LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2004 >> Tundra Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 471 (Brakes - Abs With EBD & BA & TRAC & VSC (Diagnostics)) >> Abs With EBD & BA & TRAC & VSC System >> Circuit Inspection >> DTC C1257/57: Power Supply Drive Circuit Malfunction >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2006 Toyota Tundra and 2005 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

The motor relay (semiconductor relay) is built in the master cylinder solenoid and drives the pump motor based on a signal from the skid control ECU.

DTC - C1257/57 TROUBLE DETECTION

DTC No. DTC Detecting Condition Trouble Area
C1257/57 Open circuit in pump motor input circuit Hydraulic brake booster pump motor circuit
scientia non olet · About LEMON Manuals