PROBLEM SYMPTOMS TABLE
HINT:
Symptom |
Suspected Area |
See page |
---|---|---|
No Cool Air Comes Out: |
Volume of refrigerant |
- |
Air conditioner pressure sensor circuit |
|
|
Air conditioning compressor magnetic clutch circuit |
|
|
Compressor lock sensor circuit |
|
|
Evaporator temperature sensor circuit |
|
|
Air conditioner amplifier assembly |
|
|
Wire harness or connector |
- |
|
No Cool Air Comes Out: |
Blower resistor |
|
Blower motor with fan sub-assembly |
|
|
Air conditioning control assembly |
|
|
Wire harness or connector |
- |
|
No Cool Air Comes Out: |
No. 2 air conditioning radiator damper servo sub-assembly (for air mix) |
|
Air conditioning control assembly |
|
|
Wire harness or connector |
- |
|
No Cool Air Comes Out: |
Volume of refrigerant |
- |
Blower motor performance check |
- |
|
Air mix damper servo full travel check |
- |
|
Recirculation damper servo operation check |
- |
|
No Engine Idle-up when A/C Switch ON |
Air conditioner amplifier assembly |
|
SFI system (2TR-FE) |
|
|
SFI system (2GR-FKS) |
|
|
Wire harness or connector |
- |
|
No Warm Air Comes Out: |
Blower resistor |
|
Blower motor with fan sub-assembly |
|
|
Air conditioning control assembly |
|
|
Wire harness or connector |
- |
|
No Warm Air Comes Out: |
No. 2 air conditioning radiator damper servo sub-assembly (for air mix) |
|
PTC heater circuit*1 |
|
|
Air conditioning control assembly |
|
|
Wire harness or connector |
- |
|
No Warm Air Comes Out: |
Volume of engine coolant |
- |
Air conditioning control assembly |
|
|
Blower motor performance check |
- |
|
Air mix damper servo full travel check |
- |
|
Recirculation damper servo operation check |
- |
|
Heater radiator |
- |
|
Air Not Coming From Desired Outlets: |
Blower resistor |
|
Blower motor with fan sub-assembly |
|
|
Air conditioning control assembly |
|
|
Wire harness or connector |
- |
|
Air Not Coming From Desired Outlets: |
No. 2 air conditioning radiator damper servo sub-assembly (for air mix) |
|
Air conditioning control assembly |
|
|
Wire harness or connector |
- |
|
Windshield Fogging: |
Volume of refrigerant |
- |
Air conditioner pressure sensor circuit |
|
|
Air conditioning compressor magnetic clutch circuit |
|
|
Compressor lock sensor circuit |
|
|
Evaporator temperature sensor circuit |
|
|
Air conditioner amplifier assembly |
|
|
Wire harness or connector |
- |
|
Windshield Fogging: |
Blower resistor |
|
Blower motor with fan sub-assembly |
|
|
Air conditioning control assembly |
|
|
Wire harness or connector |
- |
|
Windshield Fogging: |
No. 2 air conditioning radiator damper servo sub-assembly (for air mix) |
|
Air conditioning control assembly |
|
|
Wire harness or connector |
- |
|
Windshield Fogging: |
Volume of refrigerant |
- |
Blower motor performance check |
- |
|
Air mix damper servo full travel check |
- |
|
Recirculation damper servo operation check |
- |
|
Defrosting Insufficient: |
Blower motor with fan sub-assembly |
|
Mode doors: Check cooling, heating & door operation |
- |
|
Mode control servo motor: Hot air not coming, Go to no hot air comes out |
- |
|
Mode control servo motor: Cold air not coming, Go to no cold air comes out |
- |
|
Noise: |
Blower motor: Inspect blower motor for debris/cracks |
- |
Fresh air intake area: Inspect fresh air intake area for debris |
- |
|
Noise: |
Cooler compressor: Cooler compressor incorrectly fitted |
- |
Air conditioning compressor magnetic clutch circuit |
|
|
Refrigerant charge amount |
- |
|
Compressor mounting bracket: Compressor mounting bracket incorrectly fitted |
- |
|
A/C lines secure & not grounded |
- |
|
Odor (Cycle through blower speed, mode, temperature to define odor type when engine is running and A/C switch is ON. (Musty smell, coolant oil smell)) |
Wet carpet: Inspect water, engine coolant or oil leaks |
- |
A/C drain tube: Inspect water, engine coolant or oil leaks |
- |
|
Fresh air intake area: Inspect water, engine coolant or oil leaks |
- |
|
Heater hose: Inspect water, engine coolant or oil leaks |
- |
|
Evaporator: Inspect water, engine coolant or oil leaks |
- |
|
Evapo case: Inspect water, engine coolant or oil leaks |
- |
|
Air Not Coming from Desired Outlets (Cycle the mode lever and check airflow for outlets when engine is running, A/C switch is ON.) |
Blower motor with fan sub-assembly |
|
No. 1 air conditioning radiator damper servo sub-assembly (for mode switching) |
|
|
Mode doors: Check cooling, heating & door operation |
- |
|
Wire harness or connector |
- |
|
Air conditioning control assembly |
|
|
The temperature control dial is rotated to the MAX A/C position, but the MAX A/C mode is not activated. |
No. 2 air conditioning radiator damper servo sub-assembly (for air mix) |
|
Air conditioning control assembly |
|
|
Air conditioning amplifier assembly |
|
|
Wire harness or connector |
- |
|
Quick heater assembly does not operate*1 |
PTC heater circuit |
|
Air conditioning amplifier assembly |
|
|
ECM (for 2TR-FE) |
|
|
ECM (for 2GR-FKS) |
|
Precaution
PRECAUTION
1. The navigation system uses an SD card containing data such as map data.
Text in Illustration
*a
SD Card
2. Precaution for removing the SD card
NOTICE:
The SD card contains map data and various programs for the navigation
system.
With ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure listed to troubleshoot the differential
system (w/ Differential Lock).
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
...
System Description
SYSTEM DESCRIPTION
1. DESCRIPTION
A part-time 2-speed VF2CM transfer uses a touch select 2-4 and high-low
system, enabling the driver to switch between 2WD, H4 and L4 modes by turning
the transfer position switch.
Through these switch signals, the 4 wheel drive control ECU actua ...