Justin's Toyota Service

DTC No.

Detection Item

Trouble Area

B1411/11 *1

Room Temperature Sensor Circuit

1. A/C room temperature sensor

2. Harness or connector between A/C room temperature sensor and A/ C amplifier

3. A/C amplifier

Memorized (8.5 min. or more)

AC-46

B1412/12 *2

Ambient Temperature Sensor Circuit

1. A/C ambient temperature sensor

2. Harness or connector between A/C ambient temperature sensor and engine room J/B assembly

3. Engine room J/B assembly

Memorized (8.5 min. or more)

AC-50

B1413/13

Evaporator Temperature Sensor Circuit

1. A/C evaporator temperature sensor

2. Harness or connector between A/C evaporator temperature sensor and A/ C amplifier

3. A/C amplifier

Memorized (8.5 min. or more)

AC-55

B1421/21 *3

Solar Sensor Circuit (Passenger Side)

1. A/C solar sensor

2. Harness or connector between A/C solar sensor and A/C amplifier

3. A/C amplifier

Memorized (8.5 min. or more) (Only when circuit is shorted)

AC-58

B1422/22 *4

Compressor Lock Sensor Circuit

1. A/C lock sensor (w/ magnet clutch compressor assembly)

2. Compressor drive belt

3. Harness or connector between A/C amplifier and ECM

4. Harness or connector between A/C lock sensor (w/ magnet clutch compressor assembly) and A/C amplifier

6. A/C amplifier

AC-62

B1423/23

Pressure Switch Circuit

1. A/C Pressure sensor

2. Harness or connector between A/C pressure sensor and A/C amplifier

3. Refrigerant pipe line

4. A/C amplifier

AC-66

B1424/24 *3

Solar Sensor Circuit (Driver Side)

1. A/C solar sensor

2. Harness or connector between A/C solar sensor and A/C amplifier

3. A/C amplifier

Memorized (8.5 min. or more) (Only when circuit is shorted)

AC-70

B1441/41

Air Mix Damper Control Servo Motor Circuit (Passenger Side)

1. Air mix control servomotor

2. Air conditioning harness assembly

3. A/C amplifier

Memorized (30 sec. or more)

AC-74

DTC No.

Detection Item

Trouble Area

Memory*6

See page

B1442/42

Air Inlet Damper Control Servo Motor Circuit

1. Air inlet control servomotor

2. Air conditioning harness assembly

3. A/C amplifier

Memorized (30 sec. or more)

AC-76

B1443/43

Air Outlet Damper Control Servo Motor Circuit

1. Air outlet control servomotor

2. Air conditioning harness assembly

3. A/C amplifier

Memorized (30 sec. or more)

AC-78

B1446/46

Air Mix Damper Control Servo Motor Circuit (Driver Side)

1. Air mix control servomotor

2. Air conditioning harness assembly

3. A/C amplifier

Memorized (30 sec. or more)

AC-80

B1451/51

Compressor Solenoid Circuit

1. w/ magnet clutch compressor assembly

2. Harness and connector between A/C amplifier and solenoid of the externally changeable compressor

3. A/C amplifier

AC-82

B1463/63 *5

Driver Side Seat Heater Temperature Sensor Circuit

1. Seat heater control sub-assembly

2. Seat heater LH (Seat cushion)

3. Harness or connector between seat heater control sub-assembly and A/C amplifier

4. A/C amplifier

AC-85

B1464/64 *5

Front Passenger Side Seat Heater Temperature Sensor Circuit

1. Seat heater control sub-assembly

2. Seat heater LH (Seat cushion)

3. Harness or connector between seat heater control sub-assembly and A/C amplifier

4. A/C amplifier

AC-88

B1497/97

BUS IC Communication Malfunction

1. Air conditioning harness assembly

2. A/C amplifier

Memorized (10 sec. or more)

AC-91

B1499/99

Multiplex Communication Circuit

Open in multiplex communication circuit

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AC-93