Inspection
General DescriptionINSPECTION
Before performing the diagnosis, check the following items which may cause problems in the A/C system.
1. BATTERY
1. Measure the battery voltage and specific gravity of the electrolyte.
Standard voltage: 12 V
Specific gravity: 1.260 or more
2. Check the condition of the fuses for A/C system power supply and other fuses.
3. Check the condition of harness and harness connector connections.
2. ASPIRATOR HOSE
1. Turn the ignition switch to ON, and press the A/ C switch.
2. Turn the temperature control dial to maximum hot position.
3. Set the outlet opening to the defroster position.
4. Turn the fan switch to MAX.
5. Near a thin strip of paper to the in-vehicle sensor suction port (A) at the instrument panel lower cover, to see whether the strip becomes drawn towards the port, indicating that air is being drawn in at the port.
NOTE: Be careful not to let the paper get sucked into the port.
6. If the paper does not move at all, first remove the instrument panel lower cover. Then, check the aspirator hose (A), in-vehicle sensor and heater module for improper connection, and perform repairs, if necessary.
3. A/C LINE
Check the connection for A/C line (A) and lower side high-pressure pipe.
4. CONTROL LINKAGE
1. Check the state of mode door linkage.
2. Check the state of air mix door linkage.
3. Check the state of FRESH/RECIRC door linkage.
5. CONTROL SWITCHES
Start the engine and warm up completely.
1. Inspection using switches
2. Inspection of compressor operation
3. Inspection of illumination control
