P3154

L110F HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P3154-896: Transmission Oil Pump Motor Driver Temperature High

DTC P3154-896 - Transmission Oil Pump Motor Driver Temperature High

DESCRIPTION

The oil pump motor controller controls the rotation speed of the oil pump motor (three-phase brushless motor) in accordance with rotation speed request signals sent from the hybrid vehicle control ECU. The controller also outputs the oil pump motor status as a signal to the hybrid vehicle control ECU.













WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. SIMULATION TEST
(a) Turn the power switch off.
(b) Leave the vehicle for 6 hours.
HINT: Leaving the vehicle for 6 hours is required to cool the oil pump motor controller.

NEXT -- Continue to next step.
2. CLEAR DTC
(a) Select the following menu items:
(1) Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / HV ECU / DTC INFO / CURRENT CODES.
(2) Techstream - Select: Powertrain / Hybrid Control / Trouble Codes.
(b) Read and record the DTCs and freeze frame data.
(c) Select the following menu items:
(1) Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / HV ECU / DTC INFO / CLEAR CODES.
(2) Techstream - Select: Powertrain / Hybrid Control / Trouble Codes.
(d) Clear DTCs and freeze frame data.
NEXT -- Continue to next step.
3. CHECK DTC OUTPUT (HV)
(a) Select the following menu items:
(1) Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / HV ECU / DTC INFO / CURRENT CODES.
(2) Techstream - Select: Powertrain / Hybrid Control / Trouble Codes.
(b) Check if DTCs are output.
Result:






B -- REPLACE OIL PUMP MOTOR CONTROLLER
A -- REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY