HYBRID CONTROL SYSTEM, Diagnostic DTC:P2602-767

DTC Code DTC Name
P2602-767 Oil Pump Control Circuit Low

DESCRIPTION

Refer to the description for DTC P2601-777.

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DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
P2602-767 Oil Pump Control Circuit Low

  • GND short in oil pump circuit

  • When OPM2 signal is on, OPST signal remains low

(1 trip detection logic)

  • Wire harness or connector

  • Oil pump with motor assembly

  • EV control ECU

Master Warning Light:

Comes on
Related Data List
DTC No. Data List
P2602-767

  • Motor Cooler Oil Pump Status

  • Target Motor Cooler Oil Pump Duty

  • Motor Cooler Oil Pump Relay

WIRING DIAGRAM

Refer to the wiring diagram for DTC P2601-777.

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CAUTION / NOTICE / HINT

Note

When the vehicle is parked with the power switch off, if the FC control ECU judges that the FC stack temperature will go below 0°C (32°F), it activates the FC air compressor, hydrogen pump and FC cooling water pump for a maximum of 180 seconds and drains water from the FC stack assembly. When performing inspection or repairs with the power switch off (not on (IG) or on (READY)), disconnect the cable from the negative (-) auxiliary battery terminal before performing work (If the auxiliary battery voltage is needed to conduct inspection, warm up the FC system beforehand).

Tech Tips


  • When troubleshooting the oil pump with motor assembly, check for the following conditions.


    • ATF temperature inside the oil cooler is 5°C (41°F) or more.

    • The ambient temperature sensor value is 5°C (41°F) or more.

  • After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


    1. Turn the power switch on (IG).

    2. Enter inspection mode.

      Tech Tips

      Entering inspection mode activates the oil pump with motor assembly.

    3. Turn the power switch on (READY) and wait for 5 seconds or more.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (EV CONTROL ECU - OIL PUMP WITH MOTOR ASSEMBLY)


    1. Disconnect the oil pump with motor assembly connector.

    2. Disconnect the EV control ECU connector.

    3. A01MI35C12
      *a

      Front view of wire harness connector

      (to Oil Pump with Motor Assembly)
      *b

      Rear view of wire harness connector

      (to EV Control ECU)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A8-2 (OPST) or A28-34 (OPST) - Body ground Power switch off 10 kΩ or higher

    4. Reconnect the EV control ECU connector.

    5. Reconnect the oil pump with motor assembly.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT OIL PUMP WITH MOTOR ASSEMBLY


    1. Disconnect the A8 oil pump with motor assembly connector.

    2. A01MFRDC11
      *a

      Component without harness connected

      (Oil Pump with Motor Assembly)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      2 (OPST) - Body ground Power switch off 10 kΩ or higher

    3. Reconnect the oil pump with motor assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE EV CONTROL ECU Click here

    NG

    REPLACE OIL PUMP WITH MOTOR ASSEMBLY Click here