GU ZD30 Cranking but wont Run

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Originally Posted by Hodge

Yendor is your man here. He knows these things inside out then. I am glad and I hope it is only NATS stopping your engine from starting, as that is much much cheaper than the injector pump.

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Thanks mate. I'm new to this do I just ask him about it

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Originally Posted by Yendor

Does the red security light on top of the dash go out when you are trying to start the vehicle?

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Nah mate she doesn't :( and the light was hiding under the dash mat. I didn't even know it was there

If the red security light is still flashing when the engine is cranking NATS hasn't been deactivated and the vehicle will not start.

The main thing that goes wrong with NATS in the ZD30 is the IMMU (unit around the key barrel that reads the key).

It is also possible to have a faulty key. Do you have a second key? Have you tried starting the vehicle with it?

I have been told that some locksmith can check a key to make sure it is sending a signal. Not sure if this is correct as I haven't asked any or if they can check if the signal is correct.

There is a reset procedure in the owner hand book incase the key signal received interference from something. I don't thing this will work for you but it's still worth trying.

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Originally Posted by Yendor

If the red security light is still flashing when the engine is cranking NATS hasn't been deactivated and the vehicle will not start.

The main thing that goes wrong with NATS in the ZD30 is the IMMU (unit around the key barrel that reads the key).

It is also possible to have a faulty key. Do you have a second key? Have you tried starting the vehicle with it?

I have been told that some locksmith can check a key to make sure it is sending a signal. Not sure if this is correct as I haven't asked any or if they can check if the signal is correct.

There is a reset procedure in the owner hand book incase the key signal received interference from something. I don't thing this will work for you but it's still worth trying.

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The security stays on the whole time, it doesn't flash at all, and it stays on when cranking,

I tried the 2nd key as well and no good

and do you know where i can get a Moaners Manual as i bought it 2nd hand from a dealership and it didn't have one

This might have been done already. Have you disconnected the battery and left it for a couple of hours to reset everything. I'm grasping at straws here so someone may want to correct me if that not the way to go.

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Originally Posted by 4bye4

This might have been done already. Have you disconnected the battery and left it for a couple of hours to reset everything. I'm grasping at straws here so someone may want to correct me if that not the way to go.

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I reset the ecu via pins 1 and 8 at the plug in the fuse box and still has the fault codes and security light still stays on

Try this.......

Can anyone tell me what fault codes 1401 and 1405 mean? i get for 1401 EGR temp sensor/High EGR input and 1405 is DPFE sensor hose blocked or unplugged

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Originally Posted by 4bye4

This might have been done already. Have you disconnected the battery and left it for a couple of hours to reset everything. I'm grasping at straws here so someone may want to correct me if that not the way to go.

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I left it over night and still no good

I'll take it that the reset procedure I posted didn't work.

It's highly unlikely that both keys failed. If it was my vehicle I would try another IMMU.

You can't bypass NATS in the ZD30 like the NATS in the TD42. The ZD30 has an engine computer, NATS communicates with the engine computer telling it if it's OK to start.

The TD42 NATS is basically an added on (like an aftermarket alarm) that can be removed.