DTC CHART DTC U0073 PCM TCM EHPAS control module TPMS control module Instrument cluster CAN system communication error U2012 DSC HU/CM ABS HU/CM DETECTION CONDITION WARNING: Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection according to only detection conditions may cause injury due to operating error, or damage the system. When performing an inspection, always follow the inspection procedure. CAN system related harness malfunction Related module communication error POSSIBLE CAUSE Malfunction of connectors between PCM, TCM, EHPAS control module, DSC HU/CM, ABS HU/CM TPMS control module, and instrument cluster Open or short circuit in wiring harness PCM malfunction TCM malfunction EHPAS control module malfunction TPMS control module malfunction DSC HU/CM malfunction ABS HU/CM malfunction Instrument cluster malfunction
Home/Mazda/3/Mazda 3 BL (2008-2011)/Repair manual/Communication Devices/DTC U0073, U2012 [MULTIPLEX COMMUNICATION SYSTEM]
Contents
Wiring diagrams Section: Communication Devices- On-Board Diagnostic - Body Control System: Overview
- On-Board Diagnostic - Body Control System: Diagnosis
- DTC B1342 [CONTROL SYSTEM]
- DTC B2477 [CONTROL SYSTEM]
- DTC B1014 [CONTROL SYSTEM]
- DTC B1311 [CONTROL SYSTEM]
- DTC B1317 [CONTROL SYSTEM]
- DTC B1318 [CONTROL SYSTEM]
- DTC B1320 [CONTROL SYSTEM]
- DTC B1328 [CONTROL SYSTEM]
- DTC B1336 [CONTROL SYSTEM]
- DTC B1345 [CONTROL SYSTEM]
- DTC B1350 [CONTROL SYSTEM]
- DTC B1447 [CONTROL SYSTEM]
- DTC B1472 [CONTROL SYSTEM]
- DTC B1502 [CONTROL SYSTEM]
- DTC B1506 [CONTROL SYSTEM]
- DTC B1520 [CONTROL SYSTEM]
- DTC B1570 [CONTROL SYSTEM]
- DTC B1572 [CONTROL SYSTEM]
- DTC B1607 [CONTROL SYSTEM]
- DTC B1614 [CONTROL SYSTEM]
- DTC B1696 [CONTROL SYSTEM]
- DTC B1798 [CONTROL SYSTEM]
- DTC B1812 [CONTROL SYSTEM]
- DTC B1873 [CONTROL SYSTEM]
- DTC B2060 [CONTROL SYSTEM]
- DTC B2095 [CONTROL SYSTEM]
- DTC B2096 [CONTROL SYSTEM]
- DTC B2114 [CONTROL SYSTEM]
- DTC B2175 [CONTROL SYSTEM]
- DTC B2180 [CONTROL SYSTEM]
- DTC B2181 [CONTROL SYSTEM]
- DTC B2212 [CONTROL SYSTEM]
- DTC B2218 [CONTROL SYSTEM]
- DTC B2254 [CONTROL SYSTEM]
- DTC B2259 [CONTROL SYSTEM]
- DTC B2479 [CONTROL SYSTEM]
- DTC B2555 [CONTROL SYSTEM]
- DTC B2559 [CONTROL SYSTEM]
- DTC B2574 [CONTROL SYSTEM]
- DTC B2721 [CONTROL SYSTEM]
- DTC B2897 [CONTROL SYSTEM]
- DTC B2898 [CONTROL SYSTEM]
- DTC B2899 [CONTROL SYSTEM]
- DTC B2966 [CONTROL SYSTEM]
- DTC C1189 [CONTROL SYSTEM]
- DTC U2030 [CONTROL SYSTEM]
- DTC B1217 [CONTROL SYSTEM]
- DTC B2017 [CONTROL SYSTEM]
- DTC B2018 [CONTROL SYSTEM]
- DTC B2512 [CONTROL SYSTEM]
- On-Board Diagnostic (Multiplex Communication System): Diagnosis
- On-Board Diagnostic (Multiplex Communication System): Other
- DTC U0073, U2012 [MULTIPLEX COMMUNICATION SYSTEM]
- DTC U0073, U0516, U1900, U2516 [MULTIPLEX COMMUNICATION SYSTEM]
- Abbreviations
- Accessory Drive Belts
- Airbag
- Anti-Lock/traction Control
- Automatic HVAC System
- Automatic Trans
- Automatic Transaxle - Overhaul (FN4A-EL)
- Automatic Transaxle - Overhaul (FN4A-EL): Overhaul
- Automatic Transaxle - Overhaul (FS5A-EL)
- Automatic Transaxle - Overhaul (FS5A-EL): Overhaul
- Auxiliary Emission Control Systems
- Axle Shafts
- Basic Trouble Shooting
- Body Electrical
- Brakes
- Cabin Air Filter
- Charging System
- Check Lists
- Clutches Manual & Hydraulic
- Communication Devices
- Control System (HVAC): Removal & Installation
- Cooling System (Mechanical)
- Cruise Control Systems
- Diagnostic Connector Locations
- Door Locks & Anti-Theft Systems
- Drive Cycles
- Driveline/axles
- DTC Index
- Electrical Component Locations
- Electronic Steering
- Emission Applications
- Engine
- Engine Mechanical (L3 with TC) Service Information: Removal & Installation
- Engine Mechanical (Lf, L3) Service Information: Removal & Installation
- Engine Mechanical - Overhaul - 2.3L (L3 with TC): Overhaul
- Engine Performance
- Entertainment Systems
- Exhaust
- Exterior Body Panels
- Exterior Lights
- Exterior/interior Trim
- Fuel System
- Fuses & Circuit Breakers
- Gauges & Instrument Panels
- Heated Glass/defoggers
- Hoist/jack
- Identification
- Ignition Switch/steering Lock
- Ignition System
- Lubrication System
- Manual & Power Steering
- Manual Trans
- Manual Transaxle - Overhaul (A26MX-R)
- Manual Transaxle - Overhaul (A26MX-R): Overhaul
- Manual Transaxle - Overhaul (G35M-R): Overhaul
- Mechanical
- Mechanical - Hydraulic
- Metric Conversions
- Mode 6
- Obd-Ii Drive Cycles
- Parking Brake System
- Removal & Installation
- Reset Procedures
- Restraints Control Systems
- Seats
- Specifications
- Starter
- Steering
- Steering Column Switches
- Sun Roof/t-Top/convertible Top
- Suspension
- Suspension Front
- Suspension Rear
- Testing & Diagnostics
- Traction Control Disable
- Transmission
- Wheel & Tire System
- Wheel Alignment
- Wheel Hubs
- Windows
- Wiper/washer Systems
![Scheme 48: DTC U0073, U2012 [MULTIPLEX COMMUNICATION SYSTEM]](https://i.diagnostdata.com/repair/e6/e68efa974bae7e419c0e5394d3569eb95c622eb4457fc8f95ea0fadba008a451.webp)