DTC B2779: Engine Starter Communication Malfunction [10/2014 - ]: Procedure

1. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
2. Perform the remote hybrid control system starter operation.
3. Check for DTCs.

   OK

   DTC B126A is not output.

Result: 

NG 

GO TO OTHER FLOW CHART (B126A) 

(Refer to DTC B126A: Remote Engine Starter ECU Communication Stop [10/2014 - ] )

Result: 

OK 

See step  2

1. Turn the power switch off.
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Body Electrical / Smart Key / Data List.
6. Read the Data List according to the display on the Techstream.
   SMART KEY
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Wireless C Code	Registration status between remote engine starter ECU and certification ECU (smart key ECU assembly)/No Regd or Regd	No Regd: ID not registered between remote engine starter ECU and certification ECU (smart key ECU assembly) Regd: ID registered between remote engine starter ECU and certification ECU (smart key ECU assembly)	Problems may be caused by the following: DTC B2779 is stored. Remote engine starter ECU registration has not been performed. Malfunctions in the certification ECU (smart key ECU assembly), main body ECU (multiplex network body ECU) or remote engine starter ECU.

   Result

   Result	Proceed to
   "No Regd" appears on the Techstream screen	A
   "Regd" appears on the Techstream screen	B

Result: 

B 

See step  5

Result: 

A 

See step  3

1. Register the remote engine starter ID (Refer to REGISTRATION [10/2014 - ] ).

Result: 

NEXT 

See step  4

1. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
2. Perform the remote hybrid control system starter operation.
3. Check for DTCs.

   OK

   DTC B2779 is not output.

Result: 

OK 

END (REMOTE ENGINE STARTER ID WAS NOT REGISTERED CORRECTLY) 

Result: 

NG 

See step  5

1. Temporarily replace the remote engine starter ECU with a new one (Refer to REMOVAL [10/2014 - ] ).

Result: 

NEXT 

See step  6

1. Register the remote engine starter ID (Refer to REGISTRATION [10/2014 - ] ).

Result: 

NEXT 

See step  7

1. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
2. Perform the remote hybrid control system starter operation.
3. Check for DTCs.

   OK

   DTC B2779 is not output.

Result: 

OK 

END (REMOTE ENGINE STARTER ECU WAS DEFECTIVE) 

Result: 

NG 

See step  8

1. Temporarily replace the main body ECU (multiplex network body ECU) with a new one (Refer to REMOVAL [10/2014 - 10/2015] or REMOVAL [10/2015 - ] ).

Result: 

NEXT 

See step  9

1. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
2. Perform the remote hybrid control system starter operation.
3. Check for DTCs.

   OK

   DTC B2779 is not output.

Result: 

OK 

END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE) 

Result: 

NG 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

(Refer to REMOVAL [10/2014 - ] )