connected (Instrument Panel Junction Block Assembly) - - Standard Resistance Tester Connection Condition Specified Condition 4A-16 - 4A-27 20°C (68°F) 87.32 to 127.14 ohms 4A-28 - 4A-27 20°C (68°F) 130.92 to 190.74 ohms 4K-1 - 4A-35 Auxiliary battery voltage applied to terminals 4A-16 and 4A-27 Below 1 ohms Auxiliary battery voltage not applied to terminals 4A-16 and 4A-27 10 kohms or higher 4K-1 - 4A-22 Auxiliary battery voltage applied to terminals 4A-16 and 4A-27 Below 1 ohms Auxiliary battery voltage not applied to terminals 4A-16 and 4A-27 10 kohms or higher 4K-1 - 4F-16 Auxiliary battery voltage applied to terminals 4A-16 and 4A-27 Below 1 ohms Auxiliary battery voltage not applied to terminals 4A-16 and 4A-27 10 kohms or higher 4K-1 - 4A-37 Auxiliary battery voltage applied to terminals 4A-28 and 4A-27 Below 1 ohms Auxiliary battery voltage not applied to terminals 4A-28 and 4A-27 10 kohms or higher Result Proceed to OK NG Result: 2 NG REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S31991055142014072300000) Result: 1 OK See step 10
  10. CHECK POWER MANAGEMENT CONTROL ECU Install the instrument panel junction block assembly. Refer to «INSTALLATION [02/2014 - ]»(ref-644295-S21028689712014072300000) Reconnect the F15 and F16 power management control ECU connectors. Measure the voltage while confirming the power source mode on the Data List. *a Component with harness connected (Power Management Control ECU) 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 or ST ON All OFF: Power switch off (ACC and IG) ACC ON: Power switch on (ACC) IG ON: Power switch on (IG) ST ON: Sending hybrid control system start request signal - Body Electrical > Power Source Control > Data List Tester Display Power Supply Condition Standard Voltage Tester Connection Condition Specified Condition F16-2 (IG1D) - Body ground Power switch off 1 V or less Power switch on (ACC) 1 V or less Power switch on (IG) 9 V or higher F16-1 (ACCD) - Body ground Power switch off 1 V or less Power switch on (ACC) 8.5 V or higher Power switch on (IG) 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 [02/2014 - ]»(ref-644130-S29851213432014072300000) Result: 2 NG See step 11
  11. READ VALUE USING TECHSTREAM (START SWITCH1, START SWITCH2) Connect the Techstream to the DLC3. Turn the power 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 Start Switch1 Power switch 1 status OFF or ON OFF: Power switch not pressed ON: Power switch pressed If the power switch is pressed for a short time, the display may not change. Use this item to determine whether the power switch input signal is malfunctioning. Start Switch2 Power switch 2 status OFF or ON OFF: Power switch not pressed ON: Power switch pressed Backup for power switch 1. However, when the power switch is pressed and held, the control functions only when both power switch 1 and 2 are normal. Behaves the same way as power switch 1. Body Electrical > Power Source Control > Data List Tester Display Start Switch1 Start Switch2 OK The Techstream display changes correctly in response to the power switch operation. Result Proceed to OK NG Result: 1 OK REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000) Result: 2 NG See step 13
  12. INSPECT TRANSMITTER BATTERY Inspect the transmitter battery. Refer to «INSPECTION [02/2014 - ]»(ref-644348-S27127959182014072300000) NOTE: Do not wrap the lead wire around a terminal, wedge it between terminals, or solder it. The terminal may be deformed or damaged, and the transmitter battery will not be able to be installed correctly. Result Proceed to OK NG Result: 1 OK REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY Result: 2 NG REPLACE TRANSMITTER BATTERY. Refer to «REPLACEMENT [02/2014 - ]»(ref-644348-S19663163222014072300000)
  13. INSPECT POWER SWITCH Remove the power switch. Refer to «REMOVAL [02/2014 - ]»(ref-644326-S31072403442014072300000) Inspect the power switch. Refer to «INSPECTION [02/2014 - ]»(ref-644326-S21821439852014072300000) Result Proceed to OK NG Result: 7 NG REPLACE POWER SWITCH. Refer to «REMOVAL [02/2014 - ]»(ref-644326-S31072403442014072300000) Result: 1 OK See step 14
  14. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - POWER SWITCH) Disconnect the F15 power management control ECU connector. Disconnect the F49 power switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F15-7 (SSW1) - F49-5 (SS1) Always Below 1 ohms F15-7 (SSW1) or F49-5 (SS1) - Body ground Always 10 kohms or higher F15-17 (SSW2) - F49-1 (SS2) Always Below 1 ohms F15-17 (SSW2) or F49-1 (SS2) - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 1 OK REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR

Note. When using the Techstream with the power 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 [02/2014 - ] Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart. If the smart key system (for Start Function) has been canceled, enable the system before performing troubleshooting. Refer to CUSTOMIZE PARAMETERS [02/2014 - ] Inspect the fuses of circuits related to this system before performing the following procedure. Before replacing the power management control ECU or main body ECU (multiplex network body ECU), refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [02/2014 - ] After completing repairs, confirm that the problem does not recur.

