DTC B112A: Driver Monitoring Communication 1

DTC detecting condition:

Driver monitoring unit internal failure

Trouble symptom:

The driver monitoring system does not operate.

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Refer to DRIVER MONITORS (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .

CHECK DTC .
1. Using the Subaru Select Monitor, perform the clear memory of [Driver Monitor]. Refer to COMMON (DIAG)>CLEAR MEMORY .
2. Turn the ignition switch to OFF.
3. Turn the ignition switch to ON.
4. Wait for 2 minutes.
5. Read the DTC of [Driver Monitor] using the Subaru Select Monitor. Refer to DRIVER MONITOR (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
Is any of DTC B112A, B112B, B112C, B112D, B112E, B1140, B1141, B118A, B118B, B118C, B118D, B118E, B118F, B11E5, B11E6, B11E7, B11E8, B11E9 or B11EA displayed? (Current malfunction)

Yes : Replace Driver Monitoring Unit. Refer to INSTRUMENTATION/DRIVER INFO>DRIVER MONITORING UNIT .

No : Even if DTC (past malfunction) is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.