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Old Aug 10, 2019 | 02:40 PM
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onehundred80
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Joined: Apr 2006
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From: Ontario
Default Re: Starter wont engage.

Originally Posted by RL67037
Thanks ala_xfire for the confirmation of what I am doing!!

UPDATE:

Once the battery was fully charged (per the battery charger indication), checking it with a DVM it is reading 12.7VDC. I was under the impression that it should be a bit more than 14VDC when fully charged?

I jumped Pin 6 of C106 (Engine side) to the car battery positive post and the starter cranked, so the starter is good.

I measured the voltage at Pin 6 of C106 (Engine Compartment Side) when the key is turned to start (several times) and I get about 1/2 second of between 12 and 13VDC (around 12.5) and then it drops to 0VDC, so the pulse module is allowing the voltage through but not for long - is that what it's supposed to do?

Since I was getting that 12.+VDC spike at C106, I connected C106 and tried to start the car and the starter would not engage at all.

I'm thinking it's the battery unless that pulse module is not allowing a long enough voltage when the key is turned, but if it's the battery, why would jumping the starter with the battery engage the starter (battery is strong enough) but going through the starting circuit not work? Also, even with that short spike of voltage from the pulse module, I would think the starter would at least bump a little. When I was jumping the starter to the battery, it would kick immediately when I would touch the jumper wire to the positive post - no hesitation.

Again - thanks in advance for your advice.
Forget the battery as it sounds OK to me. My battery failed once and I just heard clicking noises.
Have you checked for any codes that have been set, I am not sure if that starting circuit sets any codes, look though.
The pulse module should run for 3 or 4 seconds,I’ll check that figure. If the car starts the pulse module is switched off.
A failure of the pulse module will set a code B1421 if I have got the number correct.
Always check for fault codes before throwing time, money and frustration at a problem.
 

Last edited by onehundred80; Aug 10, 2019 at 02:46 PM.
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