DTC P2797-895: Auxiliary Transmission Fluid Pump Control Performance: Procedure

1. Turn the power switch off.
   Fig 1: Identifying A55 Oil Pump Motor Controller Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect connector A55 from the oil pump motor controller.
3. Turn the power switch on (IG).
4. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Specified Condition
   +B (A55-5) - Body ground	10 to 14 V

   NOTE:

   Turning the power switch on (IG) with the oil pump motor controller connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

OK → See step   8 

NG: Go to next step 

1. Check that there is no open circuit in the fusible link (OIL PMP) in the engine room R/B No. 1.
   Fig 2: Identifying Fusible Link (Oil Pump)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

   There is no open circuit in the fusible link.

NG → REPLACE FUSIBLE LINK 

OK: Go to next step 

1. Turn the power switch off.
   Fig 3: Identifying A55 Oil Pump Motor Controller Connector And OIL PMP Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Remove the OIL PMP relay from the engine room R/B No. 1.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Specified Condition
   Engine room R/B No. 1 OIL PMP relay terminal 3 - +B (A55-5)	Below 1 Ω
   Engine room R/B No. 1 OIL PMP relay terminal 3 - Body ground	10 kΩ or more

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

   Standard resistance

   Tester Connection	Specified Condition
   Engine room R/B No. 1 OIL PMP relay terminal 2 - Body ground	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the OIL PMP relay from the engine room R/B No. 1.
2. Measure the resistance according to the value(s) in the table below.
   Fig 4: Inspecting Oil Pump Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester Connection	Specified Condition
   1 - 2	151 to 203 Ω
   3 - 5	10 kΩ or more
   3 - 5	Below 1 Ω (Apply battery voltage between 1 and 2)

NG → REPLACE RELAY (OIL PMP) 

OK: Go to next step 

1. Turn the power switch off.
   Fig 5: Identifying OIL PMP Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Specified Condition
   Engine room R/B No. 1 OIL PMP relay terminal 5 - Body ground	10 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Turn the power switch on (IG).
   Fig 6: Identifying OIL PMP Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Specified Condition
   Engine room R/B No. 1 OIL PMP relay terminal 1 - Body ground	10 to 14 V

OK → See step   8 

NG: Go to next step 

1. Turn the power switch off.
   Fig 7: Identifying A54 Hybrid Vehicle Control ECU And OIL PMP Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect connector A54 from the hybrid vehicle control ECU.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance (Check for open)

   Tester Connection	Specified Condition
   OPM2 (A54-58) - Engine room R/B No. 1 OIL PMP relay terminal 1	Below 1 Ω

   Standard resistance (Check for short)

   Tester Connection	Specified Condition
   OPM2 (A54-58) or Engine room R/B No. 1 OIL PMP relay terminal 1 - Body ground	10 kΩ or more

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   10 

1. Check for intermittent problems. Refer to CHECK FOR INTERMITTENT PROBLEMS .

YES → REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

NO → See step   9