DESCRIPTION
If the remote engine start ECU does not respond to the certification ECU (smart key ECU assembly) or the remote engine start ID is not registered, this DTC is stored.
HINT:
Registration status of the remote engine start ECU ID can be checked using the "Wireless C Code" item in the Data List.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
---|---|---|---|---|
B2779 | Engine Starter Communication Malfunction | One of the following conditions is met (1 trip detection logic*):
|
| DTC output confirmation operation:
|
*: Only output while a malfunction is present.
Vehicle Condition and Fail-safe Operation when Malfunction Detected Vehicle Condition when Malfunction Detected | Fail-safe Operation when Malfunction Detected |
---|---|
Engine does not start with remote start operation | Engine cannot be started by remote start operation only |
DTC No. | Data List and Active Test |
---|---|
B2779 |
|
CAUTION / NOTICE / HINT
NOTICE:
Click here
PROCEDURE
1. | CHECK CAN COMMUNICATION SYSTEM |
(a) Check for CAN communication system DTCs.
Click here
OK:
CAN communication DTCs are not output.
NG | ![]() | GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) |
|
2. | READ VALUE USING TECHSTREAM (WIRELESS C CODE) |
(a) Turn the engine switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Body Electrical / Smart Access / Data List.
(f) Read the Data List according to the display on the Techstream.
Body Electrical > Smart Access > Data List 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: Remote starter ID not registered to remote engine start ECU and certification ECU (smart key ECU assembly) Regd: Remote starter ID registered Remote starter ID remote engine start ECU and certification ECU (smart key ECU assembly) | Problems may be caused by the following:
|
Tester Display |
---|
Wireless C Code |
Result | Proceed to |
---|---|
"No Regd" is displayed on the Techstream | A |
"Regd" is displayed on the Techstream | B |
B | ![]() | GO TO STEP 5 |
|
3. | REGISTER REMOTE ENGINE STARTER ID |
(a) Register the remote engine starter ID.
|
4. | CHECK REMOTE ENGINE STARTER FUNCTION |
(a) Check the remote engine starter function.
OK:
Remote engine starter functions operate normally.
OK | ![]() | END (REMOTE ENGINE STARTER ID WAS NOT REGISTERED) |
NG | ![]() | GO TO STEP 5 |
5. | REPLACE REMOTE ENGINE STARTER ECU |
(a) Temporarily replace the remote engine starter ECU with a new one.
HINT:
Register the remote engine starter ID.
(b) Check the remote engine starter function.
OK:
Remote engine starter functions operate normally.
OK | ![]() | END (REMOTE ENGINE STARTER ECU WAS DEFECTIVE) |
|
6. | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
(a) Temporarily replace the main body ECU (multiplex network body ECU) with a new one.
Click here
(b) Check the remote engine starter function.
OK:
Remote engine starter functions operate normally.
OK | ![]() | END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE) |
NG | ![]() | REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
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