LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2000 >> RX 300 AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock W/O Traction Control >> Diagnosis & Testing >> Speed Sensor Signal Check >> Without Scan Tool
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Without Scan Tool

  1. Turn ignition off. Using a fused jumper wire or Service Connector (SST 09843-18020), connect Data Link Connector No. 1 (DLC1) connector terminals Ts and E1. See Figure. DLC1 is located on left side of engine compartment, near junction block. Start engine. ABS light should blink once every .13 second. If ABS light does not blink, check ABS light circuit. See ABS WARNING LIGHT CIRCUIT  under SYSTEM TESTS.
  2. Drive vehicle at 28 MPH or greater for several seconds in a straight line. Stop vehicle. Using another fused jumper wire or Service Connector (SST 09843-18020), connect DLC1 connector terminals Tc and E1. There should now be 2 jumper wires. See Figure.
  3. Observe ABS warning light. If system is normal, ABS light will blink every .25 second. If system is malfunctioning, ABS light will flash codes. Identify DTC and probable cause. See SPEED SENSOR DIAGNOSTIC CODE IDENTIFICATION  table. Repair as necessary. Turn ignition off. Remove fused jumper wires or Service Connectors (SST 09843-18020), from DLC1 connector.
    SPEED SENSOR DIAGNOSTIC TROUBLE CODE IDENTIFICATION

    DTC Description Probable Cause
    71 Right Front Speed Sensor Signal Voltage Low Defective Right Front Speed Sensor, Incorrect Sensor Installation Or Defective Sensor Rotor
    72 Left Front Speed Sensor Signal Voltage Low Defective Left Front Speed Sensor, Incorrect Sensor Installation Or Defective Sensor Rotor
    73 Right Rear Speed Sensor Signal Voltage Low Defective Right Rear Speed Sensor, Incorrect Sensor Installation Or Defective Sensor Rotor
    74 Left Rear Speed Sensor Signal Voltage Low Defective Left Rear Speed Sensor, Incorrect Sensor Installation Or Defective Sensor Rotor
    75 Abnormal Change In Output Signal Voltage From Right Front Speed Sensor Defective Right Front Sensor Rotor
    76 Abnormal Change In Output Signal Voltage From Left Front Speed Sensor Defective Left Front Sensor Rotor
    77 Abnormal Change In Output Signal Voltage From Right Rear Speed Sensor Defective Right Rear Sensor Rotor
    78 Abnormal Change In Output Signal Voltage From Left Rear Speed Sensor Defective Left Rear Sensor Rotor
scientia non olet · About LEMON Manuals