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I'm trying to figure out why a 2001 Highlander has no spark…

Customer Question
I'm trying to figure out...
I'm trying to figure out why a 2001 Highlander has no spark and refuses to start. I've changed the cam and crank sensor, had the computer checked, timing is correct, the wires from the sensor to the computer are good, but still no spark. Please help
Submitted: 1 month ago.Category: Toyota
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Answered in 2 minutes by:
1/3/2018
Toyota Mechanic: Jared D, ASE Certified Technician replied 1 month ago
Jared D
Jared D, ASE Certified Technician
Category: Toyota
Satisfied Customers: 2,095
Experience: Shop Supervisor at County Fleet
Verified

Good morning,

Do you have the 4 or 6 cylinder highlander?

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Customer reply replied 1 month ago
4 cylinder 2.4
Customer reply replied 1 month ago
I'm at work, can't use the phone right now
Toyota Mechanic: Jared D, ASE Certified Technician replied 1 month ago

Sorry, the phone call thing is automated- not generated by me.

I'm looking over the diagrams for the 4 cylinder. As far as you can tell everything is fine except spark right?

Does the check engine light blink while you are cranking the engine?

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Customer reply replied 1 month ago
No, it does not
Toyota Mechanic: Jared D, ASE Certified Technician replied 1 month ago

Does your model have the security light on the dash?

Passive security on this year model was an option so it might not have one.

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Customer reply replied 1 month ago
Already checked security and that's not the issue either.
Customer reply replied 1 month ago
The check engine light started to blink
Toyota Mechanic: Jared D, ASE Certified Technician replied 1 month ago

Sorry for the delay, this is a weird one. Normally when we have no spark it's a bad crank position sensor, but you already replaced that.

The PCM seems to be communicating normally with a scan tool right?

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Customer reply replied 1 month ago
It is, no fault codes registered. I work in a shop and believe me we've gone through the normal motions and still nothing
Toyota Mechanic: Jared D, ASE Certified Technician replied 1 month ago

Can you see RPM data on the scan tool while cranking?

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Customer reply replied 1 month ago
it registers. Which tells me the crank sensor is good
Toyota Mechanic: Jared D, ASE Certified Technician replied 1 month ago

Are you getting injector pulse?

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Customer reply replied 1 month ago
I'm getting injector pulse
Toyota Mechanic: Jared D, ASE Certified Technician replied 1 month ago

Are you getting power to the ignition coil?

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Toyota Mechanic: Jared D, ASE Certified Technician replied 1 month ago

12 volts on each one from the PCM, but no spark?

Very weird.

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Customer reply replied 1 month ago
Exactly my point, spark plugs are new as well. Can't figure out how this is possible
Toyota Mechanic: Jared D, ASE Certified Technician replied 1 month ago

Anything coming from the white wire on the ignition coils?

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Customer reply replied 1 month ago
What do you mean if anything is coming from the white wire?
Toyota Mechanic: Jared D, ASE Certified Technician replied 1 month ago

The white wire on the ignition coil connector is a signal wire that runs back to the PCM. It should have a voltage signal when cranking.

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Customer reply replied 1 month ago
I do get a voltage signal
Toyota Mechanic: Jared D, ASE Certified Technician replied 1 month ago

Everything is working.

12 volts on the IGN2 fuse?

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Customer reply replied 1 month ago
sir
Customer reply replied 1 month ago
Hello?!?
Toyota Mechanic: Jared D, ASE Certified Technician replied 1 month ago

I'm going to have to step out for a little bit.

If you have voltage and signals to the coils and no spark from any of them I would probably try swapping them out.

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Toyota Mechanic: Jared D, ASE Certified Technician replied 1 month ago

You have good solid ground on the white/black wire on each of the coils also right?

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