Dtc B15C3 Speaker Output Short

Audio Visual Telematics. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
Audio Video. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

CHECK FOR DTC

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER - FRONT NO. 2 SPEAKER)

CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER - FRONT NO. 1 SPEAKER)

INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER - REAR SPEAKER)

INSPECT REAR SPEAKER ASSEMBLY

DTC B15C3 Speaker Output Short


DESCRIPTION

This DTC is stored when a malfunction occurs in the speakers.

DTC Code
DTC Detection Condition
Trouble Area
B15C3
A short is detected in the speaker output circuit.
  1. Speakers
  2. Radio and display receiver assembly
  3. Harness or connector

WIRING DIAGRAM


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Audio Video.Audio And Visual System (For Radio Receiver Type). Dtc B15C3 Speaker Output Short


INSPECTION PROCEDURE

1.CHECK FOR DTC

  1. Disconnect the G129 and G128 radio and display receiver assembly connectors.

  1. Clear the DTC (HILUX_TGN26 RM0000011BU0J0X.html).

  1. Check if DTC B15C3 is output.

    OK:
    DTC B15C3 is not output.


NG
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY (HILUX_TGN26 RM000003OG900OX.html)
OK


2.CHECK FOR DTC

  1. Reconnect the G128 radio and display receiver assembly connector.

  1. Clear the DTC (HILUX_TGN26 RM0000011BU0J0X.html).

  1. Check if DTC B15C3 is output.

    OK:
    DTC B15C3 is not output.


NG
Go to step 7
OK


3.CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER - FRONT NO. 2 SPEAKER)

  1. Disconnect the G129 radio and display receiver assembly connector.

  1. Disconnect the H6*1 and/or I6*2 front No. 2 speaker connector.

    1. *1: for RH
    2. *2: for LH

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

    Standard Resistance:
    for RH
    Tester Connection
    		Condition
    		Specified Condition
    G129-1 (FR+) - H6-4 (TWR+)
    		Always
    		Below 1 Ω
    G129-5 (FR-) - H6-2 (TWR-)
    G129-1 (FR+) - Body ground
    		Always
    		10 kΩ or higher
    G129-5 (FR-) - Body ground
    for LH
    Tester Connection
    		Condition
    		Specified Condition
    G129-2 (FL+) - I6-4 (TWL+)
    		Always
    		Below 1 Ω
    G129-6 (FL-) - I6-2 (TWL-)
    G129-2 (FL+) - Body ground
    		Always
    		10 kΩ or higher
    G129-6 (FL-) - Body ground


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER - FRONT NO. 1 SPEAKER)
  1. *1: for RH
  2. *2: for LH

  1. Disconnect the H6*1 and/or I6*2 front No. 2 speaker connector.

  1. Disconnect the H4*1 and/or I1*2 front No. 1 speaker connector.

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

    Standard Resistance:
    for RH
    Tester Connection
    		Condition
    		Specified Condition
    H6-3 (+) - H4-1
    		Always
    		Below 1 Ω
    H6-1 (-) - H4-2
    H6-3 (+) - Body ground
    		Always
    		10 kΩ or higher
    H6-1 (-) - Body ground
    for LH
    Tester Connection
    		Condition
    		Specified Condition
    I6-3 (+) - I1-1
    		Always
    		Below 1 Ω
    I6-1 (-) - I1-2
    I6-3 (+) - Body ground
    		Always
    		10 kΩ or higher
    I6-1 (-) - Body ground


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

  1. Disconnect the H4*1 and/or I1*2 front No. 1 speaker connector.

    1. *1: for RH
    2. *2: for LH

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		Always
    		4 Ω


NG
REPLACE FRONT NO. 1 SPEAKER ASSEMBLY (HILUX_TGN26 RM0000014T7034X.html)
OK


6.INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

  1. Temporarily replace the front No. 2 speaker with a new or normally functioning one (HILUX_TGN26 RM0000014T7034X.html).

  1. Check that the malfunction disappears.

    HINT:
    1. Connect all the speaker connectors to the speakers.
    2. When there is a possibility that either the right or left speaker is defective, inspect by interchanging the right one with the left one.
    Result
    Result
    		Proceed to
    Malfunction disappears
    		A
    Malfunction does not disappear
    		B


B
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY (HILUX_TGN26 RM000003OG900OX.html)
A

END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

7.CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER - REAR SPEAKER)

  1. Disconnect the G128 radio and display receiver assembly connector.

  1. Disconnect the J7*1 and/or J3*2 rear speaker connector.

    1. *1: for RH
    2. *2: for LH

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

    Standard Resistance:
    for RH
    Tester Connection
    		Condition
    		Specified Condition
    G128-1 (RR+) - J7-1
    		Always
    		Below 1 Ω
    G128-3 (RR-) - J7-2
    G128-1 (RR+) - Body ground
    		Always
    		10 kΩ or higher
    G128-3 (RR-) - Body ground
    for LH
    Tester Connection
    		Condition
    		Specified Condition
    G128-2 (RL+) - J3-1
    		Always
    		Below 1 Ω
    G128-6 (RL-) - J3-2
    G128-2 (RL+) - Body ground
    		Always
    		10 kΩ or higher
    G128-6 (RL-) - Body ground


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


8.INSPECT REAR SPEAKER ASSEMBLY


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

  1. Disconnect the J7*1 and/or J3*2 rear speaker connector.

    1. *1: for RH
    2. *2: for LH

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		Always
    		4 Ω


NG
REPLACE REAR SPEAKER ASSEMBLY (HILUX_TGN26 RM0000014TB022X.html)
OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY (HILUX_TGN26 RM000003OG900OX.html)