Section 49 (LAN Communication System (Diagnostics))
WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
- Basic Diagnostic Procedure
- Check List for Interview
- General Description
- Electrical Component Location
- Control Module I/O Signal
- Diagnostic Procedure for Subaru Select Monitor Communication
- CAN bus check
- CAN Communication Circuit Check
- Procedure
- List
- Inspection
- Check For Short To Ground (Power Unit Can)
- Check For Short To Power Supply (Power Unit Can)
- More Than 52 Ω And Less Than 62 Ω (Power Unit Can)
- 52 Ω Or Less (Power Unit Can)
- 62 Ω Or More (Power Unit Can)
- Related Lines, More Than 52 Ω And Less Than 62 Ω (Power Unit Can_TCM)
- Related Lines, More Than 52 Ω And Less Than 62 Ω (Power Unit Can_VDC)
- Related Lines, More Than 52 Ω And Less Than 62 Ω (Power Unit Can_Electric Brake Booster)
- Related Lines, More Than 52 Ω And Less Than 62 Ω (Power Unit Can_Electronically-Controlled Damper)
- Related Lines, More Than 52 Ω And Less Than 62 Ω (Power Unit Can_RAB)
- Related Lines, More Than 52 Ω And Less Than 62 Ω (Power Unit Can_Stereo Camera)
- Check For Short To Ground ((I) Power Unit 2 Can)
- Check For Short To Power Supply ((I) Power Unit 2 Can)
- More Than 52 Ω And Less Than 62 Ω ((I) Power Unit 2 Can)
- 52 Ω Or Less ((I) Power Unit 2 Can)
- 62 Ω Or More ((I) Power Unit 2 Can)
- Related Lines, More Than 52 Ω And Less Than 62 Ω ((I) Power Unit 2 Can_TCM)
- Check For Short To Ground ((G) Chassis Can)
- Check For Short To Power Supply ((G) Chassis Can)
- More Than 52 Ω And Less Than 62 Ω ((G) Chassis Can)
- 52 Ω Or Less ((G) Chassis Can)
- 62 Ω Or More ((G) Chassis Can)
- Related Lines, More Than 52 Ω And Less Than 62 Ω ((G) Chassis Can_Power Steering)
- Related Lines, More Than 52 Ω And Less Than 62 Ω ((G) Chassis Can_Electric Brake Booster)
- Related Lines, More Than 52 Ω And Less Than 62 Ω ((G) Chassis Can_Airbag)
- Related Lines, More Than 52 Ω And Less Than 62 Ω ((G) Chassis Can_Steering Angle Sensor)
- Related Lines, More Than 52 Ω And Less Than 62 Ω ((G) Chassis Can_TPMS & Keyless Entry, TPMS Or Keyless Entry)
- Check For Short To Ground (Body Can)
- Check For Short To Power Supply (Body Can)
- More Than 52 Ω And Less Than 62 Ω (Body Can)
- 52 Ω Or Less (Body Can)
- 62 Ω Or More (Body Can)
- Related Lines, More Than 52 Ω And Less Than 62 Ω (Body Can_Body Integrated Unit)
- Related Lines, More Than 52 Ω And Less Than 62 Ω (Body Can_Headlight Beam Leveler)
- Related Lines, More Than 52 Ω And Less Than 62 Ω (Body Can_Combination Meter)
- Related Lines, More Than 52 Ω And Less Than 62 Ω (Body Can_Keyless Access)
- Related Lines, More Than 52 Ω And Less Than 62 Ω (Body Can_Rear View Mirror)
- Related Lines, More Than 52 Ω And Less Than 62 Ω (Body Can_Immobilizer)
- Related Lines, More Than 52 Ω And Less Than 62 Ω (Body Can_A/C)
- Check For Short To Ground ((H) Advanced Safety Can)
- Check For Short To Power Supply ((H) Advanced Safety Can)
- More Than 52 Ω And Less Than 62 Ω ((H) Advanced Safety Can)
- 52 Ω Or Less ((H) Advanced Safety Can)
- 62 Ω Or More ((H) Advanced Safety Can)
- Related Lines, More Than 52 Ω And Less Than 62 Ω ((H) Advanced Safety Can_Radar Sensor LH)
- Related Lines, More Than 52 Ω And Less Than 62 Ω ((H) Advanced Safety Can_RAB)
- Related Lines, More Than 52 Ω And Less Than 62 Ω ((H) Advanced Safety Can_Stereo Camera)
- RELATED LINES, MORE THAN 52 Ω AND LESS THAN 62 Ω ((H) ADVANCED SAFETY CAN_EyeSight ASSIST MONITOR)
