Circuit Description

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

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

DIAGNOSTIC TROUBLE CODE TABLE

DTC No.	DTC Detection Condition	Trouble Area
C1202/52 C1202/58	When either of the following conditions is detected: Fluid level of the reservoir tank is LOW for 4 seconds or 40 seconds after the ignition switch is turned ON, or for 7 seconds during pump motor operation. With ECU terminal IG1 voltage at 9.5 V to 17.2 V, an open in the brake fluid level warning switch circuit continues for 2 seconds or more.	Brake fluid level Brake fluid level warning switch Brake fluid level warning switch circuit

HINT:

If this code (C1202/52) is output, the following situations will occur:

The VSC TRAC and brake warning lights, and the VSC OFF indicator light will come on.
Control of all systems other than ABS and EBD is canceled.

If this code (C1202/58) is output, the following situations will occur:

The ABS, VSC TRAC, and brake warning lights, and the slip and VSC OFF indicator lights will come on.
Control of all systems other than EBD is canceled.