HARNESS AS-CHASSIS 2710119 - Caterpillar

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Schematic of the ether injection system
Breathing ether vapors or repeated contact of ether with skin can cause personal injury. Personal injury may occur from failure to adhere to the following procedures.Use ether only in well ventilated areas.Do not smoke while changing ether cylinders.Use ether with care to avoid fires.Do not store replacement ether cylinders in living areas or in the operator's compartment.Do not store ether cylinders in direct sunlight or at temperatures above 49 °C (120 °F).Discard cylinders in a safe place. Do not puncture or burn cylinders.Keep ether cylinders out of the reach of unauthorized personnel.To avoid possible injury, be sure the brakes are applied and all controls are in Hold or Neutral when starting the engine.
Test Step 1. Inspect the Electrical Connectors and the Wiring
Turn the keyswitch to the OFF position.
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Left side engine view (typical example) (1) J1/P1 ECM connectors (2) Ether injection solenoid (3) Machine connector (20-Pin)
Thoroughly inspect connectors (1) and (3). Also, thoroughly inspect the connector for the ether solenoid (3). Refer to Troubleshooting, "Electrical Connectors - Inspect".
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P1 terminals for the ether injection system (P1-18) Solenoid return (P1-20) Ether injection solenoid
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Terminal locations at the machine connector 20-pin for the ether injection system (Terminal 2) Ether injection solenoid (Terminal 3) Solenoid return
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Terminal locations at the connector for the ether injection system (Terminal 1) Ether injection solenoid (Terminal 2) Solenoid return
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the ether injection system.
Check the torque of the allen head screws for the ECM connectors. Refer to Troubleshooting, "Electrical Connectors - Inspect" for the correct torque values.
Check the harness and the wiring for abrasion and for pinch points from the ether injection solenoid to the ECM.Expected Result:All connectors, pins, and sockets are completely coupled and/or inserted, and the harness and wiring are free of corrosion, of abrasion and of pinch points.Results:
OK - The connectors and the wiring appear to be OK.
Not OK - The connectors and/or the wiring are not OK.Repair: Repair the connectors and/or the wiring. Replace parts, if necessary. Verify that the problem is resolved.STOPTest Step 2. Check for Voltage to the Ether SolenoidNote: Remove the ether canister before you perform this procedure.
Turn the keyswitch to the OFF position.
Connect Cat ET to the service tool connector.
Disconnect the connector for the ether solenoid.
Turn the keyswitch to the ON position.
Proceed to the "Diagnostic Overrides" screen on Cat ET.
Activate the ether injection system. The system will activate for ten seconds.
Measure the voltage between terminal 1 and terminal 2 on the harness side of the connector for the ether solenoid.
Turn the keyswitch to the OFF position.Expected Result:The voltage measures approximately 0 VDC when the override for the ether system is not activated. The voltage measures approximately 24 3 VDC when the override for the ether system is activated.Results:
OK - The voltage measurements are correct.Repair: Measure the resistance of the ether solenoid. The resistance of the coil in the ether solenoid is approximately 20 Ohms. If