- Check For Short To Ground ((J) Vehicle External Connection Can)
- Check For Short To Power Supply ((J) Vehicle External Connection Can)
- More Than 52 Ω And Less Than 62 Ω ((J) Vehicle External Connection Can)
- 52 Ω Or Less ((J) Vehicle External Connection Can)
- 62 Ω Or More ((J) Vehicle External Connection Can)
- Related Lines, More Than 52 Ω And Less Than 62 Ω ((J) Vehicle External Connection Can_Cockpit Control)
- Related Lines, More Than 52 Ω And Less Than 62 Ω ((J) Vehicle External Connection Can_Telematics)
- Related Lines, More Than 52 Ω And Less Than 62 Ω ((J) Vehicle External Connection Can_Op Connector (Remote Engine Start))
- Diagnostic Trouble Code (DTC)
- Diagnostic Procedure with Diagnostic Trouble Code (DTC)
- DTC U0073: Control Module Communication Bus Off
- DTC U0074: Control Module Communication Bus "Body-Can" Off
- DTC U0079: Control Module Communication Bus "G" Off
- DTC U007A: Control Module Communication Bus "H" Off
- DTC U007B: Control Module Communication Bus "I" Off
- DTC U007C: Control Module Communication Bus "J" Off
- DTC U0100: Lost Communication With ECM/Pcm "A"
- DTC U0101: Lost Communication With TCM
- DTC U0122: Lost Communication With Vehicle Dynamics Control Module
- DTC U0126: Lost Communication With Steering Angle Sensor Module
- DTC U0127: Lost Communication With Tire Pressure Monitor Control Module And/Or Keyless Entry Control Module
- DTC U0128: Lost Communication With Park Brake Control Module
- DTC U0129: Lost Communication With Brake System Control Module
- DTC U0131: Lost Communication With Power Steering Control Module
- DTC U0132: Lost Communication With Suspension Control Module "A"
- DTC U0140: Lost Communication With Body Control Module
- DTC U0141: Lost Communication With Body Control Module "A"
- DTC U0146: Lost Communication With Serial Data Gateway Module "A"
- DTC U0151: Lost Communication With Restraints Control Module
- DTC U0155: Lost Communication With Instrument Panel Cluster (IPC) Control Module
- DTC U0162: Lost Communication With Audio Visual Navigation Display Module
- DTC U0164: Lost Communication With HVAC Control Module
- DTC U0167: Lost Communication With Immobilizer Control Module
- DTC U0181: Lost Communication With Headlamp Leveling Control Module
- DTC U0254: Lost Communication With Remote Start Module
- DTC U0327: Software Incompatibility With Vehicle Security Control Module
- DTC U0401: Invalid Data Received From ECM/Pcm "A"
- DTC U0402: Invalid Data Received From TCM
- DTC U0416: Invalid Data Received From Vehicle Dynamics Control Module
- DTC U0417: Invalid Data Received From Park Brake Control Module
- DTC U0418: Invalid Data Received From Brake System Control Module
- DTC U0420: Invalid Data Received From Power Steering Control Module
- DTC U0421: Invalid Data Received From Suspension Control Module "A"
- DTC U0422: Invalid Data Received From Body Control Module
- DTC U0423: Invalid Data Received From Instrument Panel Cluster Control Module
- DTC U0424: Invalid Data Received From HVAC Control Module
- DTC U0426: Invalid Data Received From Immobilizer Control Module
- DTC U0427: Invalid Data Received From Vehicle Security Control Module
- DTC U0428: Invalid Data Received From Steering Angle Sensor Module
- DTC U0430: Invalid Data Received From Tire Pressure Monitor Control Module And/Or Keyless Entry Control Module
- DTC U0431: Invalid Data Received From Body Control Module "A"
- DTC U0452: Invalid Data Received From Restraints Control Module