HINT

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

Scheme 112

Scheme 112: PROCEDURE
Scheme 112: PROCEDURE
  1. CHECK FOR DTC Using the Techstream, check for DTCs. Body Electrical > Power Source Control > Trouble Codes Body Electrical > Smart Key > Trouble Codes Result Result Proceed to DTCs are not output A Smart key system (for Start Function) DTCs are output B Result: 2 B GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART [02/2014 - ]»(ref-644139-S15170733062014072300000) Result: 1 A See step 2
  2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) Disconnect the F16 power management control ECU connector. Disconnect the 4A instrument panel junction block assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F16-2 (IG1D) - 4A-16 Always Below 1 ohms F16-2 (IG1D) or 4A-16 - Body ground Always 10 kohms or higher 4A-27 - 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
  3. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - SEMICONDUCTOR PWR INTEGRATION ECU) Disconnect the 1E semiconductor pwr integration ECU connector. Disconnect the 4A instrument panel junction block assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4A-17 - 1E-1 Always Below 1 ohms 4A-17 or 1E-1 - 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
  4. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG1 NO. 1, IG1 NO. 2, IG1 NO. 3 RELAY) Remove the instrument panel junction block assembly. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S31991055142014072300000) Measure the resistance according to the value(s) in the table below. *a Component without harness connected (Instrument Panel Junction Block Assembly) - - Standard Resistance Tester Connection Condition Specified Condition 4A-16 - 4A-27 20°C (68°F) 87.32 to 127.14 ohms 4K-1 - 4A-35 Auxiliary battery voltage applied to terminals 4A-16 and 4A-27 Below 1 ohms Auxiliary battery voltage not applied to terminals 4A-16 and 4A-27 10 kohms or higher 4K-1 - 4A-22 Auxiliary battery voltage applied to terminals 4A-16 and 4A-27 Below 1 ohms Auxiliary battery voltage not applied to terminals 4A-16 and 4A-27 10 kohms or higher 4K-1 - 4F-16 Auxiliary battery voltage applied to terminals 4A-16 and 4A-27 Below 1 ohms Auxiliary battery voltage not applied to terminals 4A-16 and 4A-27 10 kohms or higher Result Proceed to OK NG Result: 2 NG REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S31991055142014072300000) Result: 1 OK See step 5
  5. INSPECT SEMICONDUCTOR PWR INTEGRATION ECU (IG2 RELAY) Remove the semiconductor pwr integration ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S41599895942014072300000) Inspect the semiconductor pwr integration ECU. Refer to «INSPECTION [02/2014 - ]»(ref-644295-S20326211062014072300000) Result Proceed to OK NG Result: 2 NG REPLACE SEMICONDUCTOR PWR INTEGRATION ECU (IG2 RELAY). Refer to «REMOVAL [02/2014 - ]»(ref-644295-S41599895942014072300000) Result: 1 OK See step 6
  6. CHECK POWER MANAGEMENT CONTROL ECU Reconnect the F16 power management control ECU connector. Install the instrument panel junction block assembly. Refer to «INSTALLATION [02/2014 - ]»(ref-644295-S21028689712014072300000) Install the semiconductor pwr integration ECU. Refer to «INSTALLATION [02/2014 - ]»(ref-644295-S13551161742014072300000) Measure the voltage according to the value(s) in the table below. *a Component with harness connected (Power Management Control ECU) Standard Voltage Tester Connection Condition Specified Condition F16-2 (IG1D) - Body ground Power switch on (ACC) --> Power 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 [02/2014 - ]»(ref-644130-S29851213432014072300000) Result: 2 NG REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000)

Note. When using the Techstream with the power 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 [02/2014 - ] Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart. If the smart key system (for Start Function) has been canceled, enable the system before performing troubleshooting. Refer to CUSTOMIZE PARAMETERS [02/2014 - ] Inspect the fuses of circuits related to this system before performing the following procedure. Before replacing the power management control ECU, refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [02/2014 - ] After completing repairs, confirm that the problem does not recur.

