How to Check a Automatic Transmission Shock Shift

How to Check a Automatic Transmission Shock Shift.

 

Model : Hyundai Sonata

Year Model: 2009

Fuel: Gasoline

Displacement: 2400cc

1) Condition

1. Automatic Transmission Shock Shifting.
2. Delay Shifting.

2) Auto repair and Cause

2. Due to A/T relay pin poor contact.

3) Study guide and Diagnosis

1. Check G-Scan
   = P0880 TCM Power Signal Error Open/Short (GND)
2. Replace with new = The same
3. Retightened the pin = Test the problem suddenly disappear.

How to test the code P0880 TCM Power Signal Error Open/Short (GRD)?

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