СИСТЕМА ЗАПУСКА И ОСТАНОВА (для моделей с 2AR-FE) Starter Signal Circuit

DESCRIPTION

By using the starter delay circuit, the engine stop and start ECU can activate the ST NO. 2 relay (for starter motor operation) after activating the ST NO. 1 relay (for starter pinion operation) to operate the starter assembly.

WIRING DIAGRAM

B006N1EE01
B006MM7E01

CAUTION / NOTICE / HINT

Note


  • When replacing the engine stop and start ECU with a new one, make sure to download the previous status (number of starter operations) of the old engine stop and start ECU. After replacing the engine stop and start ECU, turn the engine switch on (IG) and wait 20 seconds, then confirm that "OK" is displayed for the Data List item [Stop&Start Operating Permission (Discharged Oil Pump Air)]. Then upload the previous status (number of starter operations) to the engine stop and start ECU.

    Click here

  • After replacing the engine stop and start ECU or air conditioning amplifier assembly, reset and perform learning of the air conditioning information in the engine stop and start ECU.

    Click here

  • After replacing the engine stop and start ECU or airbag ECU assembly, clear and calibrate the deceleration sensor zero point in the engine stop and start ECU.

    Click here

  • After replacing the starter assembly, perform initialization of the number of starter operations stored in the engine stop and start ECU.

    Click here

  • When the starter assembly is replaced, "ST NO. 1 relay" and "ST NO. 2 relay" must be also replaced.

  • After turning engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Click here

  • Inspect the fuses for circuits related to this system before performing the following procedure.

  • After replacing the engine stop and start ECU, perform learning of the external backup boost converter (eco run vehicle converter assembly).

    Click here

PROCEDURE


  1. CHECK CRANKING


    1. Turn the engine switch on (START) and check that the engine cranks.

      Result
      Result Proceed to
      Engine cranks A
      Engine does not crank B

    B

    PERFORM ACTIVE TEST USING GTS (STARTER(HOOD CLOSE)) Click here

    A

  2. PERFORM ACTIVE TEST USING GTS (STARTER(HOOD CLOSE))


    1. Check that the engine hood is closed.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the GTS on.

    5. Enter the following menus: Powertrain / Stop and Start / Active Test / Starter(Hood Close).


      Powertrain > Stop and Start > Active Test
      Tester Display
      Starter(Hood Close)

    6. Check whether the engine cranks while the Active Test [Starter(Hood Close)] is being performed.

      Note

      The Active Test [Starter(Hood Close)] is stopped automatically 3 seconds after the starter assembly begins operating.

      Standard
      Engine cranks
      Result
      Proceed to
      OK
      NG

    OK

    GO TO DTC P160300 (CONFIRM CAUSE OF ENGINE STALL) Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (BIN1 AND BIN2 TERMINALS POWER SOURCE CIRCUIT)

    B006MQSC39
    *a

    Front view of wire harness connector

    (to Engine Stop and Start ECU)

    1. Disconnect the engine stop and start ECU connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      A59-1 (BIN2) - Body ground Always 9.5 to 14 V
      A59-3 (BIN1) - Body ground Always 9.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE STOP AND START ECU - BATTERY)

    OK

  4. CHECK HARNESS AND CONNECTOR (IG1 TERMINAL POWER SOURCE CIRCUIT)

    B006PJRC64
    *a

    Front view of wire harness connector

    (to Engine Stop and Start ECU)

    1. Disconnect the engine stop and start ECU connector.

    2. Turn the engine switch on (IG).

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      G50-21 (IG1) - Body ground Engine switch on (IG) 9.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - JUNCTION BLOCK ASSEMBLY LH) Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (+B TERMINALS POWER SOURCE CIRCUIT)

    B006LOEC34
    *a

    Front view of wire harness connector

    (to Engine Stop and Start ECU)

    1. Disconnect the engine stop and start ECU connectors.

    2. Turn the engine switch on (IG).

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      A60-1 (+B) - Body ground Engine switch on (IG) 9.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE STOP AND START ECU - NO. 1 INTEGRATION RELAY)

    OK

  6. CHECK HARNESS AND CONNECTOR (IG2 TERMINALS POWER SOURCE CIRCUIT)

    B006PJRC77
    *a

    Front view of wire harness connector

    (to Engine Stop and Start ECU)

    1. Disconnect the engine stop and start ECU connectors.

    2. Turn the engine switch on (IG).

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      G50-18 (IG2) - Body ground Engine switch on (IG) 9.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - JUNCTION BLOCK ASSEMBLY LH) Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - BODY GROUND)


