AIR CONDITIONING SYSTEM, Diagnostic DTC:B14B9

DTC Code DTC Name
B14B9 Open in Ion Generator Circuit

DESCRIPTION

The No. 1 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 No. 1 ion generator sub-assembly. When the No. 1 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 DTC Detection Condition Memory
B14B9 Open in Ion Generator Circuit Open in ion generator sub-assembly circuit

  • Harness or connector

  • No. 1 ion generator sub-assembly

  • Air conditioning amplifier assembly

Memorized

(12 sec. or more)*

WIRING DIAGRAM

B001ADBE02

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.

      Air Conditioner
      Tester Display Measurement Item Control Range Diagnostic Note
      Ion Generator No. 1 ion generator sub-assembly OFF or ON -
      OK
      No. 1 ion generator sub-assembly operates normally.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (NO. 1 ION GENERATOR SUB-ASSEMBLY - BATTERY AND BODY GROUND)


    1. B0018CPC15
      *a

      Front view of wire harness connector

      (to No. 1 Ion Generator Sub-assembly)

      Disconnect the No. 1 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
      E177-4 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E177-1 (IG) - Body ground Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (NO. 1 ION GENERATOR SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)


    1. Disconnect the E177 No. 1 ion generator sub-assembly connector.

    2. Disconnect the E35 and E36 air conditioning amplifier assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E177-3 (IG+) - E35-23 (NAIN) Always Below 1 Ω
      E177-2 (PCL) - E36-10 (NANO) Always Below 1 Ω
      E177-3 (IG+) or E35-23 (NAIN) - Body ground Always 10 kΩ or higher
      E177-2 (PCL) or E36-10 (NANO) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

  4. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY


    1. B00185SC05
      *a

      Component with harness connected

      (No. 1 Ion Generator Sub-assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E177-3 (IG+) - Body ground

      • Engine switch on (IG)

      • Blower switch: LO

      • "nanoe" display: Off

      		 4.75 to 5.25 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    OK

  5. CHECK NO. 1 ION GENERATOR SUB-ASSEMBLY


    1. B001ACDC56
      *a

      Component with harness connected

      (Air Conditioning Amplifier Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E35-23 (NAIN) - Body ground

      • Engine switch on (IG)

      • Blower switch: LO

      • "nanoe" display: On

      		 Below 2.2 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 1 ION GENERATOR SUB-ASSEMBLY Click here

    NG

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here