B2557

DTC B2557 VEHICLE SPEED

DIAGNOSIS DESCRIPTION
B2557 vehicle speed signal compares the vehicle speed input from the unified meter and A/C amp. and ABS via CAN communication and the vehicle signal (8 pulses) from the unified meter and A/C amp. If there is the difference between each vehicle speed input, it judges that it is the malfunction and displays the DTC (Diagnostic Trouble Code).




TERMINALS AND REFERENCE VALUE FOR INTELLIGENT KEY UNIT INPUT




SELF-DIAGNOSTIC LOGIC

Diagnostic Procedure (Step 1):

Diagnostic Procedure (Step 2):

DIAGNOSTIC PROCEDURE