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No Communication on my 1999 Nissan Altima. Ecm. No spark or…

Customer Question
No Communication on my...

No Communication on my 1999 Nissan Altima

Mechanic's Assistant: Are you fixing your Altima yourself? What have you tried so far?

Ecm

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

No spark or fuel . Replace the Distributor crank sensor fuse box

Mechanic's Assistant: Does the vehicle stall at low speeds? Does it sputter?

No Start condition

Submitted: 1 month ago.Category: Nissan
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Answered in 2 minutes by:
3/18/2018
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago
Clifton B.
Clifton B., ASE Master Auto Tech
Category: Nissan
Satisfied Customers: 4,681
Experience: ASE Master Certified Tech, Nissan Master Certified Tech, 12 yrs. experience in auto repair.
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hi my name is ***** ***** i will be helping you today

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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

are the radiator fans on when the key is on ? did you check power and ground to the ecm ?

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Customer reply replied 1 month ago
No Radiator fan
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

did you check power and ground to the ecm ?

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Customer reply replied 1 month ago
No radiator fan doesn’t turn on
Customer reply replied 1 month ago
How will you go about checking that ? Is there a fuse to the ecm ?
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

you will have to check the wire at the ecm and yes there are fuses to the ecm

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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

let me get you a diagram for the ecm power and grounds

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Customer reply replied 1 month ago
Where is it Located?
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

getting the info now do you have a volt meter ?

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Customer reply replied 1 month ago
I do
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

the ecm is located under the radio area on the floor

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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

r u there ?

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Customer reply replied 1 month ago
Can you break that down in details
Customer reply replied 1 month ago
already have the ecm out
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

ok the top of the diagram are all power to the ecm so when you turn the key on you should have 12 volts there except for pin number 4 that is a ground when the key is on power when the key is off

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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

all pins on the bottom are grounds key on and off

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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

the second diagram is the pic of the ecm connector this will tell you the location of the pin in the connector so match up the wire color and pin number location to be sure you have the correct wire

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Customer reply replied 1 month ago
Ok I will get it test an get back to you
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

ok

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Customer reply replied 1 month ago
113 is the only one with power
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

is the key on when your checking

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Customer reply replied 1 month ago
Ignition is on
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

not making since recheck pin 36 again

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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

sorry that is pin 38 not 36

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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

red wire

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Customer reply replied 1 month ago
No pwe on 36
Customer reply replied 1 month ago
On power on 36
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

you should be checking 38 red wire not 36

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Customer reply replied 1 month ago
Ok checking
Customer reply replied 1 month ago
No power either
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

check fuse 25 in the fuse box inside the car

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Customer reply replied 1 month ago
Ok
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

l​et me know

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Customer reply replied 1 month ago
Fuse is good
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

ok so looks like you have two broken wires the white and blue wire and the red wire . i have never seen the red wire brake but it do run into the same harness and connector as the white and blue one so it can . this wire always brake under the battery area where the harness run down below the radiator . so you will have to remove the battery locate the harness cut it open fine the two wire and pull on then they should come apart then you can locate the other ends and reconnect them

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Customer reply replied 1 month ago
Ok I will check an let you know
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

ok

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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

i need a wider view of the area around the harness

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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

look like something was fix there before

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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

yes that wire don't look too good just fine the red and the white and blue and pull on them but a little muscle into it if they are broken they will come apart

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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

matter a act just pull on all the wire one by one

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Customer reply replied 1 month ago
I did none of the wires seems to be broken
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

ok fine that wire red and the white and blue and check for power key on check right where you have the harness apart

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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

and please fix that wire ti will short out

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Customer reply replied 1 month ago
Ok . With ign on blue/white has power red doesn’t
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

then that red wire may be broken up and not down you have to check that going back to the fuse box inside the car the white one check the going to the relay on the passenger side

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Customer reply replied 1 month ago
Ok will check that
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago
Ok
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Customer reply replied 1 month ago
Ok I will check an let you know.Do you have a picture of the location of the wire on the fuse box?
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago
I will check that for you do the white wire first check it where the harness bent to go under the radiator
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Customer reply replied 1 month ago
Ok I will
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

cool

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Customer reply replied 1 month ago
I search all the wires . Can’t find a broken wire
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

open the harness under the rad and check for open there key on

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Customer reply replied 1 month ago
Where is that located?
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

same harness under the radiator

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Customer reply replied 1 month ago
Ok I will do an get back to you tomorrow
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

ok

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Customer reply replied 1 month ago
Is there any additional stuff that I should be checking
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

no we just need to know the reason there is no power on the wires

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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago

we will work with the blue and white first

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Customer reply replied 1 month ago
Hi good afternoon
Customer reply replied 1 month ago
Checking all my wire again
Customer reply replied 1 month ago
Still couldn’t find any wire that is broken
Customer reply replied 1 month ago
When do you say blue an white do you mean blue wire with white stripe?
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago
White wire blue strip
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Customer reply replied 1 month ago
Ok I check all the wire there is nothing that I see that’s broken. Is there an relay , fuse or switch that can cause this problem?
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago
Did you check the white and blue wire for power
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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago
Please do check it where you open the wire if you have power go under the radiator open the harness and check again
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Customer reply replied 1 month ago
power is on the white/blue wire when ign is on
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago
Where did you check it at
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Customer reply replied 1 month ago
At the connection next to the battery
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago
Ok now I need you to check it again where the harness runs under the radiator
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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 1 month ago
If you have power on the wire at the connection next to the battery and no power at the ecm the wire is broken we just need to find where
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Clifton B.
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Clifton B., ASE Master Auto Tech
Category: Nissan
Satisfied Customers: 4,681
4,681 Satisfied Customers
Experience: ASE Master Certified Tech, Nissan Master Certified Tech, 12 yrs. experience in auto repair.

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