- DTC U0463: Invalid Data Received From Navigation Display Module
- DTC U0482: Invalid Data Received From Headlamp Leveling Control Module
- DTC U1075: Control Module Communication Bus "Eyesight Local - Bus1" Off
- DTC U111F: <HBA>Lost Communication With Vehicle Dynamics Control Module
- DTC U1122: Lost Communication With Vehicle Dynamics Control Module C-Can
- DTC U1129: Lost Communication With Brake System Control Module PU-Can
- DTC U1131: Lost Communication With Power Steering Control Module Ch-Bus
- DTC U1140: Lost Communication With Body Control Module Body-Can
- DTC U1145: <HBA>Lost Communication With Body Control Module
- DTC U1146: Lost Communication With Gateway "A" Body-Can
- DTC U114B: Lost Communication With Gateway "A" Ch-Bus
- DTC U114C: Lost Communication With Gateway "A" SA-Bus
- DTC U114E: Lost Communication With Gateway "A" SS-Bus
- DTC U1158: Lost Communication With Eyesight Assist Monitor
- DTC U115A: <HBA>Lost Communication With Instrument Panel Cluster (IPC) Control Module
- DTC U1198: Lost Communication With Telematics System
- DTC U1232: Lost Communication With Rear/Side Radar Control Module
- DTC U1233: Lost Communication With RAB Control Module
- DTC U1235: LOST COMMUNICATION WITH EyeSight
- DTC U123C: Lost Communication With High Beam Assist Control Module
- DTC U1283: Lost Communication With Eyesight SA-Bus
- DTC U128D: Lost Communication With Sonar Ecu Main-Can
- DTC U1416: Invalid Data Received From Vehicle Dynamics Control Module C-Can
- DTC U1418: Invalid Data Received From Brake System Control Module PU-Can
- DTC U141A: <HBA>Invalid Data Received From Vehicle Dynamics Control Module
- DTC U1422: Invalid Data Received From Body Control Module Body-Can
- DTC U142A: <HBA>Invalid Data Received From Instrument Panel Cluster (IPC) Control Module
- DTC U1433: INVALID DATA RECEIVED FROM EyeSight
- DTC U1446: <HBA>Invalid Data Received From Body Control Module
- DTC U1533: Invalid Data Received From Rear/Side Radar Control Module
- DTC U1534: Invalid Data Received From Sonar Ecu
- DTC U153D: Invalid Data Received From High Beam Assist Control Module
- DTC U1584: Invalid Data Received From Eyesight SA-Bus
- DTC U1C00: Invalid Authentication Data Received From Gateway
- DTC U1C07: Invalid Authentication Data Received From ECM/Pcm PU-Bus
- DTC U1C08: Invalid Authentication Data Received From VDC PU-Bus
- DTC U1C09: Invalid Authentication Data Received From VDC Ch-Bus
- DTC U1C0A: Invalid Authentication Data Received From Brake System Control Module PU-Bus
- DTC U1C0B: Invalid Authentication Data Received From Brake System Control Module Ch-Bus
- DTC U1C0C: Invalid Authentication Data Received From Eyesight PU-Bus
- DTC U1C0D: Invalid Authentication Data Received From Eyesight SA-Bus
- DTC U1C0F: Invalid Authentication Data Received From Steering Angle Sensor Module Ch-Bus
- DTC U1D00: CONTINUINGLY Invalid Authentication Data Received From Gateway
- DTC U1D07: CONTINUINGLY Invalid Authentication Data Received From ECM/Pcm PU-Bus
- DTC U1D08: Invalid Authentication Data Received From VDC PU-Bus
- DTC U1D0C: CONTINUINGLY Invalid Authentication Data Received From Eyesight PU-Bus
- DTC U1E00: Lost Communication Of Authentication Data With Gateway "A" PU-Bus
- DTC U1E07: Lost Communication Of Authentication Data With ECM/Pcm PU-Bus
- DTC U1E08: Lost Communication Of Authentication Data With VDC PU-Bus
- DTC U1E0C: Lost Communication Of Authentication Data With Eyesight PU-Bus
- Diagnostics with Phenomenon