B2278

DTC B2278 Engine Switch Circuit Malfunction

DESCRIPTION

DTC Detection Condition:

This DTC is output when 1) a malfunction is detected between the power source control ECU and the engine switch; or 2) either of the switches inside the engine switch is malfunctioning.

HINT: When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

Wiring Diagram:

Step 1:

Step 1 (Continued)-3:

Step 3 (Continued)-5:

Step 5 (Continued)-6:

INSPECTION PROCEDURE