Inspection Procedure 15: The A/C indicator flashes


CIRCUIT OPERATION


If the A/C indicator flashes then the probable causes may be due to a defective A/C pressure system or insufficient refrigerant gas.

TROUBLESHOOTING HINTS



DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use the M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?
Go to Step 2.
Repair the CAN bus lines. (Refer to GROUP 54F - Troubleshooting .)

STEP 2. M.U.T.-III diagnosis code
Check whether the air conditioner sets a diagnosis code or not.

Q. Is the check result normal?
Go to Step 3.
Refer to diagnosis code chart .

STEP 3. M.U.T.-III data list
Check that the following service data display contents are normal. (Refer to .)

  • Item 04: Pressure sensor

Q. Is the check result normal?
Go to Step 4.
Inspection Procedure 20: Refer to A/C pressure sensor system <LHD> or Inspection Procedure 21: Refer to A/C pressure sensor system <RHD> .

STEP 4. Check the refrigerant level.
Refer to .

Q. Is the refrigerant level correct?
Go to Step 5.
Correct the refrigerant level (Refer to On-vehicle Service ).

STEP 5. Recheck the trouble symptom

Q. Is the check result normal?
Intermittent malfunction. (Refer to GROUP 00 - How to Cope with Intermittent Malfunction .)
Inspection Procedure 20: Refer to A/C pressure sensor system <LHD> or Inspection Procedure 21: Refer to A/C pressure sensor system <RHD> .