P2797-895

L110F HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P2797-895: Auxiliary Transmission Fluid Pump Control Performance

DTC P2797-895 - Auxiliary Transmission Fluid Pump Control Performance

DESCRIPTION

Refer to the description for DTC P2797-865 P2797-865.






MONITOR DESCRIPTION

The hybrid vehicle control ECU monitors the operation of the auxiliary transmission fluid pump. If the hybrid vehicle control ECU detects a malfunction of the auxiliary transmission fluid pump control circuit, the hybrid vehicle control ECU will illuminate the MIL and set a DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





COMPONENT OPERATING RANGE





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK OIL PUMP MOTOR CONTROLLER (VOLTAGE)





(a) Turn the power switch off.
(b) Disconnect connector A78 from the oil pump motor controller.
(c) Turn the power switch on (IG).
(d) Measure the voltage according to the value(s) in the table below.
Standard voltage :






NG -- CHECK FUSIBLE LINK BLOCK ASSEMBLY (OIL PMP)
OK -- Continue to next step.
2. CHECK FOR INTERMITTENT PROBLEMS
(a) Check for intermittent problems. Check For Intermittent Problems

NG -- REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK -- REPLACE OIL PUMP MOTOR CONTROLLER
3. CHECK FUSIBLE LINK BLOCK ASSEMBLY (OIL PMP)





(a) Check if there is an open circuit in the fusible link (OIL PMP) in the engine room No. 1 junction block.
OK:
There is no open circuit in the fusible link (OIL PMP).
NG -- REPLACE FUSIBLE LINK BLOCK ASSEMBLY
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (RELAY BLOCK - OIL PUMP MOTOR CONTROLLER)
(a) Turn the power switch off.





(b) Remove the OIL PMP relay from the engine room No. 5 relay block.





(c) Measure the resistance according to the value(s) in the table below.
Standard resistance (Check for open):






Standard resistance (Check for short):






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. CHECK RELAY (OIL PMP)





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






NG -- REPLACE RELAY (OIL PMP)
OK -- Continue to next step.
6. CHECK HARNESS AND CONNECTOR
(a) Turn the power switch off.





(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
7. CHECK HYBRID VEHICLE CONTROL ECU
(a) Turn the power switch on (IG).





(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - ENGINE ROOM NO. 5 RELAY BLOCK)
OK -- Continue to next step.
8. CHECK FOR INTERMITTENT PROBLEMS
(a) Check for intermittent problems. Check For Intermittent Problems

NG -- REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK -- REPLACE OIL PUMP MOTOR CONTROLLER
9. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - ENGINE ROOM NO. 5 RELAY BLOCK)





(a) Turn the power switch off.
(b) Disconnect connector A74 from the hybrid vehicle control ECU.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance (Check for open):






Standard resistance (Check for short):






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE HYBRID VEHICLE CONTROL ECU