Checking wiring between 88-pin gearbox control unit and gearbox — AUDI
Checking wiring between 88-pin gearbox control unit and gearbox on Audi: factory workshop procedure. Full factory text, tools and checks.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📋 Procedure
Perform check if:
Final control diagnosis or
Electrical check indicates faults in or between gearbox and automatic gearbox control unit -J217.
Test requirements
Ignition off
Only connect test box V.A.G 1598/20 to 88-pin connector of gearbox wiring harness
Take measurements with test box V.A.G 1598/20 from outside vehicle
Remove noise insulation.
Remove holder -1- for noise insulation.
Checking wiring to 16-pin connector at gearbox
Twist bayonet lock -4- of 16-pin connector to release from gearbox.
Check for continuity in wiring by applying portable multimeter V.A.G 1526A or V.A.G 1715 between contacts of 16-pin connector and sockets of test box V.A.G 1598/20. Refer to table below for resistances.
Connector contact · Test box V.A.G 1598/20, socket · Specification · Measures if reading does not match specification
1 · 42 · ≤ 1.5 ω · - Use current flow diagram to eliminate open circuit in wiring
2 · 5 · ≤ 1.5 ω · Check connector for:
3 · 1 · ≤ 1.5 ω · - Contact corrosion
4 · 32 · ≤ 1.5 ω · - Ingress of water
5 · 16 · ≤ 1.5 ω · - Leakage
6 · 44 · ≤ 1.5 ω
7 · 29 · ≤ 1.5 ω
8 · 30 · ≤ 1.5 ω
9 · 33 · ≤ 1.5 ω
10 · 14 · ≤ 1.5 ω
11 · 4 · ≤ 1.5 ω
12 · 52 · ≤ 1.5 ω
13 · 22 · ≤ 1.5 ω
Connector contact · Test box V.A.G 1598/20, socket · Specification · Measures if reading does not match specification
14 · 21 · ≤ 1.5 ω
15 / Contact not used · - · - Use current flow diagram to eliminate open circuit in wiring
16 · 53 · ≤ 1.5 ω · - Check connector
Notes:
Wiring harness in gearbox must be checked if this wiring check does not reveal any impermissible deviations
=> Automatic Gearbox 01V Front and Four-wheel Drive; Repair Group 38; Removing and installing valve body
Automatic Gearbox 01V Front and Four-wheel Drive
Removing and installing valve body
Corresponding solenoid valves are only to be replaced following satisfactory checking of the wiring harness in the gearbox
=> Automatic Gearbox 01V Front and Four-wheel Drive; Repair Group 38; Removing and installing valve body
Automatic Gearbox 01V Front and Four-wheel Drive
Removing and installing valve body
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.
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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.