Toyota Tundra. Manual — part 2399

B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE (See PROBLEM SYMPTOMS TABLE )

C: REPLACE AIR CONDITIONING AMPLIFIER (See REMOVAL )

A: Go to Next Step

2. CHECK HARNESS AND CONNECTOR (SOLAR SENSOR)

a. Disconnect the K19 solar sensor connector.

Fig. 39: Identifying Terminals Of K19 Solar Sensor Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

c. Measure the voltage according to the value(s) in the table below.

Standard Voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Result

Proceed to

NG

A

OK (Checking from the PROBLEM SYMPTOMS TABLE)

B

OK (Checking from the DTC)

C

Tester Connection

Condition Specified Condition

K19-3 (CLTE) -Body ground Always

Below 1 ohms

Tester Connection

Switch Condition Specified Condition

K19-6 (CLTB) - K19-3 (CLTE)

Ignition switch ON

11 to 14 V

Ignition switch OFF

Below 1 V

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra

NG: Go to step 5

OK: Go to Next Step

3. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - SOLAR

SENSOR)

a. Disconnect the J19 air conditioning amplifier connector.

Fig. 40: Identifying Terminals Of J19 Air Conditioning Amplifier Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Disconnect the K19 solar sensor connector.

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection

Condition Specified Condition

J19-32 (TSP) - K19-2 (TSR)

Always

Below 1 ohms

J19-32 (TSP) or K19-2 (TSR) - Body ground Always

10 kohms or higher

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

4. CHECK AUTOMATIC LIGHT CONTROL SENSOR (SOLAR SENSOR (TSR - CLTE

VOLTAGE))

a. Remove the solar sensor with its connector still connected (see REMOVAL ).

Fig. 41: Identifying Terminals Of K19 Solar Sensor Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Apply battery voltage between terminals 6 (CLTB) and 3 (CLTE) of the solar sensor.

c. Measure the voltage according to the value(s) in the table below.

Standard Voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

HINT:



As the inspection light is moved away from the sensor, the voltage decreases.



Use an incandescent light for inspection. Bring it about 30 cm (11.8 in.) from the solar
sensor.

NG: REPLACE AUTOMATIC LIGHT CONTROL SENSOR (SOLAR SENSOR) (See
REMOVAL )

OK: REPLACE AIR CONDITIONING AMPLIFIER (See REMOVAL )

Tester Connection

Condition

Specified Condition

2 (TSR) - 3 (CLTE)

Sensor is subjected to electric light

0.8 to 4.3 V

Sensor is covered with a cloth

Below 0.8 V

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra

5. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SOLAR SENSOR AND BODY

GROUND)

a. Disconnect the J3 ECU connector.

b. Disconnect the K19 solar sensor connector.

Fig. 42: Identifying Terminals Of K19 Solar Sensor Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE MAIN BODY ECU

DTC B1422/22 COMPRESSOR LOCK SENSOR CIRCUIT

DESCRIPTION

Tester Connection

Condition Specified Condition

J3-18 (CLTE) - K19-3 (CLTE)

Always

Below 1 ohms

J3-20 (CLTB) - K19-6 (CLTB)

J3-18 (CLTE) or K19-3 (CLTE) - Body ground

Always

10 kohms or higher

J3-20 (CLTB) or K19-6 (CLTB) - Body ground

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra