AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-

tem) AC–45

DIAGNOSTIC TROUBLE CODE CHART

(2006/01- )
HINT:
When the air conditioning system functions properly, DTC
B1400/00 is output.
Air conditioning system
DTC No. Detection Item Trouble Area Memory See page
B1411/11 Room Temperature - Room temperature Memorized AC-43
Sensor Circuit sensor (8.5 min. or more)
- Wire harness between
room temperature sensor
and air conditioning
amplifier
- Air conditioning amplifier
B1412/12 Ambient Temperature - Ambient temperature Memorized AC-46
Sensor Circuit sensor (8.5 min. or more)
- Wire harness between
ambient temperature
sensor and combination
meter assembly
- Combination meter
assembly
- Air conditioning amplifier
- CAN communication line
B1413/13 Evaporator Temperature - No. 1 cooler thermistor Memorized AC-50
Sensor Circuit (Evaporator temperature (8.5 min. or more)
sensor)
- Wire harness between
No. 1 cooler thermistor
(evaporator temperature
sensor) and air
conditioning amplifier
- Air conditioning amplifier
B1421/21 Solar Sensor Circuit - Solar sensor Memorized AC-53
(Passenger Side) - Wire harness between (8.5 min. or more)
solar sensor and air
conditioning amplifier AC
- Air conditioning amplifier
B1422/22*1 Compressor Lock Sensor - Compressor and - AC-56
Circuit magnetic clutch
- Compressor and
magnetic clutch drive belt
- Compressor lock sensor
- Wire harness between
compressor lock sensor
and air conditioning
amplifier
- Air conditioning amplifier
B1423/23 Pressure Sensor Circuit - Air conditioning pressure - AC-59
sensor
- Wire harness between
air conditioning pressure
sensor and air
conditioning amplifier
- Air conditioning amplifier
B1424/24 Solar Sensor Circuit - Solar sensor Memorized AC-64
(Driver Side) - Wire harness between (8.5 min. or more)
solar sensor and air
conditioning amplifier
- Air conditioning amplifier
B1441/41 Air Mix Damper Control - Air mix control servo Memorized AC-67
Servo Motor Circuit motor (30 sec.)
(Passenger Side) - Air conditioning harness
- Air conditioning amplifier
 AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
AC–46 tem)

DTC No. Detection Item Trouble Area Memory See page

B1442/42 Air Inlet Damper Control - Air inlet control servo Memorized AC-69
Servo Motor Circuit motor (30 sec.)
- Air conditioning harness
- Air conditioning amplifier
B1443/43 Air Outlet Damper Control - Air outlet control servo Memorized AC-71
Servo Motor Circuit motor (30 sec.)
- Air conditioning harness
- Air conditioning amplifier
B1446/46 Air Mix Damper Control - Air mix control servo Memorized AC-73
Servo Motor Circuit (Driver motor (30 sec.)
Side) - Air conditioning harness
- Air conditioning amplifier
B1451/51 Compressor Solenoid - A/C Compressor*2 - AC-79
Circuit - Wire harness between
air conditioning amplifier
and A/C compressor*2
- Air conditioning amplifier
B1497/97 BUS IC Communication - Air conditioning harness - AC-83
Malfunction - Air conditioning amplifier
B1499/99 Multiplex Communication - Air conditioning amplifier - AC-86
Circuit - ECM
- Combination meter
assembly
- CAN communication line

HINT:
*1: DTC B1422/22 (Compressor Lock Sensor Circuit) is
indicated only for a currently occurring malfunction for 2GR-
FE.
To confirm DTC B1422/22, perform the following steps:
1. With the ignition switch ON, enter the DTC check mode.
2. Press the R/F (Recirculation/Fresh) switch to enter
actuator check mode, and set the operation to Step No. 3.
3. Press the AUTO switch to return to DTC check mode.
AC 4. The DTC is displayed after approximately 3 seconds.
*2: Compressor and pulley for 2AZ-FE, compressor and
magnetic clutch for 2GR-FE