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Home >> Lexus >> 2022 >> LS 500h RWD >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (W/ Advanced Park) - Diagnostic Codes (5 Of 5) & Circuit Tests (1 Of 2) >> HYBRID CONTROL SYSTEM (w/ Advanced Park) >> DTC P314A-31: Motor Electronics Coolant Pump "A" No Signal [11/2021 - 10/2023] >> Procedure

DTC P314A-31: Motor Electronics Coolant Pump "A" No Signal [11/2021 - 10/2023]: Procedure

  1. CLEAR DTC 

    Refer to PROCEDURE - Step 3

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  2

  2. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE INVERTER WATER PUMP) 
    NOTE:
    • Make sure that the HV coolant level is above the low line of the inverter reserve tank.
    • Be sure to perform the inspection with the auxiliary battery voltage at 11 V or more.

    HINT: 

    • When the auxiliary battery voltage is low, the inverter water pump assembly may not operate.
    • When the inverter water pump assembly signal line (SWP - IWP) is open or its connection is faulty, the inverter water pump assembly is operated forcibly.
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Active Test / Activate the Inverter Water Pump.
    4. Perform the "Activate the Inverter Water Pump" Active Test.

      Powertrain > Hybrid Control > Active Test 

      Tester Display
      Activate the Inverter Water Pump
    5. Touch the inverter water pump assembly and check that it is operating (vibrating).

      OK

      The inverter water pump is operating (vibrating).

      HINT: 

      Perform the Active Test with the inverter coolant temperature between -15 and 65°C (5 to 149°F).

    6. Turn the power switch off.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  9

    Result: 

    OK 

    See step  3

  3. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR) 

    Refer to PROCEDURE - Step 1

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    CONNECT SECURELY 

    Result: 

    OK 

    See step  4

  4. CHECK CONNECTOR CONNECTION CONDITION (INVERTER WATER PUMP ASSEMBLY CONNECTOR) 

    Refer to PROCEDURE - Step 9

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    CONNECT SECURELY 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - INVERTER WATER PUMP ASSEMBLY) 
    1. Disconnect the A107 hybrid vehicle control ECU assembly connector.
    2. Disconnect the A84 inverter water pump assembly connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY1086673Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Hybrid Vehicle Control ECU Assembly)
      *b Front view of wire harness connector
      (to Inverter Water Pump Assembly)

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      A107-32 (NIWP) - A84-2 (NWP) Power switch off Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      A107-32 (NIWP) or A84-2 (NWP) -Body ground and other terminals Power switch off 10 kΩ or higher

      HINT: 

      Check the condition (looseness, deterioration, etc.) of the wire to body ground for the inverter water pump assembly.

    4. Reconnect the A84 inverter water pump assembly connector.
    5. Reconnect the A107 hybrid vehicle control ECU assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

  6. CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY 
    1. Disconnect the A84 inverter water pump assembly connector.
    2. Turn the power switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.
      GTY1084909Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Hybrid Vehicle Control ECU Assembly)      		 - -

      Standard Voltage

      Tester Connection Condition Specified Condition
      A107-32 (NIWP) - G166-15 (E1) Power switch on (IG) 11 to 14 V
    4. Turn the power switch off.
    5. Reconnect the A84 inverter water pump assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [11/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

    Result: 

    OK 

    See step  7

  7. CLEAR DTC 

    Refer to PROCEDURE - Step 3

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  8

  8. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE INVERTER WATER PUMP) 
    NOTE:

    Be sure to perform the inspection with the auxiliary battery voltage at 11 V or more.

    HINT: 

    When the auxiliary battery voltage is low, the inverter water pump assembly may not operate.

    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Active Test / Activate the Inverter Water Pump.
    4. Perform the "Activate the Inverter Water Pump" Active Test.

      Powertrain > Hybrid Control > Active Test 

      Tester Display
      Activate the Inverter Water Pump
    5. Connect an oscilloscope between the hybrid vehicle control ECU assembly terminals specified in the table below, and measure the waveform.
      GTY1086196Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Hybrid Vehicle Control ECU Assembly)      		 - -
      Tester Connection Condition Equipment Setting
      A107-32 (NIWP) - G166-15 (E1) Power switch on (IG), during Active Test 5 V/DIV., 5 ms./DIV.

      OK

      The duration of wavelength is 13 msec or less.

