Keyless Access System Status Log (2013-15)

WARNING: This page is about a different car, the 2016 Acura RDX, 2015 Acura RDX, 2014 Acura RDX, and 2013 Acura RDX. However, it is still accessible from the selected car via links, so may be relevant.

If you suspect there is an immobilizer system problem, check the status log in the HDS.

Connect the HDS to the data link connector (DLC) - Refer to: How to Troubleshoot the Fuel and Emissions Systems (2013-15), or How to Troubleshoot the A/T System (2013-15) .
Press the engine start/stop button to select the ON mode.
On the HDS screen, at SYSTEM SELECTION MENU, enter ONE-PUSH START, then select SMART KEY UNIT or BACKUP CONTROL UNIT.
At SMART KEY UNIT, enter SMART INFORMATION, then select STATUS LOG.
At BACKUP CONTROL UNIT, enter SYSTEM INFORMATION, then select STATUS LOG.
Check the STATUS LOG count. Troubleshoot the status with the highest count first. If no counts are listed, the immobilizer system is OK. Continue with normal symptom troubleshooting.

Status Log (Keyless Access Control Unit)

Status Log No.	Possible cause
B-1B-2	PCM was not registered correctly Keyless Access Control Unit was registered correctly Poor connections or loose terminals between Keyless Access Control Unit and PCM Poor connections or loose terminals in the IG1 line Low Battery voltage Electrical noise
C-1C-2	Communication error between Keyless Access Control Unit and MICU Poor connections or loose terminals in the IG1 line Keyless Access Control Unit was not registered Low Battery voltage Electrical noise
D-1D-2D-3	Poor connections or loose terminals between Keyless Access Control Unit and MICU (Imoes unit) Poor connections or loose terminals between Keyless Access Control Unit and PCM Low Battery voltage Electrical noise Blown fuse

Status Log (Backup Control Unit)

Status Log No.	Possible cause
A-1A-2A-3	Keyless remote was not registered correctly Engine Start/Stop Switch failure
B-1B-2	PCM was not registered correctly Communication error between Backup Control Unit and PCM Low Battery voltage Electrical noise

Status Log No.	Possible cause
C-1C-2	Backup Control Unit was not registered correctly Communication error between Backup Control Unit and MICU Poor connections or loose terminals in the IG1 line Low Battery voltage Electrical noise
D-1D-2D-3	Poor connections or loose terminals between Backup Control Unit and MICU (Imoes unit) Poor connections or loose terminals between Backup Control Unit and PCM S-NET line short Low Battery voltage Electrical noise Blown fuse