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Can I get the wiring diagram for the ECM and injectors?

Tiny
MSTHITZ3
  • MEMBER
  • 2005 PONTIAC GRAND PRIX
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 220,000 MILES
Replaced the crankshaft position sensor and now it's throwing a code that none of the injectors are firing. It cranks but does not turn over. Don't know if the ECM or injectors are bad? Going to test the injectors with a Noid pulse light.
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Thursday, January 25th, 2024 AT 12:52 AM

1 Reply

Tiny
BORIS K
  • MECHANIC
  • 762 POSTS
Hello,

Suggest to first check that fuse F20(15A) in the under-hood fuse block is still intact.
See diagrams below.

How to check:
https://www.2carpros.com/articles/how-to-check-a-car-fuse

If fuse is in order next check that you have 12V ignition supply at each injector at pin A, pink wire.

This can be done using a test light or voltmeter.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester
and
https://www.2carpros.com/articles/how-to-use-a-voltmeter

How to access the injectors and replace if necessary:
https://youtu.be/ddl25XShw2w?si=zm1sI_k7Tk9ar5RA

Cheers, Boris
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Thursday, January 25th, 2024 AT 6:21 AM

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