FAN AS-RADIATOR & SUCTION 1N9421 - Caterpillar

The engine shuts down. Therefore, an unwanted voltage is present at RM-15 of the relay module. Check the related wiring for this unwanted short. If no short to ground (B-) is found in the related wiring, then replace the relay module. See Testing And Adjusting, "Relay Module - Replace". STOP.
Not OK - The engine does NOT shut down. Proceed to 4.
ETR System Check (continued). The engine remains running and the fault shutdown indicator is FLASHING.
Stop the engine. Turn the battery disconnect switch to OFF.
Remove all wires from terminal TS1-7 in the generator housing.
Turn the ECS to START and attempt to start the engine. Expected Result: The engine should NOT start. Results:
OK - The engine does not start. There is a error in the wiring or there is a short to +battery between TS1-7 and the relay module. On 3408 and 3412 engines, the auxiliary fuel control relay (AFCR) on the subpanel could be faulty. Troubleshoot and repair the wiring. See Testing And Adjusting, "Schematics and Wiring Diagrams". STOP.
Not OK - The engine starts and runs. Proceed to 5.
ETR System Check (continued). The engine remains running and the fault shutdown indicator is FLASHING.
Stop the engine. Turn the battery disconnect switch to OFF.
Remove both wires from the fuel solenoid.
Turn the ECS to START and attempt to start the engine. Expected Result: The engine should NOT start. Results:
OK - The engine does not start. Therefore, wire 850-907 or wire 907-950 is shorted to +battery in the engine harness. Troubleshoot and repair the wiring. See Testing And Adjusting, "Schematics and Wiring Diagrams". STOP.
Not OK - The engine starts and runs. Therefore, the fuel solenoid is stuck or otherwise faulty. Refer to the Engine Service Manual. STOP.
ETS System Check. This step continues troubleshooting from 1. The engine remains running and the fault shutdown indicator is FLASHING.
Stop the engine. Turn the battery disconnect switch to OFF.
Turn the ECS to STOP.
Measure the DC voltage of the batteries. Expected Result: For 24 volt systems, voltage should be from 24.8 to 29.5 DCV. For 32 volt systems, voltage should be from 33.1 to 39.3 DCV. Results:
OK - Proceed to 7.
Not OK - Voltage is NOT correct. See CID 168 in Testing And Adjusting, "Troubleshooting Diagnostic Codes". Note: On ETS fuel systems, if the GSC is turned off and the display area is blank, then the GSC is not able to shutdown the engine. Check for wiring errors in the power connections to the GSC and for discharged batteries.
ETS System Check (continued). The engine remains stopped. The ECS remains in the STOP position.
Push the emergency stop push button (ESPB).
At the fuel solenoid, measure the voltage across the terminals. Note: The emergency stop push button and the fuel control timer module will attempt to provide +battery to the fuel solenoid for 70 seconds. Pull out the emergency stop push button and then push the button in again in order to reset the timer if more time is necessary to