DTC B2799-790: Engine Immobilizer System Malfunction [11/2016 - ]: Procedure

1. Register the ECU communication ID.

   HINT: 

   Refer to Registration.

   Refer to REGISTRATION [11/2016 - ]

Result: 

NEXT 

1. Clear the DTCs.

   Powertrain > Hybrid Control > Clear DTCs 

Result: 

NEXT 

1. Perform "DTC Output Confirmation Operation" procedure.
2. Check for DTCs.

   Powertrain > Hybrid Control > Trouble Codes 

   OK

   B2799-790 is not output.

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

END (COMMUNICATION ID REGISTRATION WAS DEFECTIVE) 

Result:  2

NG 

See step  4

1. Disconnect the F9 certification ECU (smart key ECU assembly) connector.
2. Disconnect the F137 hybrid vehicle control ECU assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F9-6 (EFIO) - F137-22 (IMI)	Always	Below 1 Ω
   F9-7 (EFII) - F137-23 (IMO)	Always	Below 1 Ω
   F9-6 (EFIO) or F137-22 (IMI) - Body ground	Always	10 kΩ or higher
   F9-7 (EFII) or F137-23 (IMO) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  1

OK 

See step  5

1. Temporarily replace the hybrid vehicle control ECU assembly with a new one.

   Refer to REMOVAL [11/2016 - ]

Result: 

NEXT 

1. Clear the DTCs.

   Powertrain > Hybrid Control > Clear DTCs 

Result: 

NEXT 

1. Perform "DTC Output Confirmation Operation" procedure.
2. Check for DTCs.

   Powertrain > Hybrid Control > Trouble Codes 

   OK

   B2799-790 is not output.

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

END (HYBRID VEHICLE CONTROL ECU ASSEMBLY WAS DEFECTIVE) 

Result:  2

NG 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [11/2016 - ]