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What faults will occur if the transmission wiring harness is damaged?

1 Answers

LaAlessandra

07/30/25 8:12am

Damage to the automotive transmission wiring harness can cause issues such as poor contact, signal interruption, open circuits, and short circuits to ground. Once the transmission control unit detects these problems, it will "activate emergency mode," also known as "gear lock." After the gear is locked, symptoms may include gear shifting impact, weak acceleration, inability to drive at high speeds, high engine RPM with low vehicle speed, and significantly increased fuel consumption. Transmission Wiring Harness: It is the main network of the automotive electrical system. Without the wiring harness, there would be no automotive circuits. The transmission wiring harness typically consists of contact terminals (connectors) made from stamped copper material, crimped to wires and cables, and then covered with molded insulators or additional metal casings. These components are bundled together to form a circuit connection assembly. Transmission: It is a gearbox that changes the transmission ratio and the direction of motion. Located between the clutch and the central drive, its main functions are: to alter the vehicle's driving force and speed (gear shifting) without changing the engine's RPM and torque; to allow the vehicle to reverse (direction change); and to enable the engine to remain running while the vehicle is stationary (neutral gear).

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