Tacoma

Toyota Tacoma 2015-2018 Air Conditioning Workshop Manual

Last Modified: 11-13-2015 6.6 C Doc ID: RM000000STP0EPX
Model Year Start: 2016 Model: Tacoma Prod Date Range: [08/2015 - ]
Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air Conditioning System): B1423; Pressure
Sensor Circuit; 2016 MY Tacoma [08/2015 - ]
DTC B1423 Pressure Sensor Circuit
DESCRIPTION
This DTC is stored if refrigerant pressure on the high pressure side is extremely low (176 kPa (1.8 kgf/cm
2
, 26
psi) or less) or extremely high (3140 kPa (32.0 kgf/cm
2
, 455 psi) or more). The air conditioner pressure sensor,
which is installed on the pipe on the high pressure side to detect refrigerant pressure, sends a refrigerant
pressure signal to the air conditioning amplifier assembly. The air conditioning amplifier assembly converts this
signal to a pressure value according to the sensor characteristics and uses it to control the compressor.
DTC
NO.
DTC DETECTION CONDITION TROUBLE AREA
B1423
Open or short in air conditioning pressure sensor
circuit
Refrigerant pressure on the high pressure side is
extremely low (176 kPa (1.8 kgf/cm
2
, 26 psi) or
less) or extremely high (3140 kPa (32.0 kgf/cm
2
,
455 psi) or more).
Air conditioner pressure
sensor
Harness or connector
Air conditioning amplifier
assembly
Cooler expansion valve
(blocked, stuck)
Cooler condenser assembly
(blocked, deterioration of
cooling capacity due to dirt)
Cooler dryer (moisture in the
refrigerant cycle cannot be
absorbed)
Cooling fan system (cooler
condenser assembly cannot
be cooled down)
A/C system (leaks, blocked)
WIRING DIAGRAM
cardiagn.com

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