DTC B2784: Antenna Coil Open / Short [06/2015 - ]: Description

When an open or short circuit is detected in the transponder key amplifier coil built into the power switch, the certification ECU (smart key ECU assembly) stores this DTC. This DTC is also stored as a past DTC.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
B2784	Antenna Coil Open / Short	The transponder key amplifier coil built into the power switch is open (see below) or shorted (determined by communication with certification ECU (smart key ECU assembly)). (1 trip detection logic*) Terminal AGND, VC5, TXCT or CODE circuit is open (includes disconnection of the power switch). The transponder key amplifier coil built into the power switch is open.	Power switch Certification ECU (smart key ECU assembly) Harness or connector	DTC output confirmation operation: With the park (P) selected and the key held near the power switch, a hybrid control system start operation is performed by pressing and holding the power switch when the transmitter battery is depleted.

*: Only output while a malfunction is present.

DTC DETECTION CONDITIONS

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	Always	◦	◦
Malfunction Status	Terminal AGND, VC5, TXCT or CODE circuit is open (includes disconnection of the power switch).	◦	-
Malfunction Status	The transponder key amplifier coil built into the power switch is open.	-	◦
Detection Time		-	-
Number of Trips		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 when transmitter battery is depleted by holding transmitter near power switch and pressing and holding power switch with park (P) selected	-

RELATED DATA LIST AND ACTIVE TEST

DTC No.	Data List and Active Test
B2784	-