Help with M923a2 non start issue please

[Daryl Webster]

I am getting no power to the dash, I replaced the alternator and the protective control box behind the washer fluid on the firewall. Problem started after replacing the alternator. Alternator was replaced because it went bad.
Anyone have any ideas?

 

[simp5782]

I am getting no power to the dash, I replaced the alternator and the protective control box behind the washer fluid on the firewall. Problem started after replacing the alternator. Alternator was replaced because it went bad.
Anyone have any ideas?

Remove the main power switch and ensure you have power coming into it and power leaving it when you flip the switch.

Do you hear the solenoids power up in the control box at all? I'm assuming not.

 

[silverstate55]

How old are your batteries, and what condition are they in? You may show some power at the dash, but your batteries may be low enough to not be able to retract the FSOV (Fuel Shut Off Valve) on driver’s side of engine. Aged batteries can cause the stock alternator to fry itself trying to keep up with charging defective batteries.

 

[Daryl Webster]

we check all of those things and there is power coming out of the switch, but still cant find the problem.
Any other ideas?
Thanks

 

[simp5782]

we check all of those things and there is power coming out of the switch, but still cant find the problem.
Any other ideas?
Thanks

Give me the answer on the following pins at the PCB plug with the dash switch on

Pin A :
Pin C:
Pin D:

Pin A is wire 569 this is the power from the switch on the dash.

Pin C is wire 81. This gets power directly from the. It has a branch off which is 81A that gives power to the main dash switch.

Pin D is wire 5, it is the power out of the PCB to the starter dash switch.

Tell me the voltage at those pins.

 

[simp5782]

Then at the dash starter switch.

Wire 5B does it have power to it?


Then check the gauges, does wire 27 (this goes to all gauges) have power on it?