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Checking charge pressure control solenoid valve N75: VW Golf IV / Bora (AGP, AGR, AHF, ALH, …)

Step-by-step checking charge pressure control solenoid valve N75 for the VW Golf IV / Bora: 14 steps.

Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.

14 steps 9 engine codes engine codes merged from 4 documented variants

🧭 Before you start

Fits: VW Golf IV / Bora (1J)

🔧 Engine codes this applies to

AGPAGRAHFALHAMFANYAQMASVAYZ

📐 34 workshop diagrams for AGP

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

Checking charge pressure control solenoid valve N75 — AGP · diagram 1
Checking charge pressure control solenoid valve N75 — AGP · diagram 2
Checking charge pressure control solenoid valve N75 — AGP · diagram 3
Checking charge pressure control solenoid valve N75 — AGP · diagram 4
Checking charge pressure control solenoid valve N75 — AGP · diagram 5
Checking charge pressure control solenoid valve N75 — AGP · diagram 6
Checking charge pressure control solenoid valve N75 — AGP · diagram 7
Checking charge pressure control solenoid valve N75 — AGP · diagram 8
+ 26 more diagrams
🔒 34 workshop diagrams for this job Ask about your VW AGP — free or sign up free to see the drawings

📋 Procedure

  1. Switch off ignition.
  2. Pull connector off charge pressure control solenoid valve.
  3. Measure resistance between valve contacts.
  4. Renew charge pressure control solenoid valve N75.
  5. Switch on ignition.
AGP? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Measure supply voltage between valve connector (contact 1) and engine earth. Specification: approx. battery voltage
  2. Switch off ignition.
  3. Connect test box V.A.G 1598/22 to control unit wiring harness.
  4. Check wiring between text box and connector for open circuit using current flow diagram. (Contact 1+socket 2 and 28) and (contact 2+socket 15) wire resistance: max. 1.5 Ω
  5. Also check wiring for short to one another, short to earth and short to battery positive. Specification: ∞ Ω
  6. Connect test box V.A.G 1598/31 to control unit wiring harness.
  7. Check wiring between text box and connector for open circuit using current flow diagram. (Contact 1+socket 1 and 2) and (contact 2+socket 62) wire resistance: max. 1.5 Ω
  8. Also check wiring for short to one another, short to earth and short to battery positive. Specification: ∞ Ω
  9. Renew diesel direct injection system control unit J24823
Workshop diagrams

Ask TorqFix about your VW AGP — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.

Ask about your VW AGP — free → or sign up free to see the drawings

Other VW procedures

Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.

Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com

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Workshop data on this page last updated 20 Sep 2026.