SuperC1

iTrader: (4)

My car quit on me today so I pulled out my laptop and pulled this code p0230. Fuel pump will not prime and I cannot get it to start. If I jump the fuel relay it starts fine but not when commanded from the pcm. I tried to turn it on with the scanner controls but no dice. The pump runs fine otherwise, so does this mean the fuel pump driver in my pcm is fried or what?

shoemike

iTrader: (25)

It's probably VATs.
Try cleaning the key "pellet" or push the key inwards it may not be fully seated in the ignition switch.

SuperC1

iTrader: (4)

It's not the vats, there is no security light on and it starts when I put the batterty charger on it. I bought a brand new battery and its still having issues. I'm thinking its a ground problem since the battery is in the back.

SuperC1

iTrader: (4)

I jumped it again at the relay so I could move it, the pump runs strong, so something else wierd is going on.

joecar

Replace the relay.

2xLS1

iTrader: (25)

Troubleshoot the problem with a meter or test light. It's a simple circuit and you said you have the ability to command the pump on.

http://www.gearchatter.com/viewtopic9151.php

http://www.gearchatter.com/si/372984.png

SuperC1

iTrader: (4)

Replaced the relay already and tested it with a dovm.
no dice. Not getting 12v at the relay from the PCM even when commanded.

joecar

Find the open circuit in circuit 465.

SuperC1

iTrader: (4)

What is circuit 465?

joecar

The 2nd url in post #6 (posted by 2xLS1) is a circuit schematic:

this schematic shows circuit 465 is the PCM fuel pump relay signal... i.e. the PCM 12V at the relay.

If you don't get this voltage at the relay, then you have to check if that wire is broken.

SuperC1

iTrader: (4)

Yea, thats my next step, if I can't find a broken wire anywhere then it looks like my pcm may be fried.

joecar

Also check that the pins in the relay socket and the PCM connector are good and make contact... PCM is last resort.

SuperC1

iTrader: (4)

Looks like my PCM is toasted no fire to the fuel pump. I disconnected the red connector and applied 12v to it and the pump ran fine. I went ahead and ordered a replacement PCM and now I'm waiting on it to come in so I can reflash my tune into it. This is the first time I've actually seen a PCM failure, I'm wondering what caused to fail.

joecar

Look at the PCM connector and the harness connector... do any pins show signs of burning or bending/breaking...?

SuperC1

iTrader: (4)

No damage at all, it looks brand new, its never been removed from the car.

BLK02WS6

iTrader: (2)

I actually saw this exact thing 4 or 5 years ago - flashed a borrowed PCM from another car to test it - it was a problem in the PCM... thought for srue it would have been the harness or pins - tried the PCM first cause it was quick and easy. Odd, but it happens...

Merkourios Koulianos

same problem with my 2010 tds , wont start..i check realays and fuses..fuel pump relay it was melt and burn..i replace it and it was fine for 3 days..and then dies..again..when i give power to relay works fine...possible pcm? or ignition key??

James Oliver

SuperC1

iTrader: (4)