Dtc B1429/29 Rear Air Foot Duct Sensor Circuit On Front Passenger Side

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Heating Air Conditioning. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING GTS (FOOT DUCT SENSOR [REAR P])

INSPECT COOLER THERMISTOR (DUCT SENSOR)

CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - COOLER THERMISTOR [DUCT SENSOR])

DTC B1429/29 Rear Air Foot Duct Sensor Circuit on Front Passenger Side


DESCRIPTION

  1. 1: for LHD
  2. 2: for RHD
The cooler thermistor (duct sensor RH*1 or LH*2) detects the duct temperature and sends the appropriate signals to the air conditioning amplifier assembly.

DTC Code
DTC Detection Condition
Trouble Area
B1429/29
An open or short in the air duct temperature sensor RH*1 or LH*2 circuit.
  1. Cooler thermistor (duct sensor RH)*1
  2. Cooler thermistor (duct sensor LH)*2
  3. Harness or connector
  4. Air conditioning amplifier assembly

WIRING DIAGRAM


for LHD:

Land Cruiser. Urj200, 202 Grj200 Vdj200.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System). Dtc B1429/29 Rear Air Foot Duct Sensor Circuit On Front Passenger Side


for RHD:

Land Cruiser. Urj200, 202 Grj200 Vdj200.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System). Dtc B1429/29 Rear Air Foot Duct Sensor Circuit On Front Passenger Side


INSPECTION PROCEDURE

1.READ VALUE USING GTS (FOOT DUCT SENSOR [REAR P])
  1. *1: for LHD
  2. *2: for RHD

  1. Use the Data List to check if the cooler thermistor (duct temperature sensor RH*1 or LH*2) is functioning properly (Click here).

    Air Conditioner
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Foot Duct Sensor (Rear P)
    		Cooler thermistor (duct sensor RH*1 or LH*2) / Min.: -12.7°C (9.14°F), Max.: 76.55°C (169.79°F)
    		Actual cooler thermistor (duct sensor RH*1 or LH*2) displayed
    		Cooler thermistor (duct sensor RH*1 or LH*2) system malfunction:
    1. Open in the circuit: -12.7°C (9.14°F)
    2. Short in the circuit: 76.55°C (169.79°F)
    OK:
    The display is as specified in the normal condition.
    Result
    Result
    		Proceed to
    OK (When troubleshooting according to the DTC)
    		A
    OK (When troubleshooting according to Problem Symptoms Table)
    		B
    NG
    		C


B
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)

C
Go to step 2
A

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (Click here)

2.INSPECT COOLER THERMISTOR (DUCT SENSOR)
  1. *1: for LHD
  2. *2: for RHD

  1. Remove the cooler thermistor (duct sensor RH*1 or LH*2) (Click here).

  1. Inspect the the cooler thermistor (duct sensor RH*1 or LH*2) (Click here).



NG
REPLACE COOLER THERMISTOR (DUCT SENSOR) (Click here)
OK


3.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - COOLER THERMISTOR [DUCT SENSOR])

  1. Disconnect the E35 air conditioning amplifier assembly connector.

  1. for LHD:

    1. Disconnect the L12 cooler thermistor (duct sensor RH) connector.

  1. for RHD:

    1. Disconnect the K21 cooler thermistor (duct sensor LH) connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    for LHD::
    Tester Connection
    		Condition
    		Specified Condition
    E35-17 (RHTR) - L12-1
    		Always
    		Below 1 Ω
    E35-31 (SGND) - L12-2 (-)
    		Always
    		Below 1 Ω
    L12-1 - L12-2
    		Always
    		10 kΩ or higher
    E35-17 (RHTR) or L12-1 - Body ground
    		Always
    		10 kΩ or higher
    E35-31 (SGND) or L12-2 - Body ground
    		Always
    		10 kΩ or higher
    for RHD::
    Tester Connection
    		Condition
    		Specified Condition
    E35-18 (RHTL) - K21-1
    		Always
    		Below 1 Ω
    E35-31 (SGND) - K21-2
    		Always
    		Below 1 Ω
    K21-1 - K21-2
    		Always
    		10 kΩ or higher
    E35-18 (RHTL) or K21-1 - Body ground
    		Always
    		10 kΩ or higher
    E35-31 (SGND) or K21-2 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (Click here)