Inspection Procedure 10: The A/C indicator flashes

CIRCUIT OPERATION

When the A/C indicator flashes, A/C-ECU determines if the refrigerant amount is less than the specified amount or the refrigerant pressure is abnormal from the two systems of the ambient temperature and refrigerant pressure, and the room temperature and air thermo sensor.

TROUBLESHOOTING HINTS

Improper amount of refrigerant
Malfunction of the A/C-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code

Check that the diagnosis code related to the A/C is not set.

Q. Is the check result normal?

	Go to Step 2.

	Carry out the diagnosis code procedures. Refer to .

STEP 2. Remove the refrigerant, and fill it to the specified amount.

Remove the refrigerant and fill it to the specified amount. Then check if the A/C operates normally. Refer to

Q. Is the check result normal?

	This diagnosis is complete.

	Go to Step 3.

STEP 3. Recheck the trouble symptom

Check that the compressor works normally.

Q. Is the check result normal?

	This diagnosis is complete.

	Replace the A/C-ECU.