Honda Accord: Immobilizer-Keyless Control Unit Input
Test
NOTE: Before testing, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A (see page 22-134).
1. Remove the driver's dashboard lower cover (see page 20-166).
2. Remove the steering column covers (see page 20-181).
3. Disconnect the 7P connector (A) from the immobilizer-keyless control unit (B).

4. Inspect the connector and socket terminals to be sure they are all making good contact.
• If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
• If the terminals look OK, go to step 5.
5. With the connector still disconnected, do these Input tests at the following connector.
• If any test indicates a problem, find and correct the cause, then recheck the system.
• If all the input tests prove OK, go to step 6.

6. Reconnect the connector to the immobilizer-keyless control unit, and do these input tests at the following connector.
• If any test indicates a problem, find and correct the cause, then recheck the system.
• If all the input tests prove OK, replace the immobilizer-keyless control unit (see page 22-440).
NOTE: If you replace the immobilizer-keyless control unit, do the immobilizer registration (see page 22-439).

Status Log
If you suspect there is a immobilizer system problem, check the status log.
1. Connect the HDS to the data link connector.
2. Turn the ignition switch to ON (II).
3. On the HDS screen, at MAI ...
Immobilizer Key Registration
NOTE:
• The HDS is required for registration of the immobilizer
keys.
• Programming the immobilizer also programs the
keyless transmitter.
• Check for aftermarket electrical eq ...
See also:
Symptom Troubleshooting
The HFL digits do not go away from the
audio-HVAC subdisplay or the audio HVAC
display after pressing the HFL BACK button
1. Connect the HDS to the DLC (see page 23-252).
2. Clear the DTCs with ...
Shift Solenoid Valve Removal and
Installation
NOTE:
-Do not hold the shift solenoid valve connector to
remove and to install the shift solenoid valves. Hold
the shift solenoid valve b o d y .
-Do not install the shift solenoid valve A before ...
Troubleshooting
B-CAN System Diagnosis Test Mode
A
Check the ECM/PCM for DTCs and troubleshoot .
ECM/PCM (see page 11-3) or F-CAN loss of
communication errors first, then do this diagnosis if the
symptom is related to the B-CAN system.
1. Comp ...