Toyota Venza: Speaker Circuit

Toyota Venza Service Manual / Navigation / Multi Info Display / Navigation System / Speaker Circuit

DESCRIPTION

for 6 Speakers:

If there is a short in a speaker circuit, the navigation receiver assembly detects it and stops output to the speakers.

Thus sound cannot be heard from the speakers even if there is no malfunction in the navigation receiver assembly or speakers.

for 13 Speakers:

If there is a short in a speaker circuit, the stereo component amplifier assembly detects it and stops output to the speakers.

Thus sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly or speakers.

WIRING DIAGRAM

1. for 6 Speakers

2. for 13 Speakers

PROCEDURE

1.	CONFIRM MODEL

(a) Choose the model to be inspected.

Result	Proceed to
for 6 Speakers	A
for 13 Speakers	B

GO TO STEP 9

2.	CHECK SPEAKER (OPERATION CHECK)

(a) Enter the "System Check Mode" screen.

Refer to Check Speaker in Operation Check (See page ).

(b) Perform the operation check above and determine the speaker that is not operating.

Not Operating Speaker	Proceed to
Front No. 1 speaker assembly or front No. 2 speaker assembly	A
Rear speaker assembly	B

HINT:

If sound cannot be heard from any speaker, inspect all of them.

GO TO STEP 7

3.	CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)

(a) Disconnect the E38 navigation receiver assembly connector.

(b) Disconnect the E28 and E29 front No. 2 speaker assembly connectors.

(d) Measure the resistance between the navigation receiver assembly and each of the front No. 2 speaker assemblies to check for an open circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E38-1 (FR+) - E28-2 (TWR+)	Always	Below 1 Ω
E38-5 (FR-) - E28-4 (TWR-)	Always	Below 1 Ω
E38-2 (FL+) - E29-2 (TWL+)	Always	Below 1 Ω
E38-6 (FL-) - E29-4 (TWL-)	Always	Below 1 Ω

(e) Measure the resistance between each of the front No. 2 speaker assemblies and the front No. 1 speaker assemblies to check for an open circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E28-1 (+) - H1-1	Always	Below 1 Ω
E28-3 (-) - H1-2	Always	Below 1 Ω
E29-1 (+) - I1-1	Always	Below 1 Ω
E29-3 (-) - I1-2	Always	Below 1 Ω

(f) Measure the resistance between the navigation receiver assembly and body ground to check for a short circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E38-1 (FR+) - Body ground	Always	10 kΩ or higher
E38-5 (FR-) - Body ground	Always	10 kΩ or higher
E38-2 (FL+) - Body ground	Always	10 kΩ or higher
E38-6 (FL-) - Body ground	Always	10 kΩ or higher

(g) Measure the resistance between each of the front No. 2 speaker assemblies and body ground to check for a short circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E28-1 (+) - Body ground	Always	10 kΩ or higher
E28-3 (-) - Body ground	Always	10 kΩ or higher
E29-1 (+) - Body ground	Always	10 kΩ or higher
E29-3 (-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

(a) Remove the front No. 1 speaker assembly (See page ).

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 - 2	Always	3.2 to 4.8 Ω

Text in Illustration

*a	Component without harness connected (Front No. 1 Speaker Assembly)

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY

5.	INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

(a) Remove the front No. 2 speaker assembly (See page ).

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

Standard Resistance:

for RH:

Tester Connection	Condition	Specified Condition
4 (TWR-) - 2 (TWR+)	Always	10 kΩ or higher
3 (-) - 4 (TWR-)	Always	Below 1 Ω
1 (+) - 2 (TWR+)	Always	Below 1 Ω

for LH:

Tester Connection	Condition	Specified Condition
4 (TWL-) - 2 (TWL+)	Always	10 kΩ or higher
3 (-) - 4 (TWL-)	Always	Below 1 Ω
1 (+) - 2 (TWL+)	Always	Below 1 Ω

Text in Illustration

for RH

for LH

Component without harness connected

(Front No. 2 Speaker Assembly)

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY

6.	REPLACE FRONT NO. 2 SPEAKER ASSEMBLY

(a) Check that the malfunction disappears when a known good speaker is installed (See page ).

OK:

Malfunction disappears.

HINT:

Connect all the connectors to the front No. 2 speaker assemblies that were disconnected.
When there is a possibility that either the right or left front No. 2 speaker assembly is defective, inspect by interchanging the right one with the left one.
Perform the above inspection on both the LH and RH side.

END

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

7.	CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY)

(a) Disconnect the E39 navigation receiver assembly connector.

(b) Disconnect the J4 and K4 rear speaker assembly connectors.

