No bus on odometer, blinking engine light -- Help please!
#14
If you have spark at the plugs odds are the coil is fine. It should be a nice bright blue?
The PCM turns on the fuel pump relay when you turn the key ON but it will turn it off unless it's running or cranking after a few seconds.
Try this, unplug your crank position sensor and see if the the "no bus" goes away.
The PCM turns on the fuel pump relay when you turn the key ON but it will turn it off unless it's running or cranking after a few seconds.
Try this, unplug your crank position sensor and see if the the "no bus" goes away.
#15
#16
How about the fuel pump? Do you hear it?
If you have spark, all you need is fuel and it should fire up. Give it a shot of starting fluid and see what it does.
The ABS light is likely on as a result of the no bus message. It will come on with a communications error.
Do you want to check the 5 volt supplies? On the crankshaft and camshaft position sensors, pin #3, the orange wire should be +5v. Pin #2, the black with light blue wire is the sensor ground.
On the MAP, pin #3, again the orange wire is +5v. Pin #1, black with light blue tracer, is the ground.
It really looks like either something is shorting out the PCI bus, and it can be any module on it, like the CAB, PCM, CTM, Airbag, console, TCM, etc.
If you have spark, all you need is fuel and it should fire up. Give it a shot of starting fluid and see what it does.
The ABS light is likely on as a result of the no bus message. It will come on with a communications error.
Do you want to check the 5 volt supplies? On the crankshaft and camshaft position sensors, pin #3, the orange wire should be +5v. Pin #2, the black with light blue wire is the sensor ground.
On the MAP, pin #3, again the orange wire is +5v. Pin #1, black with light blue tracer, is the ground.
It really looks like either something is shorting out the PCI bus, and it can be any module on it, like the CAB, PCM, CTM, Airbag, console, TCM, etc.
#18
Disconnect the cam position sensor if you haven't. It controls the fuel sync and could short out.
After that, I'd be looking at the PCM as it should be turning on the fuel pump. I can't see it being a wiring problem.
Last edited by 00DakDan; 11-12-2013 at 11:34 PM.