06 cayman refuses to start

[Cayman51]

Hi to the greater knowledge.

our 06 cayman 36PDQ has decided to not start.

The starter motor is good and have good voltage throughout the bus,

the ignition switch is also good.

I’ve checked all fuse and relay’s I can find but am stumped why she won’t go.

Any ideas?

Mike

[Doug and Nicki]

Are you getting good engine rotation with the starter? Slow turnover is a problem for diesels.

[Cayman51]

hi guys,

if I bridge the starter motor it turns no problem, just nothing on the key.

there's a feed coming from the ignition key but it just doesn't make it the rear.

been at it for 2 days and don't seem to be getting anywhere.

were full time aswell.

 

mike

[Ivan K]

Do you have wiring diagrams?  The start signal from key switch should go through trasmission neutral lockout relay and possibly an other start solenoid before making it to the starter solenoid. 

[timaz996]

Mike, if you have a rear start switch in the engine compartment try starting the coach from there with the ignition key on. I had the same problem as you are dealing with now and it was the front/rear switch in the engine compartment. That was the problem. 

Edited September 11 by timaz996

[Cayman51]

Does anyone know where the neutral lockout relay is ?

wiring diagram says front distribution box but can’t see it?

Don’t have rear engine start , but thanks for that idea

[Ivan K]

48 minutes ago, Cayman51 said:

Does anyone know where the neutral lockout relay is ?

wiring diagram says front distribution box but can’t 

Typically it should be just like any other automotive bosh relay but I can't tell you where. I would guess you have a bunch of them there up front (but mine is in the engine room near a smaller start solenoid), could you possibly trace it by wire color from the diagram?

[timaz996]

This is where mine is at. Top row of relays, third from the right across from top.

Edited September 11 by timaz996
added text

[Cayman51]

Thank Tim, mines a lot different from yours, but it does give me some ideas

[Gary Cole]

You likely have a parking brake interlock relay.   It's near the parking brake  air valve.

[Cayman51]

I’ll check it out,thanks

[Robert92867]

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2007 5.9L Cummins Fault Code

[Cayman51]

Hi guys ,

thanks for all the suggestions and ideas of what to try, but I found the problem.

Turns out I had four broken crimp connections hidden in the engine bay,

all sorted now😀🤪