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Home >> Subaru >> 2020 >> Outback Base >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Central Gateway System (Diagnostics) >> Inspection Mode >> Procedure >> Inspection Mode 1
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Inspection Mode 1

DTC Description & trouble part Note
B1731 CENTRAL GATEWAY CONTROL MODULE CAN REGISTER STUCK -
B1732 CENTRAL GATEWAY CONTROL MODULE NON-VOLATILE MEMORY -
U0100 LOST COMMUNICATION WITH ECM/PCM "A" -
U0101 LOST COMMUNICATION WITH TCM -
U0126 LOST COMMUNICATION WITH STEERING ANGLE SENSOR MODULE -
U0127 LOST COMMUNICATION WITH TIRE PRESSURE MONITOR CONTROL MODULE AND/OR KEYLESS ENTRY CONTROL MODULE -
U0128 LOST COMMUNICATION WITH PARK BRAKE CONTROL MODULE -
U0129 LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE -
U0131 LOST COMMUNICATION WITH POWER STEERING CONTROL MODULE -
U0140 LOST COMMUNICATION WITH BODY CONTROL MODULE -
U0141 LOST COMMUNICATION WITH BODY CONTROL MODULE "A" -
U0151 LOST COMMUNICATION WITH RESTRAINTS CONTROL MODULE -
U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE -
U0162 LOST COMMUNICATION WITH AUDIO VISUAL NAVIGATION DISPLAY MODULE -
U0164 LOST COMMUNICATION WITH HVAC CONTROL MODULE -
U0167 LOST COMMUNICATION WITH IMMOBILIZER CONTROL MODULE -
U0181 LOST COMMUNICATION WITH HEADLAMP LEVELING CONTROL MODULE -
U0208 LOST COMMUNICATION WITH "SEAT CONTROL MODULE A" -
U0209 LOST COMMUNICATION WITH "SEAT CONTROL MODULE B" -
U0230 LOST COMMUNICATION WITH REAR GATE MODULE -
U0254 LOST COMMUNICATION WITH REMOTE START MODULE -
U0327 SOFTWARE INCOMPATIBILITY WITH VEHICLE SECURITY CONTROL MODULE -
U1128 LOST COMMUNICATION WITH PARK BRAKE CONTROL MODULE CH-BUS -
U1129 LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE PU-CAN -
U1131 LOST COMMUNICATION WITH POWER STEERING CONTROL MODULE CH-BUS -
U1158 LOST COMMUNICATION WITH EYESIGHT ASSIST MONITOR -
U1198 LOST COMMUNICATION WITH TELEMATICS SYSTEM -
U122E LOST COMMUNICATION WITH DRIVER SIDE MIRROR MODULE -
U122F LOST COMMUNICATION WITH PASSENGER SIDE MIRROR MODULE -
U1232 LOST COMMUNICATION WITH REAR/SIDE RADAR CONTROL MODULE -
U1233 LOST COMMUNICATION WITH RAB CONTROL MODULE -
U1235 LOST COMMUNICATION WITH EyeSight -
U123A LOST COMMUNICATION WITH DRIVER MONITORING SYSTEM -
U1253 LOST COMMUNICATION WITH ACCESSORY INTERFACE MODULE -
U1265 LOST COMMUNICATION WITH MULTI VIEW SYSTEM -
U1283 LOST COMMUNICATION WITH EYESIGHT SA-BUS -
U128D LOST COMMUNICATION WITH SONAR ECU MAIN-CAN -

Diagnostic procedure:

  1. Using the Subaru Select Monitor, perform the clear memory of [Central Gateway]. Refer to COMMON (DIAG)>CLEAR MEMORY .
  2. Using the Subaru Select Monitor, read the DTC of [Central Gateway] to check that there is no DTC displayed. Refer to CENTRAL GATEWAY (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
    NOTE: If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs. After solving the DTC, repeat from step 1).
  3. After the ignition switch is turned ON, wait for 6 seconds or more.
  4. Using the Subaru Select Monitor, read the DTC of [Central Gateway] to check that there is no DTC displayed. Refer to CENTRAL GATEWAY (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
    NOTE: If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs.