B2554

B2554 ACC POWER CIRCUIT

DIAGNOSIS DESCRIPTION
B2554 ACC power supply circuit monitors the following 2 signals.
- Though the power supply switching control to ACC position by push-button ignition switch operation is performed normally, if there is no ACC power supply input to the Intelligent Key unit, it judges that it is the malfunction and displays the DTC (Diagnostic Trouble Code)
- When performing the power supply switching control to ACC position by push-button ignition switch operation, if the power supply position switching cannot be performed because the wake-up signal is not entered into PDU (Power Distribution Unit), it judges that it is the malfunction and displays the DTC (Diagnostic Trouble Code)

TERMINALS AND REFERENCE VALUE FOR INTELLIGENT KEY UNIT

Terminal And Reference Value For Intelligent Key Unit (Part 1):

Terminal And Reference Value For Intelligent Key Unit (Part 2):

CONSULT-III DATA MONITOR STANDARD VALUE






SELF-DIAGNOSTIC LOGIC






DIAGNOSTIC PROCEDURE

Step 1-2:

Step 2 (Continued)-3: