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Jake
Jake, Nissan Technician
Category: Nissan
Satisfied Customers: 3849
Experience:  Experienced collision repair technician, Pulaski Tech graduate and DSM hobbyist.
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2007 Nissan Frontier Wont Crank unless I bridge Pin 21 and

Customer Question

2007 Nissan Frontier Wont Crank unless I bridge Pin 21 and 19, White and Grey Wire o the IPDM, but does NOT start
Submitted: 10 months ago.
Category: Nissan
Expert:  Clifton B. replied 10 months ago.

hi my name is ***** ***** i can help

Expert:  Clifton B. replied 10 months ago.

can you please put the car back to the original condition so we can look into the cause of the problem ??

Customer: replied 10 months ago.
It is back in original
Customer: replied 10 months ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  Clifton B. replied 10 months ago.

ok so it will not crank at all

Customer: replied 10 months ago.
No Crank
Expert:  Clifton B. replied 10 months ago.

do you need a phone call ?

Expert:  Clifton B. replied 10 months ago.

if so then please just accept the offer i sent

Customer: replied 10 months ago.
No, and NO and NO Membership
Customer: replied 10 months ago.
Just need answer now based on my $20 dollars
Customer: replied 10 months ago.
U there
Expert:  Clifton B. replied 10 months ago.

yes

Customer: replied 10 months ago.
I put it back no CRANK when I turn Key
Expert:  Clifton B. replied 10 months ago.

and the fuse still blow

Expert:  Clifton B. replied 10 months ago.

put the car in reverse and tell me if the reverse lights work ?

Customer: replied 10 months ago.
Now the 10 Amp for TCM.. Hold let me put in reverse
Expert:  Clifton B. replied 10 months ago.

ok

Customer: replied 10 months ago.
Reverse light on DASH or behind truck.. , no reverse light
Customer: replied 10 months ago.
TCM use still good, no reverse light
Expert:  Clifton B. replied 10 months ago.

you replace the tcm inside the trans ?

Customer: replied 10 months ago.
NO, but the car was starting yesterdsy and would only drive in 3 gear limp mode. Each time I want to start I had to rewire the fuse but now it wont Crank and Fuse still good. How can I start
Expert:  Clifton B. replied 10 months ago.

did you check the coolant and trans fluid to see if they are mixing

Customer: replied 10 months ago.
No Mix, but I suspect , because I did a Bypass 1 year ago. I need to start to put the car in the Garage that drop the Valve body but It wont start
Expert:  Clifton B. replied 10 months ago.

the problem is cause by a bad /shorted tcm this tcm is built into the valve body so you will need to replace the valve body for the car to start

Expert:  Clifton B. replied 10 months ago.

this is causing a can communication problem and the starter is control by the tcm so as long as the tcm is bad the car will not start

Customer: replied 10 months ago.
why did it Start yesterday in LIMP mode each time I change the FUSE.
Expert:  Clifton B. replied 10 months ago.

you will have to push it in .

Customer: replied 10 months ago.
It should still start, shouldnt it
Expert:  Clifton B. replied 10 months ago.

no it should not. again the starter is control by the signal form the tcm and at this point the ecm and other computers can't communicate with the rest of the system so no it should not start

Customer: replied 10 months ago.
why did it start 3 times yesterday in LIMP MODE 3 gear when I changed the fuse
Customer: replied 10 months ago.
u there
Customer: replied 10 months ago.
Can I bypass the IPDM and Start the car , like I have seen on some o your messages
Customer: replied 10 months ago.
Are u still Answering
Expert:  Clifton B. replied 10 months ago.

yes i ma sorry

Expert:  Clifton B. replied 10 months ago.

because the short was not causing the fuse to blow right away now it is

Expert:  Clifton B. replied 10 months ago.

it will not start because the ecm do not even know that your turning the key to start position

Customer: replied 10 months ago.
How do I BYPASS the IPDM. I can get the car to crank but wont start when I Bridge Pin 21 and 19
Expert:  Clifton B. replied 10 months ago.

you can only bypass the starter circuit the ipdm power up everything you can bypass it plus the tcm is your problem so bypassing the ipdm will not fix it not even soi it will start

Customer: replied 10 months ago.
Hi Clifton, I was not finished a couple days ago, but when I tried reaching you I got no response.
Customer: replied 10 months ago.
This is still the issue with NO CRANK, after blowing fuse #49, now after replacing #49 , I get no Crank and the Fuse does not blow anymore
Customer: replied 10 months ago.
Still getting no response
Customer: replied 10 months ago.
I am just waiting here again for an answer
Customer: replied 10 months ago.
How long do I need to wait for a response
Customer: replied 10 months ago.
Clifton u there
Customer: replied 10 months ago.
I am really going to request my money back and rate you because this is bad business
Customer: replied 10 months ago.
Clifton
Customer: replied 10 months ago.
U gonna answer my question
Expert:  Jake replied 10 months ago.
Hey there new expert here.Bridging those 2 terminals is simply bypassing the starter relay in the IPDM. The TCM is not sending the park or neutral signal to the IPDM CPU so it's not going to start because there relay will never energize. I have seen this a hundred times, but mostly from cross contamination issues.The only way to bypass the IPDM is to jump the pins just like you already did. This sends power from ignition to starter, granted you obviously can't keep the jumper in.
Customer: replied 10 months ago.
Here is what I took the car to the dealer and they tell me they cannot comm
unicate with any module , its 2 days now. How can the dealer not figure out why the cannot communicate and fix that to find the issue
Customer: replied 10 months ago.
why can they not bypass the Serial port of fix the port
Customer: replied 10 months ago.
U there
Expert:  Jake replied 10 months ago.
No communication can be for different reasons. A bad control unit or a damaged CAN line. Sometimes it's as simple as performing a CAN check and unplugging the control unit that is not responding and the others will then communicate.
Customer: replied 10 months ago.
As afar as they tell me is thay cannot communicate to the car.. Where should I start I f I get my car back
Customer: replied 10 months ago.
Shouldn't the dealer be able to figure that out
Customer: replied 10 months ago.
u there