(c) Measure the resistance between the navigation receiver assembly and each of the rear speaker assemblies to check for an open circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E39-1 (RR+) - J4-1	Always	Below 1 Ω
E39-3 (RR-) - J4-2	Always	Below 1 Ω
E39-2 (RL+) - K4-1	Always	Below 1 Ω
E39-6 (RL-) - K4-2	Always	Below 1 Ω

(d) Measure the resistance between the navigation receiver assembly and body ground to check for a short circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E39-1 (RR+) - Body ground	Always	10 kΩ or higher
E39-3 (RR-) - Body ground	Always	10 kΩ or higher
E39-2 (RL+) - Body ground	Always	10 kΩ or higher
E39-6 (RL-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.	INSPECT REAR SPEAKER ASSEMBLY

(a) Remove the rear speaker assembly (See page ).

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 - 2	Always	3.2 to 4.8 Ω

Text in Illustration

*a	Component without harness connected (Rear Speaker Assembly)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE REAR SPEAKER ASSEMBLY

9.	CHECK SPEAKER (OPERATION CHECK)

(a) Enter the "System Check Mode" screen.

Refer to Check Speaker in Operation Check (See page ).

(b) Perform the operation check above and determine the speaker that is not operating.

Not Operating Speaker	Proceed to
Front No. 3 speaker assembly or front No. 2 speaker assembly	A
Front No. 1 speaker assembly	B
Front No. 4 speaker assembly	C
Rear speaker assembly, rear No. 2 speaker assembly or rear No. 3 speaker assembly	D

HINT:

If sound cannot be heard from any speaker, inspect all of them.

GO TO STEP 14

GO TO STEP 16

GO TO STEP 18

10.	CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY - FRONT NO. 3 SPEAKER ASSEMBLY)

(a) Disconnect the E15 stereo component amplifier assembly connector.

(b) Disconnect the E25 and E26 front No. 2 speaker assembly connectors.

(d) Measure the resistance between the stereo component amplifier assembly and each of the front No. 2 speaker assemblies to check for an open circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E15-10 (FR+) - E25-1 (TWR+)	Always	Below 1 Ω
E15-9 (FR-) - E25-2 (TWR-)	Always	Below 1 Ω
E15-3 (FL+) - E26-1 (TWL+)	Always	Below 1 Ω
E15-8 (FL-) - E26-2 (TWL-)	Always	Below 1 Ω

(e) Measure the resistance between each of the front No. 2 speaker assemblies and the front No. 3 speaker assemblies to check for an open circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E25-3 (+) - E23-3	Always	Below 1 Ω
E25-4 (-) - E23-2	Always	Below 1 Ω
E26-3 (+) - E24-3	Always	Below 1 Ω
E26-4 (-) - E24-2	Always	Below 1 Ω

(f) Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E15-10 (FR+) - Body ground	Always	10 kΩ or higher
E15-9 (FR-) - Body ground	Always	10 kΩ or higher
E15-3 (FL+) - Body ground	Always	10 kΩ or higher
E15-8 (FL-) - Body ground	Always	10 kΩ or higher

(g) Measure the resistance between each of the front No. 2 speaker assemblies and body ground to check for a short circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E25-3 (+) - Body ground	Always	10 kΩ or higher
E25-4 (-) - Body ground	Always	10 kΩ or higher
E26-3 (+) - Body ground	Always	10 kΩ or higher
E26-4 (-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.	INSPECT FRONT NO. 3 SPEAKER ASSEMBLY

(a) Remove the front No. 3 speaker assembly (See page ).

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
2 - 3	Always	10 kΩ or higher

Text in Illustration

*a	Component without harness connected (Front No. 3 Speaker Assembly)

REPLACE FRONT NO. 3 SPEAKER ASSEMBLY

12.	REPLACE FRONT NO. 3 SPEAKER ASSEMBLY

(a) Check that the malfunction disappears when a known good speaker is installed (See page ).

OK:

Malfunction disappears.

HINT:

Connect all the connectors to the front No. 3 speaker assemblies that were disconnected.
When there is a possibility that either the right or left front No. 3 speaker assembly is defective, inspect by interchanging the right one with the left one.
Perform the above inspection on both the LH and RH side.

END

13.	INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

(a) Remove the front No. 2 speaker assembly (See page ).

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

Standard Resistance:

for RH:

Tester Connection	Condition	Specified Condition
1 (TWR+) - 2 (TWR-)	Always	1.5 to 2.5 Ω
1 (TWR+) - 3 (+)	Always	Below 1 Ω
2 (TWR-) - 4 (-)	Always	Below 1 Ω

for LH:

Tester Connection	Condition	Specified Condition
1 (TWL+) - 2 (TWL-)	Always	1.5 to 2.5 Ω
1 (TWL+) - 3 (+)	Always	Below 1 Ω
2 (TWL-) - 4 (-)	Always	Below 1 Ω

Text in Illustration

for RH

for LH

Component without harness connected

(Front No. 2 Speaker Assembly)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY

14.	CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)

(a) Disconnect the E12 stereo component amplifier assembly connector.

