Toyota Tundra. Manual — part 2390

RESULT REFERENCE

B: GO TO CAN COMMUNICATION SYSTEM (See PRECAUTION )

A: Go to Next Step

4. CHECK FOR DTC*

a. Check for DTCs and note any codes that are output (see DTC CHECK/CLEAR ).

b. Clear the DTC (see DTC CHECK/CLEAR ).

c. Recheck for DTCs. Based on the DTCs output above, try to force output of the air conditioning

system DTC by simulating the operation indicated by the DTC.

Result

RESULT REFERENCE

B: GO TO STEP 7

A: Go to Next Step

5. PROBLEM SYMPTOMS TABLE

a. Refer to the PROBLEM SYMPTOMS TABLE .

Result

RESULT REFERENCE

B: GO TO STEP 7

A: Go to Next Step

6. OVERALL ANALYSIS AND TROUBLESHOOTING*

a. Actuator Check (see ACTUATOR CHECK )

b. DATA LIST/ACTIVE TEST (see DATA LIST/ACTIVE TEST )

c. Terminals of ECU (see TERMINALS OF ECU )

Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B

Result

Proceed to

DTC is not output

A

DTC is output

B

Result

Proceed to

Fault is not listed in problem symptoms table

A

Fault is listed in problem symptoms table

B

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra

d. On-vehicle Inspection

e. Inspection

7. ADJUST, REPAIR OR REPLACE

NEXT: END

CUSTOMIZE PARAMETERS

1. CUSTOMIZING FUNCTION WITH TECHSTREAM

a. Connect the Techstream to the DLC3.

b. Turn the ignition switch ON.

c. Turn the Techstream on.

d. Enter the following menus: Customize Setting.

e. Select the setting by referring to the table below.

Air Conditioner

CUSTOMIZE PARAMETERS - AIR CONDITIONER

NOTE:



When the customer requests a change in a function, first make sure
that the function can be customized.



Be sure to make a note of the current settings before customizing.



When troubleshooting a function, first make sure that the function is
set to the default setting.

Display

Default

Contents

Setting

Set Temperature

Shift

Normal

Function to control the shifted temperature
in relation to the displayed temperature

+2 C/+1 C/Normal/-1

C/-2 C

Air Inlet Mode

Automatic

In case of turning the A/C ON to cool
down the cabin quickly, this is the function
to change the mode automatically to
RECIRCULATION mode

Manual/Automatic

Compressor Mode Automatic

Function to turn the A/C ON automatically
by pressing the AUTO button when the
blower is ON and the A/C is OFF

Manual/Automatic

Compressor/Air

Inlet DEF Operation

Link

Function to turn the A/C ON automatically
linked with the FRONT DEF button when
A/C is OFF

Normal/Link

Foot/DEF Auto

Mode

ON

Function to turn the airflow from
FOOT/DEF ON automatically when
AUTO MODE is ON

OFF/ON

Foot/DEF

Automatic Blow Up

ON

Function to change the blower level
automatically when the defroster is ON

OFF/ON

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms
are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking
the suspected areas in the order they are listed. Replace parts as necessary.

Air conditioning system

PROBLEM SYMPTOMS CHART

Function

Ambient

Temperature Shift

Normal

Function to control the shifted ambient
temperature in relation to the displayed
ambient temperature

+3 C/+2 C/+1
C/Normal/-1 C/-2 C/-
3 C

Symptom

Suspected Area

Refer To

All functions of the A/C system
do not operate

IG power source circuit

IG POWER SOURCE CIRCUIT

LIN communication system

HOW TO PROCEED WITH

TROUBLESHOOTING

Integration control and panel (for
Column Shift Type)

INTEGRATION CONTROL

AND PANEL (FOR COLUMN

SHIFT TYPE)

Integration control and panel (for
Floor Shift Type)

INTEGRATION CONTROL

AND PANEL (FOR FLOOR

SHIFT TYPE)

Air conditioning amplifier

AIR CONDITIONING

AMPLIFIER

Air Flow Control: No blower
operation

Blower motor circuit

BLOWER MOTOR CIRCUIT

LIN communication system

HOW TO PROCEED WITH

TROUBLESHOOTING

Integration control and panel (for
Column Shift Type)

INTEGRATION CONTROL

AND PANEL (FOR COLUMN

SHIFT TYPE)

Integration control and panel (for
Floor Shift Type)

INTEGRATION CONTROL

AND PANEL (FOR FLOOR

SHIFT TYPE)

Air conditioning amplifier

AIR CONDITIONING

AMPLIFIER

Air Flow Control: No blower

Blower motor circuit

BLOWER MOTOR CIRCUIT

LIN communication system

HOW TO PROCEED WITH

TROUBLESHOOTING

Integration control and panel (for
Column Shift Type)

INTEGRATION CONTROL

AND PANEL (FOR COLUMN

SHIFT TYPE)

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra

control

Integration control and panel (for
Floor Shift Type)

INTEGRATION CONTROL

AND PANEL (FOR FLOOR

SHIFT TYPE)

Air conditioning amplifier

AIR CONDITIONING

AMPLIFIER

Air Flow Control: Insufficient air
flow

Blower motor circuit

BLOWER MOTOR CIRCUIT

Air conditioning amplifier

AIR CONDITIONING

AMPLIFIER

Temperature Control: No cool air
comes out

Refrigerant volume

REFRIGERANT

Refrigerant pressure

REFRIGERANT

Pressure switch circuit

DTC B1423/23 PRESSURE

SENSOR CIRCUIT

Air conditioning compressor
magnetic clutch circuit

AIR CONDITIONING

COMPRESSOR MAGNETIC

CLUTCH CIRCUIT

Compressor lock sensor circuit

DTC B1422/22 COMPRESSOR

LOCK SENSOR CIRCUIT

Air mix damper control servo
motor circuit (for Driver Side)

DTC B1446/46 AIR MIX

DAMPER CONTROL SERVO

MOTOR CIRCUIT (DRIVER

SIDE)

Air mix damper control servo
motor circuit (for Passenger Side)

DTC B1441/41 AIR MIX

DAMPER CONTROL SERVO

MOTOR CIRCUIT

(PASSENGER SIDE)

Evaporator temperature sensor
circuit

DTC B1413/13 EVAPORATOR

TEMPERATURE SENSOR

CIRCUIT

Room temperature sensor circuit

DTC B1411/11 ROOM

TEMPERATURE SENSOR

CIRCUIT

Ambient temperature sensor
circuit

DTC B1412/12 AMBIENT

TEMPERATURE SENSOR

CIRCUIT

LIN communication system

HOW TO PROCEED WITH

TROUBLESHOOTING

Expansion valve

AIR CONDITIONING UNIT

Integration control and panel (for
Column Shift Type)

INTEGRATION CONTROL

AND PANEL (FOR COLUMN

SHIFT TYPE)

Integration control and panel (for
Floor Shift Type)

INTEGRATION CONTROL

AND PANEL (FOR FLOOR

SHIFT TYPE)

Air conditioning amplifier

AIR CONDITIONING

AMPLIFIER

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra