LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 1996 >> RAV4 2D Utility, AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Diagnosis & Testing >> Speed Sensor Diagnostics

Speed Sensor Diagnostics

NOTE: While diagnosing speed sensors, brake system functions as a conventional system.
  1. Ensure battery voltage exists. Turn ignition on. Ensure ABS light illuminates, then goes out after about 3 seconds. If ABS light does not illuminate, check fuse, bulb and wiring harness. See ABS WARNING LIGHT CIRCUIT in CIRCUIT TESTS .
  2. Turn ignition off. DO NOT  remove short pin from DLC1. Using a jumper wire, jumper terminals Ts and E1 of DLC1. DLC1 is located in engine compartment on left side of engine. See Figure. Engage parking brake. Start engine. Ensure ABS light blinks 4 times per second. If ABS light does not flash, go to ABS WARNING LIGHT CIRCUIT under CIRCUIT TESTS . If ABS light flashes, go to next step.
  3. Drive vehicle straight ahead above 28 MPH for several seconds. Stop vehicle. Jumper terminals Tc and E1 of DLC1. See Figure. If all sensors are okay, a normal DTC is displayed, (a cycle of .25 seconds on and .25 seconds off). If a malfunction is detected, 4 seconds will elapse and ABS light will begin to flash a 2-digit DTC. First number of blinks will equal first digit in a DTC. After a 1.5-second pause, second number of blinks will equal second digit in a DTC.
  4. If 2 or more DTCs are stored, there will be a 2.5-second pause between each DTC. After all DTCs are flashed, there will be a 4 second pause and all DTCs will repeat.
  5. Record DTCs. Turn ignition off. Repair as necessary. See SPEED SENSOR DTCS . Remove jumper wire from DLC1. Clear DTCs. See CLEARING DTCS .
scientia non olet · About LEMON Manuals