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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 38 (Engine Control System Diagnosis - 1.6L (3 Of 3) (Except HEV)) >> DTC P2503: AMS No Battery Charge >> System Inspection

System Inspection

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  1. Engine starts.
  2. Maintain ENG RPM 2, 500 RPM over 2 minutes.
  3. Measure voltage between the battery terminal (+) and the battery terminal (-).

    Specification:  Approx. 12.5 ~ 14.7 V

  4. Is the measured voltage within specification?

    YES 

    • Substitute with a known - good battery sensor and check for proper operation. If the problem is corrected, replace battery sensor and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Check that the tension of drive belt, ENG RPM, fuse, terminal of battery, all terminals of generator are in good condition and Check for damaged harness and poor connection between generator and battery.

      If OK repair or replace generator and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

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