Air Conditioning System (For Automatic Air Conditioning System) Problem Symptoms Table

Air Conditioning System (For Automatic Air Conditioning System) -- Problem Symptoms Table


HINT:
  1. Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  2. Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Air conditioning system
Symptom
Suspected Area
See page
Entire A/C system does not operate
IG power source circuit
Toyota Fortuner RM000001DTE00FX.html
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html
Air flow control: No blower operation
Heater relay circuit
Toyota Fortuner RM000001DTG00FX.html
Blower motor circuit
Toyota Fortuner RM000001DTI00PX.html
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html
Air flow control: No blower control
Blower motor circuit
Toyota Fortuner RM000001DTI00PX.html
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html
Air flow control: Insufficient air output
Blower motor circuit
Toyota Fortuner RM000001DTI00PX.html
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html
Temperature control: No cool air comes out
Volume of refrigerant
Toyota Fortuner RM000000VTE00GX.html
Refrigerant pressure
Toyota Fortuner RM000000VTF00GX.html
Compressor circuit
Toyota Fortuner RM000001DTH00FX.html
Pressure switch circuit
Toyota Fortuner RM000001DTB00FX.html
Evaporator temperature sensor circuit
Toyota Fortuner RM000001DTA00GX.html
Air mix damper control servo motor circuit
Toyota Fortuner RM000001LZM008X.html
Room temperature sensor circuit
Toyota Fortuner RM000001DT800FX.html
Ambient temperature sensor circuit
Toyota Fortuner RM000001DT900FX.html
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html
Temperature control: No warm air comes out
Air mix damper control servo motor circuit
Toyota Fortuner RM000001LZM008X.html
Ambient temperature sensor circuit
Toyota Fortuner RM000001DT900FX.html
Room temperature sensor circuit
Toyota Fortuner RM000001DT800FX.html
Evaporator temperature sensor circuit
Toyota Fortuner RM000001DTA00GX.html
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html
Temperature control: Output air is warmer or cooler than set temperature or response is slow
Room temperature sensor circuit
Toyota Fortuner RM000001DT800FX.html
Ambient temperature sensor circuit
Toyota Fortuner RM000001DT900FX.html
Vehicle speed signal circuit
Toyota Fortuner RM000001DTJ00FX.html
Solar sensor circuit
Toyota Fortuner RM000001DTK00FX.html
Air mix damper control servo motor circuit
Toyota Fortuner RM000001LZM008X.html
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html
Temperature control: No temperature control (only Max. cool or only Max. warm)
Air mix damper control servo motor circuit
Toyota Fortuner RM000001LZM008X.html
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html
No air inlet control
Air inlet damper control servo motor circuit
Toyota Fortuner RM000001DTC00FX.html
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html
No air outlet control
Air outlet damper control servo motor circuit
Toyota Fortuner RM000001DTD00FX.html
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html
Engine idle up does not occur, or is continuous
Compressor circuit
Toyota Fortuner RM000001DTH00FX.html
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html
Displayed set temperature value does not match operation of temperature control switch
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html
Illumination is not ON when light control switch is set to TAIL or HEAD position
Headlight dimmer switch assembly
Toyota Fortuner RM0000014MA002X.html
Harness or connector
-
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html
Unable to access diagnosis mode
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html
DTC(s) are not recorded (set mode is cleared when ignition switch is turned OFF)
Back-up power source circuit
Toyota Fortuner RM000001DTF00FX.html
Air conditioning amplifier assembly
Toyota Fortuner RM000003PPY001X.html

Rear cooler
Symptom
Suspected Area
See page
Air Flow Control: No blower operation
Rear cooler relay
Toyota Fortuner RM000001JR300QX.html
Cooler blower motor sub-assembly
Toyota Fortuner RM000001JR200LX.html
Cooler control switch assembly
Toyota Fortuner RM00000249L007X.html
Harness or connector
-
Air Flow Control: No blower control
Cooler blower motor sub-assembly
Toyota Fortuner RM000001JR200LX.html
Blower (rear) resistor
Toyota Fortuner RM000001JR300QX.html
Cooler control switch assembly
Toyota Fortuner RM00000249L007X.html
Harness or connector
-
Temperature Control: No cool air comes out
Volume of refrigerant
Toyota Fortuner RM000000VTE00GX.html
Drive belt (for 1GR-FE)
Toyota Fortuner RM000000YN4003X.html
Drive belt (for 1KD-FTV)
Toyota Fortuner RM000001X4V000X.html
Refrigerant pressure
Toyota Fortuner RM000000VTF00GX.html
Cooler compressor assembly (for 1GR-FE)
Toyota Fortuner RM0000012JZ00TX.html
Cooler compressor assembly (for 1KD-FTV)
Toyota Fortuner RM0000012JZ00QX.html
Cooler control switch assembly
Toyota Fortuner RM00000249L007X.html
Harness or connector
-