2002 saturn L300 3.0L crank,but no start

I'm working on a 2002 saturn l300 with a 3.0 liter motor. car
cranks,but no start. i have proper fuel pressure,and ignition spark,
and power to the injectors.after connecting a noid light to injector
harness,i found to have no ground on the ecm side of the harness(ecm
directly controls the injectors)i checked the coolant temp sensor and
the intake air temp sensor(found both to be in spec), the crank
position sensor has an ac wave, but not sure if it's in spec or
not.connectors and wires from the ecm to crank position ohm out
ok.ckps ohm seems low(spec is 800-1200 ohms, i have .866,but still get
a signal) im thinking it's a crank position sensor or a bed ecm. any
ideas for further testing?

johnathan wrote:
> I'm working on a 2002 saturn l300 with a 3.0 liter motor. car
> cranks,but no start. i have proper fuel pressure,and ignition spark,
> and power to the injectors.after connecting a noid light to injector
> harness,i found to have no ground on the ecm side of the harness(ecm
> directly controls the injectors)i checked the coolant temp sensor and
> the intake air temp sensor(found both to be in spec), the crank
> position sensor has an ac wave, but not sure if it's in spec or
> not.connectors and wires from the ecm to crank position ohm out
> ok.ckps ohm seems low(spec is 800-1200 ohms, i have .866,but still get
> a signal) im thinking it's a crank position sensor or a bed ecm. any
> ideas for further testing?

Check the anti-theft system

On Feb 6, 10:41*am, johnathan > wrote:
> I'm working on a 2002 saturn l300 with a 3.0 liter motor. car
> cranks,but no start. i have proper fuel pressure,and ignition spark,
> and power to the injectors.after connecting a noid light to injector
> harness,

Usually the term "noid light" means a dedicated test bulb assembly
that fits the injector connector and connects to both terminals at the
same time. If this is the case, how did you determine "power to the
injectors" with a noid light, if in fact the PCM control terminal is
not toggling ground?

>i found to have no ground on the ecm side of the harness(ecm
> directly controls the injectors)i checked the coolant temp sensor and
> the intake air temp sensor(found both to be in spec), the crank
> position sensor has an ac wave, but not sure if it's in spec or
> not.connectors and wires from the ecm to crank position ohm out
> ok.ckps ohm seems low(spec is 800-1200 ohms, i have .866,but still get
> a signal) im thinking it's a crank position sensor or a bed ecm. any
> ideas for further testing?

I wouldn't go very far without a good scan tool. In fact I wouldn't
start working on this problem without one.