Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: 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.

(c) Turn the Techstream 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.: -23.30В°C (-9.94В°F)

Max.: 65.95В°C (150.71В°F)

Actual ambient temperature displayed

-

Adjusted Ambient Temp

Adjusted ambient temperature /

Min.: -30.80В°C (-23.44В°F)

Max.: 50.80В°C (123.44В°F)

-

-

Evaporator Fin Thermistor

Cooler thermistor sensor (evaporator temperature sensor) /

Min.: -29.70В°C (-21.46В°F)

Max.: 59.55В°C (139.19В°F)

Actual evaporator temperature displayed

-

Evaporator Target Temp

Evaporator target temperature /

Min.: -327.68В°C (-557.82В°F)

Max.: 327.67В°C (621.81В°F)

Evaporator target temperature displayed

-

Engine Coolant Temp

Engine coolant temperature sensor /

Min.: 1.30В°C (34.34В°F)

Max.: 90.55В°C (194.99В°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.

(c) Turn the Techstream 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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