Trouble shooting P1500 starter signal circuit.

Tiny
WANDYDEE
  • MEMBER
  • 2003 CHEVROLET SPARK
  • 130,000 MILES
P1500 starter signal circuit, my car difficult to engine starting. This situation if weather 20celcius cool and rain. If normal weather 30degree Celcius. My car no problem starter. I think my motor starter is good.

(chevrolet spark, year:2003, 800cc, engine :F8CV, mini MPV)

i have been change new accu ready 13, 8 volt, 4pcs spark, clean distribution
i try : push and run to my car in first gear. My car is easy starting.

how to fix?

thanks
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Monday, February 27th, 2012 AT 8:05 AM

5 Replies

Tiny
KHLOW2008
  • EXPERT
Our database does not have any information on your vehicle but P1500 is for vehicle speed sensor under OBD-II generic codes.

Do you mean you are not able to crank when weather is cool or rainy?
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Monday, February 27th, 2012 AT 1:46 PM
Tiny
WANDYDEE
  • MEMBER
Thanks sir. Chevrolet spark similar to daewoo matiz/bug.

Yes the starter does crank but machine do not start in cold and rainy weather. Do you think 800cc, engine :F8CV has speed sensor?
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Tuesday, February 28th, 2012 AT 9:34 AM
Tiny
KHLOW2008
  • EXPERT
As long as the engine uses fuel injection system, yes, you should have a speed sensor but they do not cause non starting situations.

Reconfirm the trouble code.

Since problem is temperature related, I would suspect the Engine Coolant Temperature sensor to be a more likely cause of the problem.
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Tuesday, February 28th, 2012 AT 1:24 PM
Tiny
WANDYDEE
  • MEMBER
Thanks sir. Code error still: P1500.I think Engine Coolant Temperature sensor for knowing engine overheating.(Part:water temperature sensor)to display temperature on the dashboard (hot or cool)

i want to know. My problem electronic or machine?

Thanks
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Wednesday, February 29th, 2012 AT 5:24 AM
Tiny
KHLOW2008
  • EXPERT
ECT is for telling the engine computer the operating temperature and this would allow the computer to control the injectors opening time to enrich or lean out the mixture. A faulty sensor would confuse the computer and might result in over rich condition which wuld flood and not allow engine to start.

This part is different from the temperature sending unit, which is for the dash indicator.

Since the problem is non starting intermittently, it should be electrical.
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Wednesday, February 29th, 2012 AT 11:26 AM

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