Diagnostic Trouble Code Chart

HINT: 

If a trouble code is stored during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the reference below.

1. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) DIAGNOSTIC TROUBLE CODE TABLE 
   CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
   
   

   DTC Code	Detection Item	Trouble Area	Reference
   B2784	Antenna Coil Open/Short	Wire harness or connector Power switch Certification ECU (Smart key ECU assembly)	Refer to DTC B2784: Antenna Coil Open/Short
   B278A	Short to GND in Immobilizer System Power Source Circuit	Wire harness or connector Power switch Certification ECU (Smart key ECU assembly)	Refer to DTC B278A: Short to GND in Immobilizer System Power Source Circuit
   B2790	ID BOX EEPROM Malfunction	ID code box (Immobilizer code ECU) Certification ECU (Smart key ECU assembly)	Refer to DTC B2790: ID BOX EEPROM Malfunction

2. HYBRID VEHICLE CONTROL ECU DIAGNOSTIC TROUBLE CODE TABLE 

   HINT: 

   The DTCs for the engine immobilizer system are specified above. If the other codes are output, check the DTC table for the hybrid control system.

   HYBRID VEHICLE CONTROL ECU
   
   

   DTC Code	Detection Item	Trouble Area	Reference
   B2799	Engine Immobilizer System Malfunction	Wire harness or connector Hybrid vehicle control ECU ID code box (Immobilizer code ECU)	Refer to DTC B2799: Engine Immobilizer System Malfunction
   B279A	Theft Deterrent System Communication Line High Fixation	Wire harness or connector Hybrid vehicle control ECU ID code box (Immobilizer code ECU)	Refer to DTC B279A: Theft Deterrent System Communication Line High Fixation
   B279C	Theft Deterrent System Presence Detection	Hybrid vehicle control ECU	Refer to DTC B279C: Theft Deterrent System Presence Detection