LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Acura >> 2009 >> RL >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Keyless Access System >> DTC Troubleshooting >> DTC B1601: Keyless Access Control Unit Internal (CPU) Error DTC B1602: Keyless Access Control Unit Internal (EEPROM) Error
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC B1601: Keyless Access Control Unit Internal (CPU) Error DTC B1602: Keyless Access Control Unit Internal (EEPROM) Error

  1. Do the battery terminal disconnection procedure (see BATTERY TERMINAL DISCONNECTION AND RECONNECTION ).
  2. Wait for at least 10 seconds to clear the DTCs.
  3. Do the battery terminal reconnection procedure (see BATTERY TERMINAL DISCONNECTION AND RECONNECTION ).
  4. Touch the door outer handle switch to lock the door.
  5. Touch the door outer handle switch to unlock the door.
  6. Connect the HDS to the data link connector.
  7. Turn the ignition switch to LOCK (0), and then back to ON (II).
  8. Check for DTCs with the HDS.

    Is DTC B1601 and/or B1602 indicated? 

    YES  -Replace the keyless access control unit.

    NO  -Intermittent failure, the system is OK at this time.

scientia non olet · About LEMON Manuals