Climate Control Unit
CLIMATE CONTROL UNIT - DTC TROUBLESHOOTING CHART
| DTC | Detection Item or Symptom | DTC type | Troubleshooting |
|---|---|---|---|
| B1200 | Communication bus line error (BUS-OFF) | Loss of communication | DTC Troubleshooting (see DTC B1200: COMMUNICATION BUS LINE ERROR (BUS-OFF) ) |
| B1205 | Climate control unit lost communication with gauge control module (VSP/NE message) | Loss of communication | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1206 | Climate control unit lost communication with gauge control module (coolant temp message) | Loss of communication | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1207 | Climate control unit lost communication with gauge control module (illumination message) | Loss of communication | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1225 | An open in the in-car temperature sensor circuit | Signal error | DTC Troubleshooting (see DTC B1225 OR DTC INDICATOR A AND AUTO: AN OPEN IN THE IN-CAR TEMPERATURE SENSOR CIRCUIT ) |
| B1226 | A short in the in-car temperature sensor circuit | Signal error | DTC Troubleshooting (see DTC B1226 OR DTC INDICATOR B AND AUTO: A SHORT IN THE IN-CAR TEMPERATURE SENSOR CIRCUIT ) |
| B1227 | An open in the outside air temperature sensor circuit | Signal error | DTC Troubleshooting (see DTC B1227 OR DTC INDICATOR C AND AUTO: AN OPEN IN THE OUTSIDE AIR TEMPERATURE SENSOR CIRCUIT ) |
| B1228 | A short in the outside air temperature sensor circuit | Signal error | DTC Troubleshooting (see DTC B1228 OR DTC INDICATOR D AND AUTO: A SHORT IN THE OUTSIDE AIR TEMPERATURE SENSOR CIRCUIT ) |
| B1229 | An open in the sunlight sensor circuit | Signal error | DTC Troubleshooting (see DTC B1229 OR DTC INDICATOR E AND AUTO: AN OPEN IN THE SUNLIGHT SENSOR CIRCUIT ) |
| B1230 | A short in the sunlight sensor circuit | Signal error | DTC Troubleshooting (see DTC B1230 OR DTC INDICATOR F AND AUTO: A SHORT IN THE SUNLIGHT SENSOR CIRCUIT ) |
| B1231 | An open in the evaporator temperature sensor circuit | Signal error | DTC Troubleshooting (see DTC B1231 OR DTC INDICATOR G AND AUTO: AN OPEN IN THE EVAPORATOR TEMPERATURE SENSOR CIRCUIT ) |
| B1232 | A short in the evaporator temperature sensor circuit | Signal error | DTC Troubleshooting (see DTC B1232 OR DTC INDICATOR H AND AUTO: A SHORT IN THE EVAPORATOR TEMPERATURE SENSOR CIRCUIT ) |
| B1233 | An open in the air mix control motor circuit | Signal error | DTC Troubleshooting (see DTC B1233 OR DTC INDICATOR A AND A/C: AN OPEN IN THE AIR MIX CONTROL MOTOR CIRCUIT ) |
| B1234 | A short in the air mix control motor circuit | Signal error | DTC Troubleshooting (see DTC B1234 OR DTC INDICATOR B AND A/C: A SHORT IN THE AIR MIX CONTROL MOTOR CIRCUIT ) |
| B1235 | A problem in the air mix control motor circuit, linkage, door, or motor | Signal error | DTC Troubleshooting (see DTC B1235 OR DTC INDICATOR C AND A/C: A PROBLEM IN THE AIR MIX CONTROL MOTOR CIRCUIT, LINKAGE, DOOR, OR MOTOR ) |
| B1239 | An open or short in the mode control motor circuit | Signal error | DTC Troubleshooting (see DTC B1239 OR DTC INDICATOR D AND A/C: AN OPEN OR SHORT IN THE MODE CONTROL MOTOR CIRCUIT ) |
| B1240 | A problem in the mode control motor circuit, linkage, door, or motor | Signal error | DTC Troubleshooting (see DTC B1240 OR DTC INDICATOR E AND A/C: A PROBLEM IN THE MODE CONTROL MOTOR CIRCUIT, LINKAGE, DOOR, OR MOTOR ) |
| B1241 | A problem in the blower motor circuit | Signal error | DTC Troubleshooting (see DTC B1241 OR DTC INDICATOR F AND A/C: A PROBLEM IN THE BLOWER MOTOR CIRCUIT ) |
| B2967 | An open in the humidity sensor circuit | Signal error | DTC Troubleshooting (see DTC B2967 OR DTC INDICATOR J AND AUTO: AN OPEN IN THE HUMIDITY SENSOR CIRCUIT ) |
| B2968 | A short in the humidity sensor circuit | Signal error | DTC Troubleshooting (see DTC B2968 OR DTC INDICATOR K AND AUTO: A SHORT IN THE HUMIDITY SENSOR CIRCUIT ) |
| B2969 | Climate control unit lost communication with MICU (WIPSW message) | Loss of communication | DTC Troubleshooting (see DTC B2969: CLIMATE CONTROL UNIT LOST COMMUNICATION WITH MICU (WIPSW MESSAGE) ) |