DTC    P2602-767    Coolant Pump Control Circuit Low

for Preparation Click here


DESCRIPTION

Refer to the description for DTC P2601-777. (Click here)

DTC No.
INF No.
DTC Detection Condition
Trouble Area
P2602
767
  1. GND short in oil pump driver circuit
  2. When OPM2 signal is ON, OPST signal remains Lo
  1. Wire harness or connector
  2. Oil pump w/ motor assembly
  3. HV control ECU

WIRING DIAGRAM

Refer to the wiring diagram for DTC P2601-777. (Click here)

INSPECTION PROCEDURE

NOTICE:
  1. When troubleshooting the oil pump w/ motor assembly, check for the following conditions:
    1. ATF temperature inside the oil cooler is 5°C (41 °F) or more.
    2. Value of the ambient temperature sensor is 5°C (41 °F) or more.

1.CHECK HARNESS AND CONNECTOR (HV CONTROL ECU - OIL PUMP W/MOTOR ASSEMBLY)


    A111631E17

  1. Disconnect the H31 HV control ECU connector.

  1. Disconnect the oil pump w/ motor assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Specified Condition
    OPST (H31-7) - Body ground
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.INSPECT OIL PUMP W/MOTOR ASSEMBLY


    A105192E07

  1. Disconnect the O3 oil pump w/ motor assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Specified Condition
    STAT (O3-2) - Body ground
    		10 kΩ or higher



NG
REPLACE OIL PUMP W/MOTOR ASSEMBLY
OK

REPLACE HYBRID VEHICLE CONTROL ECU