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HOMESERVICE MANUALSACURA2015TLX BASE, 2.4L ENGREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEDOOR LOCKSSECURITY SYSTEM KEYLESS ENTRY SYSTEM - TESTING & TROUBLESHOOTINGTESTINGKEYLESS ACCESS SYSTEM STATUS LOG
2015 Acura TLX Base, 2.4L Eng

Keyless Access System Status Log

2015 Acura TLX Base, 2.4L EngSECTION Keyless Access System Status Log

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

1. Connect the HDS to the data link connector (DLC) - Refer to: How to Troubleshoot the Fuel and Emissions Systems (L4), or How to Troubleshoot the Dual Clutch Transmission (DCT), or How to Troubleshoot the Brake Booster Pressure Monitoring System (With Auto Idle Stop System), or How to Troubleshoot the Fuel and Emissions Systems (V6, Without Auto Idle Stop System), or How to Troubleshoot the Fuel and Emissions Systems (V6, With Auto Idle Stop System) .

2. Turn the vehicle to the ON mode.

3. On the HDS screen, at SYSTEM SELECTION MENU, enter ONE-PUSH START, then select KEYLESS ACCESS CONTROL UNIT or BACKUP CONTROL UNIT.

NOTE:  If the HDS does not communicate, check the keyless access/TPMS control unit power, ground, K-line, and L-line connectors.

4. At KEYLESS ACCESS CONTROL UNIT, enter KEYLESS ACCESS SYSTEM INFORMATION, then select KEYLESS ACCESS STATUS LOG.

5. At BACKUP CONTROL UNIT, enter SYSTEM INFORMATION, then select STATUS LOG.

6. 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/TPMS Control Unit) 

Status Log No. Possible cause
B-1

B-2
  • PCM was not registered correctly
  • Keyless Access/TPMS Control Unit was registered correctly
  • Poor connections or loose terminals between Keyless Access/TPMS Control Unit and PCM
  • Poor connections or loose terminals in the IG1 line
  • Low battery voltage
  • Electrical noise
C-1

C-2
  • Communication error between Keyless Access/TPMS Control Unit and MICU (Imoes unit)
  • Poor connections or loose terminals in the IG1 line
  • Keyless Access/TPMS Control Unit was not registered
  • Low battery voltage
  • Electrical noise
D-1

D-2

D-3
  • Poor connections or loose terminals between Keyless Access/TPMS Control Unit and MICU (Imoes unit)
  • Poor connections or loose terminals between Keyless Access/TPMS Control Unit and PCM
  • Low battery voltage
  • Electrical noise
  • Blown fuse

Status Log (Backup Control Unit) 

Status Log No. Possible cause
A-1

A-2

A-3
  • Keyless remote was not registered correctly
  • Engine Start/Stop Switch failure
B-1

B-2
  • PCM was not registered correctly
  • Communication error between Keyless Access/TPMS Control Unit and PCM
  • Low battery voltage
  • Electrical noise
C-1

C-2
  • Keyless Access/TPMS Control Unit was not registered correctly
  • Communication error between Keyless Access/TPMS Control Unit and MICU (Imoes unit)
  • Poor connections or loose terminals in the IG1 SAFETY line
  • Low battery voltage
  • Electrical noise
D-1

D-2

D-3
  • Poor connections or loose terminals between Keyless Access/TPMS Control Unit and MICU (Imoes unit)
  • Poor connections or loose terminals between Keyless Access/TPMS Control Unit and PCM
  • S-NET line short
  • Low battery voltage
  • Electrical noise
  • Blown fuse
RENDER: 1.0x

NO RELATED

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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.