Diagnostic Trouble Code Chart

HINT:

If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "Refer To" below.

CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) DIAGNOSTIC TROUBLE CODE CHART

CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

DTC Code	Detection Item	Trouble Area	Refer To
B2784	Antenna Coil Open / Short	1. Wire harness or connector 2. Engine switch 3. Certification ECU (Smart key ECU assembly)	Refer to DTC B2784: Antenna Coil Open / Short
B2785	Communication Malfunction between ECUs Connected by LIN	1. Certification ECU (Smart key ECU assembly) 2. Power source control ECU 3. Steering lock ECU 4. ID code box (Immobiliser code ECU) 5. Wire harness or connector	Refer to DTC B2785: Communication Malfunction between ECUs Connected by LIN
B2786	No Response from Steering Lock ECU	1. Steering lock ECU 2. Certification ECU (Smart key ECU assembly) 3. Wire harness or connector	Refer to DTC B2786: No Response from Steering Lock ECU
B2789	No Response from ID BOX	1. ID code box (Immobiliser code ECU) 2. Certification ECU (Smart key ECU assembly) 3. Wire harness or connector	Refer to DTC B2789: No Response from ID BOX
B278A	Short to GND in Immobiliser System Power Source Circuit	1. Wire harness or connector 2. Engine switch 3. Certification ECU (Smart key ECU assembly)	Refer to DTC B278A: Short to GND in Immobiliser System Power Source Circuit
B2790	ID BOX EEPROM Malfunction	ID code box (Immobiliser code ECU)	Refer to DTC B2790: ID BOX EEPROM Malfunction

ECM DIAGNOSTIC TROUBLE CODE CHART

HINT:

The DTCs for the engine immobiliser system are specified above. If the other codes are output, check the DTC chart for the SFI system.

ECM

DTC Code	Detection Item	Trouble Area	Refer To
B2799	Engine Immobiliser System Malfunction	1. Wire harness or connector 2. ECM 3. ID code box (Immobiliser code ECU)	Refer to DTC B2799: Engine Immobiliser System Malfunction
B279A	Theft Deterrent System Communication Line High Fixation	1. Wire harness or connector 2. ECM 3. ID code box (Immobiliser code ECU)	Refer to DTC B279A: Theft Deterrent System Communication Line High Fixation
B279C	Theft Deterrent System Presence Detection	ECM	Refer to DTC B279C: Theft Deterrent System Presence Detection