Dtc B1424/24 Solar Sensor Circuit (Driver Side)

Heater & Air Conditioning System. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
Air Conditioning. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (SOLAR SENSOR D SIDE)

INSPECT SOLAR SENSOR

CHECK WIRE HARNESS (SOLAR SENSOR - AIR CONDITIONING AMPLIFIER)

DTC B1424/24 Solar Sensor Circuit (Driver Side)


DESCRIPTION

The solar sensor, which is installed on the upper side of the instrument panel, detects sunlight and controls the air conditioning AUTO mode. The output voltage from the solar sensor varies in accordance with the amount of sunlight. When the sunlight increases, the output voltage increases. As the sunlight decreases, the output voltage decreases.
The air conditioning amplifier detects changes in the output voltage from the solar sensor.

DTC No.
DTC Detection Condition
Trouble Area
B1424/24
Open or short in passenger side solar sensor circuit
  1. Solar sensor
  2. Harness and connector between solar sensor and air conditioning amplifier
  3. Air conditioning amplifier

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System). Dtc B1424/24 Solar Sensor Circuit (Driver Side)


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER (SOLAR SENSOR D SIDE)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the intelligent tester main switch ON.

  1. Select the item below in the Data List, and read the value displayed on the intelligent tester.

    Air conditioning amplifier:

    Item
    		Measure Item / Display
    (Range)
    		Normal Condition
    		Diagnostic Note
    Solar Sens-D
    		Driver side solar sensor /
    Min.: 0, Max.: 255
    		Driver side temperature increases as brightness increases
    		-
    OK:
    The display is as specified in the normal condition column.

    Result::

    Result
    		Proceed to
    NG
    		A
    OK (Checking from the PROBLEM SYMPTOMS TABLE)
    		B
    OK (Checking from the DTC)
    		C


B
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

C
REPLACE AIR CONDITIONING AMPLIFIER
A


2.INSPECT SOLAR SENSOR
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System). Dtc B1424/24 Solar Sensor Circuit (Driver Side)

  1. Remove the solar sensor.

  1. Measure the resistance of the sensor.

  1. Connect the positive (+) lead from the ohmmeter to terminal 1 and the negative (-) lead to terminal 3 of the solar sensor.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 (SS) - 3 (TSD)
    		Sensor exposed to electric light
    		Except ∞ Ω
    1 (SS) - 3 (TSD)
    		Sensor covered with cloth
    		∞ Ω (No continuity)
    NOTICE:
    The connection procedure for using a digital tester such as an electrical tester is shown above. When using an analog tester, connect the positive (+) lead to terminal 3 and the negative (-) lead to terminal 1 of the solar sensor.
    HINT:
    1. As the inspection light is moved away from the sensor, the voltage decreases.
    2. Use an incandescent light for the inspection. Position it about 30 cm (11.8 in.) from the solar sensor.


NG
REPLACE SOLAR SENSOR
OK


3.CHECK WIRE HARNESS (SOLAR SENSOR - AIR CONDITIONING AMPLIFIER)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System). Dtc B1424/24 Solar Sensor Circuit (Driver Side)

  1. Disconnect the F1 sensor connector.

  1. Disconnect the E41 amplifier connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    E41-33 (TSD) - F1-3 (TSD)
    		Below 1 Ω
    E41-31 (S5-4) - F1-1 (SS)
    		Below 1 Ω
    E41-33 (TSD) - Body ground
    		1 MΩ or higher
    E41-31 (S5-4) - Body ground
    		1 MΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE AIR CONDITIONING AMPLIFIER