IMMOBILISER SYSTEM DIAGNOSTIC TROUBLE CODE CHART

Tech Tips

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 "See page" below.

Certification ECU (Smart Key ECU Assembly)
DTC Code Detection Item Detection Enabling Condition (DTC Output Confirmation Operation) See page
B2779 Engine Starter Communication Malfunction A remote engine start operation is performed.

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B2784 Antenna Coil Open / Short With the shift lever in P, the key is held near the power switch and a hybrid control system start operation is performed by pressing and holding the power switch when the transmitter battery is depleted.

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B278A Short to GND in Immobiliser System Power Source Circuit With the shift lever in P, the key is held near the power switch and a hybrid control system start operation is performed by pressing and holding the power switch when the transmitter battery is depleted.

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B2790 ID BOX EEPROM Malfunction An immobiliser set/unset operation is performed (Turn the power switch is off or on (IG) while carrying the key).

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Power Management Control ECU
DTC Code Detection Item Detection Enabling Condition (DTC Output Confirmation Operation) See page
B2799 Engine Immobiliser System Malfunction

Either condition is met:

- 10 seconds after a hybrid control system start operation (with the shift lever in P and the brake pedal depressed, the power switch is pressed while carrying the key). If there is a malfunction, the hybrid control system does not start (communication begins within 3 seconds of the hybrid control system start operation, 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).

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B279A Theft Deterrent System Communication Line High Fixation Turn the power switch on (IG) and wait 6 seconds.

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B279C Theft Deterrent System Presence Detection Check for DTCs.

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