Important: 

1

1. Park the vehicle inside or in the shade.
2. Open the windows in order to ventilate the interior of the vehicle.
3. If the A/C system was operating, allow the A/C system to equalize for about 2 minutes.
4. Turn OFF the ignition.
5. Install the J 43600 ACR 2000 Air Conditioning Service Center.
6. Record the ambient air temperature displayed on the J 43600 .
7. Record the low and high side STATIC pressure readings.

Are both the low side and high side pressures within the specified value?

More than 16°C (60°F) - 345 kPa (50 psi)

More than 24°C (75°F) - 483 kPa (70 psi)

More than 33°C (90°F) - 690 kPa (100 psi)

Go to Step 2

Go to Leak Testing

2

Important: Record the relative humidity and the ambient air temperature at the time of the test.

1. Close the vehicle doors and windows.
2. Open the drivers door window 12.7-15.2 cm (5-6 in).
3. Select the following HVAC control settings:

•	The A/C is ON.

•	The coldest temperature setting

•	The maximum blower speed

•	Recirculation mode

•	The I/P panel outlet mode

•	All I/P panel outlets are OPEN.

4. Install the temperature probes of the J 43600 in the left and right center panel air outlets.
5. Apply the parking brake.
6. Place the transaxle/transmission in one of the following positions:

•	PARK (Automatic)

•	NEUTRAL (Manual)

7. Start the engine and warm to operating temperature.
8. Operate the A/C system for 5 minutes.
9. Inspect A/C components for the following conditions:

•	Abnormal frost areas

•	Unusual noises

Important: Press the RESET button, before using the print function of the J 43600 .

10. Print the following information:

•	The panel outlet air temperatures

•	The low-side pressure

•	The high-side pressure

11. Compare the low and high side pressures and the panel output temperatures to the A/C Performance Table below.

Does all the data recorded fall within the specified ranges of the A/C Performance Table below?

--

Go to Step 8

Go to Step 3

3

If the pressures and temperatures recorded do not fall within the specified ranges:

1. Continue to operate the A/C system for an additional 5 minutes.
2. RESET the J 43600 and record the pressures and temperatures again.
3. Compare the low and high side pressures and the panel output temperature to the table below.

Does all the data recorded fall within the specified ranges of the table below?

--

Go to Step 8

Go to Step 4

Do the high and low side pressures fall within the specified ranges, but the panel outlet temperatures do not?

--

Go to Air Conditioning (A/C) Diagnostics - Pressure Zone A

Go to Step 5

Is the low side pressure greater than the specified range, but the high side pressure within or less than the specified range?

--

Go to Air Conditioning (A/C) Diagnostics - Pressure Zone B

Go to Step 6

Are the low and high side pressures both greater than the specified ranges?

--

Go to Air Conditioning (A/C) Diagnostics - Pressure Zone C

Go to Step 7

Is the high side pressure greater than the specified range, but the low side pressure is within or less than the specified range?

--

Go to Air Conditioning (A/C) Diagnostics - Pressure Zone D

Go to Step 8

Operate the system in order to verify the test results.

Did you find the same results?

--

System OK

Go to Symptoms - HVAC Systems - Manual