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Saturday, August 7, 2010

How to repair communication error on GDS.

How to repair communication error on DGS?

 

Model: Hyundai Sonata(FL)

Year Model: 2009

Fuel: Gasoline

Displacement: 2400cc

Subject: GDS(Global Diagnostic System) Communication error.

1) Condition

  1. GDS can not communicate with ECM.

2) Cause

  1. Open circuit in DLC (Data Link Connector) K-Line wire.

3) Diagnosis

  1. Check the fuse related to ECM – Normal.
  2. Check the DLC connector pin – Normal.
  3. Check the K-Line, communication terminal using oscilloscope in GDS.
    = No output signal detected (Spec. 5V in IG “ON” condition).
  4. 5V output signal from K- Line terminal that is connected to multi-purpose check connector.
  5. Check for a circuit between DLC K-Line and MCC K-Line with multi meter = open circuit.

4) Guide to Repair

  1. Repair DLC wire.
  2. Communication OK.

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