Immobilizer indicator blinks

NOTE: Before troubleshooting, check the items listed in General Check before Troubleshooting (see GENERAL CHECK BEFORE TROUBLESHOOTING ).

Turn the ignition switch to LOCK (0).
Connect the HDS, then turn the ignition switch to ON (II).
From the SYSTEM SELECTION MENU, enter IMMOBI, select IMMOBILIZER SETUP, then select SYSTEM CHECK, NUMBER OF KEYS, and STATUS LOG.
Select the SYSTEM CHECK.
Is SYSTEM CHECK indicated?

YES -Troubleshoot the immobilizer system according to the result of the SYSTEM CHECK (see SYSTEM CHECK ) and STATUS LOG (see STATUS LOG ).

NO -Go to step 5.
Turn the ignition switch to LOCK (0).
Enter the vehicle, and remove the ignition key from the ignition switch, then close all doors.
Operate the keyless transmitter LOCK and UNLOCK several times in the vehicle.
Do the door lock actuators work normally?

YES -Go to step 8.

NO -Check for a poor ground through PCM to G101 and/or an open or high resistance in the wire between immobilizer-keyless control unit 7P connector terminal No. 7 and PCM connector A (49P) terminal No. 41.
Turn the ignition switch to ON (II).
Back-probe and measure the voltage between immobilizer-keyless control unit 7P connector terminal No. 2 and body ground.

Fig 1: Measuring Voltage Between Immobilizer-Keyless Control Unit 7P Connector Terminal No. 2 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Replace the immobilizer-keyless control unit (see IMMOBILIZER-KEYLESS CONTROL UNIT REPLACEMENT ).

NO -Check for a blown No. 9 (20 A) fuse in the driver's under-dash fuse/relay box. If the fuse is OK, repair an open in the YEL wire between the driver's under-dash fuse/relay box and the immobilizer-keyless control unit.