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.
1997 Lexus ES 300FACTORY OEM SERVICE PROCEDURE
Anti-Lock Brake System DTCS
ANTI-LOCK BRAKE SYSTEM - WITH TRACTION CONTROL DTCS (WITH TRACTION CONTROL)
| OEM Code | Description |
|---|---|
| 71 | Engine Control System Malfunction |
| 72 | Left Front Speed Sensor Signal Voltage Low |
| 73 | Open In ABS Solenoid Relay Circuit |
| 74 | Left Rear Speed Sensor Signal Voltage Low |
| 75 | ABS Control System Malfunction |
| 76 | Abnormal Change In Output Signal From Left Front Speed Sensor |
| 77 | Abnormal Change In Output Signal From Right Rear Speed Sensor |
| 78 | Abnormal Change In Output Signal From Left Rear Speed Sensor |
ANTI-LOCK BRAKE SYSTEM DTCS (WITHOUT TRACTION CONTROL)
| OEM Code | Description |
|---|---|
| 71 | Open In ABS Motor Relay Circuit |
| 72 | Open In ABS Solenoid Relay Circuit |
| 73 | Rear Speed Sensor Rotor Faulty Both Left & Right Rear) |
| 74 | Left Rear Speed Sensor Signal Voltage Low |
| 75 | Abnormal Change In Output Signal From Right Front Speed Sensor |
| 76 | Abnormal Change In Output Signal From Left Front Speed Sensor |
| 77 | Rear Speed Sensor Rotor Faulty Both Left & Right Rear) |
| 78 | Abnormal Change In Output Signal From Left Rear Speed Sensor |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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