Capacitor Communication Circuit Malfunction

DTC 44 CAPACITOR COMMUNICATION CIRCUIT MALFUNCTION

CIRCUIT DESCRIPTION

DTC Detecting Condition:

The brake control power supply assy (capacitor) provides auxiliary power for brake control when an auxiliary battery (12 V) voltage drops. The FAIL and ENA line are placed between the skid control ECU and the brake control power supply assy.

Signals indicating that the brake control power supply is in auxiliary mode are sent to the skid control ECU through the FAIL line.

Charge permit prohibition signals are sent to the brake control power supply through the ENA line.

Wiring Diagram:

Step 1 - 2:

Step 3:

INSPECTION PROCEDURE

NOTE: When replacing the skid control ECU assy, perform initialization of linear solenoid valve and calibration.