Diagnostic Trouble Code Chart
WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.
If malfunction code is displayed during DTC check, check the circuit corresponding to the code in the table below. Proceed to the page given for the circuit.
MULTIPLEX COMMUNICATION SYSTEM
DIAGNOSTIC TROUBLE CODE CHART
| DTC No. | Detection Item | Trouble Area |
|---|---|---|
| B1200 | MPX Body ECU Stop | Instrument panel junction block (multiplex network body ECU) Wire harness |
| B1205 | AFS ECU Communication Stop | AFS ECU Wire harness |
| B1206 | P/W Master Switch Communication Stop |
Multiplex network master switch assembly Wire harness |
| B1208 | Passenger Side Outer Mirror ECU |
Outer mirror control ECU RH Wire harness |
| B1209 | Driver Side Outer Mirror | Outer mirror control ECU LH Wire harness |
| B1213 | Tilt and Telescopic ECU Communication Stop |
Multiplex tilt and telescopic ECU Wire harness |
| B1214 | Door System Communication Bus Malfunction (+B Short) | AFS ECU Multiplex back door ECU Transponder key ECU Position control ECU and switch Outer mirror control ECU RH Outer mirror control ECU LH Instrument panel junction block (multiplex network body ECU) Multiplex network master switch Multiplex tilt and telescopic ECU Multiplex network gateway ECU Wire harness |
| B1215 | Door System Communication Bus Malfunction (GND Short) | AFS ECU Multiplex back door ECU Transponder key ECU Position control ECU and switch Outer mirror control ECU RH Outer mirror control ECU LH Instrument panel junction block (multiplex network body ECU) Multiplex network master switch Multiplex tilt and telescopic ECU Multiplex network gateway ECU Wire harness |
| B1245 | Wiper ECU Communication Stop | Auto wiper ECU Wire harness |
| B1248 | AVC-LAN Communication Impossible | AVC-LAN (radio receiver assembly or multi-display assembly) Wire harness |
| B1262 | A/C ECU Communication Stop | Air conditioning amplifier Wire harness |
| B1266 | Instrument Panel System Communication Bus Malfunction (+B Short) | Multiplex network gateway ECU Air conditioning amplifier Auto wiper ECU Center cluster integration panel Center airbag sensor assembly Combination meter Overhead junction block Rain sensor Sliding roof control ECU Wire harness |
| B1267 | Instrument Panel System Communication Bus Malfunction (GND Short) | Multiplex network gateway ECU Air conditioning amplifier Auto wiper ECU Center cluster integration panel Center airbag sensor assembly Combination meter Overhead junction block Rain sensor Sliding roof control ECU Wire harness |
| B1271 | Combination Meter ECU Communication Stop |
Combination meter assembly Wire harness |
| B1272 | Power Seat ECU Communication Stop | Position control ECU and switch assembly Wire harness |
| B1273 | Sliding Roof ECU Communication Stop | Sliding roof control ECU Wire harness |
| B1279 | Rain Sensor Communication Stop | Rain sensor Wire harness |
| B1281 | Airbag ECU Communication Stop | Center airbag sensor assembly Wire harness |
| B1287 | Back Door ECU Communication Stop | Multiplex back door ECU Wire harness |
| B1294 | Immobilizer ECU Communication Stop | Transponder key ECU Wire harness |
| B1277 | Center Cluster Integration Panel ECU Communication Stop |
Center cluster integration panel Wire harness |
When "+B of GND short malfunction of communication bus" DTCs (B1214 and B1215) are detected at the same time as "communication stop" DTCs (B1200, B1205, B1206, B1208, B1209, B1213, B1272, B1287 and B1294), please repair the "+B or GND short malfunction of communication bus" DTCs first.
When "+B of GND short malfunction of communication bus" DTCs (B1266 and B1267) are detected at the same time as "communication stop" DTCs (B1245, B1262, B1271, B1273, B1277, B1279 and B1281), please repair the "+B or GND short malfunction of communication bus" DTCs first.