    6. Turn the power switch off.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [11/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

    Result: 

    NG 

    See step  17

  9. CHECK CONNECTOR CONNECTION CONDITION (INVERTER WATER PUMP ASSEMBLY CONNECTOR) 

    Refer to PROCEDURE - Step 9

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    CONNECT SECURELY (INVERTER WATER PUMP ASSEMBLY CONNECTOR) 

    Result: 

    OK 

    See step  10

  10. CHECK INSTALLATION CONDITION (INV W/PMP RELAY) 
    1. Check installation condition of the INV W/PMP relay.
      GTY796765Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 Engine Room Relay Block
      *2 INV W/PMP Relay

      OK

      INV W/PMP relay is installed correctly.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  19

    Result: 

    OK 

    See step  11

  11. CHECK HARNESS AND CONNECTOR (IGCT NO. 2 RELAY - INV W/PMP RELAY) 
    1. Remove the IGCT NO. 2 relay from the No. 2 luggage room relay block.
      GTY1086765Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Luggage Room Relay Block
      *2 IGCT NO. 2 Relay
    2. Remove the INV W/PMP relay from the No. 1 engine room relay block
      GTY805014Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 Engine Room Relay Block
      *2 INV W/PMP Relay
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      5 (IGCT NO. 2 relay) - 1 (INV W/PMP relay) Power switch off Below 1 Ω
      NOTE:

      Do not apply excessive force when using the probes of the tester to perform the inspection. If excessive force is used, the terminals will be damaged.

      HINT: 

      • Connectors

        Slightly shake the connector vertically and horizontally.

      • Wire Harness

        Slightly shake the wire harness vertically and horizontally.

        The connector joint and fulcrum of the vibration are the major areas that should be checked thoroughly.

      • No. 2 Luggage Room Relay Block

        Apply slight vibration with a finger to the No. 2 luggage room relay block and check whether a malfunction occurs.

      • No. 1 Engine Room Relay Block

        Apply slight vibration with a finger to the No. 1 engine room relay block and check whether a malfunction occurs.

      • IGCT NO. 4 fuse

        Apply slight vibration with a finger to the IGCT NO. 4 fuse and check whether a malfunction occurs.

      GTY810642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Example
      *b Shake Slightly
      *c Vibrate Slightly
    4. Install the IGCT NO. 2 relay and INV W/PMP relay.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  20

    Result: 

    OK 

    See step  12

  12. INSPECT RELAY (INV W/PMP) 
    1. Remove the INV W/PMP relay from the No. 1 engine room relay block.
      GTY796765Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 Engine Room Relay Block
      *2 INV W/PMP Relay
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Auxiliary battery voltage not applied between terminals 1 and 2 10 kΩ or higher
      Auxiliary battery voltage applied between terminals 1 and 2 Below 1 Ω
      GTY807032Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 INV W/PMP Relay
    3. Install the INV W/PMP relay.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  22

    Result: 

    OK 

    See step  13

  13. CHECK HARNESS AND CONNECTOR (INVERTER WATER PUMP ASSEMBLY - BODY GROUND) 
    GTY786140Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Front view of wire harness connector
    (to Inverter Water Pump Assembly)
    GTY810642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Example
    *b Shake Slightly
    *c Vibrate Slightly
    1. Disconnect the A84 inverter water pump assembly connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      A84-4 (+BWP) - Body ground Power switch on (IG) 11 to 14 V
      NOTE:
      • If the power switch is turned on (IG) with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.
      • Do not apply excessive force when using the probes of the tester to perform the inspection. If excessive force is used, the terminals will be damaged.

      HINT: 

      • Connectors

        Slightly shake the connector vertically and horizontally.

      • Wire Harness

        Slightly shake the wire harness vertically and horizontally.

        The connector joint and fulcrum of the vibration are the major areas that should be checked thoroughly.

      • No. 1 Engine Room Relay Block

        Apply slight vibration with a finger to the No. 1 engine room relay block and check whether a malfunction occurs.

      • INV W/PMP fuse

        Apply slight vibration with a finger to the INV W/PMP fuse and check whether a malfunction occurs.

      • INV W/PMP Relay

        Apply slight vibration with a finger to the INV W/PMP relay and check whether a malfunction occurs.

    3. Reconnect the A84 inverter water pump assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  23

    Result: 

    OK 

    See step  14

  14. CHECK HARNESS AND CONNECTOR (INVERTER WATER PUMP ASSEMBLY - BODY GROUND) 
    1. Disconnect the A84 inverter water pump assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY825981Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Inverter Water Pump Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A84-1 (GND) - Body ground Power switch off Below 1 Ω
    3. Reconnect the A84 inverter water pump assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  15

  15. REPLACE INVERTER WATER PUMP ASSEMBLY 
    1. Replace inverter water pump assembly.

      Refer to REMOVAL [10/2017 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  16

  16. ADD HV COOLANT AND PERFORM AIR BLEEDING 
    1. After replacing the inverter water pump with motor assembly, add HV coolant and perform air bleeding.