HINT

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

  1. CHECK FOR DTC Using the Techstream, check for DTCs. Body Electrical > Power Source Control > Trouble Codes Body Electrical > Smart Key > Trouble Codes Result Result Proceed to DTCs are not output A Smart key system (for Start Function) DTCs are output B Result: 2 B GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART [02/2014 - ]»(ref-644139-S15170733062014072300000) Result: 1 A See step 2
  2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INSTRUMENT PANEL 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 3
  3. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (ACC RELAY) See step 4 Result Proceed to OK NG Result: 3 NG REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S31991055142014072300000) Result: 1 OK See step 4
  4. CHECK POWER MANAGEMENT CONTROL ECU See step 5 Result Proceed to OK NG Result: 1 OK USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - ]»(ref-644130-S29851213432014072300000) Result: 2 NG REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000)

Note. When using the Techstream with the power 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 [02/2014 - ] If the smart key system (for Start Function) has been canceled, enable the system before performing troubleshooting. Refer to CUSTOMIZE PARAMETERS [02/2014 - ] Inspect the fuses of circuits related to this system before performing the following procedure. Before replacing the power management control ECU, certification ECU (smart key ECU assembly) or electrical key transmitter sub-assembly, refer to smart key system (for Start Function) Precaution. Refer to PRECAUTION [02/2014 - ] After completing repairs, confirm that the problem does not recur.

