DTC B2799: Immobilizer Malfunction [06/2015 - ]: Description

When there is a communication malfunction between the EV control ECU and ID code box (immobilizer code ECU), or when the communication ID codes do not match, the EV control ECU stores this DTC.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
B2799	Immobilizer Malfunction	Either condition is met (1 trip detection logic*): A malfunction in the communication or communication lines between the EV control ECU and ID code box (immobilizer code ECU). A matching communication code cannot be verified during communication between the EV control ECU and ID code box (immobilizer code ECU).	ID code box (immobilizer code ECU) EV control ECU Harness or connector	DTC output confirmation operation (Either condition is met): Within 10 seconds of a hybrid control system start operation being performed (with the park (P) selected and the brake pedal depressed, the power switch is pressed while the key is being carried). If there is a malfunction, the hybrid control system stops (communication begins within 3 seconds of the hybrid control system start operation being performed, and DTCs are stored after 6 seconds). 10 seconds after the power switch is turned on (IG) after reconnecting the cable to the negative (-) auxiliary battery terminal (communication begins within 3 seconds of the power switch being turned on (IG), and DTCs are stored after 6 seconds).

*: Only output while a malfunction is present.

DTC DETECTION CONDITIONS

		Vehicle Condition
		Pattern 1	Pattern 2	Pattern 3
Diagnosis Condition	Hybrid control system start operation.	◦	◦	◦
Malfunction Status	A malfunction in the communication between the EV control ECU and ID code box (immobilizer code ECU).	◦	-	-
	A malfunction in the communication lines between the EV control ECU and ID code box (immobilizer code ECU).	-	◦	-
	A matching communication code cannot be verified during communication between the EV control ECU and ID code box (immobilizer code ECU).	-	-	◦
Detection Time		-	-
Number of Trips		1 trip	1 trip	1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

VEHICLE CONDITION AND FAIL-SAFE OPERATION WHEN MALFUNCTION DETECTED

Vehicle Condition when Malfunction Detected	Fail-safe Operation when Malfunction Detected
Hybrid control system cannot be started	-

RELATED DATA LIST AND ACTIVE TEST

DTC No.	Data List and Active Test
B2799	-