3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
I've never seen the sensor go without generating a CEL, so I'd think if the truck is not starting, but not coming up with a CEL, I'd start by troubleshooting elsewhere. But there are always exceptions...
That's what I was thinking as well. I've got a no crank condition and the service manual say's the following:
The ground circuit for the coil within the ASD relay is controlled by the Power-train Control Module (PCM). The PCM operates the ASD relay by switching its ground circuit on and off. The ASD relay will be shut–down, meaning the 12–volt power supply to the ASD relay will be de-activated by the PCM if:
1. The ignition key is left in the ON position. This
is if the engine has not been running for approximately
2. There is a crankshaft position sensor signal to
the PCM that is lower than pre-determined values.
I'm getting momentary signal to ground, just long enough to engage the starter, it's starts to turn over then stops. So I figured maybe it's not getting a signal from the crank position sensor. But I'm not getting a DTC for it.
What would cause the PCM to stop providing this path to ground?
1998 Dakota 5.7 Hemi, 6.1 cam, smoothed & painted LX intake, Powertrax Lock-rite locker, Viper fan, Dynamic grounding, SST dual exhaust, custom fan shroud & CAI, hood nosed, tailgate and fenders shaved, Sir Michaels rollpan My Hemi build thread