Ls 400 won't run
04-16-23, 06:49 PM
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Ls 400 won't run
95 Ls 400 , driving one day and it just died and I smelled electrical burn , pulled ecu and sure enough capacitor leaked and burnt the board , I had another on hand and put it in , now when I hook obd reader it says no link , I have checked fuses and all good , still won't start , no power to fuel pump , any help would be appreciated , I tried to bypass by jumping b+ to fp with no luck then checked voltage from b+ and ground and got.38 with key on ? Where am I losing voltage? Before I lose my mind
Last edited by Gregs95; 04-16-23 at 09:48 PM.
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as99east (04-19-23)
04-20-23, 04:03 PM
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The ecu was original one that came with car, I had put the one that burned out in car about 8 months prior , I'm aware of serial nos matching , have new battery but no power to pump
04-20-23, 04:05 PM
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Still having issues with my ls400
The ecu was original one that came with car, I had put the one that burned out in car about 8 months prior , I'm aware of serial nos matching , have new battery but no power to pump
I also have no power to fuel pump relay at fuse block with key on , I have refurbished ecu (lifetime warranty) still "no link"
I have no spark also , is there a security cut-off switch or something , I've checked the fuses under hood and under dash drivers side , help please
I also have no power to fuel pump relay at fuse block with key on , I have refurbished ecu (lifetime warranty) still "no link"
I have no spark also , is there a security cut-off switch or something , I've checked the fuses under hood and under dash drivers side , help please
Last edited by Gregs95; 10-01-23 at 06:37 PM. Reason: More info
10-01-23, 06:38 PM
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95 ls400 "no link" message on code reader
The ecu was original one that came with car, I had put the one that burned out in car about 8 months prior , I'm aware of serial nos matching , have new battery but no power to pump
I also have no power to fuel pump relay at fuse block with key on , I have refurbished ecu (lifetime warranty) still "no link"
I have no spark also , is there a security cut-off switch or something , I've checked the fuses under hood and under dash drivers side , help please
I also have no power to fuel pump relay at fuse block with key on , I have refurbished ecu (lifetime warranty) still "no link"
I have no spark also , is there a security cut-off switch or something , I've checked the fuses under hood and under dash drivers side , help please
10-01-23, 08:06 PM
#7
Regarding no communication with the ECU - What code reader are you using (brand and model no.)? Confirm that your code reader is SAE J1978 compliant.
A wiring diagram (Engine Control) for a 1995 model year might be helpful.
A wiring diagram (Engine Control) for a 1995 model year might be helpful.
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10-02-23, 10:54 AM
#8
95 Ls 400 , driving one day and it just died and I smelled electrical burn , pulled ecu and sure enough capacitor leaked and burnt the board , I had another on hand and put it in , now when I hook obd reader it says no link , I have checked fuses and all good , still won't start , no power to fuel pump , any help would be appreciated , I tried to bypass by jumping b+ to fp with no luck then checked voltage from b+ and ground and got.38 with key on ? Where am I losing voltage? Before I lose my mind
I would think that the '95 and '98 are wired similarly.
'98 Electrical Service Manual
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