P2602

HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM: P2602-767: Oil Pump Control Circuit Low
P2602-767 - Oil Pump Control Circuit Low

DESCRIPTION

The power management control ECU (HV CPU) detects the MG1 and MG2 temperature based on signals from the generator and motor temperature sensors and activates the OIL PMP relay and oil pump driver (oil pump with motor assembly).

The power management control ECU (HV CPU) monitors OPST signals from the oil pump driver and detects malfunctions.





WIRING DIAGRAM





INSPECTION PROCEDURE

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

- ATF temperature inside the oil cooler is 41°F (5°C) or more.
- The ambient temperature sensor value is 41°F (5°C) or more.
PROCEDURE

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

(a) Disconnect the A75 connector from the oil pump with motor assembly.

(b) Disconnect the A80 connector from the power management control ECU.

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





Standard Resistance:





Text in Illustration





(d) Connect the power management control ECU connector.

(e) Connect the oil pump with motor assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. INSPECT OIL PUMP WITH MOTOR ASSEMBLY

(a) Disconnect the A75 connector from the oil pump with motor assembly.

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





Standard Resistance:





Text in Illustration





(c) Connect the oil pump with motor assembly connector.

NG -- REPLACE OIL PUMP WITH MOTOR ASSEMBLY

OK -- REPLACE POWER MANAGEMENT CONTROL ECU Components