RENR5042-02 149 Troubleshooting Section Not OK The connectors and/or wiring are not OK. Repair: Replace the empty ether canister with a full ether canister. Verify that the original problem is resolved. Repair: Repair the wiring and/or the connectors. Replace parts, if necessary. STOP. Verify that the original problem is resolved. Test Step 4. Check the Voltage at the Ether Start Relay STOP. Test Step 2. Check for Active Diagnostic Codes A. Turn the keyswitch to the OFF position. B. Connect Cat ET to the service tool connector. A. Connect the Caterpillar Electronic Technician (ET) to the service tool connector. Refer to Troubleshooting, “Electronic Service Tools”. C.
Remove the ether canister from the ether valve. D. Remove the wire from terminal 87 of the normally open contacts of the ether relay that goes to the ether injection solenoid. B. Turn the keyswitch to the ON position. C. Monitor the active diagnostic code screen on Cat ET. Check and record any active diagnostic codes. E. Connect a voltmeter between terminal 87 of the ether relay and ground. Note: Wait at least 15 seconds in order for the diagnostic codes to become active. F. Turn the keyswitch to the ON position. G. Select the “Diagnostic Tests” on Cat ET. D. Determine if the problem is related to an open circuit diagnostic code 05 or to a short circuit diagnostic code 06. H.
Select the “Override Parameters” screen on Cat ET. Expected Result: I. Activate the ether override. The ECM will activate the ether injection system for ten seconds. No active codes are present. Results: J. Measure the voltage at the ether relay while the ether injection system is activated. OK No active codes are present. However, the ether injection system does not inject ether. Proceed to Test Step 3. K. Deactivate the ether override. L. Turn the keyswitch to the OFF position. Not OK There is an active diagnostic code for the ether injection system. Proceed to Test Step 4. M. Reconnect the wire to terminal 87 of the ether relay. Test Step 3. Check the Ether Canister Expected Result: A.
Turn the keyswitch to the OFF position. The voltage at the ether relay is 24 ± 3 VDC. B. Remove the ether canister from the ether valve. Determine if the canister is empty. Results: OK – The voltage at the ether relay is 24 ± 3 VDC. Proceed to Test Step 5. Expected Result: The ether canister is not empty. Not OK - 24 VDC – The voltage at the ether relay is not 24 ± 3 VDC. Proceed to Test Step 6. Results: OK – The ether canister is not empty. Do not install the ether canister. Proceed to Test Step 4. Test Step 5. Check the Voltage at the Ether Injection Solenoid A. Turn the keyswitch to the OFF position. Not OK – The ether canister is empty. B.
Disconnect the electrical connector for the ether injection solenoid.