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| Bridge contacts “1” and “65” of the tester box, using measuring tool set -VAG 1594C-. |
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| Unplug connectors from injectors. |
Note | After switching on the ignition, the fuel pump will be working continuously despite the engine being stationary, for the following reason: After switching on the ignition, the fuel pump relay receives positive voltage from the junction box. It receives negative supply through the wiring bridge of the tester box. |
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| Checking injectors for leakage (visual check). Only 1 to 2 drops per minute must emit from each valve when fuel pump is running. |
| If the fuel loss is greater: |
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| Switch off ignition and replace the leaking injector. |
Note | As a rule of thumb, always use new oil seals. |
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