    1. Disconnect the engine stop and start ECU connectors.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A59-2 (GND2) - Body ground Always Below 1 Ω
      A59-8 (GND1) - Body ground Always Below 1 Ω
      A60-6 (DGND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ENGINE STOP AND START ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - JUNCTION BLOCK ASSEMBLY LH)


    1. Disconnect the engine stop and start ECU connector.

    2. Disconnect the junction block assembly LH connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      G50-18 (IG2) - 4A-50 Always Below 1 Ω
      G50-18 (IG2) or 4A-50 - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. INSPECT JUNCTION BLOCK ASSEMBLY LH


    1. Remove the junction block assembly LH.

      Click here

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      4F-5 - 4A-50 Always Below 1 Ω
      4F-5 or 4A-50 - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE JUNCTION BLOCK ASSEMBLY LH Click here

    OK

  10. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - JUNCTION BLOCK ASSEMBLY LH)


    1. Disconnect the No. 1 integration relay connector.

    2. Disconnect the junction block assembly LH connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      1D-1 - 4F-5 Always Below 1 Ω
      1D-1 or 4F-5 - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO.1 INTEGRATION RELAY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  11. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - JUNCTION BLOCK ASSEMBLY LH)


    1. Disconnect the engine stop and start ECU connector.

    2. Disconnect the junction block assembly LH connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      G50-21 (IG1) - 4A-51 Always Below 1 Ω
      G50-21 (IG1) or 4A-51 - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE JUNCTION BLOCK ASSEMBLY LH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  12. PERFORM ACTIVE TEST USING GTS (STARTER(HOOD CLOSE))


    1. Check that the engine hood is closed.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the GTS on.

    5. Enter the following menus: Powertrain / Stop and Start / Active Test / Starter(Hood Close).


      Powertrain > Stop and Start > Active Test
      Tester Display
      Starter(Hood Close)

    6. Check whether the engine cranks while the Active Test [Starter(Hood Close)] is being performed.

      Note

      The Active Test [Starter(Hood Close)] is stopped automatically 3 seconds after the starter assembly begins operating.

      Standard
      Engine cranks
      Result
      Result Proceed to
      Engine cranks A
      Engine does not crank B

    B

    CHECK ENGINE STOP AND START ECU (STA AND STA2 SIGNAL) Click here

    A

  13. READ VALUE USING GTS (NEUTRAL SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Stop and Start / Data List / Neutral Switch.


      Powertrain > Stop and Start > Data List
      Tester Display
      Neutral Switch

    5. In accordance with the display on the GTS, read the Data List.

      OK
      GTS Display Condition Normal Condition
      Neutral Switch Shift lever in P or N ON
      Shift lever not in P or N OFF
      Result
      Proceed to
      OK
      NG

    OK

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - PARK/NEUTRAL POSITION SWITCH ASSEMBLY) Click here

    NG

  14. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. Inspect the park/neutral position switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    OK

  15. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ST NO. 1 RELAY)


    1. Disconnect the certification ECU (smart key ECU assembly) connector.

    2. Remove the ST NO. 1 relay from the No. 1 engine room relay block.

    3. Disconnect the engine stop and start ECU connector.

    4. Disconnect the ECM connector.

    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-10 (STAR) - 1 (ST NO. 1 relay) Shift lever in P or N Below 1 Ω
      Shift lever not in P or N 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  16. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)


    1. Disconnect the certification ECU (smart key ECU assembly) connector.

    2. Disconnect the park/neutral position switch assembly connector.

    3. Disconnect the engine stop and start ECU connector.

    4. Disconnect the ECM connector.

    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-10 (STAR) - D5-4 (B) Always Below 1 Ω
      A58-10 (STAR) or D5-4 (B) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  17. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (STAR SIGNAL)


    1. B006LOEC30
      *a

      Front view of wire harness connector

      (to Engine Stop and Start ECU)

      Disconnect the engine stop and start ECU connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      A60-17 (CLL) - Body ground Engine start 9.5 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    GO TO SMART ENTRY AND START SYSTEM Click here

  18. CHECK ENGINE STOP AND START ECU (STA AND STA2 SIGNAL)


    1. Connect an oscilloscope to the STA, STA2 and DGND terminals of the engine stop and start ECU connector.

    2. B006Q1ME38
      *1 (ST NO. 1 Relay)
      *2 (ST NO. 2 Relay)
      *3 0.03 to 0.06 seconds

      Check the waveform immediately after turning the engine switch on (START).

