HYBRID CONTROL SYSTEM, Diagnostic DTC:P0C2E-859

DTC Code DTC Name
P0C2E-859 Auxiliary Transmission Fluid Pump Control Module Feedback Signal High

DESCRIPTION

Refer to the description for DTC P0C29-865 Click here.

DTC No. INF Code DTC Detection Condition Trouble Area
P0C2E 859 Open or short to +B in the TPST (status signal line) circuit

  • Power management control ECU

  • Oil pump motor controller

  • Wire harness or connector

  • Fusible link (OIL PMP)

  • OIL PMP relay

WIRING DIAGRAM

Refer to the wiring diagrams for DTC P0867-882 Click here.

INSPECTION PROCEDURE

Note

If P0C2D-858 is also output, troubleshoot P0C2D-858 first.

PROCEDURE


  1. CHECK POWER MANAGEMENT CONTROL ECU (CHECK WAVEFORM)


    1. A01FRX3E01
      Text in Illustration
      *a

      Component with harness connected

      (Power Management Control ECU)

      Connect an oscilloscope to the power management control ECU terminals specified in the table below, and measure the waveform.

      Item Contents
      Terminal A35-17 (TPST) - N91-6 (E1)
      Equipment Setting 5 V/DIV., 5 ms./DIV.
      Condition Power switch on (IG)
      Result
      Result Proceed to
      Waveform is flat, and is stuck on the +B side. A
      Normal B

    2. Turn the power switch off.


    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

  2. CHECK CONNECTOR CONNECTION CONDITION (OIL PUMP MOTOR CONTROLLER CONNECTOR)

    Note

    Before disconnecting the connectors, confirm that they are properly connected by checking that the locking claws are engaged and that the connectors cannot be pulled out.


    1. A01FSZN

      Check the connections of the oil pump motor controller connectors Click here.

      OK
      The connectors are connected securely and there are no contact problems.

      Tech Tips

      For connector A, when connecting it, insert it with the locking lever in the raised position. Rotate the lever downward and make sure that the connector is pulled into its socket. When the locking lever is in its fully closed position, a click will be heard as its locking claws engage. After the click is heard, pull up on the connector to confirm that it is properly connected.


    NG

    CONNECT SECURELY

    OK

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


    1. A01FQC6E01
      Text in Illustration
      *A for LHD
      *B for RHD

      Check the connector connections and contact pressure of the relevant terminals for the power management control ECU connectors Click here.

      OK
      The connectors are connected securely and there are no contact pressure problems.

    NG

    CONNECT SECURELY

    OK

  4. CHECK OIL PUMP MOTOR CONTROLLER


    1. A01FULAE10
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Oil Pump Motor Controller)

      Disconnect the connector from the oil pump motor controller.

    2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A44-5 (+B) - Body ground Power switch on (IG) 11 to 14 V

      Note

      Turning the power switch on (IG) with the oil pump motor controller connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    4. Turn the power switch off.

    5. Connect the oil pump motor controller connector.


    NG

    Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - OIL PUMP MOTOR CONTROLLER)


    1. A01FV87E04
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)
      *b

      Front view of wire harness connector

      (to Oil Pump Motor Controller)

      Disconnect the connector from the power management control ECU.

    2. Disconnect the connector from the oil pump motor controller.

    3. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A35-17 (TPST) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the power management control ECU and oil pump motor controller connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    5. Turn the power switch off.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A35-17 (TPST) - A44-7 (OPST) Power switch off Below 1 Ω
      A35-17 (TPST) or A44-7 (OPST) - Body ground and other terminals Power switch off 10 kΩ or higher

    7. Connect the power management control ECU connector.

    8. Connect the oil pump motor controller connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK POWER MANAGEMENT CONTROL ECU


    1. A01FVQXE06
      Text in Illustration
      *a

      Component with harness connected

      (Power Management Control ECU)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A35-17 (TPST) - A36-3 (+B1) Power switch off 10 kΩ or higher

    NG

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    OK

  7. CHECK IF PART IS CORRECTLY GROUNDED


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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      Oil pump motor controller - Body ground Power switch off Below 1 Ω

    NG

    REPAIR OR REPLACE OIL PUMP MOTOR CONTROLLER BRACKET

    OK

    REPLACE OIL PUMP MOTOR CONTROLLER Click here

  8. CHECK FUSIBLE LINK (OIL PMP)


    1. A01FV3PE01
      Text in Illustration
      *1 No. 1 Engine Room Relay Block and Junction Block Assembly
      *2 Fusible Link (OIL PMP)

      Check if there is an open circuit in the fusible link (OIL PMP) in the No. 1 engine room relay block and junction block assembly.

