You guys have the best posts I've seen online for trailblazers! You've saved me a few times. Than you all!
Initial issue was that my vehicle would crank but, not start. I almost pulled the fuel pump, but went through electrical testing.
I'm getting no power to the pcm b fuse for those 2 second it should be powering the fuel pump relay, when the key is turned on. No power when cranking the engineer either. I am getting 10 volts to the positive side of the PCM B fuse, but no ground. Zero volts at PCM when the first is in that slot. I'm just not sure if the PCM B fuse is supposed to be grounded on the other side of the fuse panel slot.
At the fuel pump relay I do have power at the battery power slot and the grounds all check out at the fuel pump relay as well.
At this point I'm thinking it's either the PCM itself or the fuel pump. Please help!
Initial issue was that my vehicle would crank but, not start. I almost pulled the fuel pump, but went through electrical testing.
I'm getting no power to the pcm b fuse for those 2 second it should be powering the fuel pump relay, when the key is turned on. No power when cranking the engineer either. I am getting 10 volts to the positive side of the PCM B fuse, but no ground. Zero volts at PCM when the first is in that slot. I'm just not sure if the PCM B fuse is supposed to be grounded on the other side of the fuse panel slot.
At the fuel pump relay I do have power at the battery power slot and the grounds all check out at the fuel pump relay as well.
At this point I'm thinking it's either the PCM itself or the fuel pump. Please help!