Test sequence

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Volkswagen GTI, 2004 Volkswagen Jetta, 2004 Volkswagen GTI, 2003 Volkswagen Jetta, and 2003 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Main Fuse Panel

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove fuse 29 from fuse holder.

NOTE:

Removing fuse 29 interrupts the voltage supply to the injectors.

Remove engine cover.

Fig 2: Identifying Ignition Coils

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Disconnect connectors from ignition coils 1...6.

NOTE:

Mark connector and component before disconnecting.

Remove ignition coils with final output stage for cylinders 1...6 using puller T10095.
Remove spark plugs with Spark Plug Removal Tool 3122B.
Have a second technician fully depress accelerator pedal.
Check compression pressure with compression tester VAG 1763.

NOTE:

Using compression tester → Operating instructions

Operate starter until tester shows no further pressure increase.

Compression pressure values

New: 10...13 bar

Wear limit: 7.5 bar

Permissible difference between all cylinders: 3 bar

Check DTC memory: → 01 ON BOARD DIAGNOSTIC (OBD)
Read readiness code: → 01 ON BOARD DIAGNOSTIC (OBD)
Generate readiness code again if DTC memory has been erased or engine control module separated from permanent positive supply: → 01 ON BOARD DIAGNOSTIC (OBD)