Checking engine mounting — AUDI
Checking engine mounting on Audi: factory workshop procedure for engines AKC, AQF, AQG, AQH. Full factory text, tools and checks.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📐 20 workshop diagrams for AKC
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
AQF AQH ARU AKC AUW AVN AVP
(Not installed in all vehicles)
The hydraulically damped engine mountings with electric actuation prevent that oscillations of the engine are transferred to the body throughout the entire speed range.
In idling operation the engine mountings are soft.
In driving operation the engine mountings are hard.
Switch the ignition on.
Perform final control diagnosis and actuate engine mounting => Page
01-72
.
Final control diagnosis
⇒
Valve left for engine mounting -N144
Indicated on display:
Press ⇒key.
Final control diagnosis
⇒
Valve right for engine mounting -N145
Indicated on display:
Upon actuation of engine mounting, both solenoid valves should give a clearly audible click.
If specified value is not attained, perform the following tests:
Checking voltage supply of engine mountings
Disconnect connector from relevant solenoid valve.
Connect diode test lamp V.A.G 1527 between engine earth and socket 1 (positive) on connector using cables from adapter set V.A.G 1594.
Operate the starter for a few seconds. Engine may start.
The diode test lamp should illuminate.
If the diode test lamp does not illuminate, carry out the following tests:
Checking fuse for engine mounting.
=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
If the fuse is OK:
Check the wiring from socket 1 via the fuse to the fuel pump relay for continuity.
=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
Checking actuation of engine mounting
Disconnect connector from relevant engine mounting.
Connect diode test lamp V.A.G 1527 between sockets 1 (positive) and 2 on connector for intake air changeover solenoid valve using cables from adapter set V.A.G 1594.
Actuate final control diagnosis and actuate relevant engine mounting => Page
01-72
.
The diode test lamp should flash upon actuation of engine mounting.
If the diode test lamp is continuously lit:
Check wiring connections from socket 2 of the relevant connector for the engine mounting for earth short.
If the diode test lamp does not flash:
Checking wiring
Connect test box V.A.G 1598/31 to wiring harness for engine control unit; do not connect the engine control unit => Page
24-12
.
Check wiring connection of the relevant connector for engine mounting for open circuits as well as shorts to positive.
2-pin connector on wiring harness, contact · Test box V.A.G 1598/31, socket
Engine mounting 1 -N144 / 2 · 105
Engine mounting 2 -N145 / 2 · 116
Wire resistance: max. 1.5 Ohm
Rectify any open/short circuit as necessary.
=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
If no short or open circuit is found.
Replace the relevant engine mounting.
TorqFix answers live for your specific car — tell it the engine code and it serves the matching sequence, torque figures and wiring for that exact variant.
Ask about my car →Other AUDI procedures
- Testing injection quantity, leak tightness and spray pattern of injectors
- Checking fuel pump relay -J17 and relay actuation
- Checking lambda probe heating for lambda probes
- Checking accelerator position senders -G79 and -G185
- Removing and installing front exhaust pipe with catalytic converter (right-side)
- 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
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
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.