LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - Diagnostic Codes - (Hybrid) (2 Of 8) >> Hybrid Control System >> DTC P314A-828: Inverter Coolant Pump Speed Signal [10/2014 - 10/2015] >> Procedure

DTC P314A-828: Inverter Coolant Pump Speed Signal [10/2014 - 10/2015]: Procedure

  1. CLEAR DTC 

    Refer to PROCEDURE - Step 4

    NEXT 

    See step  2

  2. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE 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 Water Pump.
    4. Perform the Activate the Water Pump Active Test.
    5. Touch the inverter water pump assembly and check that it is operating (vibrating).

      OK

      The inverter water pump is operating (vibrating).

    6. Turn the power switch off.

    NG 

    See step  9

    OK 

    See step  3

  3. CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR) 

    Refer to PROCEDURE - Step 3

    NG 

    CONNECT SECURELY 

    OK 

    See step  4

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

    Refer to PROCEDURE - Step 8

    NG 

    CONNECT SECURELY 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INVERTER WATER PUMP ASSEMBLY) 
    1. Disconnect the A53 power management control ECU connector.
    2. Disconnect the A58 inverter water pump assembly connector.
    3. Measure the resistance according to the value (s) in the table below.
      GTY556086Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Power Management Control ECU)      		 *b Front view of wire harness connector
      (to Inverter Water Pump Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A53-14 (NIWP) - A58-2 (NWP) Power switch off Below 1 Ω
      A53-14 (NIWP) or A58-2 (NWP) -Body ground and other terminals Power switch off 10 kΩ or higher
    4. Reconnect the A58 inverter water pump assembly connector.
    5. Reconnect the A53 power management control ECU connector.

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK 

    See step  6

  6. CHECK POWER MANAGEMENT CONTROL ECU 
    1. Disconnect the A58 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.
      GTY558621Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Power Management Control ECU)

      Standard Voltage

      Tester Connection Condition Specified Condition
      A53-14 (NIWP) - D104-6 (E1) Power switch on (IG) 11 to 14 V
    4. Turn the power switch off.
    5. Reconnect the A58 inverter water pump assembly connector.

    NG 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to COMPONENTS [10/2014 - 10/2015] )

    OK 

    See step  7

  7. CLEAR DTC 

    Refer to PROCEDURE - Step 4

    NEXT 

    See step  8

  8. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE 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 Water Pump.
    4. Perform the "Activate the Water Pump" Active Test.
    5. Connect an oscilloscope between the power management control ECU terminals specified in the table below, and measure the waveform.
      GTY604885Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Power Management Control ECU)
      Item Content
      Terminal A53-14 (NIWP) - D104-6 (E1)
      Equipment Setting 5 V/DIV., 100 ms./DIV.
      Condition Power switch on (IG), during Active Test

      OK

      The duration of wavelength A is 300 msec or less.

    6. Turn the power switch off.

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to COMPONENTS [10/2014 - 10/2015] )

    NG 

    REPLACE INVERTER WATER PUMP ASSEMBLY 

    (Refer to COMPONENTS [10/2014 - ] )

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

    Refer to PROCEDURE - Step 8

    NG 

    CONNECT SECURELY 

    OK 

    See step  10

  10. CHECK INSTALLATION CONDITION (INV W/PMP RELAY) 
    1. Check installation condition of the INV W/PMP relay.
      GTY454036Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block
      *2 INV W/PMP Relay

      OK

      INV W/PMP relay is installed correctly.

    NG 

    See step  34

    OK 

    See step  11

  11. CHECK HARNESS AND CONNECTOR (IGCT RELAY - INV W/PMP RELAY) 
    1. Remove the IGCT relay and INV W/PMP relay from the No. 2 engine room relay block.
    2. Measure the resistance according to the value (s) in the table below.
      GTY433651Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block
      *2 INV W/PMP Relay
      *3 IGCT Relay

      Standard Resistance

      Tester Connection Condition Specified Condition
      5 (IGCT 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.

      • No. 2 Engine Room Relay Block

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

      • INV W/PMP RLY Fuse

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

        GTY378730Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Example
        *b Shake Slightly
        *c Vibrate Slightly
    3. Install the IGCT relay and INV W/PMP relay.