      Refer to REPLACEMENT [10/2017 - 10/2023]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    END 

  17. REPLACE INVERTER WATER PUMP ASSEMBLY 
    1. Replace inverter water pump assembly.

      Refer to REMOVAL [10/2017 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  18

  18. ADD HV COOLANT AND PERFORM AIR BLEEDING 
    1. After replacing the inverter water pump with motor assembly, add HV coolant and perform air bleeding.

      Refer to REPLACEMENT [10/2017 - 10/2023]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    END 

  19. INSPECT RELAY (INV W/PMP) 
    1. Remove the INV W/PMP relay from the No. 1 engine room relay block.
      GTY796765Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 Engine Room Relay Block
      *2 INV W/PMP Relay
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Auxiliary battery voltage not applied between terminals 1 and 2 10 kΩ or higher
      Auxiliary battery voltage applied between terminals 1 and 2 Below 1 Ω
      GTY807032Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 INV W/PMP Relay
    3. Install the INV W/PMP relay.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    CONNECT SECURELY (INV W/PMP RELAY) 

    Result: 

    NG 

    REPLACE RELAY (INV W/PMP) 

  20. CHECK INSTALLATION CONDITION (IGCT NO. 4 FUSE) 
    1. Check installation condition of the IGCT NO. 4 fuse.
      GTY791194Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Luggage Room Relay Block
      *2 IGCT NO. 4 Fuse

      OK

      IGCT NO. 4 fuse is installed correctly.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  27

    Result: 

    OK 

    See step  21

  21. CHECK FUSE (IGCT NO. 4) 
    1. Remove the IGCT NO. 4 fuse from the No. 2 luggage room relay block.
      GTY791194Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Luggage Room Relay Block
      *2 IGCT NO. 4 Fuse
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      IGCT NO. 4 fuse Always Below 1 Ω
    3. Install the IGCT NO. 4 fuse.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IGCT NO. 4 FUSE HOLDER TERMINAL) 

    Result: 

    NG 

    See step  28

  22. CHECK RELAY HOLDER TERMINAL (INV W/PMP RELAY) 
    1. Check the terminals of the INV W/PMP relay holder.

      OK

      The terminals of the INV W/PMP relay holder are not bent, loose or corroded.

      GTY796765Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 Engine Room Relay Block
      *2 INV W/PMP Relay

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE RELAY (INV W/PMP) 

    Result: 

    NG 

    See step  29

  23. CHECK INSTALLATION CONDITION (INV W/PMP FUSE) 
    1. Check installation condition of the INV W/PMP fuse.

      OK

      INV W/PMP fuse is installed correctly.

      GTY811514Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 Engine Room Relay Block
      *2 INV W/PMP Fuse

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT SECURELY (INV W/PMP FUSE) 

    Result: 

    OK 

    See step  24

  24. INSPECT RELAY (INV W/PMP) 
    1. Remove the INV W/PMP relay from the No. 1 engine room relay block.
      GTY796765Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 Engine Room Relay Block
      *2 INV W/PMP Relay
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Auxiliary battery voltage not applied between terminals 1 and 2 10 kΩ or higher
      Auxiliary battery voltage applied between terminals 1 and 2 Below 1 Ω
      GTY807032Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 INV W/PMP Relay
    3. Install the INV W/PMP relay.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  30

    Result: 

    OK 

    See step  25

  25. CHECK HARNESS AND CONNECTOR (INVERTER WATER PUMP ASSEMBLY CIRCUIT) 
    1. Remove the INV W/PMP fuse from the No. 1 engine room relay block.
    2. Remove the INV W/PMP relay from the No. 1 engine room relay block.
    3. Disconnect the A84 inverter water pump assembly connector.
    4. Measure the resistance according to the value(s) in the table below.
      GTY823215Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 Engine Room Relay Block *2 INV W/PMP Fuse
      *3 INV W/PMP Relay - -
      *a Front view of wire harness connector
      (to Inverter Water Pump Assembly)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      A84-4 (+BWP) - 3 (INV W/PMP relay) Power switch off Below 1 Ω
      2 (INV W/PMP fuse) or A84-4 (+BWP) - Body ground and other terminals Power switch off 10 kΩ or higher
      NOTE:

      Do not apply excessive force when using the probes of the tester to perform the inspection. If excessive force is used, the terminals will be damaged.

