DTC B1868SM2445758
DTC B1868

id080200815000

DTC B1868

Air bag warning system light malfunction
DETECTION CONDITION
Warning
• Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection with only detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the inspection procedure.
• Air bag warning system light malfunction.
POSSIBLE CAUSE
• Instrument cluster assembly incorrect
• Instrument cluster malfunction
• SAS control module malfunction

Diagnostic procedure

Step

Inspection

Action
1
VERIFY IF OTHER DTCs ARE DISPLAYED
• Clear the DTC for the SAS control module using the M-MDS. (See CLEARING DTC.)
• Perform the DTC inspection for the SAS control module using the M-MDS. (See DTC DISPLAY.)
• Is DTC U0073 or U0155 displayed?
Yes
Perform a separate inspection of the applicable DTCs.
(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L.H.D. (MZR-CD 2.2))].)
(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (R.H.D. (MZR-CD 2.2))].)
(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L.H.D. (L5))].)
(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (R.H.D. (L5))].)
(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L.H.D. (L3 Turbo))].)
(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (R.H.D. (L3 Turbo))].)
No
Go to the next step.
2
INSPECT INSTRUMENT CLUSTER
• Perform the following active command mode inspection for the instrument cluster using the M-MDS. (See ACTIVE COMMAND MODES INSPECTION [INSTRUMENT CLUSTER].)
― WL+IL (See ACTIVE COMMAND MODES TABLE [INSTRUMENT CLUSTER].)
• When activated on, does the air bag system warning light illuminate?
Yes
Go to the next step.
No
Replace the instrument cluster.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
3
PERFORM SAS CONTROL MODULE DTC INSPECTION
• Clear the DTC for the SAS control module using the M-MDS. (See CLEARING DTC.)
• Perform the DTC inspection for the SAS control module using the M-MDS. (See DTC DISPLAY.)
• Are the same DTCs present?
Yes
Replace the SAS control module.
(See SAS CONTROL MODULE REMOVAL/INSTALLATION.)
No
DTC troubleshooting completed.