Lancer L4-2.4L SOHC (2005)
STEP 21. Check rear horn relay connector A-05X and ETACS-ECU connector C-227 for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Are horn relay connector A-05X and ETACS-ECU connector C-227 in good condition?
YES: Go to Step 22.
NO: Repair or replace the damaged component(s). Refer to Harness Connector Inspection. Verify that the horn sounds normally.