Symptom Chart

2004 Nissan-Datsun Altima S, AutomaticSECTION Symptom Chart
SYMPTOM CHART

Symptom Malfunctioning part
ABS warning lamp stays on when ignition switch is turned on. Control unit power supply circuit Warning lamp bulb circuit Control unit or control unit connector Solenoid valve relay stuck Power supply for solenoid valve relay coil
ABS warning lamp stays on, during self-diagnosis. Control unit
ABS warning lamp does not come on when ignition switch is turned on. Fuse, warning lamp bulb or warning lamp circuit Control unit
ABS warning lamp does not come on during self-diagnosis. Control unit
Pedal vibration and noise -
Long stopping distance -
Unexpected pedal action -
ABS does not work. -
ABS works frequently. -
  • Depending on the malfunction points in the ABS actuator and electric unit (control unit), only the SLIP indicator lamp will turn OFF.
  • If an electronic malfunction occurs in the system components, the fail-safe function turns the ABS warning lamp ON.

Depending on the malfunction condition, ABS and EBD operate as follows.

  1. ABS is inactive, and EBD is active.
  2. Both ABS and EBD are inactive (normal braking status)
  3. With the above status, the self-diagnosis when the ignition switch is turned on and the vehicle is initially started is performed. ABS self-diagnosis noise may be heard as usual.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.