Discussion:
engine cranks no power to coil

Ser#b875b03690d 2.4 gm lpg. Engine cranks no start. No power to ignition coil. New cam and crank sensor. Sent engine ecm out for testing came back with every thing good.engine has oil pressure 30 psi. On the left side of engine and transmission in the engine compartment there is a 5 prong wire connector that nothing plugged into it. It looks like there was a relay plugged into it. Harness has a tag on it #cps 206 any help is appreciated thanks
  • Posted 19 Mar 2025 01:27
  • Modified 19 Mar 2025 05:48 by administrator
  • By jerryb
  • joined 23 Jul'14 - 7 messages
  • New Mexico, United States
jerry berg
Showing items 1 - 1 of 1 results.
Jerry,

CPS 206 is for a relay. Install relay into connector and see if truck starts. This supplies power to the ECU which send it throughout the engine. If you install relay and engine does not start, check fuse 6 inside the PDM. Should be a 20 amp fuse. Good Luck.
  • Posted 25 Mar 2025 00:57
  • By Fishmech
  • joined 12 Jul'17 - 370 messages
  • Virginia, United States
The hard to do we do right away. The impossible just takes a little longer.

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