Inspection

INSPECTION

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 check 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.
2. Turn the temperature control dial at maximum hot position.
3. Set the air flow control dial to the DEF position.
4. Turn the fan speed control dial to the maximum position.
5. Approach a strip of paper (b) in front of the in-vehicle sensor suction port (a) of the auto A/C control module, and check that air is being sucked into the port by seeing the paper moving towards the port.

NOTE:
- Be careful not to let the paper get sucked into the port.
- Hold the paper approx. 5 mm (0.02 in) away from port when the suction force is not very strong.






6. If the paper does not move at all, remove the lower cover and check for improper connection of the aspirator hose, lower cover, and heater unit, and fix them if necessary.

3. REFRIGERANT LINE
Check the connection for A/C line (A) and 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 illumination control