Tacoma

Toyota Tacoma 2015-2018 Air Conditioning Workshop Manual

A
(a) Recheck for DTCs when the following conditions are satisfied.
ITEM CONDITION
Vehicle Doors Fully open
Temperature Setting MAX COLD
Blower Speed HI
A/C Switch On
R/F Switch Recirculation
Interior Temperature 25 to 35°C (77 to 95°F)
Engine Speed 2000 rpm
NOTICE:
I
f refrigerant pressure on the high pressure side becomes high, the DTC will be set. It is necessary to
measure the voltage for a certain amount of time (approximately 10 minutes) because the DTC may be set
after the air conditioning operates for a while.
HINT:
When the outside air temperature is low (below -1.5°C (29.3°F)), the compressor stops due to operation of
the ambient temperature sensor and the evaporator temperature sensor to prevent the evaporator from
freezing. In this case, perform the inspection in a warm indoor environment.
If refrigerant is added and the system has not been properly evacuated (insufficient vacuum time),
moisture in the air remaining in the system will freeze in the cooler expansion valve, blocking the flow on
the high pressure side. Therefore, in order to confirm the problem, recover the refrigerant and properly
evacuate the system. Add an appropriate amount of refrigerant, and check for the DTC. If the DTC is not
output after this work, it indicates that the cooler dryer in the cooler condenser assembly is not able to
absorb moisture in the refrigerant cycle. It is necessary to replace the cooler dryer in order to complete the
repair.
RESULT PROCEED TO
DTC B1423/23 is output A
DTC B1423/23 is not output B
B
REPLACE COOLER CONDENSER ASSEMBLY
16. REPLACE COOLER EXPANSION VALVE
(a) Replace the cooler expansion valve with a new one .
HINT:
Replace the cooler expansion valve with a new one because the cooler expansion valve is either stuck or
clogged.
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