WARNING: This page is about a different car, the 2007 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.

BRAKE CONTROL SERVICE DATA SPECIFICATION

Traction OFF switch	Resistance 3 - 4	Pressed	Below 1 ohms
		Not pressed	10 k ohms or higher
Brake pedal load sensing switch	Resistance 1 - 2	Brake pedal depressed	0.9 to 1.1 k ohms
		Brake pedal released	192 to 234 ohms
ABS motor1 relay	Resistance 1 - 2		Below 1 ohms
	Resistance 3 - 5	When battery voltage is not applied between terminals	10 k ohms or higher
		When battery voltage is applied to terminals 1 and 2	Below 1 ohms
ABS motor2 relay	Resistance 1 - 2		Below 1 ohms
	Resistance 3 - 5	When battery voltage is not applied between terminals	10 k ohms or higher
		When battery voltage is applied to terminals 1 and 2	Below 1 ohms
Stop light control relay	Resistance 1 - 2		Below 1 ohms
	Resistance 3 - 4	When battery voltage is not applied between terminals	Below 1 ohms
		When battery voltage is applied to terminals 1 and 2	10 k ohms or higher
	Resistance 3 - 5	When battery voltage is not applied between terminals	10 k ohms or higher
		When battery voltage is applied to terminals 1 and 2	Below 1 ohms
ABS solenoid relay (with VDIM)	Resistance 1 - 2		Below 1 ohms
	Resistance 3 - 5	When battery voltage is not applied between terminals	10 k ohms or higher
		When battery voltage is applied to terminals 1 and 2	Below 1 ohms

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Service Data

Use the Manual With the Right Hardware

When to See a Mechanic