03NavigatorGuy
Full Access Members
I recently purchased a nice ’04 Navi with the above issues, from the owner who said he was tired of chasing issues and not having any success. It is very clean and rust free, and I’d love to see if I can, with some help from y’all here, figure things out, and where to start, as many things have been done, seemingly without confirming what was/is/are the real and continued issue(s).
History: Owner stated the first thing that happened was the instrument cluster went blank, then he stated he was having issues with it intermittently not starting, so he replaced the starter, the problem continued. he put new connectors on the battery side as he said the original were corroded, but problem contend. He then took it to a mechanic, who advised him it was “probably” the Central1Junction-Box. He had them instal a working “used” box, Navi seemed to start ok. Shortly there after the radiator started to leak so a new radiator was installed. The owner tell me that after the instal, the Navi would not crank. His mechanic advised him it was probably the ignition, so the ignition was replaced, and STILL no start, so he had it towed back home were it sat for a year till now. I noticed that it has had a new alternator, but not sure if the previous owner had that done to help resolve any of the above mentioned issues or simply because it failed.
Current Issues:
No Crank No Start - key in start position causes click in trailer-tow relay.
No communication to PCM from OBD2.
No power to fuel pump unless relay bypassed.
Gear selector won’t release when key on/brake pressed.
Instrument cluster will not illuminate.
Turn signals not working - flashers DO work.
HVAC panel has no power.
Items that DO work:
Power windows, door locks, seat, moonroof, Navigation/Stereo system, wipers, interior and exterior lights.
Security system light flashes at what appears to be a normal rate, definitely not fast.
What I have investigated/done:
Starter will crank engine when it is jumped.
Fuel pump will activate when relay is bypassed/ but no start issue still present.
Connections to PCM are tight.
Check all fuses to be good/replaced PCM power relay with new relay as a precaution.
Confirmed fuse 41 was not blown.
"Click" comes from Trailer-tow relay in CJB when key is turned to the start position.
Thanks in advance, for any helpful troubleshooting advice!
History: Owner stated the first thing that happened was the instrument cluster went blank, then he stated he was having issues with it intermittently not starting, so he replaced the starter, the problem continued. he put new connectors on the battery side as he said the original were corroded, but problem contend. He then took it to a mechanic, who advised him it was “probably” the Central1Junction-Box. He had them instal a working “used” box, Navi seemed to start ok. Shortly there after the radiator started to leak so a new radiator was installed. The owner tell me that after the instal, the Navi would not crank. His mechanic advised him it was probably the ignition, so the ignition was replaced, and STILL no start, so he had it towed back home were it sat for a year till now. I noticed that it has had a new alternator, but not sure if the previous owner had that done to help resolve any of the above mentioned issues or simply because it failed.
Current Issues:
No Crank No Start - key in start position causes click in trailer-tow relay.
No communication to PCM from OBD2.
No power to fuel pump unless relay bypassed.
Gear selector won’t release when key on/brake pressed.
Instrument cluster will not illuminate.
Turn signals not working - flashers DO work.
HVAC panel has no power.
Items that DO work:
Power windows, door locks, seat, moonroof, Navigation/Stereo system, wipers, interior and exterior lights.
Security system light flashes at what appears to be a normal rate, definitely not fast.
What I have investigated/done:
Starter will crank engine when it is jumped.
Fuel pump will activate when relay is bypassed/ but no start issue still present.
Connections to PCM are tight.
Check all fuses to be good/replaced PCM power relay with new relay as a precaution.
Confirmed fuse 41 was not blown.
"Click" comes from Trailer-tow relay in CJB when key is turned to the start position.
Thanks in advance, for any helpful troubleshooting advice!
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