FINAL DRIVE & BRAKE GP 2391244 - Caterpillar

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Turn the ECS to the OFF/RESET position.
The input to the coil of the "ASOS" switch is wire T708 from terminal 6 of the timer. Connect a voltmeter between wire T708 on the "ASOS" switch and the engine ground.
Turn the ECS to the STOP position.
Activate the remote emergency stop switch.
Monitor the voltage on the voltmeter.
Deactivate the remote emergency stop switch.Expected Result:The voltage measures 24 3 VDC for approximately 2.5 seconds.Results:
OK - The voltage measures 24 3 VDC for approximately 2.5 seconds. The circuit is operating correctly to this point. Proceed to Test Step 6.
Not OK - The voltage did not measure 24 3 VDC. Proceed to Test Step 8.Test Step 6. Check for Voltage from the "ASOS" Switch to the Air Shutoff Solenoids
Turn the ECS to the OFF/RESET position.
Disconnect wire G708 from the "ASOS" switch.
Connect a voltmeter to the empty terminal on the "ASOS" switch. Connect the other lead from the voltmeter to engine ground.
Turn the ECS to the STOP position.
Activate the remote emergency stop switch.
Monitor the voltage on the voltmeter.
Deactivate the remote emergency stop switch.
Reconnect wire G708 to the "ASOS" switch.Expected Result:The voltage measures 24 3 VDC for approximately 2.5 seconds.Results:
OK - The voltage measures 24 3 VDC for approximately 2.5 seconds. The circuit is operating correctly to this point.Repair: Repair the wire G708 between the "ASOS" switch and wire G708 on pin I at connector