Communication System. Lexus Gs430, Gs300. Uzs190 Grs190
Multiplex Communication. Lexus Gs430, Gs300. Uzs190 Grs190
Multiplex Communication System -- Diagnostic Trouble Code Chart |
- If a malfunction code is displayed during the DTC check, check the circuit corresponding to the code in the table below. Proceed to the page given for the circuit.
| DTC No. | Detection Item | Trouble Area | See page |
| B1200 | MPX Body ECU Stop | - Multiplex network body ECU - Wire harness | Click here |
| B1204 | Driver Side Seat Switch ECU Communication Stop | - Integration control and panel assembly - Wire harness | Click here |
| B1205 | AFS ECU Communication Stop | - Headlight swivel ECU assembly - Wire harness | Click here |
| B1206 | P/W Master Switch Communication Stop | - Multiplex network master switch assembly - Wire harness | Click here |
| B1207 | Smart ECU Stop | - Certification ECU - Wire harness | Click here |
| B1210 | Power ECU Stop | - Power source control ECU - Wire harness | Click here |
| B1211 | Driver Door ECU Communication Stop | - Multiplex network door ECU front LH (front door ECU LH) - Wire harness | Click here |
| B1212 | Front Passenger Door ECU Communication Stop | - Multiplex network door ECU front RH (front door ECU RH) - Wire harness | Click here |
| B1213 | Tilt and Telescopic ECU Communication Stop | - Multiplex tilt and telescopic ECU - Wire harness | Click here |
| B1214 | Door System Communication Bus Malfunction (+B Short) | - Certification ECU - Position control ECU and switch assembly (front passenger side) - Multiplex network door ECU front RH (front door ECU RH) - Multiplex network door ECU rear RH (rear door RH) - Multiplex network switch (rear RH) - Multiplex network door ECU rear LH (rear door LH) - Multiplex network switch (rear LH) - Multiplex network door ECU front LH (front door ECU LH) - Multiplex network master switch assembly - Sliding roof control ECU - Overhead junction block - Power source control ECU - Network gateway ECU - Wire harness | Click here |
| B1215 | Door System Communication Bus Malfunction (GND Short) | - Certification ECU - Position control ECU and switch assembly (front passenger side) - Multiplex network door ECU front RH (front door ECU RH) - Multiplex network door ECU rear RH (rear door RH) - Multiplex network switch (rear RH) - Multiplex network door ECU rear LH (rear door LH) - Multiplex network switch (rear LH) - Multiplex network door ECU front LH (front door ECU LH) - Multiplex network master switch assembly - Sliding roof control ECU - Overhead junction block - Power source control ECU - Network gateway ECU - Wire harness | Click here |
| B1216 | Rear Door ECU RH Communication Stop | - Multiplex network door ECU rear RH (rear door RH) - Wire harness | Click here |
| B1217 | Rear Door ECU LH Communication Stop | - Multiplex network door ECU rear LH (rear door LH) - Wire harness | Click here |
| B1247 | Tire Pressure Monitor Receiver Communication Stop | - Tire pressure warning ECU - Wire harness | Click here |
| B1248 | AVC-LAN Communication Impossible | - Radio and player ECU - Wire harness | Click here |
| B1262 | A/C ECU Communication Stop | - A/C amplifier assembly No. 2 (A/C ECU) - Wire harness | Click here |
| B1263 | Luggage Room Junction Block ECU Communication Stop | - Multiplex network rear ECU (luggage room junction block ECU) - Wire harness | Click here |
| B1266 | Instrument Panel System Communication Bus Malfunction (+B Short) | - Combination switch assembly (windshield wiper switch) - Center airbag sensor assembly - A/C amplifier assembly No. 2 (A/C ECU) - Integration control and panel assembly (mirror switch) - Network gateway ECU - Wire harness | Click here |
| B1267 | Instrument Panel System Communication Bus Malfunction (GND Short) | - Combination switch assembly (windshield wiper switch) - Airbag sensor assembly center - A/C amplifier assembly No. 2 (A/C ECU) - Integration control and panel assembly (mirror switch) - Network gateway ECU - Wire harness | Click here |
| B1271 | Combination Meter ECU Communication Stop | - Combination meter assembly (meter ECU) - Wire harness | Click here |
| B1272 | Power Seat ECU Communication Stop | - Position control ECU and switch assembly (driver side) - Wire harness | Click here |
| B1273 | Sliding Roof ECU Communication Stop | - Sliding roof control ECU - Wire harness | Click here |
| B1278 | Combination Switch ECU Communication Stop | - Combination switch assembly (windshield wiper switch) - Wire harness | Click here |
| B1279 | Rain Sensor Communication Stop | - Rain sensor - Wire harness | Click here |
| B1280 | Left Side Junction Block ECU Communication Stop | - Cowl side junction block LH (cowl side junction block ECU LH) - Wire harness | Click here |
| B1281 | Airbag ECU Communication Stop | - Center airbag sensor assembly - Wire harness | Click here |
| B1289 | Passenger Seat ECU Communication Stop | - Position control ECU and switch assembly (front passenger side) - Wire harness | Click here |
| B1291 | Light System Communication Bus Malfunction (+B Short) | - Cowl side junction block RH (cowl side junction block ECU RH) - Multiplex tilt and telescopic ECU - Combination switch assembly (windshield wiper switch) - Headlight swivel ECU assembly (w/ AFS) - Front controller (w/o AFS) - Cowl side junction block LH (cowl side junction block ECU LH) - Position control ECU and switch assembly (driver side) - Luggage room junction block ECU - Network gateway ECU - Wire harness | Click here |
| B1292 | Light System Communication Bus Malfunction (GND Short) | - Cowl side junction block RH (cowl side junction block ECU RH) - Multiplex tilt and telescopic ECU - Combination switch assembly (windshield wiper switch) - Headlight swivel ECU assembly (w/ AFS) - Front controller (w/o AFS) - Cowl side junction block LH (cowl side junction block ECU LH) - Position control ECU and switch assembly (driver side) - Luggage room junction block ECU - Network gateway ECU - Wire harness | Click here |
| B1296 | Front Light ECU Communication Stop | - Engine room No. 2 relay block (front controller) - Wire harness | Click here |
| B1297 | Clearance Sonar ECU Communication Stop | - Clearance warning ECU assembly - Wire harness | Click here |
- When "+B of GND short malfunction of communication bus" DTCs (B1214, B1215, etc.) are detected at the same time as "communication stop" DTCs (B1211, B1212, etc.), repair the "+B or GND short malfunction of communication bus" DTCs first.