B2557

B2557 VEHICLE SPEED

Description
BCM receives the 2 vehicle speed signals via CAN communication. 1 signal is transmitted by the combination meter. Another signal is transmitted by "ABS actuator and electric unit (control unit)". BCM compares both signals to detect the vehicle speed.

DTC Logic

DTC DETECTION LOGIC

NOTE:
- If DTC B2557 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-26, "DTC Logic". Security Control System
- If DTC B2557 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to SEC-27, "DTC Logic". Security Control System






DTC CONFIRMATION PROCEDURE

Step 1:

Diagnosis Procedure

Step 1-2: