INSTALLATION AR-ENG & CEM MOD 4565158 - Caterpillar

Illustration 5 g01118589
Small terminals for the typical air inlet heater relay
Disconnect the wires from the small terminals for the air inlet heater relay.
Turn the keyswitch to the ON position.
Observe the "Active Diagnostic" screen on Cat ET. Wait at least 15 seconds so that any codes may become active.
Turn the keyswitch to the OFF position.Expected Result:The short circuit diagnostic code (617-06) changed to an open circuit diagnostic code (617-05) when the wires to the relay were disconnected.Results:
OK - The short circuit diagnostic code (617-06) changed to an open circuit diagnostic code (617-05) when the wires to the relay were disconnected. The short circuit is in the relay.Repair: Replace the relay. Clear the diagnostic codes.Verify that the problem is resolved.STOP
Not OK - The short circuit diagnostic code (617-06) remained when the wires to the relay were disconnected. There is a problem in the wiring between the ECM and the relay. There may be a problem with a connector.Repair: Repair the wire and/or the connector, when possible. Replace parts, if necessary. Verify that the problem