1999 lx470 crank no start

[DIRTBIKEUSA]

crank, fuel prime, no spark, no cell. No obdII connect. Checked timing belt-good. Checked engine timing-good.

Key chip lost contact with immobilizer. Need Oem key. Duh!

 

[DIRTBIKEUSA]

Let the kid know he need is other master chip key. Beyond that I’m stumped .

Does anyone know if the OEM jumper port under hood will respond with no CEL..Will it force the ecm to do blink codes?

 

[kerrye]

That fuse box has the retrofitted relay to solve the crank/no start issue. Did you check the inline fuse in that retrofitted relay?

 

[DIRTBIKEUSA]

That fuse box has the retrofitted relay to solve the crank/no start issue. Did you check the inline fuse in that retrofitted relay?

Yes. I did. It was all good.

 

[DIRTBIKEUSA]

Yes. I did. It was all good.

Web swapped for a new relay cause the NAPA one had a loose pin..

 

[DIRTBIKEUSA]

No new updates. Kid still waiting on his OEM chip key to show up.

 

[DIRTBIKEUSA]

The owner was able to get the original chip key and it still won’t start. Not sure if the CEL has come on.

Does anyone have some advice to give. I think he’s a little miffed about it and I don’t want to give up on it.

 

[DIRTBIKEUSA]

It was suggested that the ECM is not powering up. Has anyone a link to the resource where I can check available voltage at the harness to the ECM? Or a trouble tree for that diagnostic? Thanks!

 

[kevgentile]

I posted this up for another member with a voltage problem but the same checks apply...

The manuals are free to download in the resource menu above.

Check out DI-279 and DI-280 of the manual. It goes through the necessary voltage checks at the ecm.
You should be getting a constant batt voltage with key out/off. You'll want to back probe the terminal while connected to the ecm.
I believe it's connector/pin E(9)-1.
-Voltage ok (9-14v) = bad ecm
-Voltage ng = efi 20 amp circuit short/fault

A bit of a pain to meter since they didn't leave a lot of wiggle room with the harness while connected to the ecm, and you'll need a small gauge pin to fit in the backside of the connector.

 

[kevgentile]

I spent a better part of a week pinning the ecm for voltage faults. I will tell you that the fsm can be a bit contradicting
in its voltage/ohm checks.

 

[DIRTBIKEUSA]

I posted this up for another member with a voltage problem but the same checks apply...

The manuals are free to download in the resource menu above.

Check out DI-279 and DI-280 of the manual. It goes through the necessary voltage checks at the ecm.
You should be getting a constant batt voltage with key out/off. You'll want to back probe the terminal while connected to the ecm.
I believe it's connector/pin E(9)-1.
-Voltage ok (9-14v) = bad ecm
-Voltage ng = efi 20 amp circuit short/fault

A bit of a pain to meter since they didn't leave a lot of wiggle room with the harness while connected to the ecm, and you'll need a small gauge pin to fit in the backside of the connector.

Ok great! Thanks a million. If he decides he wants to continue with me to sort it out I will do this.

 

[schmenkee]

Ok great! Thanks a million. If he decides he wants to continue with me to sort it out I will do this.

Any update on this?

 

[DIRTBIKEUSA]

Any update on this?

No updates. I think the guy got frustrated with it and doesn’t want to talk to me anymore. I sent him the link to the this discussion.