street_ride14

I'm hunting issues with my thermostat ground.
p28 ecu

I believe there are 4 wires attached to t-stat ground.
What are the wires that run to the thermostat ground?
What are the ECU pin numbers (obd1) that these wires lead to?
What color wires lead to t-stat ground?
Are the fuel injectors grounded here too?

Thanks guys

2point1

Thermostat grounds are for the ecu and main relay. They go to the ecu a23,24,a26 and b2. The injector grounds only go from the injectors to ecu.

What problem are you having?

street_ride14

I believe the thermostat ground was relocated by previous owner, there are no wires attached at factory t-stat ground location.
Car cranks, won't start, spark plugs are dry after cranking, not getting fuel to injectors, but have fuel at the rail and maintaining adequate fuel pressure.
I want to run new ground wires from thermostat ground to ecu and was wondering to which ECU pins.
You mentioned 3 pins, but there are 4 wires?

2point1

Yes forgot to put the b2 is all so a ground at the ecu from the thermostat.

Check to see if your getting 12 volts at the ecu a25 an b1. Before replacing the grounds.

street_ride14

a23, a24, a26, and b2 are the pin locations for the thermostat ground?

2point1

Yes sir. There's all so one that goes to the drivers side shock tower plug to main relay.

alextech

Ok, what if it does not have 12v on A25 and B1 with key off?

motoxxxman

it's not supposed to have power on a25 or b1 with key off.
the only pin that should have power with key off is d1

mike4456

ok what if you dont have 12 volts at them pins when key is on