Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2007 Lexus IS 250 AWDFACTORY OEM SERVICE PROCEDURE
Service Data
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 | ||
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.