[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
42 -BODY > 42A-BODY > KEYLESS ENTRY SYSTEM<VEHICLES WITHOUT KEYLESS OPERATION SYSTEM><VEHICLES WITHOUT KEYLESS OPERATION SYSTEM> > DIAGNOSIS CODE PROCEDURES > B1A08 Keyless/KOS key1 performance
Code No.B1A08 Keyless/KOS key1 performance
Code No.B1A09 Keyless/KOS key2 performance
Code No.B1A0A Keyless/KOS key3 performance
Code No.B1A0B Keyless/KOS key4 performance
Code No.B1A0C Keyless key 5 performance
Code No.B1A0D Keyless key 6 performance
Code No.B1A0E Keyless key 7 performance
Code No.B1A0F Keyless key 8 performance
 
 
caution
  • When replacing the ECU, always check that the communication circuit is normal.
  • When this diagnosis code is set as "historic fault", clear it. Then, when the diagnosis code is not set as "current fault" by operating the keyless entry system again, no action must be taken.
 
 
DIAGNOSTIC FUNCTION
The door locking/unlocking code is automatically updated every time the doors are locked (rolling code). ETACS-ECU sets diagnosis code No. B1A08, B1A09, B1A0A, B1A0B, B1A0C, B1A0D, B1A0E, or B1A0F when it receives wrong signal (rolling code out of synchronisation) from the transmitter.
noteWhen the system is corrected by the keyless entry operation, the diagnosis code will be set as "historic fault."
 
 
JUDGEMENT CRITERIA
  • B1A08: ETACS-ECU determines that the abnormality is present when the rolling code received from the transmitter 1 (the first transmitter registered in ETACS-ECU) greatly differs from the rolling code stored in ETACS-ECU.
  • B1A09: ETACS-ECU determines that the abnormality is present when the rolling code received from the transmitter 2 (the second transmitter registered in ETACS-ECU) greatly differs from the rolling code stored in ETACS-ECU.
  • B1A0A: ETACS-ECU determines that the abnormality is present when the rolling code received from the transmitter 3 (the third transmitter registered in ETACS-ECU) greatly differs from the rolling code stored in ETACS-ECU.
  • B1A0B: ETACS-ECU determines that the abnormality is present when the rolling code received from the transmitter 4 (the fourth transmitter registered in ETACS-ECU) greatly differs from the rolling code stored in ETACS-ECU.
  • B1A0C: ETACS-ECU determines that the abnormality is present when the rolling code received from the transmitter 5 (the fifth transmitter registered in ETACS-ECU) greatly differs from the rolling code stored in ETACS-ECU.
  • B1A0D: ETACS-ECU determines that the abnormality is present when the rolling code received from the transmitter 6 (the sixth transmitter registered in ETACS-ECU) greatly differs from the rolling code stored in ETACS-ECU.
  • B1A0E: ETACS-ECU determines that the abnormality is present when the rolling code received from the transmitter 7 (the seventh transmitter registered in ETACS-ECU) greatly differs from the rolling code stored in ETACS-ECU.
  • B1A0F: ETACS-ECU determines that the abnormality is present when the rolling code received from the transmitter 8 (the eighth transmitter registered in ETACS-ECU) greatly differs from the rolling code stored in ETACS-ECU.
note
  • When you press the unlock switch after you press the lock/unlock switches on the transmitter 100 times or more at the place where an authorised vehicle is not within a radio wave range, the system will not be unlocked only once. Then the diagnosis code is set as "current fault." When you press the unlock switch again, the system will be unlocked. Then the "current fault" is switched to "historic fault." When you press the lock switch after you press the lock/unlock switches 100 times or more, the system will be locked. Then the diagnosis code is set as "current fault." When you press the lock switch again, the system will be locked. Then the "current fault" is switched to "historic fault."
  • When you press the unlock or lock switch after you press the lock/unlock switches on the transmitter 3000 times or more at the place where an authorised vehicle is not within a radio wave range, the system will not be blocked. Then the diagnosis code is set as "current fault." Then, when the keyless ID is registered again, the diagnosis code is set as "historic fault" instead of "current fault".
 
 
PROBABLE CAUSES
  • Rolling code out of synchronisation
  • Malfunction of the transmitter
  • The lock or unlock switch on the transmitter is pressed too many times at the place where an authorised vehicle is not within a radio wave range
  • Malfunction of the ETACS-ECU
 
 
DIAGNOSIS PROCEDURE
STEP 1. Synchronise the rolling code and recheck the diagnosis code.
(1) Synchronise the rolling code.
  • Push the lock switch or unlock switch of transmitter twice or more.
  • If the keyless entry system does not resume by the procedure above, register the key again (Refer to ).
(2) Erase the diagnosis code.
(3) Recheck if the diagnosis code is set.
(1) Push the lock switch or unlock switch of transmitter.
(2) Check if the diagnosis code is set.
Is the diagnosis code set?
Go to Step 2.
The diagnosis is complete.
 
STEP 2. Check whether the diagnosis code is set again.
Replace the transmitter in which the diagnosis code is set with a new one, register the key (Refer to .), and recheck if the diagnosis code is set.
(1) Push the lock switch or unlock switch of transmitter.
(2) Erase the diagnosis code.
(3) Check if the diagnosis code is set.
Is the diagnosis code set?
Replace ETACS-ECU and register the ID codes (Refer to ).
The diagnosis is complete.