BOSCH Cis Injection System - AUDI & VOLKSWAGEN: Testing: Notes

CAUTION: Before making any electrical tests on an engine that is not running, but has ignition "ON", disconnect positive wire from alternator and high tension cable from terminal 4 of ignition coil.

NOTE: Cold start valve receives power from terminal 50. All other electrical components of fuel system receive positive current from the pump relay. Terminal 30 is permanently connected to positive current, terminal 50 only while starter is operated (connected to control circuit of starter); and terminal 15 only when ignition is ON.