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Problem Symptoms Table

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

If there are no DTCs output but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting example.

NOTE: When replacing the master cylinder solenoid, sensor, etc., turn the ignition switch off.

HINT:

Inspect the fuse and relay before investigating the suspected areas as shown in the table below.

Inspect each malfunctioning circuit in numerical order for the corresponding symptom.

PROBLEM SYMPTOMS TABLE - ANTI-LOCK BRAKE SYSTEM WITH EBD

Symptoms Suspected Areas
ABS does not operate
BA does not operate
EBD does not operate
  1. Check the DTC again and make sure that the normal system code is output.
  2. IG power source circuit
  3. Front speed sensor circuit Rear speed sensor circuit
  4. Check the hydraulic brake booster with the hand-held tester.

    If abnormal, check the hydraulic circuit for leakage.

  5. Front speed sensor Rear speed sensor
  6. Front axle w/ABS rotor bearing assy (Speed sensor rotor)

    Rear axle bearing assy (Speed sensor rotor)

  7. If the symptoms still occur even after the above circuits in suspected areas are inspected and proved to be normal, replace the master cylinder solenoid.
ABS does not operate efficiently
BA does not operate efficiently
EBD does not operate efficiently
  1. Check the DTC again and make sure that the normal system code is output.
  2. Front speed sensor circuit

    Rear speed sensor circuit

  3. Stop light switch circuit
  4. Check the hydraulic brake booster with the hand-held tester.

    If abnormal, check the hydraulic circuit for leakage.

  5. Front speed sensor Rear speed sensor
  6. Front axle w/ABS rotor bearing assy (Speed sensor rotor)

    Rear axle bearing assy (Speed sensor rotor)

  7. If the symptoms still occur even after the above circuits in suspected areas are inspected and proved to be normal, replace the master cylinder solenoid.
ABS warning light abnormal (Remains on)
  1. ABS warning light circuit
  2. Master cylinder solenoid
ABS warning light abnormal (Does not come on)
  1. ABS warning light circuit
  2. Master cylinder solenoid
ABS sensor DTC check cannot be done
  1. Check the DTC again and make sure that the normal system code is output.
  2. TC and CG terminal circuit
  3. If the symptoms still occur even after the above circuits in suspected areas are inspected and proved to be normal, replace the master cylinder solenoid.
VSC and/or TRAC does not operate
  1. Check the DTC again and make sure that the normal system code is output
  2. IG power source circuit
  3. Check the hydraulic circuit for leakage.
  4. Front speed sensor circuit

    Rear speed sensor circuit

  5. Deceleration sensor circuit
  6. Yaw rate sensor circuit
  7. Steering angle sensor circuit
  8. Yaw rate and deceleration sensor
  9. Steering angle sensor
  10. If the symptoms still occur even after the above circuits in suspected areas are inspected and proved to be normal, replace the master cylinder solenoid.
VSC TRAC warning light abnormal (Remains on)
  1. VSC TRAC warning light circuit
  2. Master cylinder solenoid
VSC TRAC warning light abnormal (Does not come on)
  1. VSC TRAC warning light circuit
  2. Master cylinder solenoid
VSC sensor DTC check cannot be done
  1. Check the DTC again and make sure that the normal system code is output,
  2. TC and CG terminal circuit
  3. If the symptoms still occur even after the above circuits in suspected areas are inspected and proved to be normal, replace the master cylinder solenoid.
Sensor and switch signal check cannot be done
  1. TS and CG terminal circuit
  2. Master cylinder solenoid
Brake warning light abnormal (Remains on)
  1. Brake warning light circuit
  2. Master cylinder solenoid
Brake warning light abnormal (Does not come on)
  1. Brake warning light circuit
  2. Master cylinder solenoid
Slip indicator light abnormal (Remains on)
  1. Slip indicator light circuit
  2. Master cylinder solenoid
Slip indicator light abnormal (Does not come on)
  1. Slip indicator light circuit
  2. Master cylinder solenoid
VSC OFF indicator light abnormal (Remains on) ((2)
  1. 4WD control (4WD) switch circuit ((3)
  2. VSC OFF indicator light circuit
  3. Master cylinder solenoid
VSC OFF indicator light abnormal (Does not come on) ((2)
  1. 4WD control (4WD) switch circuit ((3)
  2. VSC OFF indicator light circuit
  3. Master cylinder solenoid
AUTO LSD indicator light abnormal (Remains on) ((1)
  1. AUTO LSD indicator light circuit
  2. Master cylinder solenoid
AUTO LSD indicator light abnormal (Does not come on) ((1)
  1. AUTO LSD indicator light circuit
  2. Master cylinder solenoid
DAC indicator light abnormal (Remains on) ((3)
  1. 4WD control (L4) switch circuit
  2. 4WD control (4WD) switch circuit
  3. DAC indicator light circuit
  4. Master cylinder solenoid
DAC indicator light abnormal (Does not come on) ((3)
  1. 4WD control (L4) switch circuit
  2. 4WD control (4WD) switch circuit
  3. DAC indicator light circuit
  4. Master cylinder solenoid
Skid control buzzer abnormal
  1. Skid control buzzer circuit
  2. Master cylinder solenoid
(1) 2WD
(2) 4WD
(3) Multi Mode 4WD
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