Code No. B1105 Electric compressor (communication error)










DIAGNOSIS CODE SET CONDITIONS



PROBABLE CAUSES



  • Compressor & heater controller
  • A/C compressor power supply
  • Malfunction of A/C compressor
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-101 A/C control unit connector and A-111 A/C compressor connector

Q. Is the check result normal?
Go to Step 2.
Repair the damaged connector.

STEP 2. Check the wiring harness between C-111 A/C compressor connector terminal No. 3 and A-101 A/C control unit connector terminal No. 11.

  • Check the input and output lines for open or short circuit.
    note Before checking the wiring harness, check the intermediate connector B-27 and repair it if necessary.

Q. Is the check result normal?
Go to Step 3.
Repair the wiring harness.

STEP 3. Check the wiring harness between C-101 A/C compressor terminal No. 1 and the fusible link (2).

  • Check the power supply line for open circuit.

Q. Is the check result normal?
Go to Step 4.
Repair the wiring harness.

STEP 4. After replacing the compressor & heater controller, check again if the diagnosis code is set.

Q. Is the diagnosis code set?
Replace the A/C compressor.
Intermittent malfunction. Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points, - How to Cope with Intermittent Malfunctions .)