Audio Video. Audio And Visual System (For Radio And Display Type) Speaker Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK VEHICLE CONDITION (SPEAKER TYPE)

CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)

INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

CHECK FRONT NO. 2 SPEAKER ASSEMBLY

INSPECT REAR SPEAKER SET

CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)

INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

CHECK FRONT NO. 2 SPEAKER ASSEMBLY

CHECK FRONT NO. 4 SPEAKER ASSEMBLY

CHECK FRONT NO. 3 SPEAKER ASSEMBLY

INSPECT REAR SPEAKER SET

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

DESCRIPTION

*1: for 6 Speakers
*2: for 9 Speakers

The sound signals amplified by the radio and display receiver assembly*1 or stereo component amplifier assembly*2 are sent to the speakers from the radio and display receiver assembly*1 or stereo component amplifier assembly*2 via the speaker circuit.
If there is a short in a speaker circuit, the radio and display receiver assembly*1 or stereo component amplifier assembly*2 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 and display receiver assembly*1 or stereo component amplifier assembly*2 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 And Display Type) Speaker Circuit

INSPECTION PROCEDURE

1.CHECK VEHICLE CONDITION (SPEAKER TYPE)

Check the vehicle condition.
Result
Result
Proceed to
for 6 Speakers
A
for 9 Speakers
B

Go to step 6

A

2.CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)

*1: for RH Side
*2: for LH Side

Disconnect the H48 and H49 radio and display receiver assembly connectors.

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

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

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

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
H49-1 (FR+) - H34-3 (TWR+)	Always	Below 1 Ω
H49-5 (FR-) - H34-1 (TWR-)	Always	Below 1 Ω
H34-4 (+) - J4-1	Always	Below 1 Ω
H34-2 (-) - J4-2	Always	Below 1 Ω
H48-1 (RR+) - Q32-1	Always	Below 1 Ω
H48-3 (RR-) - Q32-2	Always	Below 1 Ω
H49-1 (FR+) - Body ground	Always	10 kΩ or higher
H49-5 (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
H48-1 (RR+) - Body ground	Always	10 kΩ or higher
H48-3 (RR-) - Body ground	Always	10 kΩ or higher

for 3 Door (LH Side)
Tester Connection	Condition	Specified Condition
H49-2 (FL+) - H35-3 (TWL+)	Always	Below 1 Ω
H49-6 (FL-) - H35-1 (TWL-)	Always	Below 1 Ω
H35-4 (+) - K3-1	Always	Below 1 Ω
H35-2 (-) - K3-2	Always	Below 1 Ω
H48-2 (RL+) - R37-1	Always	Below 1 Ω
H48-6 (RL-) - R37-2	Always	Below 1 Ω
H49-2 (FL+) - Body ground	Always	10 kΩ or higher
H49-6 (FL-) - Body ground	Always	10 kΩ or higher
H35-4 (+) - Body ground*2	Always	10 kΩ or higher
H35-2 (-) - Body ground*2	Always	10 kΩ or higher
H48-2 (RL+) - Body ground	Always	10 kΩ or higher
H48-6 (RL-) - Body ground	Always	10 kΩ or higher

for 5 Door (RH Side)
Tester Connection	Condition	Specified Condition
H49-1 (FR+) - H34-3 (TWR+)	Always	Below 1 Ω
H49-5 (FR-) - H34-1 (TWR-)	Always	Below 1 Ω
H34-4 (+) - J4-1	Always	Below 1 Ω
H34-2 (-) - J4-2	Always	Below 1 Ω
H48-1 (RR+) - L1-1	Always	Below 1 Ω
H48-3 (RR-) - L1-2	Always	Below 1 Ω
H49-1 (FR+) - Body ground	Always	10 kΩ or higher
H49-5 (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
H48-1 (RR+) - Body ground	Always	10 kΩ or higher
H48-3 (RR-) - Body ground	Always	10 kΩ or higher

for 5 Door (LH Side)
Tester Connection	Condition	Specified Condition
H49-2 (FL+) - H35-3 (TWL+)	Always	Below 1 Ω
H49-6 (FL-) - H35-1 (TWL-)	Always	Below 1 Ω
H35-4 (+) - K3-1	Always	Below 1 Ω
H35-2 (-) - K3-2	Always	Below 1 Ω
H48-2 (RL+) - M1-1	Always	Below 1 Ω
H48-6 (RL-) - M1-2	Always	Below 1 Ω
H49-2 (FL+) - Body ground	Always	10 kΩ or higher
H49-6 (FL-) - Body ground	Always	10 kΩ or higher
H35-4 (+) - Body ground*2	Always	10 kΩ or higher
H35-2 (-) - Body ground*2	Always	10 kΩ or higher
H48-2 (RL+) - Body ground	Always	10 kΩ or higher
H48-6 (RL-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

Remove the front No. 1 speaker assembly (LandCruiser RM000002MK7039X.html).

