SECURITY LIGHT: 22, DTC: B2141/P1260:00 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)]SM2445825
SECURITY LIGHT: 22, DTC: B2141/P1260:00 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)]

id09021h398600

DTC

Security light flashing pattern

22

Communication error between the keyless control module and the PCM (data transfer error)

M-MDS display

Keyless control module

B2141

PCM

P1260:00
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 U0073 or U0073:00, or both displayed, by either the keyless control module or the PCM, or both?
Yes
Perform troubleshooting according to the corresponding DTC inspection.
(See DTC U0001:88, U0073, U0073:00, U1900 [MULTIPLEX COMMUNICATION SYSTEM (L.H.D. (L3 Turbo))].)
(See DTC U0001:88, U0073, U0073:00, U1900 [MULTIPLEX COMMUNICATION SYSTEM (R.H.D. (L3 Turbo))].)
(See DTC U0001:88, U0073, U0073:00, U1900 [MULTIPLEX COMMUNICATION SYSTEM (L.H.D. (L5))].)
(See DTC U0001:88, U0073, U0073:00, U1900 [MULTIPLEX COMMUNICATION SYSTEM (R.H.D. (L5))].)
(See DTC U0001:88, U0073, U0073:00, U1900 [MULTIPLEX COMMUNICATION SYSTEM (L.H.D. (MZR-CD 2.2))].)
(See DTC U0001:88, U0073, U0073:00, U1900 [MULTIPLEX COMMUNICATION SYSTEM (R.H.D. (MZR-CD 2.2))].)
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/P1260:00
Yes
• Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
• 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/P1260:00
Yes
• Replace the keyless control module and perform the resetting procedure for the immobilizer system when replacing the keyless control module. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS ENTRY AND START SYSTEM].) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
• Go to the next step.
No
DTC troubleshooting completed.
4
EXAMINE PCM
• Is the DTC displayed again?
― Security light: 22
― M-MDS: B2141/P1260:00
Yes
• Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM. (See PCM REMOVAL/INSTALLATION [L3 Turbo].) (See PCM REMOVAL/INSTALLATION [L5].) (See PCM REMOVAL/INSTALLATION [MZR-CD 2.2].) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
No
DTC troubleshooting completed.