    NG 

    See step  29

    OK 

    See step  12

  12. INSPECT RELAY (INV W/PMP) 
    1. Remove the INV W/PMP relay from the No. 2 engine room relay block.
      GTY454036Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block
      *2 INV W/PMP Relay
    2. Measure the resistance according to the value (s) in the table below.
      GTY554483Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 INV W/PMP Relay

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Auxiliary battery voltage is not applied between terminals 1 and 2 10 kΩ or higher
      Auxiliary battery voltage is applied between terminals 1 and 2 Below 1 Ω
    3. Install the INV W/PMP relay.

    NG 

    See step  23

    OK 

    See step  13

  13. CHECK HARNESS AND CONNECTOR (INVERTER WATER PUMP ASSEMBLY - BODY GROUND) 
    1. Disconnect the A58 inverter water pump assembly connector.
    2. Measure the voltage according to the value (s) in the table below.
      GTY544524Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Inverter Water Pump Assembly)

      Standard Voltage

      Tester Connection Condition Specified Condition
      A58-4 (+BWP) - Body ground Power switch on (IG) 11 to 14 V
      NOTE:
      • Turning the power switch on (IG) with the power management control ECU connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this 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.

      • No. 2 Engine Room Relay Block

        Apply slight vibration with a finger to the No. 2 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.

        GTY378730Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Example
        *b Shake Slightly
        *c Vibrate Slightly
    3. Reconnect the A58 inverter water pump assembly connector.

    NG 

    See step  15

    OK 

    See step  14

  14. CHECK HARNESS AND CONNECTOR (INVERTER WATER PUMP ASSEMBLY - BODY GROUND) 
    1. Disconnect the A58 inverter water pump assembly connector.
    2. Measure the resistance according to the value (s) in the table below.
      GTY548548Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Inverter Water Pump Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A58-1 (GND) - Body ground Power switch off Below 1 Ω
    3. Reconnect the A58 inverter water pump assembly connector.

    OK 

    REPLACE INVERTER WATER PUMP ASSEMBLY 

    (Refer to COMPONENTS [10/2014 - ] )

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  15. CHECK INSTALLATION CONDITION (INV W/PMP FUSE) 
    1. Check installation condition of the INV W/PMP fuse.
      GTY545664Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block
      *2 INV W/PMP Fuse

      OK

      INV W/PMP fuse is installed correctly.

    NG 

    CONNECT SECURELY 

    OK 

    See step  16

  16. INSPECT RELAY (INV W/PMP) 
    1. Remove the INV W/PMP relay from the No. 2 engine room relay block.
      GTY454036Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block
      *2 INV W/PMP Relay
    2. Measure the resistance according to the value (s) in the table below.
      GTY554482Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 INV W/PMP Relay

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Auxiliary battery voltage is not applied between terminals 1 and 2 10 kΩ or higher
      Auxiliary battery voltage is applied between terminals 1 and 2 Below 1 Ω
    3. Install the INV W/PMP relay.

    NG 

    See step  20

    OK 

    See step  17

  17. CHECK HARNESS AND CONNECTOR (INVERTER WATER PUMP ASSEMBLY - NO. 2 ENGINE ROOM RELAY BLOCK) 
    1. Remove the INV W/PMP relay from the No. 2 engine room relay block.
    2. Disconnect the A58 inverter water pump assembly connector.
    3. Measure the resistance according to the value (s) in the table below.
      GTY544563Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block *2 INV W/PMP Relay
      *a Front view of wire harness connector
      (to Inverter Water Pump Assembly)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      A58-4 (+BWP) - 3 (INV W/PMP relay) Power switch off Below 1 Ω
      A58-4 (+BWP) or 3 (INV W/PMP relay) - 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.

    4. Install the INV W/PMP relay.
    5. Reconnect the A58 inverter water pump assembly connector.

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK 

    See step  18

  18. INSPECT FUSE (INV W/PMP) 
    1. Remove the INV W/PMP fuse from the No. 2 engine room relay block.
      GTY323225Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block
      *2 INV W/PMP Fuse
    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.

    OK 

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

    NG 

    See step  19

  19. REPLACE INVERTER WATER PUMP ASSEMBLY 

    (Refer to COMPONENTS [10/2014 - ] )

    NEXT 

    REPLACE FUSE (INV W/PMP) 

  20. 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.

