Last Modified: 6-7-2017 6.8:8.0.40 Doc ID: RM0000018NP003X
Model Year Start: 2007 Model: Land Cruiser Prod Date Range: [08/2006 -           ]
Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM: DIAGNOSTIC TROUBLE CODE CHART; 2007 MY Land Cruiser [08/2006 -        ]

DIAGNOSTIC TROUBLE CODE CHART

If malfunction code is displayed during the DTC check, check the circuit listed for that code in the table below. Proceed to the page given for that circuit.

HINT:

  • If DTC 00 is displayed, the air conditioning system is normal.
  • To confirm DTC 22, perform the following steps.
    • With the engine ON, enter the DTC check mode.
    • Press the R/F switch to enter actuator check mode, and set the operation to Step No. 3.
    • Press the AUTO switch to return to DTC check mode.
    • The DTC is displayed after approximately 3 seconds.

Air conditioning system

DTC Code

Detection Item

Trouble Area

Memory

Diagnosis Note

See page

11*1

Room Temperature Sensor Circuit

- Front room temp. sensor

- Harness or connector between front room temp. sensor and A/C amplifier

-A/C amplifier

○

(8.5 min. or more)

If the room temp. is approx. -20°C (-4°F) or less, DTC 11 may be output even though the system is normal.

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 11; Room Temperature Sensor Circuit

12*2

Ambient Temperature Sensor Circuit

- Ambient temp. sensor

- Harness or connector between ambient temp. sensor and A/C amplifier

- A/C amplifier

○

(8.5 min. or more)

If the ambient temperature is approx. -50°C (-58°F) or less, a DTC may be output even though the system is normal.

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 12; Ambient Temperature Sensor Circuit

13

Evaporator Temperature Sensor Circuit

- Front evaporator temp. sensor

- Harness or connector between front evaporator temp. sensor and A/C amplifier

- A/C amplifier

○

(8.5 min. or more)

-

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 13; Evaporator Temperature Sensor Circuit

14

Engine Coolant Temperature Communication Circuit

- Engine coolant temp. sensor

- Harness or connector between engine coolant temp. sensor and ECM

- Harness or connector between ECM and A/C amplifier

- ECM- A/C amplifier

-

-

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 14; Engine Coolant Temperature Communication Circuit

17

Rear Evaporator Temperature Sensor Circuit

- Rear evaporator temp. sensor

- Harness or connector between Rear evaporator temp. sensor and rear A/C amplifier

- A/C amplifier

Rear A/C amplifier communication data

-

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 17; Rear Evaporator Temperature Sensor Circuit

19*1

Rear Room Temperature Sensor Circuit

- Rear room temp. sensor

- Harness or connector between rear room temp. sensor and rear A/C amplifier

- Rear A/C amplifier

Rear A/C amplifier communication data

If the room temp. is approx. -20°C (-4°F) or less, DTC 11 may be output even though the system is normal.

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 19; Rear Room Temperature Sensor Circuit

21*3

Solar Sensor Circuit

- Solar sensor

- Harness or connector between solar sensor and A/C amplifier

- A/C amplifier

○

(8.5 min. or more)

If the check is being performed in a dark place, DTC 21 (solar sensor circuit abnormal) could be displayed. In this case, perform DTC check again while shining a light, such as an inspection light, on the solar sensor. If DTC 21 is still displayed, there could be trouble in the solar sensor circuit.

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 21; Solar Sensor Circuit

22*4

Compressor Lock Sensor Circuit

- Compressor driver belt

- Compressor lock sensor

- Compressor

- ECM

- Harness or connector between compressor lock sensor and ECM

- Harness or connector between ECM and A/C amplifier

- A/C amplifier

-

Compressor lock (DTC 22) is indicated only for a current malfunction.

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 22; Compressor Lock Sensor Circuit

23

Pressure Switch Circuit

- Pressure switch

- Harness or connector between pressure switch and A/C amplifier

- Refrigerant pipe line

- A/C amplifier

-

-

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 23; Pressure Switch Circuit

26

System Too Rich

- Pressure switch

- Harness or connector between rear inlet air temp. sensor and rear A/C amplifier

- Rear A/C amplifier

Rear A/C amplifier communication data

-

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 26; System Too Rich

31

Air Mix Damper Position Sensor Circuit

- Front air mix damper position sensor

- Harness or connector between front air mix damper position sensor and A/C amplifier

- A/C amplifier

○

(1 min. or more)

-

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 31,41; Air Mix Damper Position Sensor Circuit

32

Air Inlet Damper Position Sensor Circuit

- Air inlet damper position sensor

- Harness or connector between air inlet damper position sensor and A/C amplifier

- A/C amplifier

○

(1 min. or more)

-

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 32,42; Air Inlet Damper Position Sensor Circuit

37

Rear Air Mix Damper Position Sensor Circuit

- Rear air mix damper position sensor

- Harness or connector between rear air mix damper position sensor and rear A/C amplifier

- Rear A/C amplifier

Rear A/C amplifier communication data

-

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 37,47; Rear Air Mix Damper Position Sensor Circuit

41

Air Mix Damper Control Servo Motor Circuit (Passenger Side)

- Front air mix damper control servo motor

- Harness or connector between rear air mix damper control servo motor and rear A/C amplifier

- Rear A/C amplifier

○

(15 sec. or more)

-

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 31,41; Air Mix Damper Position Sensor Circuit

41

Air Mix Damper Control Servo Motor Circuit (Passenger Side)

- Front air mix damper control servo motor

- Harness or connector between rear air mix damper control servo motor and rear A/C amplifier

- Rear A/C amplifier

○

(15 sec. or more)

-

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 41; Air Mix Damper Control Servo Motor Circuit (Passenger Side)

42

Air Inlet Damper Control Servo Motor Circuit

- Air inlet damper control servo motor

- Harness or connector between air inlet damper control servo motor and A/C amplifier

- Rear A/C amplifier

○

(15 sec. or more)

-

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 32,42; Air Inlet Damper Position Sensor Circuit

42

Air Inlet Damper Control Servo Motor Circuit

- Air inlet damper control servo motor

- Harness or connector between air inlet damper control servo motor and A/C amplifier

- Rear A/C amplifier

○

(15 sec. or more)

-

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 42; Air Inlet Damper Control Servo Motor Circuit

47

Rear Air Mix Damper Control Servo Motor Circuit

- Rear air mix damper control servo motor

- Harness or connector between rear air mix damper control servo motor and rear A/C amplifier

- Rear A/C amplifier

Rear A/C amplifier communication data

-

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 37,47; Rear Air Mix Damper Position Sensor Circuit

47

Rear Air Mix Damper Control Servo Motor Circuit

- Rear air mix damper control servo motor

- Harness or connector between rear air mix damper control servo motor and rear A/C amplifier

- Rear A/C amplifier

Rear A/C amplifier communication data

-

2007 MY Land Cruiser [08/2006 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: 47; Rear Air Mix Damper Control Servo Motor Circuit

HINT:

  • *1: If the room temperature is approx. -20°C (-4°F) or less, DTC 11 may be output even though the system is normal.
  • *2: If the ambient temperature is approx. -50°C (-58°F) or less, a DTC may be output even though the system is normal.
  • *3: If the check is being performed in a dark place, DTC 21 (solar sensor circuit abnormal) could be displayed. In this case, perform DTC check again while shining a light, such as inspection light, on the solar sensor. If DTC 21 is still displayed, there could be trouble in the solar sensor circuit.
  • *4: Compressor lock (DTC 22) is indicated only for a current malfunction.