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Home >> Mitsubishi >> 2010 >> Lancer ES, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Keyless Operation System (Kos) - Lancer Evolution) >> Diagnosis >> Trouble Symptom Chart

Trouble Symptom Chart

WARNING: This page is about a different car, the 2012 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
TROUBLE SYMPTOM CHART

Trouble symptom Inspection procedure
Scan tool cannot communicate with KOS-ECU. Refer to INSPECTION PROCEDURE 1: SCAN TOOL CANNOT COMMUNICATE WITH KOS-ECU. 
The keyless operation key cannot be registered using scan tool. Refer to INSPECTION PROCEDURE 2: THE KEYLESS OPERATION KEY CANNOT BE REGISTERED USING SCAN TOOL. 
Abnormality in KOS-ECU power supply and ground circuits. Refer to INSPECTION PROCEDURE 3: ABNORMALITY IN KOS-ECU POWER SUPPLY AND GROUND CIRCUITS 
Keyless operation warning display does not disappear. Refer to INSPECTION PROCEDURE 4: KEYLESS OPERATION WARNING DISPLAY DOES NOT DISAPPEAR. 
IG knob will not turn (keyless operation is not recognized). Refer to INSPECTION PROCEDURE 5: IG KNOB WILL NOT TURN (KEYLESS OPERATION IS NOT RECOGNIZED). 
The engine will not start with KOS (IG knob operates normally). Refer to INSPECTION PROCEDURE 6: THE ENGINE WILL NOT START WITH KOS (IG KNOB OPERATES NORMALLY). 
Engine does not start with emergency key (cranking but no initial combustion). Refer to INSPECTION PROCEDURE 7: ENGINE DOES NOT START WITH EMERGENCY KEY (CRANKING BUT NO INITIAL COMBUSTION). 
No door will be locked or unlocked by operating a lock switch on any door, or by touching the unlock sensor. Refer to INSPECTION PROCEDURE 8: NO DOOR WILL BE LOCKED OR UNLOCKED BY OPERATING A LOCK SWITCH ON ANY DOOR, OR BY TOUCHING THE UNLOCK SENSOR. 
Driver's door lock/unlock switch does not work. Refer to INSPECTION PROCEDURE 9: DRIVER'S DOOR LOCK SWITCH DOES NOT WORK. 
Front passenger's door lock/unlock switch does not work. Refer to INSPECTION PROCEDURE 10: FRONT PASSENGER'S DOOR LOCK SWITCH DOES NOT WORK. 
Trunk lid opener switch does not work. Refer to INSPECTION PROCEDURE 11: TRUNK LID OPENER SWITCH DOES NOT WORK. 
Keyless entry system does not work. Refer to INSPECTION PROCEDURE 12: KEYLESS ENTRY SYSTEM DOES NOT WORK. 
KOS timer lock function does not work. Refer to INSPECTION PROCEDURE 13: KOS TIMER LOCK FUNCTION DOES NOT WORK. 
Keyless entry hazard light answerback function, the dome light answerback function or the horn answerback function does not work normally. Refer to INSPECTION PROCEDURE 14: KEYLESS ENTRY HAZARD LIGHT ANSWERBACK FUNCTION, THE DOME LIGHT ANSWERBACK FUNCTION OR THE HORN ANSWERBACK FUNCTION DOES NOT WORK NORMALLY. 
The trunk is not opened when the keyless operation key "TRUNK" button is operated. Refer to INSPECTION PROCEDURE 15: THE TRUNK IS NOT OPENED WHEN THE KEYLESS OPERATION KEY "TRUNK" BUTTON IS OPERATED. 
Outer tone alarm does not sound. Refer to INSPECTION PROCEDURE 16: OUTER TONE ALARM DOES NOT SOUND. 
Power door locks with selective unlocking does not work. Refer to INSPECTION PROCEDURE 17: POWER DOOR LOCKS WITH SELECTIVE UNLOCKING DOES NOT WORK.