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Home >> Subaru >> 2023 >> WRX Base, Standard Trans >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Reverse Automatic Braking System (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC B2C02: RRC Sonar Control Module Circuit
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DTC B2C02: RRC Sonar Control Module Circuit

Outline of diagnosis  :

Detect the malfunction of the RAB control module.

Time needed for diagnosis  :

1200 ms

Recovery conditions  :

Ignition switch OFF → ON

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description"  . Ref. to REVERSE AUTOMATIC BRAKING (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .
  1. CHECK DTC  .
    1. Turn the ignition switch to ON.
    2. Read the DTC of [Reverse Automatic Braking] using the Subaru Select Monitor. Ref. to REVERSE AUTOMATIC BRAKING (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

    Is any DTC other than DTC B2C02 displayed? (Current code)

    Yes:  Perform the diagnosis of DTCs other than B2C02. Ref. to REVERSE AUTOMATIC BRAKING (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST .

    No:  Replace the RAB control module. Ref. to REVERSE AUTOMATIC BRAKING>REVERSE AUTOMATIC BRAKING CM .