LIGHTING SYSTEM (for Hatchback) > ACC Signal Circuit


DESCRIPTION

This circuit detects the ignition switch ACC or off condition, and sends it to the main body ECU.

WIRING DIAGRAM


E231939E01


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.READ VALUE USING TECHSTREAM
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Body Electrical / Main Body / Data List.

  1. According to the display on the Techstream, read the Data List.

    Main Body 
    Tester Display
    Measurement Item/Range
    Normal Condition
    Diagnostic Note
    ACC SW
    Ignition switch ACC signal /
    OFF or ON
    OFF: Ignition switch off
    ON: Ignition switch ACC or ON
    -

    OK:
    Normal conditions listed above are displayed.


NG
Go to step 2
OK

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

2.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BATTERY AND BODY GROUND)
E231940E01
  1. Disconnect the 3E and 3B instrument panel junction block assembly connectors.

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

    Standard Voltage:
    Tester Connection
    Switch Condition
    Specified Condition
    3E-1 - Body ground
    Always
    11 to 14 V
  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    Condition
    Specified Condition
    3B-8 - Body ground
    Always
    Below 1 Ω
    Text in Illustration 
    *a
    Front view of wire harness connector
    (to Instrument Panel Junction Block Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - IGNITION SWITCH)


    E229357E01
  1. Reconnect the instrument panel junction block assembly connectors.

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

    Standard Voltage:
    Tester Connection
    Switch Condition
    Specified Condition
    3B-37 - Body ground
    Ignition switch ACC
    11 to 14 V
    Text in Illustration 
    *a
    Component with harness connected
    (Instrument Panel Junction Block Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.REPLACE MAIN BODY ECU
  1. Replace the main body ECU (Click here).


NEXT


5.READ VALUE USING TECHSTREAM
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Body Electrical / Main Body / Data List.

  1. According to the display on the Techstream, read the Data List.

    Main Body 
    Tester Display
    Measurement Item/Range
    Normal Condition
    Diagnostic Note
    ACC SW
    Ignition switch ACC signal /
    OFF or ON
    OFF: Ignition switch off
    ON: Ignition switch ACC or ON
    -

    OK:
    Normal conditions listed above are displayed.


NG
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
OK

END (MAIN BODY ECU WAS DEFECTIVE)