Nige
Senior Member
There is an Exclamation Point (aka Master Fault Light) on the Monitor Panel. It should light up along with all the other indicators on the panel when you first turn the key on as a self-test, then go out if there are no Active Codes. The big HOWEVER in all this though is what are known as Logged Codes, meaning they were Active once but are not Active at this time. A Logged Code can be very useful as a diagnostic guide even though it is not Active. Without either ET or the secondary panel there is no way of seeing Logged Codes.One question regarding machines without the diagnostic display. If there is a code on the machine doesn't it have a way to indicate to the operator that a code is stored? Like the check engine light on a car. I guess I am wondering why it is necessary to connect ET just to find out if you have codes, but then not surprised if that is the case.
Here's a question. Do you have an Operation & Maintenance Manual for your machine.? It should live in the pocket behind the seat but on uised machines it's often AWOL. You can download an O&M Manual (Pub. Ref. SEBU7494) from Cat in pdf form for $49 if you are interested. It would probably be the best money you ever spend on the machine.
EDIT: I just realized that your particular machine is a very early model (effectively an A model although the decals do not show it) not a C as per the thread title which was started by someone else and you piggy-backed on to it. You don't even have the Master Fault Light on your machine, neither do you have the TPS mounted on the throttle pedal. So as regards the root cause of your symptoms we are well & truly back to Square 1.