AIR CONDITIONING SYSTEM DIAGNOSTIC TROUBLE CODE CHART

Table 1. Air Conditioning System

DTC No.

Detection Item

Trouble Area

Memory

Note

Link

B1411/11

Room Temperature Sensor Circuit

  • Cooler thermistor (room temperature sensor)

  • Harness or connector

  • Air conditioning amplifier assembly

Stored

(4 seconds or more)

If the front room temperature is approx. -18.6°C (-1.48°F) or less, DTC B1411/11 may be stored even though the system is normal.

Click here

B1412/12

Ambient Temperature Sensor Circuit

  • Cooler thermistor (ambient temperature sensor)

  • Harness or connector

  • Air conditioning amplifier assembly

Stored

(4 seconds or more)

If the ambient temperature is approx. -52.9°C (-63.22°F) or less, DTC B1412/12 may be stored even though the system is normal.

Click here

B1413/13

Evaporator Temperature Sensor Circuit

  • No. 1 cooler thermistor

  • Air conditioning harness assembly

  • Air conditioning amplifier assembly

Stored

(4 seconds or more)

-

Click here

B1417/17

Rear Evaporator Temperature Sensor Circuit

  • No. 2 air conditioning harness assembly (rear evaporator temperature sensor)

  • Harness or connector

  • Air conditioning amplifier assembly

Stored

(4 seconds or more)

-

Click here

B1418/18

Exhaust Gas Sensor Circuit

  • Smog ventilation sensor

  • Harness or connector

  • Air conditioning amplifier assembly

-

-

Click here

B1419/19

Rear Room Temperature Sensor Circuit

  • Cooler thermistor (rear room temperature sensor)

  • Harness or connector

  • Air conditioning amplifier assembly

Stored

(4 seconds or more)

-

Click here

B1422/22

Compressor Lock Sensor Circuit

  • Cooler compressor assembly (A/C lock sensor)

  • Compressor drive belt

  • Harness or connector

  • Air conditioning amplifier assembly

  • CAN communication system

-

-

Click here

B1423/23

Pressure Sensor Circuit

  • Air conditioner pressure sensor

  • Harness or connector

  • Cooler expansion valve

  • Cooler condenser assembly

  • Cooler dryer

  • Refrigerant pipe line

  • Air conditioning amplifier assembly

Stored

(4 seconds or more)

-

Click here

B1441/41

Air Mix Damper Control Servo Motor Circuit (Passenger Side)

  • No. 2 air conditioning radiator damper servo sub-assembly (front passenger side air mix damper servo)

  • Air conditioning harness assembly

  • Air conditioning amplifier assembly

Stored

(30 seconds or more)

-

Click here

B1442/42

Air Inlet Damper Control Servo Motor Circuit

  • Recirculation damper servo sub-assembly

  • Air conditioning harness assembly

  • Air conditioning amplifier assembly

Stored

(30 seconds or more)

-

Click here

B1443/43

Air Outlet Damper Control Servo Motor Circuit

  • No. 1 air conditioning radiator damper servo sub-assembly (mode damper servo)

  • Air conditioning harness assembly

  • Air conditioning amplifier assembly

Stored

(30 seconds or more)

-

Click here

B1446/46

Air Mix Damper Control Servo Motor Circuit (Driver Side)

  • No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix damper servo)

  • Air conditioning harness assembly

  • Air conditioning amplifier assembly

Stored

(30 seconds or more)

-

Click here

B1447/47

Rear Air Mix Damper Control Servo Motor Circuit

  • Rear No. 1 cooling unit damper servo sub-assembly (rear air mix damper servo)

  • No. 2 air conditioning harness assembly

  • Harness or connector

  • Air conditioning amplifier

Stored

(30 seconds or more)

-

Click here

B1449/49

Rear Air Outlet Damper Control Servo Motor Circuit

  • Rear No. 2 cooling unit damper servo sub-assembly (rear mode damper servo)

  • No. 2 air conditioning harness assembly

  • Harness or connector

  • Air conditioning amplifier assembly

Stored

(30 seconds or more)

-

Click here

B1461/61

Emission Gas NOx Sensor Circuit

  • Smog ventilation sensor

  • Harness or connector

  • Air conditioning amplifier assembly

-

-

Click here

B1497/97

BUS IC Communication Malfunction

  • Air conditioning harness assembly

  • No. 2 air conditioning harness assembly

  • No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix damper servo)

  • No. 2 air conditioning radiator damper servo sub-assembly (front passenger side air mix damper servo)

  • No. 1 air conditioning radiator damper servo sub-assembly (mode damper servo)

  • Recirculation damper servo sub-assembly

  • Rear No. 1 cooling unit damper servo subassembly (rear air mix damper servo)

  • Rear No. 2 cooling unit damper servo subassembly (rear mode damper servo)

  • Air conditioning amplifier assembly

  • Harness or connector

Stored

(10 seconds or more)

-

Click here

B14A2

Driver Side Solar Sensor Short Circuit

  • Automatic light control sensor (solar sensor)

  • Harness or connector

  • Main body ECU (multiplex network body ECU)

  • Air conditioning amplifier assembly

Stored

(4 seconds or more)

If the check is performed in a dark place, DTC B14A3 (front passenger side solar sensor short circuit) may also be stored.

Click here

B14A3

Front Passenger Side Solar Sensor Short Circuit

  • Automatic light control sensor (solar sensor)

  • Harness or connector

  • Main body ECU (multiplex network body ECU)

  • Air conditioning amplifier assembly

Stored

(4 seconds or more)

If the check is performed in a dark place, DTC B14A2 (driver side solar sensor short circuit) may also be stored.

Click here

U0100

Lost Communication with ECM

  • CAN communication system

  • ECM

-

-

Click here

U0142

Lost Communication with Main Body ECU

  • CAN communication system

  • Main body ECU (multiplex network body ECU)

-

-

Click here

U0155

Lost Communication with Combination Meter

  • CAN communication system

  • Combination meter assembly

-

-

Click here