Section 4 (Keyless Access System)
WARNING: This page is about a different car, the 2010 Acura TL and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
- Component Location Index
- System Description
- Notes
- Power Control Unit
- Touch Sensor and Lock Switches
- RF (Radio Frequency) Units
- LF (Low Frequency) Antennas
- Engine Start/Stop Switch
- Keyless Access System Mode Switch
- Remote Slot
- Remote Slot Control Unit
- Electric Steering Lock
- Fail-safe Function
- Self-diagnostic Function
- Power Mode Control Function
- Multi-information Display Indication Pattern
- Emergency Engine Stop Function
- Immobilizer Function
- Circuit Diagram
- General Troubleshooting Information
- DTC Troubleshooting
- DTC B12A1: Power Control Unit Internal (CPU) Error
- DTC B12C5: Engine Start/Stop Switch Failure
- DTC B12C6: Electric Steering Lock Switch C/D Monitor Circuit Failure
- DTC B12C7: Electric Steering Lock Motor Circuit Failure
- DTC B12D0: Power Control Unit IG1A Circuit Error; DTC B12D1: Power Control Unit IG1B Circuit Error; DTC B12D2: Power Control Unit IG2 Circuit Error; DTC B12D3: Power Control Unit IG Latch Circuit Error
- DTC B12E0: Electric Steering Lock Switch Internal Error
- DTC B12E1: Electric Steering Lock Motor Internal Error; DTC B12E2: Electric Steering Lock Low Level Failure of MTRCUT1; DTC B12E3: Electric Steering Lock High Level Failure of MTRCUT1; DTC B12E4: Electric Steering Lock High Level Failure of MTRCUT2
- DTC B12F0: Power Control Unit Lost Communication With Electric Steering Lock
- DTC B12F1: Power Control Unit Lost Communication With Remote Slot Control Unit
- DTC B12F2: Power Control Unit Lost Communication With Keyless Access Control Unit
- DTC U0155: Power Control Unit Lost Communication With Gauge Control Module
- DTC U0199: Power Control Unit Lost Communication With Door Multiplex Control Unit
- DTC B1601: Keyless Access Control Unit Internal (CPU) Error; DTC B1602: Keyless Access Control Unit Internal (EEPROM) Error
- DTC B1632: MTR CONT Signal Error; DTC B1927: MTR CONT Signal Error
- DTC B1640: RF Unit 1 Not Connected
- DTC B1641: RF Unit 2 Not Connected
- DTC B1646: Driver's Door LF Antenna Circuit Open or Short
- DTC B1648: Passenger's Door LF Antenna Circuit Open or Short
- DTC B1658: Rear Bumper LF Antenna Circuit Open or Short
- DTC B1660: Front Interior LF Antenna Circuit Open or Short
- DTC B1664: Rear Interior LF Antenna Circuit Open or Short
- DTC B1668: Rear Shelf LF Antenna Circuit Open or Short
- DTC U0155: Keyless Access Control Unit Lost Communication With Gauge Control Module
- DTC U0199: Keyless Access Control Unit Lost Communication With Door Multiplex Control Unit
- DTC U1282: Keyless Access Control Unit Lost Communication With Driver's MICU
- DTC U1283: Keyless Access Control Unit Lost Communication With Passenger's MICU
- DTC B1901: Remote Slot Control Unit Internal Error (CPU Error); DTC B1902: Remote Slot Control Unit Internal Error (EEPROM Error)
- DTC B1926: Remote Slot Antenna Open or Short
- DTC B1930: Remote Slot Control Unit LOCK/UNLOCK Error
- DTC B1931: Remote Slot Control Unit no Response
- DTC U0155: Remote Slot Control Unit Lost Communication With Gauge Control Module
- Symptom Troubleshooting Information
- Symptom Troubleshooting Index
- Symptom Troubleshooting
- Cannot select ON mode with keyless access or with the remote in the remote slot
- Cannot select ON mode with keyless access, but can select ON mode with the remote in the remote slot
- Cannot select ON mode with the remote in the remote slot, but can select ON mode with the remote removed
- The engine cranks but will not start with keyless access or with the remote in the remote slot
- The engine cranks but will not start with keyless access
- The engine cranks but will not start with the remote in the remote slot
- All the doors and the trunk will not lock and unlock
- The doors will not unlock or lock with the remote, but will unlock or lock with the door outer handles
- The doors will not unlock or lock with the door outer handle touch sensor or lock switch, but will unlock or lock with the remote
- The doors will not unlock (lock is normal) with keyless access or with the remote buttons, or the doors will not lock (unlock is normal) with keyless access or with the remote buttons
- Keyless access indicator does not go off or does not come on
- Immobilizer indicator does not go off or does not come on
- The key-in reminder does not sound
- The key-in reminder sounds when the remote is removed from the remote slot and door is open
- Remote will not go into the remote slot
- Keyless Buzzer Circuit Troubleshooting
- Touch Sensor Circuit Troubleshooting
- Door and Trunk LF Antenna Test
- Interior LF Antenna Test
- Control Unit Input Test
- RF Unit 1 Replacement
- RF Unit 2 Replacement
- Front Interior LF Antenna Replacement
- Rear Interior LF Antenna Replacement
- Rear Shelf LF Antenna Replacement
- Rear Bumper LF Antenna Replacement
- Engine Start/Stop Switch Test/Replacement
- Remote Slot Test/Replacement
- Keyless Access System Mode Switch Test/Replacement
- Remote Test
- Keyless Access System Registration