INSPECTION PROCEDURE 7: The A/C Indicator Flashes < Vehicles with 3.0L Engine >.: Diagnosis

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.

STEP 1. Check the drive belt tension.
Refer to Maintenance Service - DRIVE BELTS .

Q: Is the drive belt tension in good condition?

YES : Go to Step 2.

NO: Repair. Then go to Step 4.
STEP 2. Check the revolution pick-up sensor.
Measure the resistance between terminals 1 and 3. Check that the measured value is at the standard value.

Standard value: 405 +/- 35 Ω when the ambient air temperature is 20°C (68°F)

Q: Is the measured value at the standard value?

YES : Go to Step 3.

NO: Replace. Then go to Step 3.

Fig 1: Measuring Resistance Between Terminals 1 And 3
Courtesy of DAIMLERCHRYSLER CORPORATION
STEP 3. Check the harness wire between compressor connector B-18 and automatic compressor controller connector C-15.
Q: Is the harness wire between compressor connector B-18 and automatic compressor controller connector C-15 in good condition?

YES : Go to Step 4.

NO: Repair. Then go to Step 4.

Fig 2: Identifying Connector B-18
Courtesy of DAIMLERCHRYSLER CORPORATION

Fig 3: Identifying Connector C-15
Courtesy of DAIMLERCHRYSLER CORPORATION
STEP 4. Measure the automatic compressor controller terminal voltage.
Refer to CHECK AT AUTOMATIC COMPRESSOR CONTROLLER TERMINAL .

Q: Is the automatic compressor controller terminal voltage in good condition?

YES : Go to Step 5.

NO: Replace automatic compressor controller. Then go to Step 5.
STEP 5. Retest the system.
Q: Does the A/C indicator flashes?

YES : Go to Step 1.

NO: The procedure is complete. (If no malfunctions are found in all steps, an intermittent malfunction is suspected. Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS .)