DTC P2796-12: Electromagnetic Oil Pump Circuit Short to Battery [11/2016 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Stop and Start / Trouble Codes.
5. Read the DTCs

   Powertrain > Stop and Start > Trouble Codes 

   Result	Proceed to
   DTC P279612 is output	A
   DTCs P279612 and P323A19 are output	B

Result: 

B 

See step  5

Result: 

A 

Go to next step 

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1. Turn the ignition switch to ON.
2. Measure the voltage according to the value(s) in the table below.

   Tester Connection	Condition	Result	Proceed to
   F123-8 (EGND) - Body ground	Ignition switch ON	10 to 14 V	A
   		Below 1 V	B

Result: 

B 

USE SIMULATION METHOD TO CHECK.  Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2016 - ] .

A 

Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the transmission wire connector.
2. Turn the ignition switch to ON.
3. Measure the voltage according to the value(s) in the table below.

   Tester Connection	Condition	Result	Result
   F123-8 (EGND) - Body ground	Ignition switch ON	10 to 14 V	A
   		Below 1 V	B

Result: 

B 

REPLACE TRANSMISSION WIRE 

• for 2WD Models:

  Refer to REMOVAL [11/2016 - ]

• for AWD Models:

  Refer to REMOVAL [11/2016 - ]

Result: 

A 

Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the engine stop and start ECU connector.
2. Turn the ignition switch to ON.
3. Measure the voltage according to the value(s) in the table below.

   Tester Connection	Condition	Result	Proceed to
   F123-8 (EGND) - Body ground	Ignition switch ON	10 to 14 V	A
   		Below 1 V	B

Result: 

A 

REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE STOP AND START ECU (EGND) - TRANSMISSION WIRE (EMP-)) 

Result: 

B 

REPLACE ENGINE STOP AND START ECU.  Refer to REMOVAL [11/2016 - ] .

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F123-9 (EMOP) - Other terminals*	Always	10 kΩ or higher

   • *: Except F123-8 (EGND) terminal

   Proceed to
   OK
   NG

Result: 

OK 

GO TO DTC P323A19.  Refer to DTC P323A-19: Backup Boost Converter "A" Circuit Current Above Threshold [11/2016 - ] .

Result: 

NG 

Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the transmission wire connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F123-9 (EMOP) - Other terminals	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE TRANSMISSION WIRE 

• for 2WD Models:

  Refer to REMOVAL [11/2016 - ]

• for AWD Models:

  Refer to REMOVAL [11/2016 - ]

Result: 

NG 

Go to next step 

1. Disconnect the engine stop and start ECU connector.
2. Disconnect the transmission wire connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F123-9 (EMOP) or C62-29 (EMP+) - Other terminals	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ENGINE STOP AND START ECU.  Refer to REMOVAL [11/2016 - ] .

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR