Audio And Visual System (For Radio Receiver Type) Speaker Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)

INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

CHECK FRONT NO. 2 SPEAKER ASSEMBLY

INSPECT REAR SPEAKER SET

AUDIO AND VISUAL SYSTEM (for Radio Receiver Type) - Speaker Circuit


DESCRIPTION

The sound signals amplified by the radio receiver assembly are sent to the speakers from the radio receiver assembly via the speaker circuit.
If there is a short in a speaker circuit, the radio receiver assembly detects it and stops output to the speakers.
Thus sound cannot be heard from the speakers even if there is not a malfunction in the radio receiver assembly or speakers.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Audio Video.Audio And Visual System (For Radio Receiver Type).Audio And Visual System (For Radio Receiver Type) Speaker Circuit


INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)
  1. *1: for RH Side
  2. *2: for LH Side

  1. Disconnect the H27 and H46 radio receiver assembly connectors.

  1. Disconnect the J4*1 and/or K3*2 front No. 1 speaker assembly connector.

  1. Disconnect the H34*1 and/or H35*2 front No. 2 speaker assembly connector.

  1. for 3 Door:
    Disconnect the Q32*1 and/or R37*2 rear speaker set connector.

  1. for 5 Door:
    Disconnect the L1*1 and/or M1*2 rear speaker set connector.

    Standard Resistance:
    for 3 Door (RH Side)
    Tester Connection
    		Condition
    		Specified Condition
    H46-1 (FR+) - H34-3 (TWR+)
    		Always
    		Below 1 Ω
    H46-5 (FR-) - H34-1 (TWR-)
    		Always
    		Below 1 Ω
    H34-4 (+) - J4-1
    		Always
    		Below 1 Ω
    H34-2 (-) - J4-2
    		Always
    		Below 1 Ω
    H27-1 (RR+) - Q32-1
    		Always
    		Below 1 Ω
    H27-3 (RR-) - Q32-2
    		Always
    		Below 1 Ω
    H46-1 (FR+) - Body ground
    		Always
    		10 kΩ or higher
    H46-5 (FR-) - Body ground
    		Always
    		10 kΩ or higher
    H34-4 (+) - Body ground
    		Always
    		10 kΩ or higher
    H34-2 (-) - Body ground
    		Always
    		10 kΩ or higher
    H27-1 (RR+) - Body ground
    		Always
    		10 kΩ or higher
    H27-3 (RR-) - Body ground
    		Always
    		10 kΩ or higher
    for 3 Door (LH Side)
    Tester Connection
    		Condition
    		Specified Condition
    H46-2 (FL+) - H35-3 (TWL+)
    		Always
    		Below 1 Ω
    H46-6 (FL-) - H35-1 (TWL-)
    		Always
    		Below 1 Ω
    H35-4 (+) - K3-1
    		Always
    		Below 1 Ω
    H35-2 (-) - K3-2
    		Always
    		Below 1 Ω
    H27-2 (RL+) - R37-1
    		Always
    		Below 1 Ω
    H27-6 (RL-) - R37-2
    		Always
    		Below 1 Ω
    H46-2 (FL+) - Body ground
    		Always
    		10 kΩ or higher
    H46-6 (FL-) - Body ground
    		Always
    		10 kΩ or higher
    H35-4 (+) - Body ground
    		Always
    		10 kΩ or higher
    H35-2 (-) - Body ground
    		Always
    		10 kΩ or higher
    H27-2 (RL+) - Body ground
    		Always
    		10 kΩ or higher
    H27-6 (RL-) - Body ground
    		Always
    		10 kΩ or higher
    for 5 Door (RH Side)
    Tester Connection
    		Condition
    		Specified Condition
    H46-1 (FR+) - H34-3 (TWR+)
    		Always
    		Below 1 Ω
    H46-5 (FR-) - H34-1 (TWR-)
    		Always
    		Below 1 Ω
    H34-4 (+) - J4-1
    		Always
    		Below 1 Ω
    H34-2 (-) - J4-2
    		Always
    		Below 1 Ω
    H27-1 (RR+) - L1-1
    		Always
    		Below 1 Ω
    H27-3 (RR-) - L1-2
    		Always
    		Below 1 Ω
    H46-1 (FR+) - Body ground
    		Always
    		10 kΩ or higher
    H46-5 (FR-) - Body ground
    		Always
    		10 kΩ or higher
    H34-4 (+) - Body ground
    		Always
    		10 kΩ or higher
    H34-2 (-) - Body ground
    		Always
    		10 kΩ or higher
    H27-1 (RR+) - Body ground
    		Always
    		10 kΩ or higher
    H27-3 (RR-) - Body ground
    		Always
    		10 kΩ or higher
    for 5 Door (LH Side)
    Tester Connection
    		Condition
    		Specified Condition
    H46-2 (FL+) - H35-3 (TWL+)
    		Always
    		Below 1 Ω
    H46-6 (FL-) - H35-1 (TWL-)
    		Always
    		Below 1 Ω
    H35-4 (+) - K3-1
    		Always
    		Below 1 Ω
    H35-2 (-) - K3-2
    		Always
    		Below 1 Ω
    H27-2 (RL+) - M1-1
    		Always
    		Below 1 Ω
    H27-6 (RL-) - M1-2
    		Always
    		Below 1 Ω
    H46-2 (FL+) - Body ground
    		Always
    		10 kΩ or higher
    H46-6 (FL-) - Body ground
    		Always
    		10 kΩ or higher
    H35-4 (+) - Body ground
    		Always
    		10 kΩ or higher
    H35-2 (-) - Body ground
    		Always
    		10 kΩ or higher
    H27-2 (RL+) - Body ground
    		Always
    		10 kΩ or higher
    H27-6 (RL-) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

  1. Remove the front No. 1 speaker assembly LH and/or RH (LandCruiser RM000002MK7039X.html).

  1. Inspect the front No. 1 speaker assembly LH and/or RH (LandCruiser RM000002MK5028X.html).



NG
REPLACE FRONT NO. 1 SPEAKER ASSEMBLY (LandCruiser RM000002MK7039X.html)
OK


3.CHECK FRONT NO. 2 SPEAKER ASSEMBLY

  1. Replace the front No. 2 speaker LH and/or RH with a known good one (LandCruiser RM000000VEO04BX.html).

  1. Check that the malfunction disappears.

    HINT:
    1. Connect all the connectors that were disconnected from the front No. 2 speaker assemblies.
    2. When there is a possibility that either the right or left front speaker is defective, inspect by interchanging the right one with the left one.
    3. Perform the above inspection on both LH and RH sides.
    OK:
    Malfunction disappears.


NG
Go to step 4
OK

END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

4.INSPECT REAR SPEAKER SET

  1. Remove the rear speaker set LH and/or RH (LandCruiser RM000002MKB042X.html).

  1. Inspect the rear speaker set LH and/or RH (LandCruiser RM000002MK902UX.html).



NG
REPLACE REAR SPEAKER SET (LandCruiser RM000002MKB042X.html)
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM0000012A80HUX.html)