Volkswagen Golf/Jetta 2 manual

Warm-up valve - testing
Fuel and exhaust systems - K-Jetronic fuel injection - 8 valve engines / Warm-up valve - testing


1 Detach the distributor HT lead and earth it.

2 With the engine cold, detach the wiring connector from the warm-up valve (see illustration).

11.2 Warm-up valve
11.2 Warm-up valve

3 Connect a voltmeter across the terminals of the warm-up valve connector and operate the starter. The voltage across the terminals should be a minimum of 11.5 volts.

4 Switch the ignition off and connect an ohmmeter across the terminals of the warm-up valve (see illustration). If the meter does not indicate a resistance of about 20 to 26 ohm, the heater coil is defective and a new valve must be fitted.

11.4 Warm-up valve heater coil resistance test
11.4 Warm-up valve heater coil resistance test


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