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I have a no spark condition on a 2000 Toyota 4runner. How do…

I have a no spark...
I have a no spark condition on a 2000 Toyota 4runner. How do I determine which igniter wires come from the ECM and which wires go to the coils?
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11/17/2017
HDGENE
HDGENE, ASE Master Tech/Toyota Certified
Category: Toyota
Satisfied Customers: 6,043
Experience: 28 years Auto experience, Ford, GM, Chrysler, Asian & European
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Hello, and thank you for using Just Answer! My name is***** me a few moments to review your question and Ill do my best to assist you.

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Customer reply replied 3 months ago
How do I determine whether the problem is with the ECM compared to the igniter?

The first thing to do would be is run a check for codes using a scan tool to determine if there is a problem causing the no start, loss of spark, check to see if you have an rpm signal using a scan tool and see if you have injector pulse using a noid light. Then you can see if you need to test the igniter circuit or not.

HDGENE
HDGENE, ASE Master Tech/Toyota Certified
Category: Toyota
Satisfied Customers: 6,043
Experience: 28 years Auto experience, Ford, GM, Chrysler, Asian & European
Verified
HDGENE and 87 other Toyota Specialists are ready to help you
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Dennis Gooch
Dennis Gooch, Master Technician
Category: Toyota
Satisfied Customers: 14
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Phone call session started
Customer reply replied 3 months ago
Approximately what time will you call?

I didnt accept the phone call, Did you need me to call, I gave you the basic information you need to start with. Phone calls cost an additional fee.

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Customer reply replied 3 months ago
I already made the payment and have not received the call. I paid for the answer and an additional $26 for the phone call

You were not charged for it. If i accepted the phone call you would have been charged for both the phone call and paid for the question at the same time. Any billing questions can be directed to***@******.*** ANy money on your account should still be in your account. If someone else picked up the call they would call you, but it wasnt me. I wont get paid unless you rate the question.

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Customer reply replied 3 months ago
The injectors are ok. Is continuity alone on the crank and cam sensors enough for test?

No, a scan tool will show if you are getting an rpm signal. the crank sensor will generate an ac signal voltage, faster the engine turns, the higher the ac voltage. A noid light will also show, if you have an rpm signal you will have injector pulse ( and should have spark)

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Customer reply replied 3 months ago
When I crank the engine, there is no change in the dash RPM. I thought I should see some change, no matter how little. I am thinking that the crank sensor is bad. Is there a way to pass signal to the igniter that simulates a signal from the ECM? What voltage and which wire do I apply the voltage?

No, you need to run through the diagnosis the right way. You cannot simulate an rpm signal. You will want to check for injector pulse as I mentioned and run a diagnsostic and look at live sensor data.

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Customer reply replied 3 months ago
Got it..OK Many Thanks.

You are welcome, thank you.

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HDGENE
HDGENE, ASE Master Tech/Toyota Certified
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