1. READ DATA LIST
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful because intermittent conditions or signals may be
discovered before parts or wiring is disturbed. Reading the Data List information
early in troubleshooting is one way to save diagnostic time.
In the table below, the values listed under "Normal Condition" are reference
values. Do not depend solely on these reference values when deciding whether a part
is faulty or not.
(a) Warm up the engine.
(b) Turn the ignition switch OFF.
(c) Connect the Techstream to the DLC3.
(d) Turn the ignition switch ON.
(e) Turn the Techstream on.
(g) According to the display on the Techstream, read the "Data List".
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)
|
|
Ambient Temp Sensor
|
Ambient temperature sensor /
Min.: -23.3°C (-9.94°F)
Max.: 65.95°C (150.71°F)
|
Actual ambient temperature is displayed
|
Open in circuit: -23.3°C (-9.94°F)
Short in circuit: 65.95°C (150.71°F)
|
|
Adjusted Ambient Temp
|
Adjusted ambient temperature /
Min.: -30.8°C (-23.44°F)
Max.: 50.8°C (123.44°F)
|
Adjusted ambient temperature is displayed
|
-
|
|
Evaporator Fin Thermistor
|
No. 1 cooler thermistor /
Min.: -29.7°C (-21.46°F)
Max.: 59.55°C (139.19°F)
|
Actual No. 1 cooler thermistor is displayed
|
Open in circuit: -29.7°C (-21.46°F)
Short in circuit: 59.55°C (139.19°F)
|
|
Solar Sensor (D Side)
|
Driver side solar sensor /
Min.: 0, Max.: 255
|
Driver side solar sensor voltage increases as brightness increases
|
Open in circuit: 0
Short in circuit: 255
|
|
Solar Sensor (P Side)
|
Passenger side solar sensor /
Min.: 0, Max.: 255
|
Passenger side solar sensor voltage increases as brightness increases
|
Open in circuit: 0
Short in circuit: 255
|
|
Engine Coolant Temp
|
Engine coolant temperature /
Min.: 1.3°C (34.34°F)
Max.: 90.55°C (194.99°F)
|
Actual engine coolant temperature is displayed while engine is warmed
up
|
-
|
|
Set Temperature (D Side)
|
Driver side set temperature /
Min.: 17.5°C (63.5°F)
Max.: 32.5°C (90.5°F)
|
Driver side actual set temperature is displayed
|
-
|
|
Set Temperature (P Side)
|
Passenger side set temperature /
Min.: 17.5°C (63.5°F)
Max.: 32.5°C (90.5°F)
|
Passenger side actual set temperature is displayed
|
-
|
|
Blower Motor Speed Level
|
Blower motor speed level /
Min.: 0 level,
Max.: 31 level
|
Increases in range between 0 and 31 as blower motor speed increases
|
-
|
|
Air Mix Servo Targ Pulse (D)
|
Driver side air mix servo motor target pulse /
Min.: 0, Max.: 255
|
MAX. COLD: 5 (pulse)
MAX. HOT: 104 (pulse)
|
-
|
|
Air Mix Servo Targ Pulse (P)
|
Passenger side air mix servo motor target pulse /
Min.: 0, Max.: 255
|
MAX. COLD: 105 (pulse)
MAX. HOT: 6 (pulse)
|
-
|
|
Air Outlet Servo Pulse (D)
|
Driver side air outlet servo motor target pulse /
Min.: 0, Max.: 255
|
FACE: 9 (pulse)
B/L: 32 (pulse)
FOOT: 56 (pulse)
FOOT/DEF: 83 (pulse)
DEF: 97 (pulse)
|
-
|
|
Air Inlet Damper Targ Pulse
|
Air inlet damper target pulse /
Min.: 0, Max.: 255
|
REC: 7
FRS: 28
|
-
|
|
Cool Air Bypass Pulse
|
Cool air bypass servo motor target pulse /
Min.: 0, Max.: 255
|
Open: 8 (pulse)
Close: 50 (pulse)
|
-
|
|
Shift Set Temperature
|
Shift set temperature / 2C incr, 1C incr, Normal, 1C decr or 2C decr
|
Customized value will be displayed
|
-
|
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Air Inlet Mode
|
Air inlet mode / Auto, Manual
|
Customized value will be displayed
|
-
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Compressor Mode
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Compressor mode / Auto, Manual
|
Customized value will be displayed
|
-
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Compressor/DEF Mode
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Compressor/DEF mode / Link, Normal
|
Customized value will be displayed
|
-
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Add Foot Air in FACE Mode
|
Add Foot air in FACE mode / ON, OFF
|
Customized value will be displayed
|
-
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Foot/DEF Auto Mode
|
FOOT/DEF auto mode / ON, OFF
|
Customized value will be displayed
|
-
|
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Foot/DEF Auto Blow Up
|
FOOT/DEF auto blower up function / ON, OFF
|
Customized value will be displayed
|
-
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|
Ambient Temperature Shift
|
Ambient temperature shift / 3C incr, 2C incr, 1C incr, Normal, 1C decr,
2C decr or 3C decr
|
Customized value will be displayed
|
-
|
|
Number of Trouble Codes
|
Number of trouble codes /
Min.: 0, Max.: 255
|
Number of DTCs will be displayed
|
-
|
Engine and ECT
2. PERFORM ACTIVE TEST
Using the Techstream to perform the Active Tests allows relays, VSVs and actuators
and other items to be operated without removing any parts. This non-intrusive functional
inspection can be very useful because intermittent operation may be discovered before
parts or wiring is disturbed. Performing Active Tests early in troubleshooting is
one way to save diagnostic time. Data List information can be displayed while performing
Active Tests.
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Air Conditioner / Active Test.
(e) According to the display on the Techstream, perform the "Active Test".
Air Conditioner