      Item Condition
      Tester Connection

      A60-21 (STA) - A60-6 (DGND)

      A60-23 (STA2) - A60-6 (DGND)
      Condition Engine started by engine switch operation
      Result
      Result Proceed to
      Delay between ST NO. 1 relay turning on and ST NO. 2 relay turning on: between 0.03 and 0.06 seconds A
      Delay between ST NO. 1 relay turning on and ST NO. 2 relay turning on: not between 0.03 and 0.06 seconds B
      ST NO. 1 relay turns on and ST NO. 2 relay does not turn on C
      ST NO. 1 relay and ST NO. 2 relay do not turn on D

      Note

      After replacing the engine stop and start ECU, make sure that the drive plate and ring gear sub-assembly and starter pinion gear are not excessively worn. A malfunction in the delay circuit may cause the drive plate and ring gear sub-assembly or starter pinion gear to be worn or damaged.


    B

    REPLACE ENGINE STOP AND START ECU Click here

    C

    CHECK HARNESS AND CONNECTOR (BIN1 AND BIN2 TERMINALS POWER SOURCE CIRCUIT) Click here

    D

    GO TO STEP 22 Click here

    A

  19. INSPECT RELAY (ST NO. 1 RELAY AND ST NO. 2 RELAY)


    1. Inspect the ST NO. 1 relay.

      Click here

    2. Inspect the ST NO. 2 relay.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RELAY (ST NO. 1 RELAY OR ST NO. 2 RELAY)

    OK

  20. CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY AND ST NO. 2 RELAY - BATTERY)

    B006NH9C05
    *1 No. 1 Engine Room Relay Block
    *2 ST NO. 1 relay
    *3 ST NO. 2 Relay

    1. Remove the ST NO. 1 relay and ST NO. 2 relay from the No. 1 engine room relay block.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      5 (ST NO. 1 relay) - Body ground Always 9.5 to 14 V
      5 (ST NO. 2 relay) - Body ground Always 9.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  21. CHECK HARNESS AND CONNECTOR (ST RELAY AND ST NO. 2 RELAY - STARTER ASSEMBLY)


    1. Remove the ST NO. 1 relay and ST NO. 2 relay from the No. 1 engine room relay block.

    2. Disconnect the starter assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 (ST NO. 1 relay) - D7-2 (SL1) Always Below 1 Ω
      3 (ST NO. 2 relay) - D7-1 (SL2) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  22. CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY AND ST NO. 2 RELAY - BODY GROUND)


    1. Remove the ST NO. 1 relay and ST NO. 2 relay from the No. 1 engine room relay block.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (ST NO. 1 relay) - Body ground Always Below 1 Ω
      2 (ST NO. 2 relay) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  23. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ST NO. 1 RELAY)


    1. Disconnect the engine stop and start ECU connector.

    2. Remove the ST NO. 1 relay from the No. 1 engine room relay block.

    3. Disconnect the certification ECU (smart key ECU assembly) connector.

    4. Disconnect the park/neutral position switch assembly connector.

    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A60-21 (STA) - 1 (ST NO. 1 relay) Always Below 1 Ω
      A60-21 (STA) or 1 (ST NO. 1 relay) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  24. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ST NO. 2 RELAY)


    1. Disconnect the engine stop and start ECU connector.

    2. Remove the ST NO. 2 relay from the No. 1 engine room relay block.

    3. Disconnect the ECM connector.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A60-23 (STA2) - 1 (ST NO. 2 relay) Always Below 1 Ω
      A60-23 (STA2) or 1 (ST NO. 2 relay) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  25. CHECK STARTER SIGNAL (OUTPUT WAVEFORM)


    1. Connect the positive (+) lead of an oscilloscope to the positive (+) battery terminal and the negative (-) lead to the negative (-) battery terminal.

    2. While cranking the engine, count the number of times the waveform drops.

      B006QKNE05
      Standard
      Waveform drops 2 times
      Result
      Number of Times Waveform Dropped Proceed to
      0 times A
      2 times B

    B

    INSPECT STARTER ASSEMBLY Click here

    A

  26. INSPECT STARTER INRUSH CURRENT REDUCTION RELAY

    B006RGVC02
    *1 Starter Assembly
    *a B Terminal
    *b M Terminal

    1. Disconnect the cable from the negative (-) battery terminal.

    2. Disconnect terminals B and M of the starter inrush current reduction relay.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      B Terminal - M Terminal Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    INSPECT STARTER ASSEMBLY (M TERMINAL) Click here

