Stumped on NO START!

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#11

07-29-2021, 11:03 AM

bismic

Senior Member

Join Date: Mar 2017

Posts: 369

Quote:

Originally Posted by Norman G

Thanks for the feed back! Meaning what though… I could have a bad replacement injector #5 coil in addition to initial one being bad? 32 pin connector C1388c has 5 ground wires (BK/PK) & 4 power wires (DG/LG) which come from FICM Relay switched power… & 1 power wire from Relay - fused feed… lastly pin 7 (WH/BK) has power from start & run. When I ohm these out it they all come very close to .21 - .27 ohms. (assuming I’m doing it correctly) This is from 12 pin plug to 32 pin connector… Does that sound right… meaning wires are good & not the problem?

I’m confused about that now!

My apologies. I missed the part where you installed a new OEM injector. I always have to get the manual out to check the wire colors and pin numbers.

I think I have a wiring diagram for the FICM connectors and injector wires. Let me find it and post.

https://mid-atlanticema.org/wp-conte...Tech-Guide.pdf

C1388B is the connector that "feeds" injector #5:
C1388B (X-2) Connector: Injector Control, Cyl. 2,3,5,8 (Middle plug)

Pin 1, TN/LG is the "open coil" ground
Pin 5, LB,BK is the "close coil ground
Pin 21, DB/OG is the "open coil" power
Pin 22, DG,LG is the "close coil" power

Last edited by bismic; 07-29-2021 at 11:42 AM.

#12

07-29-2021, 11:32 AM

bismic

Senior Member

Join Date: Mar 2017

Posts: 369

Connector C1388C is for the connection/communication with the PCM connector C1381c. Six wires: network communication lines (3 of them), CMP signal, CKP signal, ground.

Last edited by bismic; 07-31-2021 at 12:34 PM.

#13

07-29-2021, 11:35 AM

bismic

Senior Member

Join Date: Mar 2017

Posts: 369

Quote:

Originally Posted by Norman G

I believe you have no issues with C1388c. IMO you need to test the wires from C1388b to injector #5. A specific injector code will not be PCM related.

For injector #5 - it involves pins 1,5,21,22 on the FICM connector C1388b:
pin 1 on 1388b goes to pin 2 of the injector connector C1185
pin 5 on 1388b goes to pin 4 of the injector connector C1185
pin 21 on 1388b goes to pin 1 of the injector connector C1185
pin 22 on 1388b goes to pin 3 of the injector connector C1185

Additionally, since it is a contribution code, it may not even be electrical.

Last edited by bismic; 07-31-2021 at 12:36 PM.