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Old 01-24-2017, 10:48 PM   #1 (permalink)
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Default help needed 2006 forenza code p0502

hi there.. I have a 2006 forenza and keep showing code p0502,,, speedometer works fine but I don't have speed reading on scanner does any one here had the same problem?? already try 2 ecm and still same issues....
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Old 01-25-2017, 05:17 PM   #2 (permalink)
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Wondering why you would start by replacing the most expensive part..

Would you consider checking the speed sensor on the transmission and the associated wiring?

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Old 01-26-2017, 08:41 PM   #3 (permalink)
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well I did check for signals al vss plug.... ground 12v. and 10v signal from ecm where present at the plug... did also check wiring diagram from alldata and cluster uses same signal from vss and pin 38 at ecm ... did check continuity on all wires all test ok w/no short to ground or power... wonder if alldata diagram it accurate lol how I said cluster works but ecm does not read speed and both uses same signal from vss....
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