SECURITY LIGHT: 21, DTC: B10D8:00/P1260:00 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]


id0902e5358000

DTC

Security light flashing pattern

21

Only one key or no key has been programmed

M-MDS display

Instrument cluster

B10D8:00

PCM

P1260:00

POSSIBLE CAUSE
Only one key or no key has been programmed


Diagnostic Procedure

Step

Inspection

Action

1
VERIFY NUMBER OF PROGRAMMED KEYS
•  Using the M-MDS, perform the PID/data monitor inspection and verify the programmed keys.
•  Are two or more keys programmed?
Yes
Replace the instrument cluster and program the immobilizer system-related parts.
Go to Step 3.
No
Program an additional key referring to the immobilizer system-related parts programming.
Go to the next step.
2
VERIFY DTCs
•  Using the programmed key, switch the ignition to ON.
•  Clear DTCs using the M-MDS.
•  Verify DTCs using the M-MDS.
•  Are DTCs output again?
―  Instrument cluster: B108D:00
―  PCM:P1260:00
Yes
Replace the instrument cluster and program the immobilizer system-related parts.
Go to the next step.
No
Go to Step 4.
3
VERIFY AFTER REPAIR
•  Clear DTCs using the M-MDS.
•  Verify DTCs using the M-MDS.
•  Are DTCs output again?
―  Instrument cluster: B108D:00
―  PCM:P1260:00
Yes
Inspect DTC P1260:00.
No
Go to the next step.
4
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Verify if other DTCs are displayed.
•  Are any other DTCs output?
Yes
Perform the corresponding DTC inspection.
No
DTC troubleshooting completed.