HARNESS AS-SENSOR 4469103 - Caterpillar

24 3 VDC.Repair: The wire 810-BR(Brown) and/or the connectors between the ECM and the ether start relay need repair. Inspect the wiring and connectors between the ether start relay and the connector at the ECM. Repair the connectors or wiring and/or replace the connectors or wiring.STOP
Not OK - The voltage at the ECM is not 24 3 VDC.Repair: Replace the ECM. Refer to the diagnostic procedure Troubleshooting, "Replacing the ECM".STOPTest Step 9. Check the Voltage from the Ether Hold Relay.
Turn the keyswitch to the OFF position.
Connect a voltmeter between wire 984-GY(Grey) on terminal 30 of the ether hold relay and engine ground.
Turn the keyswitch to the ON position.
Activate the ether override and observe the voltmeter while ether injection is on. Disable the ether override. Do not allow the ether to be on for more than two minutes. Damage to the solenoid may occur. Expected Result:Two seconds after activation of the ether override the voltage on terminal 30 should be 24 3 VDC.Results:
OK - The ether override had been activated for two seconds. The voltage on terminal 30 is 24 3 VDC. Proceed to Test Step 10.
Not OK - The ether override had been activated for two seconds. The voltage on terminal 30 is not 24 3 VDC. Proceed to Test Step 12.Test Step 10. Check the Voltage at the Resistor and the Diode Assembly.
Turn the keyswitch to the OFF position.
Disconnect the connector for the resistor and the diode assembly.
Connect a voltmeter to pin 1 for the resistor and the diode assembly and engine ground.
Turn the keyswitch to the ON position.
Activate the ether override and observe the voltmeter while ether injection is on. Disable the ether override. This procedure must be performed on all of the resistor and diode assemblies, if more than one resistor and diode assembly is present. Do not allow the ether to be on for more than two minutes. Damage to the solenoid may occur. Expected Result:Two seconds after activation of the ether override the voltage should be 24 3 VDC.Results:
OK - The ether override had been activated for two seconds. The voltage is 24 3 VDC. Proceed to Test Step 11.
Not OK - The ether override had been activated for two seconds. The voltage is not 24 3 VDC.Repair: There is a problem in the harness between the ether hold relay and the resistor and diode assembly. Repair the connectors or wiring and/or replace the connectors or wiring.STOPTest Step 11. Check the Resistor and Diode Assembly.
Disconnect the connector at the resistor and the diode assembly.
Set the multimeter to the "Check Diode" setting.
Connect the positive lead of the multimeter to pin 1 and the negative lead to pin 2 of the resistor and the diode assembly and observe the multimeter.
Connect the positive lead of the multimeter to pin 2 and the negative lead to pin 1 of the resistor and of the diode assembly. Observe the multimeter.
Repeat the measurements for all of the resistor and the diode