Checking exhaust temperature sender: Audi A6 C5 2.7 (AJK, APB, ARE, AZA, …)

🧭 Before you start

Fits: Audi A6 C5 (4B)

• Renewed: exhaust temperature sender

Don't miss

• Disregard (items 2, 3).
• Connect adapter cableV.A.G 1598/31 (test box) to connectors of wiring harness; do not connect engine control unit. Connect earth clip of test box to earth (not shown in illustration).

🔧 Engine codes this applies to

📐 20 workshop diagrams for AJK

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

📋 Procedure

1. Switch off ignition.
2. Detach engine cover panel (A) by removing bolts (arrows).
3. Unplug electrical connector on control unit of relevant exhaust temperature sender. [Note: Disregard (items 2, 3).] [Note: Disregard (arrows).] [Note: The voltage supply for the exhaust temperature sender is taken from fuel pump relay J17]
4. Connect voltage testerV.A.G 1527B between contact (3) of electrical connector for exhaust temperature sender 1G235 or exhaust temperature sender 1, bank 2G236 and engine earth.
5. Operate the starter briefly.

6. Refer to current flow diagram to check for open circuit in wiring from contact (3) of connector via fuse to fuel pump relay J17.
7. Repair wiring connection if necessary.
8. Connect adapter cableV.A.G 1598/31 (test box) to connectors of wiring harness; do not connect engine control unit. Connect earth clip of test box to earth (not shown in illustration).
9. ⚠ To prevent damage to electronic components, select appropriate measuring range before connecting measuring leads and observe test requirements. — Check for open circuit and short to positive or earth in the following wiring:
10. Repair wiring connection if necessary.
11. Renew exhaust temperature sender: left-side , right-side .

Other AUDI procedures

• Checking Hall sender – Audi A6 C5 2.7
• Aligning tailpipes - vehicles with visible tailpipes · 1 torque figures
• Removing and installing oil pressure switch F1 – Audi A8 D3
• Renewing oil seals for camshafts – Audi A6 C5
• Checking intake air temperature sender G42 – Audi A6 C5
• Removing and installing toothed belt – Audi · 56 torque figures
• Removing engine – Audi A8 D3 · 41 torque figures
• Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
• Installing engine – Audi A8 D4 · 36 torque figures
• Removing and installing camshaft timing chain · 29 torque figures