Removing and installing wiring harness for unit injectors — AUDI

🧭 Before you start

Fits: VW Transporter T5 (7H), VW Transporter T5 (7J)

Don't miss

• Only puller T10312 must be used to unplug electrical connectors on piezo unit injectors.
• Route central connector through opening in frame of mounting. Ensure it is seated correctly.
• When adapter ring is installed correctly the colour marked "shorter" stud faces 12 o'clock)

🔧 Engine codes this applies to

📋 Procedure

1. Move lock carrier into service position General body repairs, exterior50Body - front; Lock carrier - service position.
2. Remove intake manifold .
3. Remove engine cover panel and cylinder head cover .
4. Unplug electric multiway connector for unit injectors. To do so, pull release pin (arrow 1) and loosen knurled nut (arrow 2). [Note: Only puller T10312 must be used to unplug electrical connectors on piezo unit injectors.]
5. Prise off connector from unit injector using screwdriver (arrow). To avoid canting, support opposite side of connector with light finger pressure.

6. Locate special wrench T10211 on adapter ring and loosen by turning anticlockwise through 90° (arrow).
7. Unplug connector from cylinder head and remove entire prewiring.
8. Fit prewiring harness and tighten securing bolts.
9. Route central connector through opening in frame of mounting. Ensure it is seated correctly.
10. Tighten adapter ring with special wrench T10211 by turning 90° in clockwise direction. [Note: When adapter ring is installed correctly the colour marked "shorter" stud faces 12 o'clock)]
11. Tighten central connector on cylinder head and lock in place.
12. Install engine cover panel and cylinder head cover .
13. Install intake manifold .

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