RX400h · Service Manual HYBRID SYSTEM

P2602-767

Diagnostic trouble codes

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)

  1. A111631E17
    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

  1. A105192E07
    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


← P2601-780P2603-768 →