    NG 

    See step  24

    OK 

    See step  21

  21. CHECK FUSE (INV W/PMP RLY) 
    1. Remove the INV W/PMP RLY fuse from the No. 2 engine room relay block.
      GTY322404Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block
      *2 INV W/PMP RLY Fuse
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      INV W/PMP RLY fuse Always Below 1 Ω
    3. Install the INV W/PMP RLY fuse.

    OK 

    REPLACE RELAY (INV W/PMP) 

    NG 

    See step  22

  22. REPLACE RELAY (INV W/PMP) 

    NEXT 

    REPLACE FUSE (INV W/PMP RLY) 

  23. 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.

    OK 

    REPLACE RELAY (INV W/PMP) 

    NG 

    See step  26

  24. CHECK FUSE (INV W/PMP RLY) 
    1. Remove the INV W/PMP RLY fuse from the No. 2 engine room relay block.
      GTY322404Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block
      *2 INV W/PMP RLY Fuse
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      INV W/PMP RLY fuse Always Below 1 Ω
    3. Install the INV W/PMP RLY fuse.

    NG 

    See step  27

    OK 

    See step  25

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

    NEXT 

    REPLACE RELAY (INV W/PMP) 

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

    NEXT 

    REPLACE RELAY (INV W/PMP) 

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

    NEXT 

    See step  28

  28. REPLACE FUSE (INV W/PMP RLY) 

    NEXT 

    REPLACE RELAY (INV W/PMP) 

  29. CHECK INSTALLATION CONDITION (INV W/PMP RLY FUSE) 
    1. Check installation condition of the INV W/PMP RLY fuse.
      GTY322404Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block
      *2 INV W/PMP RLY Fuse

      OK

      INV W/PMP RLY fuse is installed correctly.

    NG 

    See step  33

    OK 

    See step  30

  30. CHECK FUSE (INV W/PMP RLY) 
    1. Remove the INV W/PMP RLY fuse from the No. 2 engine room relay block.
      GTY322404Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block
      *2 INV W/PMP RLY Fuse
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      INV W/PMP RLY fuse Always Below 1 Ω
    3. Install the INV W/PMP RLY fuse.

    OK 

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

    NG 

    See step  31

  31. CHECK FUSE HOLDER TERMINAL (INV W/PMP RLY FUSE) 
    1. Check the terminals of the INV W/PMP RLY fuse holder.

      OK

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

    OK 

    REPLACE FUSE (INV W/PMP RLY) 

    NG 

    See step  32

  32. REPAIR OR REPLACE HARNESS OR CONNECTOR (INV W/PMP RLY FUSE HOLDER TERMINAL) 

    NEXT 

    REPLACE FUSE (INV W/PMP RLY) 

  33. INSPECT RELAY (INV W/PMP) 
    1. Remove the INV W/PMP relay from the No. 2 engine room relay block.
      GTY454036Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block
      *2 INV W/PMP Relay
    2. Measure the resistance according to the value (s) in the table below.
      GTY601050Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 INV W/PMP Relay

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Auxiliary battery voltage is not applied between terminals 1 and 2 10 kΩ or higher
      Auxiliary battery voltage is applied between terminals 1 and 2 Below 1 Ω
    3. Install the INV W/PMP relay.

    OK 

    CONNECT SECURELY (INV W/PMP RLY FUSE) 

    NG 

    See step  35

  34. INSPECT RELAY (INV W/PMP) 
    1. Remove the INV W/PMP relay from the No. 2 engine room relay block.
      GTY454036Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block
      *2 INV W/PMP Relay
    2. Measure the resistance according to the value (s) in the table below.
      GTY601048Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 INV W/PMP Relay

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Auxiliary battery voltage is not applied between terminals 1 and 2 10 kΩ or higher
      Auxiliary battery voltage is applied between terminals 1 and 2 Below 1 Ω
    3. Install the INV W/PMP relay.

    OK 

    CONNECT SECURELY (INV W/PMP RELAY) 

    NG 

    See step  36

  35. REPLACE RELAY (INV W/PMP) 

    NEXT 

    CONNECT SECURELY (INV W/PMP RLY FUSE) 

  36. REPLACE RELAY (INV W/PMP) 

    NEXT 

    CONNECT SECURELY (INV W/PMP RELAY) 

scientia non olet · About LEMON Manuals