Tacoma

Toyota Tacoma 2015-2018 Air Conditioning Workshop Manual

TESTER DISPLAY MEASUREMENT ITEM/RANGE NORMAL CONDITION DIAGNOSTIC
NOTE
Max.: 477.68 psi (gauge)
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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