Hard start pin point test AF11 Fails-No voltage - Ford Powerstroke Diesel Forum
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Old 11-07-2012, 12:42 PM
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Hard start pin point test AF11 Fails-No voltage

Ok so I am troubleshooting my hard starting issue. I get no voltage when doing pinpoint test AF11. So the glow plug control module is not getting power. Is this caused by a broken wire somewhere, or some other component. Its starting to get cold here in PA, and I don't have the facilities to work on it right now. Any suggestions? Could I run a jumper wire or something?

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Old 11-07-2012, 07:03 PM
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Ahh so you made it all the way to AF11

So you're on pin 9 (red wire) of the black GPCM connector. With the key on, no voltage is present?

The PCM power relay controls this circuit so it needs to see the ignition on before voltage will be provided. This circuit is also shared with the MAF sensor, IPR, EGR and fan clutch so if voltage is present at all of those components then it only stands to reason there's a wiring concern. You may want to inspect for a break right at the connector where the wire is crimped into the pin. The GPCM wires are stressed pretty good and make a hard turn into the connector
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