SECURITY LIGHT: 22, DTC B2141/P1260

id0902e4903900

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


Diagnostic Procedure

STEP

INSPECTION

ACTION
1
VERIFY DTC USING WDS OR EQUIVALENT
•  Are either U1900 or U0073, or both displayed, by either the keyless unit or the PCM, or both?
Yes
Perform troubleshooting according to the corresponding DTC inspection.
(See DTC U0073, U1900, U2516.)
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
―  WDS or equivalent: B2141/P1260
Yes
•  Perform procedures for when replacing the PCM only.
•  Go to the next step.
No
DTC troubleshooting completed.
3
EXAMINE KEYLESS UNIT AND PCM
•  Is the DTC displayed again?
―  SECURITY LIGHT: 22
―  WDS or equivalent: B2141/P1260
Yes
•  Replace the keyless unit and perform procedures for when replacing the keyless unit only.
•  Go to the next step.
No
DTC troubleshooting completed.
4
EXAMINE PCM
•  Is the DTC displayed again?
―  SECURITY LIGHT: 22
―  WDS or equivalent: B2141/P1260
Yes
•  Replace the PCM and perform procedures for when replacing the PCM only.
No
DTC troubleshooting completed.