Nissan Sentra B18 (2020-2025) Service Manual: Abs Warning Lamp

Component Function Check

1. CHECK ABS WARNING LAMP FUNCTION

   1. Check that ABS warning lamp in combination meter turns ON for 1 second after ignition switch is placed ON.

      CAUTION:

      Never start the engine.

   Is the inspection result normal?

   YES >>

   Inspection End.

   NO >>

   Refer to Diagnosis Procedure.

Diagnosis Procedure

1. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY AND GROUND CIRCUIT

   1. Perform the trouble diagnosis for ABS actuator and electric unit (control unit) power supply and ground circuit. Refer to Diagnosis Procedure.

   Is the inspection result normal?

   YES >>

   GO TO 2.

   NO >>

   Repair or replace error-detected parts.

2. PERFORM SELF DIAGNOSTIC RESULT

   1. CONSULT

      1. Ignition switch OFF → ON.

         CAUTION:

         • Be sure to wait of 10 seconds after placing ignition switch OFF or ON.

         • Start the engine.

      2. Repeat step 1 two or more times.

      3. Select “Self Diagnostic Result” mode of “ABS”.

   Is any DTC detected?

   YES >>

   Check the DTC. Refer to DTC Index.

   NO >>

   GO TO 3.

3. CHECK ABS WARNING LAMP SIGNAL

   1. CONSULT

      1. Select “ABS”, “Data Monitor” and “ABS WARN LAMP” according to this order.

      2. Ignition switch OFF.

      3. Check that “Data Monitor” displays “On” for 1 second after ignition switch is placed ON and then changes to “Off”.

         CAUTION:

         Never start the engine.

   Is the inspection result normal?

   YES >>

   Replace the combination meter Refer to Removal & Installation (Type A) or Removal & Installation (Type B).

   NO >>

   Replace the ABS actuator and electric unit (control unit). Refer to Removal & Installation.

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