SECURITY LIGHT 22, DTC B2141/P1260[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

id0902e3801400

SECURITY LIGHT: 22
Communication error between the keyless control module and the PCM (data transfer error)
DTC: B1241/P1260
DETECTION CONDITION
•  Communication error between the keyless control module and the PCM (data transfer error)
POSSIBLE CAUSE
•  Malfunction in the wiring harness (CAN line) between the keyless control module and the PCM
•  Keyless control module malfunction
•  PCM malfunction


Diagnostic Procedure

STEP

INSPECTION

ACTION
1
VERIFY DTC
•  Are either U1900 or U0073, or both displayed, by either the keyless control module or the PCM, or both?
Yes
Perform troubleshooting according to the corresponding DTC inspection.
(See PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION[MULTIPLEX COMMUNICATION SYSTEM].)
No
Go to the next step.
2
VERIFY DTC
•  Using the registered key, turn the ignition switch to the ON position.
•  Is the DTC displayed?
―  Security light: 22
―  M-MDS: B2141/P1260
Yes
•  Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM.
•  Go to the next step.
No
DTC troubleshooting completed.
3
EXAMINE KEYLESS CONTROL MODULE AND PCM
•  Is the DTC displayed again?
―  Security light: 22
―  M-MDS B2141/P1260
Yes
•  Replace the keyless control module and perform the resetting procedure for the immobilizer system when replacing the keyless control module.
•  Go to the next step.
No
DTC troubleshooting completed.
4
EXAMINE PCM
•  Is the DTC displayed again?
―  Security light: 22
―  M-MDS: B2141/P1260
Yes
•  Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM.
No
DTC troubleshooting completed.