Ignition coil pack wire volts?

2008 NISSAN ALTIMA
127,500 MILES • 2.5L • 4 CYL • 2WD • AUTOMATIC
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JEGGY
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#1 and #2 coil packs melted some and positive wire for 3 pin connector was smoking when tried to start. With key off all positive pins at connectors had 12.50 volts then I turned key to on position and all 4-coil pack positive wires read .02 volts. Originally it had code P0301. I really don't have any knowledge of electronics except basic positive and negative.
Oct 30, 2024 at 3:14 AM
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BORIS K
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Hello,

If the coil packs for cylinders 1+2 have been damaged, I would suggest replacing these.
Next check the condition of the connectors and wiring to them.
On each coil connector pin 1 is the trigger wire, pin 2 is a black wire to ground, pin 3 is a red/white wire 12V supply. 12V is supplied from the ECM relay in the IPDM, see wiring information below.
If wiring looks damaged, suggest fitting a connector repair kit, trim back the damaged wiring.
Connector kits are available online.

See good video:
https://youtu.be/Ozo6YkSRdZM?si=yFW-o_CXD9TOKmB9

How to test wires:
https://www.2carpros.com/articles/how-to-check-wiring

Cheers, Boris
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Oct 30, 2024 at 10:36 AM
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JEGGY
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Thank you, sir, I will get on this as soon as I can in about 2 hours... I'll let you know how it's going.
Oct 30, 2024 at 12:13 PM
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JEGGY
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I've ordered (4) new Hitachi ignition coil packs..also (4) new wire connector pigtails.
Oct 30, 2024 at 5:00 PM
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BORIS K
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Hello,

Thank you for the feedback.
Please let us know if you require any other information.

Cheers, Boris
Oct 31, 2024 at 9:30 AM