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VW 150-5 Workshop Manual - Zanshin

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Output on<br />

V.A.G 1552/VAS 5052<br />

18009 P1601<br />

Voltage supply relay -<br />

Terminal 30 -J317<br />

18026 P1618<br />

Glow plug relay -J52<br />

Short to positive<br />

Possible Cause(s) of<br />

Fault(s)<br />

♦ Voltage supply relay terminal<br />

30 (J317) defective<br />

♦ Relaysticks(sporadic)<br />

♦ Wiring has short circuit to<br />

positive<br />

♦ J52 defective<br />

Possible effects<br />

♦ Engine does not start<br />

♦ Poor driveability and engine<br />

stops<br />

♦ Preheating warning lamp<br />

flashes<br />

♦ No preheating<br />

♦ Poor cold starting<br />

behaviour<br />

Remedying the Fault<br />

- Check power supply of<br />

the control unit for diesel<br />

direct injection system<br />

⇒ page 23-41<br />

- Check J52<br />

⇒ page 01-33, Final<br />

control diagnosis<br />

01-29

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