Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMITSUBISHI2017MIRAGE G4 ES, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSKEYLESS OPERATION SYSTEM (KOS)
2017 Mitsubishi Mirage G4 ES, Automatic CVT Trans
Keyless Operation System (Kos)
2017 Mitsubishi Mirage G4 ES, Automatic CVT TransSECTION Keyless Operation System (Kos)
- General Information
- Special Tools
- Diagnosis
- Standard Flow Of Diagnostic Troubleshooting
- Diagnostic Function
- Troubleshooting Procedure When Vehicle Power Does Not Turn On
- Forced Power Supply Output Procedure
- Warning And Warning Indicator
- Diagnosis Trouble Code Chart
- Diagnostic Trouble Code Procedures
- DTC B1130: Ignition power supply
- DTC B1131: Starter setting circuit fail
- DTC B1132: Starter circuit fail
- DTC B1133: IG1 setting circuit fail
- DTC B1134: ECU power supply
- DTC B1135: Engine switch
- DTC B1136: Stop light switch
- DTC B1137: P range detect SW
- DTC B1138: Vehicle speed data fail
- DTC B1156: Power supply voltage low
- DTC B1157: EEPROM fail; DTC B1158: ECU internal error
- DTC B1160: Key code not programmed; DTC U1199: VIN not programmed
- DTC B1161: VIN mismatch
- DTC B1163: Coding data mismatch
- DTC B1166: Special mode
- DTC B1168: ACC system fail
- DTC B1169: IG2 system fail
- DTC B1731: PCM authentification timeout
- DTC B1A08: F.A.S.T. key1 fail; DTC B1A09: F.A.S.T. key2 fail; DTC B1A0A: F.A.S.T. key3 fail; DTC B1A0B: F.A.S.T. key4 fail
- DTC B1A10: F.A.S.T. key 1 low battery; DTC B1A11: F.A.S.T. key 2 low battery; DTC B1A12: F.A.S.T. key 3 low battery; DTC B1A13: F.A.S.T. key 4 low battery
- DTC B1A24: Transponder ID not registered
- DTC B1A25: Transponder ID unmatched
- DTC B1A28: PCM authentification error
- DTC B2352: Antenna fail
- DTC B2400: F.A.S.T. key registration fail
- DTC B2401: F.A.S.T. key ID not registered
- DTC B240A: DR side antenna (outdoor) open
- DTC B240B: PS side antenna (outdoor) open
- DTC B240C: Tail gate antenna (outdoor) open
- DTC B240D: Front antenna (indoor) open
- DTC B240E: RR antenna (indoor) open
- DTC U0100: Engine CAN timeout
- DTC U0101: T/M CAN timeout
- DTC U0141: ETACS CAN timeout
- DTC U0155: Meter CAN timeout
- DTC U0164: A/C-ECU CAN timeout
- DTC U1190: No receive fault detect signal
- DTC U1195: Coding not completed
- Data List Reference Table
- Actuator Test Table
- Special Function Table
- Trouble Symptom Chart
- Symptom Procedures
- Inspection Procedure 1: Cannot communicate with KOS & OSS-ECU using the scan tool
- Inspection Procedure 2: The keyless operation key cannot be registered using the scan tool
- Inspection Procedure 3: Abnormality in KOS & OSS-ECU power supply and ground circuits
- Inspection Procedure 4: Keyless operation warning display does not disappear
- Inspection Procedure 5: No door will be locked or unlocked by operating a lock/unlock switch on any door
- Inspection Procedure 6: Driver's door lock/unlock switch does not work
- Inspection Procedure 7: Trunk lid opener switch does not work
- Inspection Procedure 8: Keyless entry function does not work
- Inspection Procedure 9: KOS timer lock function does not work
- Inspection Procedure 10: Keyless entry hazard answer back function or the dome light answer back function does not work normally
- Inspection Procedure 11: Outer tone alarm does not sound
- Inspection Procedure 12: Power door locks with selective unlocking does not work
- Inspection Procedure 13: Vehicle power does not turn "ON". (not possible with both of power supply mode "ACC" and "ON")
- Inspection Procedure 14: Engine does not start (cranking is not performed)
- Inspection Procedure 15: Vehicle power cannot be turned "OFF" when the shift position is in "P" (Power supply mode "ON" to "ACC" is possible)
- Inspection Procedure 16: ACC power auto cut function does not work normally
- Inspection Procedure 17: Vehicle power cannot be turned OFF
- Terminal Voltage Reference Chart
- On-Vehicle Service
- Id Codes Registration Procedures
- Antenna Communication Test
- Keyless Entry Function Check
- Inspection Of Keyless Entry Timer Lock Function
- Power Supply Mode By Engine Switch Operation
- Check Of Engine Switch Indicator Function
- Check Of Engine Switch Reminder Tone Alarm
- Registration When Replacing Kos & OSS-Ecu
- Relay Inspection
- Customization Function
- Kos & OSS-Ecu
- Outside Transmission Antenna Assembly, Inside Transmission Antenna Assembly
- Keyless Operation Key
- TPMS Transmitter
- Lock/Unlock Switch
- Key Slot
- Engine Switch
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.