Toyota Tundra (2015 year). Manual - part 2250

STEP

NO.

DISPLAY

CODE

CONDITION

BLOWER

LEVEL

AIR MIX

DAMPER

AIRFLOW

VENT

AIR INLET DAMPER

COMPRESSOR

5

4

17

50% open

B/L

RECIRCULATION

ON

6

5

17

50% open

B/L

RECIRCULATION

ON

7

6

17

50% open

FOOT

FRESH

ON

8

7

17

100% open

FOOT-0

FRESH

ON

9

8

17

100% open

F/D

FRESH

ON

10

9

31

100% open

DEF

FRESH

ON

AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...

Last Modified: 9-16-2014

6.6 C

Doc ID: RM000002VXB00MX

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 -           ]

Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System): B1411/11;

Room Temperature Sensor Circuit; 2015 MY Tundra [08/2014 -        ]

DTC

B1411/11 Room Temperature Sensor Circuit

DESCRIPTION

The room temperature sensor is installed in the instrument panel to detect the room temperature and control the

increases, the resistance decreases.

The air conditioning amplifier applies voltage (5 V) to the room temperature sensor and reads voltage changes as

DTC

CODE

DTC DETECTION CONDITION

TROUBLE AREA

B1411/11

Open or short in room

temperature sensor circuit

Room temperature sensor

Harness or connector between room temperature

sensor and air conditioning amplifier

Air conditioning amplifier

WIRING DIAGRAM

INSPECTION PROCEDURE

AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...

A

PROCEDURE

1.

READ VALUE USING TECHSTREAM (ROOM TEMPERATURE SENSOR)

(a) Use the Data List to check if the room temperature sensor is functioning properly.

Air Conditioner

TESTER DISPLAY

MEASUREMENT ITEM /

RANGE

NORMAL CONDITION

DIAGNOSTIC NOTE

Room Temperature

Sensor

Room temperature

sensor /

Min.: -6.5°C (20.3°F)

Max.: 57.25°C

(135.05°F)

Actual room temperature is

displayed

Open in circuit: -6.5°C

(20.3°F)

Short in circuit: 57.25°C

(135.05°F)

OK:

The display is as specified in the normal condition.

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

2.

INSPECT ROOM TEMPERATURE SENSOR

AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...

OK

(a) Remove the room temperature sensor 

 

.

(b) Measure the resistance according to the value(s) in the

table below.

Standard resistance:

TESTER CONNECTION

CONDITION

SPECIFIED CONDITION

1 - 2

10°C (50°F)

3.00 to 3.73 kΩ

15°C (59°F)

2.45 to 2.88 kΩ

20°C (68°F)

1.95 to 2.30 kΩ

25°C (77°F)

1.60 to 1.80 kΩ

30°C (86°F)

1.28 to 1.47 kΩ

35°C (95°F)

1.00 to 1.22 kΩ

40°C (104°F)

0.80 to 1.00 kΩ

45°C (113°F)

0.65 to 0.85 kΩ

50°C (122°F)

0.50 to 0.70 kΩ

55°C (131°F)

0.44 to 0.60 kΩ

60°C (140°F)

0.36 to 0.50 kΩ

NOTICE:

As the temperature increases, the resistance decreases (see the

graph).

NG

REPLACE ROOM TEMPERATURE SENSOR

3.

CHECK HARNESS AND CONNECTOR (ROOM TEMPERATURE SENSOR - AIR
CONDITIONING AMPLIFIER)

AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...