    OK

  27. INSPECT STARTER ASSEMBLY (WIRE HARNESS)

    B006N05C02
    *1 Starter Assembly
    *a Inspect Part
    *b B Terminal
    *c C Terminal

    1. Disconnect the cable from the negative (-) battery terminal.

    2. Disconnect terminal B of the starter inrush current reduction relay.

    3. Disconnect terminal C of the starter assembly.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C Terminal - B Terminal Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STARTER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE WIRE HARNESS

  28. INSPECT STARTER ASSEMBLY (M TERMINAL)

    B006LWJC02
    *1 Starter Assembly
    *a Inspect Part
    *b M Terminal

    1. Disconnect the cable from the negative (-) battery terminal.

    2. Disconnect terminal M of the starter inrush current reduction relay.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      M Terminal - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STARTER INRUSH CURRENT REDUCTION RELAY Click here

    NG

    REPLACE STARTER ASSEMBLY Click here

  29. INSPECT STARTER ASSEMBLY


    1. Inspect the starter assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPLACE STARTER ASSEMBLY Click here

  30. CHECK HARNESS AND CONNECTOR (BIN1 AND BIN2 TERMINALS POWER SOURCE CIRCUIT)

    B006MQSC41
    *a

    Front view of wire harness connector

    (to Engine Stop and Start ECU)

    1. Disconnect the engine stop and start ECU connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      A59-1 (BIN2) - Body ground Always 9.5 to 14 V
      A59-3 (BIN1) - Body ground Always 9.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE STOP AND START ECU - BATTERY)

    OK

  31. CHECK HARNESS AND CONNECTOR (IG1 TERMINAL POWER SOURCE CIRCUIT)

    B006PJRC65
    *a

    Front view of wire harness connector

    (to Engine Stop and Start ECU)

    1. Disconnect the engine stop and start ECU connector.

    2. Turn the engine switch on (IG).

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      G50-21 (IG1) - Body ground Engine switch on (IG) 9.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - JUNCTION BLOCK ASSEMBLY LH) Click here

    OK

  32. CHECK HARNESS AND CONNECTOR (+B TERMINALS POWER SOURCE CIRCUIT)

    B006LOEC34
    *a

    Front view of wire harness connector

    (to Engine Stop and Start ECU)

    1. Disconnect the engine stop and start ECU connectors.

    2. Turn the engine switch on (IG).

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      A60-1 (+B) - Body ground Engine switch on (IG) 9.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE STOP AND START ECU - NO. 1 INTEGRATION RELAY)

    OK

  33. CHECK HARNESS AND CONNECTOR (IG2 TERMINALS POWER SOURCE CIRCUIT)

    B006PJRC77
    *a

    Front view of wire harness connector

    (to Engine Stop and Start ECU)

    1. Disconnect the engine stop and start ECU connectors.

    2. Turn the engine switch on (IG).

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      G50-18 (IG2) - Body ground Engine switch on (IG) 9.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - JUNCTION BLOCK ASSEMBLY LH) Click here

    OK

  34. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - BODY GROUND)


    1. Disconnect the engine stop and start ECU connectors.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A59-2 (GND2) - Body ground Always Below 1 Ω
      A59-8 (GND1) - Body ground Always Below 1 Ω
      A60-6 (DGND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ENGINE STOP AND START ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  35. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - JUNCTION BLOCK ASSEMBLY LH)


    1. Disconnect the engine stop and start ECU connector.

    2. Disconnect the junction block assembly LH connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      G50-18 (IG2) - 4A-50 Always Below 1 Ω
      G50-18 (IG2) or 4A-50 - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  36. INSPECT JUNCTION BLOCK ASSEMBLY LH


    1. Remove the junction block assembly LH.

      Click here

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      4F-5 - 4A-50 Always Below 1 Ω
      4F-5 or 4A-50 - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE JUNCTION BLOCK ASSEMBLY LH Click here

    OK

  37. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - JUNCTION BLOCK ASSEMBLY LH)


    1. Disconnect the No. 1 integration relay connector.

    2. Disconnect the junction block assembly LH connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      1D-1 - 4F-5 Always Below 1 Ω
      1D-1 or 4F-5 - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO.1 INTEGRATION RELAY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  38. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - JUNCTION BLOCK ASSEMBLY LH)


    1. Disconnect the engine stop and start ECU connector.

    2. Disconnect the junction block assembly LH connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      G50-21 (IG1) - 4A-51 Always Below 1 Ω
      G50-21 (IG1) or 4A-51 - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE JUNCTION BLOCK ASSEMBLY LH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR