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code p1337 no spark cylinder1

scorsyboy

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Hi Rcz 1.6 156 petrol went into limp mode code p1337 coil is good and spark plug is good tested on other cylinders. when car is running voltage to all 3 pins on coil is around 13v which is the same for all 4 cylinders is this right. Cylinder 1 is getting same voltage as 2,3,4 but not producing spark any Ideas Guys please.
 

scorsyboy

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I have put a spare coil and spark plug onto it when I do that on the other 3 they spark when I ground the spark plug but not cylinder 1 I have also used noid light
 

scorsyboy

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I am sure that all 3 wires are not meant to have 12 volts or am I wrong
 

Chillipip

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I can’t remember who it was but someone had a link to the workshop manual and wiring diagrams. 12v on all three wires doesn’t sound right to me. I would think one would be earth.
 

scorsyboy

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Yes same here , but the other 3 cylinders have 12v on all pins and they are working fine. I thought 1 would be earth 1 would be battery voltage and 1 would be a trigger ??
 

scorsyboy

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I would love to know what voltage should be on the 3 wires when engine is running
 

JvdBosch

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According to the denso website:
The primary winding of an ignition coil will typically contain 150 to 300 turns of wire; the secondary winding will typically contain 15,000 to 30,000 turns of wire, or around 100 times more than the primary winding.

The magnetic field is initially created when the vehicle’s electrical system applies approximately 12 volts to the ignition coil’s primary winding. When a spark is required at a spark plug, the ignition system will switch off the current flow to the primary winding, which will cause the magnetic field to collapse. The collapsing magnetic field will induce a voltage into the primary winding in the region of 200 volts; but the voltage induced into the secondary winding will be approximately 100 times greater, around 20,000 volts.
So there will be 12V continuously, with dips to zero when a spark is required. Your multimeter most likely does not register these drops to zero.
 

scorsyboy

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Thing are going from bad to worse I was trying to identify the problem and I lost some of the electrics no heater blower inside cab the lights to it dont even work and the starter motor does not turn not even a click as if its not communicating with the ecu I am now ready to put a match to it please help
 
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