Inspect the front No. 1 speaker assembly (LandCruiser RM000002MK5028X.html).

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

OK

4.CHECK FRONT NO. 2 SPEAKER ASSEMBLY

Replace the front No. 2 speaker with a known good one (LandCruiser RM000000VEO04BX.html).

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.

Go to step 5

END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

5.INSPECT REAR SPEAKER SET

Remove the rear speaker set.
1. for 3 Door: LandCruiser RM000002MKB043X.html
2. for 5 Door: LandCruiser RM000002MKB042X.html

Inspect the rear speaker set.
1. for 3 Door: LandCruiser RM000002MK902VX.html
2. for 5 Door: LandCruiser RM000002MK902UX.html

Result
Result	Proceed to
OK	A
NG (for 3 Door)	B
NG (for 5 Door)	C

REPLACE REAR SPEAKER SET (LandCruiser RM000002MKB043X.html)

REPLACE REAR SPEAKER SET (LandCruiser RM000002MKB042X.html)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM000003YVJ042X.html)

6.CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)

*1: for RH Side
*2: for LH Side

Disconnect the H67 stereo component amplifier assembly connector.

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

Disconnect the H10*1 and/or H13*2 front No. 2 speaker assembly connector.

Disconnect the H21*1 and/or H22*2 front No. 3 speaker assembly connector.

Disconnect the H14 front No. 4 speaker assembly connector.

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

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

Standard Resistance:

for Front No. 4 Speaker Assembly
Tester Connection	Condition	Specified Condition
H67-7 (CTR+) - H14-2	Always	Below 1 Ω
H67-22 (CTR-) - H14-1	Always	Below 1 Ω
H67-7 (CTR+) - Body ground	Always	10 kΩ or higher
H67-22 (CTR-) - Body ground	Always	10 kΩ or higher

for 3 Door (RH Side)
Tester Connection	Condition	Specified Condition
H67-5 (WFR+) - J4-1	Always	Below 1 Ω
H67-20 (WFR-) - J4-2	Always	Below 1 Ω
H67-13 (FR+) - H21-1 (TWR+)	Always	Below 1 Ω
H67-28 (FR-) - H21-2 (TWR-)	Always	Below 1 Ω
H21-3 (+) - H10-2	Always	Below 1 Ω
H21-4 (-) - H10-1	Always	Below 1 Ω
H67-15 (RR+) - Q32-1	Always	Below 1 Ω
H67-30 (RR-) - Q32-2	Always	Below 1 Ω
H67-5 (WFR+) - Body ground	Always	10 kΩ or higher
H67-20 (WFR-) - Body ground	Always	10 kΩ or higher
H67-13 (FR+) - Body ground	Always	10 kΩ or higher
H67-28 (FR-) - Body ground	Always	10 kΩ or higher
H21-3 (+) - Body ground	Always	10 kΩ or higher
H21-4 (-) - Body ground	Always	10 kΩ or higher
H67-15 (RR+) - Body ground	Always	10 kΩ or higher
H67-30 (RR-) - Body ground	Always	10 kΩ or higher

for 3 Door (LH Side)
Tester Connection	Condition	Specified Condition
H67-4 (WFL+) - K3-1	Always	Below 1 Ω
H67-19 (WFL-) - K3-2	Always	Below 1 Ω
H67-12 (FL+) - H22-1 (TWL+)	Always	Below 1 Ω
H67-27 (FL-) - H22-2 (TWL-)	Always	Below 1 Ω
H22-3 (+) - H13-2	Always	Below 1 Ω
H22-4 (-) - H13-1	Always	Below 1 Ω
H67-14 (RL+) - R37-1	Always	Below 1 Ω
H67-29 (RL-) - R37-2	Always	Below 1 Ω
H67-4 (WFL+) - Body ground	Always	10 kΩ or higher
H67-19 (WFL-) - Body ground	Always	10 kΩ or higher
H67-12 (FL+) - Body ground	Always	10 kΩ or higher
H67-27 (FL-) - Body ground	Always	10 kΩ or higher
H22-3 (+) - Body ground	Always	10 kΩ or higher
H22-4 (-) - Body ground	Always	10 kΩ or higher
H67-14 (RL+) - Body ground	Always	10 kΩ or higher
H67-29 (RL-) - Body ground	Always	10 kΩ or higher

