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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 65 (Automatic Transaxle System Diagnosis (HEV)) >> DTC P0734: Gear 4 Incorrect Ratio >> W/Harness Inspection >> Signal Circuit Inspection

Signal Circuit Inspection

WARNING: This page is about a different variant/trim than selected.
  1. Connect scantool to Data Link Connector (DLC).
  2. Engine "ON".
  3. Select "Current Data" mode and monitor "Engine speed, Input speed sensor (PG-A), Output speed sensor (PG-B) and Gear position" parameter used select option.
  4. Engine speed up to about 2000rpm and check Input speed (PG-A) & Output speed (PG-B) are within specific at 4th speed of gear.

    Specification: 

    Output speed>(input speed+200rpm)/4th. gear ratio

    Output speed<(input speed-200rpm)/4th. gear ratio

    Fig 1: Scantool Display - Engine Speed, Input Speed Sensor (PG-A), Output Speed Sensor (PG-B) And Gear Position Parameter
    G10603514Courtesy of HYUNDAI MOTOR AMERICA
  5. Are measured Input speed (PG-A) & Output speed (PG-B) within specific?

    YES 

    NO