HINT

  1. When the cable is disconnected and reconnected to the negative (-) auxiliary battery terminal, the power source mode returns to the state it was in before the cable was disconnected.
  2. If the power source mode is changed from on (IG) to on (ACC) with the shift lever in any position other than P, then the shift lever is moved to P and the power switch is pressed with the brake pedal depressed, the power source mode will changed off.
  1. CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY Press a switch of the electrical key transmitter sub-assembly. OK The electrical key transmitter sub-assembly LED illuminates. Result Proceed to OK NG Result: 2 NG See step 11 Result: 1 OK See step 2
  2. READ VALUE USING TECHSTREAM (KEY LOW BATTERY) Connect the Techstream to the DLC3. Turn the power 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 Key Low Battery Transmitter battery depleted No or Yes No: Transmitter battery not depleted Yes: Transmitter battery depleted The electrical key transmitter sub-assembly sends voltage information to the certification ECU (smart key ECU assembly) when it is transmitting. The certification ECU (smart key ECU assembly) displays "Yes" for the "Key Low Battery" item of the Data List when this voltage information indicates 2.2 V or less. This Data List item should be checked when the electrical key transmitter sub-assembly is at room temperature (example: at -20°C (-4°F), "Yes" may be displayed even if the transmitter battery is new). Body Electrical > Smart Key > Data List Tester Display Key Low Battery OK "No" is displayed on the Techstream screen. Result Proceed to OK NG Result: 2 NG REPLACE TRANSMITTER BATTERY. Refer to «REPLACEMENT [02/2014 - ]»(ref-644348-S19663163222014072300000) Result: 1 OK See step 3
  3. CHECK WAVE ENVIRONMENT If the problem occurs in certain locations or times of day, the possibility of wave interference is high. HINT: Whether the problem is due to wave interference can be checked by holding the electrical key transmitter sub-assembly near the electrical key and tire pressure monitoring system receiver assembly. OK Power source mode changes to on (READY). Result Proceed to OK NG Result: 1 OK AFFECTED BY WAVE INTERFERENCE Result: 2 NG See step 4
  4. CHECK POWER SWITCH CONDITION Get into the vehicle while carrying an electrical key transmitter sub-assembly. Move the shift lever to P. With the brake pedal released, check that pressing the power switch causes the power source mode to change. 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) [02/2014 - ]»(ref-644381-S01720784572014072300000) Result: 3 C GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (ACC). Refer to «Power Source Mode does not Change to ON (ACC) [02/2014 - ]»(ref-644381-S14123001232014072300000) Result: 4 D GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (IG). Refer to «Power Source Mode does not Change to ON (IG) [02/2014 - ]»(ref-644381-S15902740032014072300000) Result: 1 A See step 5
  5. READ VALUE USING TECHSTREAM (SHIFT P SIGNAL) Connect the Techstream to the DLC3. Turn the power 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 Shift P Signal Shift position P OFF or ON OFF: Shift lever not in P ON: Shift lever in P Use this item to determine whether the shift lever position switch (P) is malfunctioning. Body Electrical > Power Source Control > Data List Tester Display Shift P Signal OK The item in the Data List changes according to the shift position. Result Proceed to OK NG Result: 2 NG GO TO HYBRID CONTROL SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - ]»(ref-644289-S17385813852014072300000) Result: 1 OK See step 6
  6. CHECK FOR DTC Using the Techstream, check for DTCs. Body Electrical > Power Source Control > Trouble Codes Body Electrical > Smart Key > Trouble Codes Result Result Proceed to DTCs are not output A Smart key system (for Start Function) DTCs are output B Result: 2 B GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART [02/2014 - ]»(ref-644139-S15170733062014072300000) Result: 1 A See step 7
  7. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH1) Connect the Techstream to the DLC3. Turn the power 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 Switch1 State of brake pedal OFF or ON OFF: Brake pedal released ON: Brake pedal depressed Use this item to determine whether the stop light switch is malfunctioning. The hybrid control system cannot be started when this item is OFF. If the stop light switch is malfunctioning, the hybrid control system can be started by pressing and holding the power switch for a certain period of time. Body Electrical > Power Source Control > Data List Tester Display Stop Light Switch1 OK The Techstream display changes correctly in response to the brake operation. Result Proceed to OK NG Result: 2 NG See step 12 Result: 1 OK See step 8
  8. READ VALUE USING TECHSTREAM (STARTER REQUEST SIGNAL) Connect the Techstream to the DLC3. Turn the power 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 Starter Request Signal Hybrid control system start request signal status OFF or ON OFF: After approx. 1 second has elapsed, the power switch is released ON: With the shift lever in P and brake pedal depressed, the power switch is pressed and held When the hybrid control system cannot be started due to a start request signal malfunction, OFF is displayed. When the power switch is pressed, the duration of time that ON is displayed will be extremely short. As such, the power switch needs to be pressed and held for a certain period of time. Body Electrical > Power Source Control > Data List Tester Display Starter Request Signal NOTE: Check that the key indicator is displayed on the multi-information display in the combination meter assembly, and then press the power switch. OK The Techstream display changes correctly in response to the power switch operation. Result Proceed to OK NG Result: 2 NG GO TO HYBRID CONTROL SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - ]»(ref-644289-S17385813852014072300000) Result: 1 OK See step 9
  9. CHECK STEERING LOCK Check that the steering unlocks when the power switch is turned on (ACC). OK The steering unlocks. Result Proceed to OK NG Result: 2 NG GO TO STEERING LOCK SYSTEM (UNABLE TO UNLOCK STEERING). Refer to «Unable to Unlock Steering Wheel (Hybrid Control System cannot Start) [02/2014 - ]»(ref-644356-S39108381712014072300000) Result: 1 OK See step 10
  10. CHECK SECURITY INDICATOR LIGHT (IMMOBILISER SYSTEM UNSET) Get into the vehicle while carrying an electrical key transmitter sub-assembly. Move the shift lever to P. Press the power 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: The immobiliser function can be determined to be 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 The 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: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [02/2014 - ]»(ref-644358-S18525235502014072300000) Result: 2 NG GO TO IMMOBILISER SYSTEM (PROBLEM SYMPTOMS TABLE). Refer to «PROBLEM SYMPTOMS TABLE [02/2014 - ]»(ref-644156-S34330228242014072300000)
  11. INSPECT TRANSMITTER BATTERY Inspect the transmitter battery. Refer to «INSPECTION [02/2014 - ]»(ref-644348-S27127959182014072300000) NOTE: Do not wrap the lead wire around a terminal, wedge it between terminals, or solder it. The terminal may be deformed or damaged, and the transmitter battery will not be able to be installed correctly. Result Proceed to OK NG Result: 1 OK REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY Result: 2 NG REPLACE TRANSMITTER BATTERY. Refer to «REPLACEMENT [02/2014 - ]»(ref-644348-S19663163222014072300000)
  12. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - STOP LIGHT SWITCH ASSEMBLY) Disconnect the F16 power management control ECU connector. Disconnect the A54 stop light switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F16-10 (STP) - A54-1 (L) Always Below 1 ohms F16-10 (STP) or A54-1 (L) - 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 13
  13. INSPECT STOP LIGHT SWITCH ASSEMBLY Remove the stop light switch assembly. Refer to «REMOVAL [02/2014 - ]»(ref-644330-S42848399902014072300000) Inspect the stop light switch assembly. Refer to «INSPECTION [02/2014 - ]»(ref-644330-S09001958222014072300000) Result Proceed to OK NG Result: 2 NG REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL [02/2014 - ]»(ref-644330-S42848399902014072300000) Result: 1 OK See step 14
  14. CHECK POWER MANAGEMENT CONTROL ECU Reconnect the F15 and F16 power management control ECU connectors. Reconnect the A54 stop light switch assembly connector. Measure the voltage according to the value(s) in the table below. *a Component with harness connected (Power Management Control ECU) Standard Voltage Tester Connection Condition Specified Condition F16-10 (STP) - Body ground Brake pedal released --> depressed 1 V or less --> 9 V or higher Result Proceed to OK NG Result: 1 OK REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL [02/2014 - ]»(ref-644295-S28292849892014072300000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR

More articles — Smart Key System (Keyless Start Function) (Diagnostic Codes & Symptom Tests) (Hybrid)