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Jake
Jake, Nissan Technician
Category: Nissan
Satisfied Customers: 3646
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: 4 months ago.
Category: Nissan
Expert:  Clifton B. replied 4 months ago.

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

Expert:  Clifton B. replied 4 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 4 months ago.
It is back in original
Customer: replied 4 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 4 months ago.

ok so it will not crank at all

Customer: replied 4 months ago.
No Crank
Expert:  Clifton B. replied 4 months ago.

do you need a phone call ?

Expert:  Clifton B. replied 4 months ago.

if so then please just accept the offer i sent

Customer: replied 4 months ago.
No, and NO and NO Membership
Customer: replied 4 months ago.
Just need answer now based on my $20 dollars
Customer: replied 4 months ago.
U there
Expert:  Clifton B. replied 4 months ago.

yes

Customer: replied 4 months ago.
I put it back no CRANK when I turn Key
Expert:  Clifton B. replied 4 months ago.

and the fuse still blow

Expert:  Clifton B. replied 4 months ago.

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

Customer: replied 4 months ago.
Now the 10 Amp for TCM.. Hold let me put in reverse
Expert:  Clifton B. replied 4 months ago.

ok

Customer: replied 4 months ago.
Reverse light on DASH or behind truck.. , no reverse light
Customer: replied 4 months ago.
TCM use still good, no reverse light
Expert:  Clifton B. replied 4 months ago.

you replace the tcm inside the trans ?

Customer: replied 4 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 4 months ago.

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

Customer: replied 4 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 4 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 4 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 4 months ago.
why did it Start yesterday in LIMP mode each time I change the FUSE.
Expert:  Clifton B. replied 4 months ago.

you will have to push it in .

Customer: replied 4 months ago.
It should still start, shouldnt it
Expert:  Clifton B. replied 4 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 4 months ago.
why did it start 3 times yesterday in LIMP MODE 3 gear when I changed the fuse
Customer: replied 4 months ago.
u there
Customer: replied 4 months ago.
Can I bypass the IPDM and Start the car , like I have seen on some o your messages
Customer: replied 4 months ago.
Are u still Answering
Expert:  Clifton B. replied 4 months ago.

yes i ma sorry

Expert:  Clifton B. replied 4 months ago.

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

Expert:  Clifton B. replied 4 months ago.

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

Customer: replied 4 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 4 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 4 months ago.
Hi Clifton, I was not finished a couple days ago, but when I tried reaching you I got no response.
Customer: replied 4 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 4 months ago.
Still getting no response
Customer: replied 4 months ago.
I am just waiting here again for an answer
Customer: replied 4 months ago.
How long do I need to wait for a response
Customer: replied 4 months ago.
Clifton u there
Customer: replied 4 months ago.
I am really going to request my money back and rate you because this is bad business
Customer: replied 4 months ago.
Clifton
Customer: replied 4 months ago.
U gonna answer my question
Expert:  Jake replied 4 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 4 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 4 months ago.
why can they not bypass the Serial port of fix the port
Customer: replied 4 months ago.
U there
Expert:  Jake replied 4 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 4 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 4 months ago.
Shouldn't the dealer be able to figure that out
Customer: replied 4 months ago.
u there

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