Medium and Heavy Trucks
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This machine can be very difficult to troubleshoot without knowing the fault codes. The codes are best retrieved using the CAT ET software available to dealers. Some access can be done through the monitor. I will attach a file that shows how to view the codes with the monitor.
You said it lost power. Do you mean the engine died or stalled? Or did the transmission quit pulling? Did any warning lights come on? Are any still on now? Does the monitor have the service book icon next to the hour meter reading? Have you checked the starter solenoid wire for power when the keyswitch is in crank position? (White wire is the solenoid wire.) Did you check the battery cables on the starter for being loose? Have you tested the grounds on the engine and frame to the battery?
Please post the full machine serial number with your reply. It is the only way I can help you as these machines have multiple versions.
I am sorry for the late reply. I have been without power for the past day and have just got everything back working.
I did miss the attachment, I will be below this post.
Check for power from that keyswitch start wire (Orange wire marked 307) at the machine ECM. It is pin #1 of the J2 connector.
If it has power to this wire with the key switch in start position, place a jumper to the wire at pin #7 on the same J2 connector (Green wire marked 306) and try to start engine.
If nothing happens, go the the start relay (located on the back of the engine) and check for power to the 306 green wire at terminal #5 of the connector (relay post 86) when key switch is in start position. If it has power and it still does not crank, jump red wire to the white wire and see if engine cranks. (Red wire wire on relay must have battery voltage.)
If it still is not cranking, check starter connections. White wire marked 304 is to the starter relay and should engage starter.
Ok, Thanks for the update. I am only available at night as I work in the field during the day. If this is a problem I will OPT-OUT of this question.