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200V06330-5041
Sinotruk HOWO
| Attribute | Description |
|---|---|
| Part Name | Engine Distribution Housing / Engine Electrical Junction Box / Engine Fuse & Relay Enclosure |
| Common Names | Engine Power Distribution Box, Engine Control Module Housing, Engine PDM Shell |
| Function | Protects and organizes key electrical components that manage power delivery and signal routing to engine subsystems such as ECU, sensors, fuel pump, glow plug relay, starter relay, cooling fan, etc. |
| System Role | Centralized hub for engine-side electrical distribution; interfaces between main chassis harness and engine-mounted actuators/sensors |
| Mounting Location | Mounted on engine cylinder head cover, valve cover bracket, or side rail of engine block |
| Compatibility | Used with electronically controlled diesel engines (e.g., Weichai WP series, Cummins ISGe, MAN MC series) |
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⚠️ WARNING: Work involves high-current circuits and sensitive engine electronics. Disconnect battery first!
Park on level ground and turn off ignition.
Disconnect both battery terminals (start with negative).
Wait 2–3 minutes to allow capacitors to discharge.
Locate the box on the engine (usually near valve cover or front gear housing).
Remove any protective covers or brackets.
Clean dirt and oil from surrounding area.
Unplug main multi-pin connector(s) carefully.
Label sub-harnesses if multiple connections exist.
Inspect pins for corrosion, bending, or overheating signs.
Unscrew mounting bolts (M5/M6 typically).
Gently remove the unit — avoid pulling wires out of seals.
Note position of internal relays and fuses.
Place new unit into position.
Secure with original hardware — torque to ~8–10 N·m.
Replace sealing gasket if damaged.
Plug in all harnesses until they click.
Ensure grounding strap is reconnected securely.
Verify no exposed wires or stress on cables.
Reconnect batteries.
Turn key to ON — check for ECU self-test lights.
Start engine — confirm normal idle and system operation.
Use diagnostic tool to scan for DTCs (Diagnostic Trouble Codes).