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Checking delivery rate of fuel pump, engine code CAYC — VW

Checking delivery rate of fuel pump, engine code CAYC on VW: 14 steps, engines CAYC. What to remove, in what order, and what to check after.

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

14 steps 1 engine code engine codes merged from 2 documented variants

🧭 Before you start

Fits: VW Passat B7 saloon (362, 2010–2014), VW Passat B7 Variant (365, 2010–2014), VW CC (358, 2012–2017)

  • Special tools named: VAS 6551/1

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  • Pull fuel supply line (black or black marking) (3) off fuel delivery unit. Separate plug-in connectors .
  • The fuel pump is now activated for 30 seconds.

🔧 Engine codes this applies to

CAYC

📋 Procedure

  1. Pull fuel supply line (black or black marking) (3) off fuel delivery unit. Separate plug-in connectors .
  2. Collect escaping fuel with a cleaning cloth.
  3. Connect connection (A) of pressure testerVAS 6551 with line VAS 6551/1 to open end of fuel delivery unit.
  4. From connection (B), route hose adapterVAS 6551/2 into a ≤ 3-litre measuring container (3) and hold there.
  5. Switch on pressure testerVAS 6551 by pressing On/Off button.
CAYC? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Open shut-off taps "“B”" + "“C”" of pressure testerVAS 6551.
  2. Switch ignition on.
  3. Connect vehicle diagnostic tester and carry out guided function "“Checking electronic fuel pump(s)”". [Note: The fuel pump is now activated for 30 seconds.]
  4. Carefully open shut-off tap (B) completely.
  5. Slowly close shut-off valve (B) while taking pressure reading shown on pressure testerVAS 6551. Set specification of 5 ± 0.2 bar by closing carefully.
  6. Drain measuring container.
  7. Therefore, also connect multimeterV.A.G 1526 to outputs (1 and 5) of test instrument/DSO adapter 5-pinVAS 5565.
  8. Carry out in the guided function "“Checking electronic fuel pump(s)”"
  9. Compare the amount of fuel delivered with the read value from the table.

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.