B1144

DTC B1144: Abnormal Signal from Keyless Receiver Unit

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN system diagnosis test mode A.

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF and remove the ignition key from the key cylinder.
3. Using the keyless transmitter, press the LOCK/UNLOCK, TRUNK and PANIC buttons several times.
4. Turn the ignition switch ON (II).
5. Check for DTCs with the HDS.

Is DTC B1144 indicated?

YES - Go to step 6.

NO - The system is OK at this time.

6. Do the keyless receiver unit input test.

Is the input test OK?

YES - Substitute a known-good keyless receiver unit, and recheck. If DTC is gone, the original keyless receiver unit is faulty; replace it. If the DTC B1144 is still indicated, replace the door multiplex control unit.

NO - Refer to the keyless receiver unit input test Keyless Receiver Unit Input Test and correct the cause.