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Sensor Check Table

NOTE:
  • When the sunload sensor check is performed indoors or in the shade, it could be diagnosed as having an open circuit. Always check the sunload sensor with the sun shining on it.
  • When currently malfunctioning, AUTO flashes on display.
  • Past malfunction can be cleared by disconnecting the battery ground cable.
Display screen Sensor Trouble contents Note
21 Open circuit in in-vehicle sensor In-vehicle air temperature sensor circuit is open. Refer to DTC B1602 IN-VEHICLE SENSOR OPEN .
-21 Short-circuit in in-vehicle sensor In-vehicle air temperature sensor circuit is shorted. Refer to DTC B1601 IN-VEHICLE SENSOR SHORT .
22 Ambient sensor trouble or communication failure Sensor trouble or communication failure Refer to DTC B1635 OUT SIDE TEMPERATURE SENSOR CIRCUIT ABNORMALITY (AIR CONDITIONER) .
23 Open circuit in evaporator sensor Post evaporator sensor circuit is open. Refer to DTC B1604 EVAPORATOR SENSOR OPEN .
-23 Short-circuit in evaporator sensor Post evaporator sensor circuit is shorted. Refer to DTC B1603 EVAPORATOR SENSOR SHORT .
24 Engine coolant temperature sensor trouble or communication failure Sensor trouble or communication failure -
25 Open circuit in sunload sensor Sunload sensor circuit is open. (1) Refer to DTC B1608 SUNLOAD SENSOR OPEN .
-25 Short-circuit in sunload sensor Sunload sensor circuit is shorted. Refer to DTC B1607 SUNLOAD SENSOR SHORT .
26 Open circuit in air mix door actuator - potentiometer (driver's) Air mix door actuator potentiometer circuit is open. Refer to DTC B1610 AIRMIX DOOR ACTUATOR POTENTIOMETER CIRCUIT OPEN (DRIVER'S) .
-26 Open circuit in air mix door actuator - potentiometer (passenger's) Air mix door actuator potentiometer circuit is open. Refer to DTC B1613 AIRMIX DOOR ACTUATOR POTENTIOMETER CIRCUIT OPEN (PASSENGER'S) .
27 Short-circuit in air mix door actuator - potentiometer (driver's) Air mix door actuator potentiometer circuit is shorted. Refer to DTC B1611 AIRMIX DOOR ACTUATOR POTENTIOMETER CIRCUIT SHORT (DRIVER'S) .
-27 Short-circuit in air mix door actuator - potentiometer (passenger's) Air mix door actuator potentiometer circuit is shorted. Refer to DTC B1614 AIRMIX DOOR ACTUATOR POTENTIOMETER CIRCUIT SHORT (PASSENGER'S) .
28 Open circuit in mode door actuator - potentiometer Mode door actuator potentiometer circuit is open. Refer to DTC B1620 MODE DOOR ACTUATOR POTENTIOMETER CIRCUIT OPEN .
29 Short-circuit in mode door actuator - potentiometer Mode door actuator potentiometer circuit is shorted. Refer to DTC B1621 MODE DOOR ACTUATOR POTENTIOMETER CIRCUIT SHORT .
41 Open circuit in rear vent door actuator - potentiometer(2) Rear vent door actuator potentiometer circuit is open. Refer to DTC B1630 REAR VENT DOOR ACTUATOR POTENTIOMETER CIRCUIT OPEN .
-41 Short-circuit in rear vent door actuator-potentiometer(2) Rear vent door actuator potentiometer circuit is shorted. Refer to DTC B1631 REAR VENT DOOR ACTUATOR POTENTIOMETER CIRCUIT SHORT .
42 Open circuit in refrigerant pressure sensor Pressure sensor circuit is open. (1) Refer to DTC B1605 REFRIGERANT FLOW SENSOR CIRCUIT OPEN .
-42 Short-circuit in refrigerant pressure sensor Pressure sensor circuit is shorted. (1) Refer to DTC B1606 REFRIGERANT FLOW SENSOR CIRCUIT SHORT .
43 Open circuit in refrigerant flow sensor Refrigerant flow circuit is open. (1) Refer to DTC B1642 REFRIGERANT FLOW SENSOR CIRCUIT OPEN .
-43 Short-circuit in refrigerant flow sensor Refrigerant flow sensor circuit is shorted. (1) Refer to DTC B1641 REFRIGERANT FLOW SENSOR CIRCUIT SHORT .
44 Refrigerant flow sensor circuit failure Refrigerant flow sensor is faulty. -
45 Open circuit in sunload sensor (auto light control) Sunload sensor circuit is open. Refer to DTC B1608 SUNLOAD SENSOR OPEN .
-45 Short-circuit in sunload sensor (auto light control) Sunload sensor circuit is shorted. (1) Refer to DTC B1607 SUNLOAD SENSOR SHORT .
46 Variable flow change solenoid duty circuit failure Variable flow change solenoid duty circuit is open or shorted. (1) Refer to DTC B1643 VARIABLE FLOW CHANGE SOLENOID DUTY CIRCUIT ABNORMAL .
47 Air mix door actuator - lock (driver's) Air mix door actuator does not operate due to being stuck or other reasons. Refer to DTC B1612 AIRMIX DOOR ACTUATOR LOCK (DRIVER'S) .
48 Air mix door actuator - lock (passenger's) Air mix door actuator does not operate due to being stuck or other reasons. Refer to DTC B1615 AIRMIX DOOR ACTUATOR LOCK (PASSENGER'S) .
49 Mode door actuator - lock Mode door actuator does not operate due to being stuck or other reasons. Refer to DTC B1622 MODE DOOR ACTUATOR LOCK .
53 Heater control panel communication failure Communication with heater control panel is impossible. (1) Refer to DTC U0028 HEATER CONTROL PANEL COMMUNICATION ERROR .
54 CAN communication bus off Bus off(1) Refer to DTC U0001 CAN COMMUNICATION BUS OFF .
55 CAN communication error Communication error(1) Refer to DTC U0002 CAN COMMUNICATION ERROR .
20 blinking When all conditions are normal -
(1) Displays current malfunction only.
(2) Displays for vehicles with rear seat air conditioning only.
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