DTC 528

DTC 528 LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE

CIRCUIT DESCRIPTION

DTC Detection Condition:

The HV control ECU transmits and receives signals to and from the ECM, battery ECU, skid control ECU, power steering ECU, and the gateway ECU via CAN (Controller Area Network) communication.

MONITOR DESCRIPTION

Typical Enabling Conditions:

Typical Malfunction Thresholds:

Component Operating Range:

If the HV control ECU detects malfunction in CAN communication with the ECM or battery ECU, it illuminates the MIL and sets a DTC.

Step 1:

Step 2:

INSPECTION PROCEDURE

CHECK FOR INTERMITTENT PROBLEMS

a. Perform a simulation test .
1. In the simulation test, reproduce the driving condition at the trouble occurrence according to the customer's comments and freeze frame data recorded with DTCs, such as an opening angle of the accelerator pedal, SOC, engine coolant temperature, engine rpm, and MG1/MG2 rpm and torque.
b. Check the connector(s) and terminal(s).
c. Wiggle the harness and connector(s).