The automatic transmission valve body wiring harness is a crucial electrical interface, connecting solenoids, sensors, and switches to the TCM (Transmission Control Module). Key points:

1. Function – Transmits signals for solenoid activation (shift control, pressure regulation) and sensor feedback (speed, temperature).

2. Components – Includes terminals, connectors, and shielded wires to prevent EMI interference.

3. Common Issues – Broken wires, corroded pins, or poor connections causing erratic shifts, limp mode, or DTCs (e.g., P0750 series).

4. Durability – Designed for high-temperature, fluid-exposed environments (ATF-resistant insulation).

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