Hey all,

Trying to diagnose a crank-no start issue on my company's forklift (TCM FHG18T2L). It's run strong since I started (at least 1.5 yrs) but maintenance has been completely neglected for at least a few years.

We recently changed the battery (to a regular automotive battery). After changing the battery, we are unable to get the forklift to achieve ignition. Cranks, no spark.

I'm a little out of my experience diagnosing this forklift. My scan tool doesn't recognize the ECM and I'm unsure if it's an issue with my specific scanner or if I need a more specialized computer? I'm unsure if it's throwing any codes, but due to the fact the coils have connection on the ground and hot sides, I'm fairly sure I can conclude the ECM isn't sending a signal.

Grounds are in good condition. Battery is new. Spark plugs are gapped correctly (though old).

Unsure where to go from here. Do I need to find a TCM or Nissan forklift scan tool? Could it be an issue with a fuel system or oil system sensor? Do I need to disassemble and clean the solenoid valve or vaporizer?

Any advice would be appreciated.