Toyota Tacoma (2015-2018) Service Manual: Data List / Active Test

Toyota Tacoma (2015-2018) Service Manual / Air Conditioning / Air Conditioning System(for Manual Air Conditioning System) / Data List / Active Test

DATA LIST / ACTIVE TEST

1. 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.

NOTICE:

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) Connect the Techstream to the DLC3.

(b) Turn the ignition switch ON.

(d) Enter the following menus: Body Electrical / Air Conditioner / Data List.

(e) Check the value(s) by referring to the table below.

Air Conditioner

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Ambient Temp Sensor	Ambient temperature sensor / Min.: -23.30°C (-9.94°F) Max.: 65.95°C (150.71°F)	Actual ambient temperature displayed	-
Adjusted Ambient Temp	Adjusted ambient temperature / Min.: -30.80°C (-23.44°F) Max.: 50.80°C (123.44°F)	-	-
Evaporator Fin Thermistor	Cooler thermistor sensor (evaporator temperature sensor) / Min.: -29.70°C (-21.46°F) Max.: 59.55°C (139.19°F)	Actual evaporator temperature displayed	-
Evaporator Target Temp	Evaporator target temperature / Min.: -327.68°C (-557.82°F) Max.: 327.67°C (621.81°F)	Evaporator target temperature displayed	-
Engine Coolant Temp	Engine coolant temperature sensor / Min.: 1.30°C (34.34°F) Max.: 90.55°C (194.99°F)	Actual engine coolant temperature displayed	-
Regulator Pressure Sensor	Air conditioner pressure sensor / Min.: -66.22 psi (gauge) Max.: 477.68 psi (gauge)	Actual pressure is displayed	-
Electric Heater Count*1	Maximum heater operation level / Min.: 0 Max.: 3	Maximum possible operation level of quick heater assembly (PTC heater) displayed	-
Electric Heater Active Level*1	Actual heater operation level / Min.: 0 Max.: 3	Actual operation level of quick heater assembly (PTC heater) displayed	-
Refrigerant Gas Type	Refrigerant gas type / R134a or 1234yf	Refrigerant gas type displayed	-
Number of Trouble Codes	Number of trouble codes / Min.: 0 Max.: 255	Number of DTCs displayed	-

*1: w/ PTC Heater

2. ACTIVE TEST

Using the Techstream to perform Active Tests allows relays, VSVs, 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.

(d) Enter the following menus: Body Electrical / Air Conditioner / Active Test.

(e) Check the operation by referring to the table below.

Air Conditioner

Tester Display	Test Part	Control Range	Diagnostic Note
Magnetic Clutch Relay	Air conditioning system operation	OFF, ON	-
Mirror Heater Relay	Mirror heater	OFF, ON	-
Electrical Fan	Electrical Fan	OFF, ON	-
Heater Active Level*1	Quick heater assembly	Min.: 0, Max.: 3	-

*1: w/ PTC Heater

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