AIR CONDITIONING SYSTEM, Diagnostic DTC:B14B9

DTC Code DTC Name
B14B9 Open in Ion Generator Circuit

DESCRIPTION

The ion generator sub-assembly operates when both the ion generator switch and the blower switch are on. The air conditioning amplifier assembly sends a drive signal to the ion generator sub-assembly. When the ion generator sub-assembly receives the drive signal and starts to operate, it outputs an operation condition signal to the air conditioning amplifier assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
B14B9 Open in Ion Generator Circuit Open in ion generator sub-assembly circuit

  • Harness or connector between ion generator sub-assembly and IG circuit

  • Harness or connector between ion generator sub-assembly and body ground

  • Harness or connector between ion generator sub-assembly and air conditioning amplifier assembly

  • Ion generator sub-assembly

  • Air conditioning amplifier assembly

Memorized

(12 sec. or more)*

WIRING DIAGRAM

B005MYIE02

CAUTION / NOTICE / HINT

Note


  • If the battery voltage is low, the ion generator may not operate. When "Operation of Electrical Items Restricted." is displayed on the multi-information display in the combination meter assembly, inspect the battery, referring to On-vehicle Inspection for the charging system.

    w/o Stop and Start System: Click here

    w/ Stop and Start System: Click here

  • If the battery voltage is low, the ion generator may not operate. When "Operation of Electrical Items Restricted." is not displayed on the multi-information display in the combination meter assembly, check the Data List item "Battery Control Count (Body ECU)".

    Click here

  • Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Air Conditioner / Active Test.

    5. Perform the Active Test according to the display on the GTS.


      Body Electrical > Air Conditioner > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Ion Generator Ion generator sub-assembly OFF, ON -

      Body Electrical > Air Conditioner > Active Test
      Tester Display
      Ion Generator
      OK
      Ion generator sub-assembly operates normally.
      Result
      Result Proceed to
      NG A
      OK (When troubleshooting according to Problem Symptoms Table) B
      OK (When troubleshooting according to the DTC) C

    B

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    C

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    A

  2. CHECK HARNESS AND CONNECTOR (ION GENERATOR SUB-ASSEMBLY - BODY GROUND)


    1. Disconnect the K9 ion generator sub-assembly connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      K9-4 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (ION GENERATOR SUB-ASSEMBLY - IG CIRCUIT)


    1. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      K9-1 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      K9-1 (IG) - Body ground Engine switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (ION GENERATOR SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)


    1. Disconnect the J43 air conditioning amplifier assembly connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      J43-26 (NAIN) - K9-3 (IG+) Always Below 1 Ω
      J43-7 (NANO) - K9-2 (PCL) Always Below 1 Ω
      J43-26 (NAIN) or K9-3 (IG+) - Body ground Always 10 kΩ or higher
      J43-7 (NANO) or K9-2 (PCL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

  5. REPLACE ION GENERATOR SUB-ASSEMBLY


    1. Replace the ion generator sub-assembly.

      Click here

      Tech Tips

      Since the ion generator sub-assembly cannot be inspected while it is removed from the vehicle, replace the ion generator sub-assembly with a new or known good one and check that the condition returns to normal.

    2. Check for DTCs.

      Click here


      Body Electrical > Air Conditioner > Trouble Codes
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

    END (ION GENERATOR SUB-ASSEMBLY WAS DEFECTIVE)