Codes 55

The brake fluid level warning switch sends the appropriate signal to the ECU when the brake fluid level drops.

CODE 55 CIRCUIT DESCRIPTION

Code	Diagnostic Code Detecting Condition	Trouble Area
55	Voltage at ECU terminal LBL is 0V continuously for 10 seconds or more while brake fluid level warning switch is OK.	Brake fluid level Brake fluid level warning switch. Short in brake fluid level warning switch ckt. ECU.

NOTE: Fail Safe Function: If trouble occurs in the solenoid relay circuit, the ECU cuts off current to the solenoid relay and prohibits ABS control.

Fig 1: Code 51 Wiring Schematic

Fig 2: Code 51 Brake Fluid Level Warning Switch Circuit Check