CABLE AS 9D4634 - Caterpillar

System Operation Description:This procedure covers the following codes:
Table 1
Diagnostic Trouble Codes for the Ether Starting Aid Circuit
J1939 Code Description Notes
626-5 Engine Start Enable Device 1 : Current Below Normal The Electronic Control Module (ECM) detects the following conditions:
A low current condition in the output from the ECM to the solenoid for ether injection
The ECM has been powered for at least 2 seconds.
If equipped, the warning lamp will come on. The ECM will log the diagnostic code.
626-6 Engine Start Enable Device 1 : Current Above Normal The Electronic Control Module (ECM) detects the following conditions:
A high current condition in the output from the ECM to the solenoid for ether injection
The ECM has been powered for at least 2 seconds.
If equipped, the warning lamp will come on. The ECM will log the diagnostic code. When the ambient temperature is between 10 °C (50 °F) and −25 °C (−13 °F), glow plugs are used as a starting aid. When the ambient temperature is below −25 °C (−13 °F), the ether injection system is used as a starting aid. The ECM controls the ether injection system.If there is an active engine shutdown, the ether injection system is disabled .A test on the electronic service tool allows the technician to activate the ether system. The test is functional when the engine speed is zero rpm. Access the test via the "Override Parameters" screen on the electronic service tool.
Illustration 1 g02113581
Schematic of the ether injection system
Illustration 2 g01160725
Connector for the ether start valve
(1) Ether solenoid
(2) Solenoid return
Illustration 3 g01981073
Typical example of the pin locations on the P1 connector
(12) Ether injection signal
(59) Ether solenoid return
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.
Test Step 1. Inspect the Electrical Connectors and the Wiring
Remove electrical power from the ECM.
Inspect the connector for the ether injection solenoid. Refer to Troubleshooting, "Electrical Connectors - Inspect".
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the ether injection system.
Check the screw for the ECM connector for the correct torque of 6 N m (53 lb in).
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 correctly connected, 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. Proceed to Test Step 2.
Not OK - The connectors and/or the wiring are not OK.Repair: Repair the connectors and/or the wiring. Replace parts, if