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2001 wj 4.0 grand cherokee cranks but no start. Tried

Customer Question
2001 wj 4.0 grand...

2001 wj 4.0 grand cherokee cranks but no start.

Mechanic's Assistant: Will the headlights turn on? Is the battery fully charged?

Tried various scanners , no communication with pcm.

Mechanic's Assistant: What year is your Grand Cherokee?

2001 wj 4.0 6cyl. have tried 2 other start up kits, ie pcm key and key reader. and bcm.

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

Im a mechanic. and my mate is a auto elec. he has traced all pin ins and outs to pcm, seems all good, we have literally been on this for 6 weeks now, very frustrating.

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

Have also done crank sensor,

Submitted: 11 days ago.Category: Australia Car
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Customer reply replied 11 days ago
When using scanners we can communicate with ABS, Sentry Immobilizer, and bcm. And For some reason the overhead console says 0km to empty. we have at least half tank of fuel. we have bridged fuel pump relay. fuel pump OK, we have checked auto shut down relay and curcuit, all ok.
All fuses, relays, circuits all check out ok.
The vehicle has only 150,000 km on odometer, and is very clean with no aftermarket accessories fitted.
We have obtained wiring diagram circuits, which seem to conflict with the Australian market of this vehicle.
We know its a tough diagnosis for you. but, we are seriously at a loss to sort this problem.
Customer reply replied 11 days ago
Should add: Scanner responds with communication error to pcm !
Customer reply replied 11 days ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call.
Customer reply replied 11 days ago
Let me know if you need more information, or send me the service offer(s) so we can proceed.
Answered in 1 day by:
7/12/2018
AU Auto Mechanic: Amedee, Former ASE Master Tech replied 10 days ago
Amedee
Amedee, Former ASE Master Tech
Category: Australia Car
Satisfied Customers: 28,160
Experience: ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector
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Hello and welcome!

Thank you for your question. My name isCustomerand I will be happy to assist you today. I am reviewing the details now.

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AU Auto Mechanic: Amedee, Former ASE Master Tech replied 10 days ago

Does the engine have spark while cranking? How about fuel?

Are you saying that it does not communicate with the computer?

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