Code No. B1106 Electric compressor input voltage (low)




DIAGNOSIS CODE SET CONDITIONS


This code is stored when the low voltage abnormality (high voltage less than DC 195 V is detected for 2 seconds) judged by the A/C compressor inverter is detected.

PROBABLE CAUSES




DIAGNOSIS PROCEDURE


STEP 1. Check the high-voltage connector and wiring harness.


danger Carry out the check on the high-voltage circuit while reading carefully the precautions on handling a high-voltage vehicle. (Refer to GROUP 54D ).
danger Wear the specified protection equipment during the check.
1.Shut down the high voltage. (Refer to GROUP 00 - Precautions before Service - Precautions on handling high-voltage vehicle .)
2.Check the A/C compressor connector.
3.Check the high-voltage fuse No. 3 connecting bolt for looseness.
4.Visually check and check the continuity of the high-voltage fuse No. 3.
5.Visually check the following high-voltage wiring harnesses for damage.

Q. Is the check result normal?

Go to Step 4.
NO <Malfunction of high-voltage fuse No. 3> : Replace the high-voltage fuse No. 3.
NO <Malfunction of connector and wiring harness on A/C compressor side> : Repair the connector(s) or the wiring harness wire(s) at the A/C compressor side. Then go to Step 4.
NO <Malfunction of wiring harness on FPDU side> : Repair the connector(s) or the wiring harness wire(s) at the FPDU side. Then go to Step 2.

STEP 2. M.U.T.-III other system diagnosis code


Check whether the FMCU-related diagnosis code is stored.

Q. Is the diagnosis code stored?

Diagnose the FMCU (Refer to GROUP 54D - Diagnosis code chart for electric motor control unit (EMCU) and electric motor unit ). Then go to Step 3.
Go to Step 3.

STEP 3. M.U.T.-III other system diagnosis code


Check whether the GCU-related diagnosis code is stored.

Q. Is the diagnosis code stored?

Diagnose the GCU (Refer to GROUP 54D - Diagnosis code chart for electric motor control unit (EMCU) and electric motor unit ). Then go to Step 4.
Go to Step 4.

STEP 4. Check whether the diagnosis code is stored again.


Q. Is the diagnosis code stored?

Go to Step 5.
Intermittent malfunction. Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points, - How to Cope with Intermittent Malfunctions .)

STEP 5. After replacing the A/C compressor assembly, check again if the diagnosis code is stored.


Q. Is the diagnosis code stored?

Go to Step 1.
This diagnosis is complete.