      OK
      There is no open circuit in the fusible link (OIL PMP).

    NG

    REPLACE FUSIBLE LINK (OIL PMP)

    OK

  9. CHECK HARNESS AND CONNECTOR (NO. 1 ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY - OIL PUMP MOTOR CONTROLLER)


    1. A01FUW2E01
      Text in Illustration
      *1 No. 1 Engine Room Relay Block and Junction Block Assembly
      *2 OIL PMP Relay

      Remove the OIL PMP relay from the No. 1 engine room relay block and junction block assembly.

    2. Disconnect the connector from the oil pump motor controller.

    3. A01FTQBE01
      Text in Illustration
      *1 No. 1 Engine Room Relay Block and Junction Block Assembly
      *2 OIL PMP Relay
      *a

      Front view of wire harness connector

      (to Oil Pump Motor Controller)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      5 (OIL PMP relay) - A44-5 (+B) Power switch off Below 1 Ω
      2 (OIL PMP relay) - Body ground Power switch off Below 1 Ω
      5 (OIL PMP relay) - Body ground Power switch off 10 kΩ or higher

    4. Install the OIL PMP relay to the No. 1 engine room relay block and junction block assembly.

    5. Connect the oil pump motor controller connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK RELAY (OIL PMP)


    1. A01FUW2E01
      Text in Illustration
      *1 No. 1 Engine Room Relay Block and Junction Block Assembly
      *2 OIL PMP Relay

      Remove the OIL PMP relay from the No. 1 engine room relay block and junction block assembly.

    2. A01FSCJE02
      Text in Illustration
      *1 OIL PMP Relay

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 151 to 203 Ω
      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 OIL PMP relay to the No. 1 engine room relay block and junction block assembly.


    NG

    REPLACE RELAY (OIL PMP)

    OK

  11. CHECK HARNESS AND CONNECTOR


    1. A01FRG9E01
      Text in Illustration
      *1 No. 1 Engine Room Relay Block and Junction Block Assembly
      *2 OIL PMP Relay

      Remove the OIL PMP relay from the No. 1 engine room relay block and junction block assembly.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      3 (OIL PMP relay) - Body ground Power switch off 11 to 14 V

    3. Install the OIL PMP relay to the No. 1 engine room relay block and junction block assembly.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. CHECK POWER MANAGEMENT CONTROL ECU


    1. A01FRG9E01
      Text in Illustration
      *1 No. 1 Engine Room Relay Block and Junction Block Assembly
      *2 OIL PMP Relay

      Remove the OIL PMP relay from the No. 1 engine room relay block and junction block assembly.

    2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      1 (OIL PMP relay) - Body ground Power switch on (IG) 11 to 14 V

    4. Turn the power switch off.

    5. Install the OIL PMP relay to the No. 1 engine room relay block and junction block assembly.


    NG

    CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - NO. 1 ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY) Click here

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

  13. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - NO. 1 ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY)


    1. Remove the OIL PMP relay from the No. 1 engine room relay block and junction block assembly.

      A01FRA6E01
      Text in Illustration
      *1 No. 1 Engine Room Relay Block and Junction Block Assembly *2 OIL PMP Relay
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)

      		 - -

    2. Disconnect the connector from the power management control ECU.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1 (OIL PMP relay) - A35-7 (TPM2) Power switch off Below 1 Ω
      1 (OIL PMP relay) or A35-7 (TPM2) - Body ground Power switch off 10 kΩ or higher

    4. Connect the power management control ECU connector.

    5. Install the OIL PMP relay to the No. 1 engine room relay block and junction block assembly.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

  14. CHECK FOR INTERMITTENT PROBLEMS

    Click here


    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here