    5. Reconnect the A84 inverter water pump assembly connector.
    6. Install the INV W/PMP relay.
    7. Install the INV W/PMP fuse.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  26

  26. CHECK FUSE (INV W/PMP) 
    GTY811514Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 No. 1 Engine Room Relay Block
    *2 INV W/PMP Fuse
    1. Remove the INV W/PMP fuse 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
      INV W/PMP fuse Always Below 1 Ω
    3. Install the INV W/PMP fuse.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (INV W/PMP FUSE HOLDER TERMINAL OR INV W/PMP RELAY HOLDER TERMINAL) 

    Result: 

    NG 

    See step  32

  27. INSPECT RELAY (INV W/PMP) 
    1. Remove the INV W/PMP relay from the No. 1 engine room relay block.
      GTY796765Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 Engine Room Relay Block
      *2 INV W/PMP Relay
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Auxiliary battery voltage not applied between terminals 1 and 2 10 kΩ or higher
      Auxiliary battery voltage applied between terminals 1 and 2 Below 1 Ω
      GTY807032Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 INV W/PMP Relay
    3. Install the INV W/PMP relay.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    CONNECT SECURELY (IGCT NO. 4 FUSE) 

    Result: 

    NG 

    See step  34

  28. CHECK FUSE HOLDER TERMINAL (IGCT NO. 4) 
    1. Check the terminals of the IGCT NO. 4 fuse holder.

      OK

      The terminals of the IGCT NO. 4 fuse holder are not bent, loose or corroded.

      GTY791194Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Luggage Room Relay Block
      *2 IGCT NO. 4 Fuse

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE FUSE (IGCT NO. 4) 

    Result: 

    NG 

    See step  35

  29. REPAIR OR REPLACE HARNESS OR CONNECTOR (INV W/PMP RELAY HOLDER TERMINAL) 
    1. Repair or replace the terminals of the INV W/PMP relay holder.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    REPLACE RELAY (INV W/PMP) 

  30. CHECK RELAY HOLDER TERMINAL (INV W/PMP RELAY) 
    1. Check the terminals of the INV W/PMP relay holder.

      OK

      The terminals of the INV W/PMP relay holder are not bent, loose or corroded.

      GTY796765Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 Engine Room Relay Block
      *2 INV W/PMP Relay

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  36

    Result: 

    OK 

    See step  31

  31. CHECK FUSE (IGCT NO. 4) 
    GTY791193Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 No. 2 Luggage Room Relay Block
    *2 IGCT NO. 4 Fuse
    1. Remove the IGCT NO. 4 fuse from the No. 2 luggage room relay block.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      IGCT NO. 4 fuse Always Below 1 Ω
    3. Install the IGCT NO. 4 fuse.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE RELAY (INV W/PMP) 

    Result: 

    NG 

    See step  38

  32. REPLACE INVERTER WATER PUMP ASSEMBLY 
    1. Replace inverter water pump assembly.

      Refer to REMOVAL [10/2017 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  33

  33. ADD HV COOLANT AND PERFORM AIR BLEEDING 
    1. After replacing the inverter water pump with motor assembly, add HV coolant and perform air bleeding.

      Refer to REPLACEMENT [10/2017 - 10/2023]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    REPLACE FUSE (INV W/PMP) 

  34. REPLACE RELAY (INV W/PMP) 
    1. Replace INV W/PMP relay.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    CONNECT SECURELY (IGCT NO. 4 FUSE) 

  35. REPAIR OR REPLACE HARNESS OR CONNECTOR (IGCT NO. 4 FUSE HOLDER TERMINAL) 
    1. Repair or replace the terminals of the IGCT NO. 4 fuse holder.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    REPLACE FUSE (IGCT NO. 4) 

  36. CHECK FUSE (IGCT NO. 4) 
    GTY791193Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 No. 2 Luggage Room Relay Block
    *2 IGCT NO. 4 Fuse
    1. Remove the IGCT NO. 4 fuse from the No. 2 luggage room relay block.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      IGCT NO. 4 fuse Always Below 1 Ω
    3. Install the IGCT NO. 4 fuse.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  39

    Result: 

    OK 

    See step  37

  37. REPAIR OR REPLACE HARNESS OR CONNECTOR (INV W/PMP RELAY HOLDER TERMINAL) 
    1. Repair or replace the terminals of the INV W/PMP relay holder.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    REPLACE RELAY (INV W/PMP) 

  38. REPLACE RELAY (INV W/PMP) 
    1. Replace INV W/PMP relay.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    REPLACE FUSE (IGCT NO. 4) 

  39. REPAIR OR REPLACE HARNESS OR CONNECTOR (INV W/PMP RELAY HOLDER TERMINAL) 
    1. Repair or replace the terminals of the INV W/PMP relay holder.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  40

  40. REPLACE RELAY (INV W/PMP) 
    1. Replace INV W/PMP relay.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    REPLACE FUSE (IGCT NO. 4) 

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