for 5 Door (RH Side)
Tester Connection	Condition	Specified Condition
H67-5 (WFR+) - J4-1	Always	Below 1 Ω
H67-20 (WFR-) - J4-2	Always	Below 1 Ω
H67-13 (FR+) - H21-1 (TWR+)	Always	Below 1 Ω
H67-28 (FR-) - H21-2 (TWR-)	Always	Below 1 Ω
H21-3 (+) - H10-2	Always	Below 1 Ω
H21-4 (-) - H10-1	Always	Below 1 Ω
H67-15 (RR+) - L1-1	Always	Below 1 Ω
H67-30 (RR-) - L1-2	Always	Below 1 Ω
H67-5 (WFR+) - Body ground	Always	10 kΩ or higher
H67-20 (WFR-) - Body ground	Always	10 kΩ or higher
H67-13 (FR+) - Body ground	Always	10 kΩ or higher
H67-28 (FR-) - Body ground	Always	10 kΩ or higher
H21-3 (+) - Body ground	Always	10 kΩ or higher
H21-4 (-) - Body ground	Always	10 kΩ or higher
H67-15 (RR+) - Body ground	Always	10 kΩ or higher
H67-30 (RR-) - Body ground	Always	10 kΩ or higher

for 5 Door (LH Side)
Tester Connection	Condition	Specified Condition
H67-4 (WFL+) - K3-1	Always	Below 1 Ω
H67-19 (WFL-) - K3-2	Always	Below 1 Ω
H67-12 (FL+) - H22-1 (TWL+)	Always	Below 1 Ω
H67-27 (FL-) - H22-2 (TWL-)	Always	Below 1 Ω
H22-3 (+) - H13-2	Always	Below 1 Ω
H22-4 (-) - H13-1	Always	Below 1 Ω
H67-14 (RL+) - M1-1	Always	Below 1 Ω
H67-29 (RL-) - M1-2	Always	Below 1 Ω
H67-4 (WFL+) - Body ground	Always	10 kΩ or higher
H67-19 (WFL-) - Body ground	Always	10 kΩ or higher
H67-12 (FL+) - Body ground	Always	10 kΩ or higher
H67-27 (FL-) - Body ground	Always	10 kΩ or higher
H22-3 (+) - Body ground	Always	10 kΩ or higher
H22-4 (-) - Body ground	Always	10 kΩ or higher
H67-14 (RL+) - Body ground	Always	10 kΩ or higher
H67-29 (RL-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

7.INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

Remove the front No. 1 speaker assembly (LandCruiser RM000002MK7039X.html).

Inspect the front No. 1 speaker assembly (LandCruiser RM000002MK5028X.html).

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

OK

8.CHECK FRONT NO. 2 SPEAKER ASSEMBLY

Replace the front No. 2 speaker with a known good one (LandCruiser RM000000VEO04BX.html).

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.

Go to step 9

END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

9.CHECK FRONT NO. 4 SPEAKER ASSEMBLY

Replace the front No. 4 speaker with a known good one (LandCruiser RM000000VEO04BX.html).

Check that the malfunction disappears.
HINT:
Connect all the connectors that were disconnected from the front No. 4 speaker assemblies.
OK:
Malfunction disappears.

Go to step 10

END (FRONT NO. 4 SPEAKER ASSEMBLY IS DEFECTIVE)

10.CHECK FRONT NO. 3 SPEAKER ASSEMBLY

Replace the front No. 3 speaker with a known good one (LandCruiser RM000003AW801GX.html).

Check that the malfunction disappears.
HINT:
1. Connect all the connectors that were disconnected from the front No. 3 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.

Go to step 11

END (FRONT NO. 3 SPEAKER ASSEMBLY IS DEFECTIVE)

11.INSPECT REAR SPEAKER SET

Remove the rear speaker set.
1. for 3 Door: LandCruiser RM000002MKB043X.html
2. for 5 Door: LandCruiser RM000002MKB042X.html

Inspect the rear speaker set.
1. for 3 Door: LandCruiser RM000002MK902VX.html
2. for 5 Door: LandCruiser RM000002MK902UX.html

Result
Result	Proceed to
OK	A
NG (for 3 Door)	B
NG (for 5 Door)	C

REPLACE REAR SPEAKER SET (LandCruiser RM000002MKB043X.html)

REPLACE REAR SPEAKER SET (LandCruiser RM000002MKB042X.html)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM000003YVJ042X.html)