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Home >> Hyundai >> 1991 >> Excel GS, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Diagnosis & Overhaul - Km175, Km176 & Km177 >> Component Tests >> Transaxle Control Unit

Transaxle Control Unit

NOTE: For additional wiring and circuit information, see WIRING DIAGRAMS  .

Disconnect both harness connectors from Transaxle Control Unit (TCU). Connect known good TCU to harness connectors and road test vehicle. If malfunction does not occur, replace original TCU. If problem occurs, original TCU is okay. Check sensors and wire harness.

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