(b) Disconnect the H1 and I1 front No. 1 speaker assembly connectors.

(c) Measure the resistance between the stereo component amplifier assembly and each of the front No. 1 speaker assemblies to check for an open circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E12-2 (WFR+) - H1-1	Always	Below 1 Ω
E12-6 (WFR-) - H1-2	Always	Below 1 Ω
E12-1 (WFL+) - I1-1	Always	Below 1 Ω
E12-5 (WFL-) - I1-2	Always	Below 1 Ω

(d) Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E12-2 (WFR+) - Body ground	Always	10 kΩ or higher
E12-6 (WFR-) - Body ground	Always	10 kΩ or higher
E12-1 (WFL+) - Body ground	Always	10 kΩ or higher
E12-5 (WFL-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

15.	INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

(a) Remove the front No. 1 speaker assembly (See page ).

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 - 2	Always	1.65 to 2.15 Ω

Text in Illustration

*a	Component without harness connected (Front No. 1 Speaker Assembly)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY

16.	CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 4 SPEAKER ASSEMBLY)

(a) Disconnect the E12 stereo component amplifier assembly connector.

(b) Disconnect the E27 front No. 4 speaker assembly connector.

(c) Measure the resistance between the stereo component amplifier assembly and the front No. 4 speaker assembly to check for an open circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E12-3 (CTR+) - E27-1	Always	Below 1 Ω
E12-9 (CTR-) - E27-2	Always	Below 1 Ω

(d) Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E12-3 (CTR+) - Body ground	Always	10 kΩ or higher
E12-9 (CTR-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

17.	INSPECT FRONT NO. 4 SPEAKER ASSEMBLY

(a) Remove the front No. 4 speaker assembly (See page ).

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 - 2	Always	1.5 to 2.5 Ω

Text in Illustration

*a	Component without harness connected (Front No. 4 Speaker Assembly)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE FRONT NO. 4 SPEAKER ASSEMBLY

18.	CHECK SPEAKER (OPERATION CHECK)

(a) Enter the "System Check Mode" screen.

Refer to Check Speaker in Operation Check (See page ).

(b) Perform the operation check above and determine the speaker that is not operating.

Not Operating Speaker	Proceed to
Rear speaker assembly	A
Rear No. 2 speaker assembly	B
Rear No. 3 speaker assembly	C

HINT:

If sound cannot be heard from any speaker, inspect all of them.

GO TO STEP 21

GO TO STEP 23

19.	CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR SPEAKER ASSEMBLY)

(a) Disconnect the E12 and E15 stereo component amplifier assembly connectors.

(b) Disconnect the J4 and K4 rear speaker assembly connectors.

(c) Measure the resistance between the stereo component amplifier assembly and each of the rear speaker assemblies to check for an open circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E12-8 (RR+) - J4-1	Always	Below 1 Ω
E12-7 (RR-) - J4-2	Always	Below 1 Ω
E15-4 (RL+) - K4-1	Always	Below 1 Ω
E15-11 (RL-) - K4-2	Always	Below 1 Ω

(d) Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E12-8 (RR+) - Body ground	Always	10 kΩ or higher
E12-7 (RR-) - Body ground	Always	10 kΩ or higher
E15-4 (RL+) - Body ground	Always	10 kΩ or higher
E15-11 (RL-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

20.	INSPECT REAR SPEAKER ASSEMBLY

(a) Remove the rear speaker assembly (See page ).

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 - 2	Always	1.5 to 2.2 Ω

Text in Illustration

*a	Component without harness connected (Rear Speaker Assembly)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE REAR SPEAKER ASSEMBLY

21.	CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY)

(a) Disconnect the E12 and E15 stereo component amplifier assembly connectors.

(b) Disconnect the J5 and K5 rear No. 2 speaker assembly connectors.

(c) Measure the resistance between the stereo component amplifier assembly and each of the rear No. 2 speaker assemblies to check for an open circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E12-4 (WF2+) - J5-1	Always	Below 1 Ω
E12-10 (WF2-) - J5-2	Always	Below 1 Ω
E15-5 (WF1+) - K5-1	Always	Below 1 Ω
E15-2 (WF1-) - K5-2	Always	Below 1 Ω

(d) Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E12-4 (WF2+) - Body ground	Always	10 kΩ or higher
E12-10 (WF2-) - Body ground	Always	10 kΩ or higher
E15-5 (WF1+) - Body ground	Always	10 kΩ or higher
E15-2 (WF1-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

22.	INSPECT REAR NO. 2 SPEAKER ASSEMBLY

(a) Remove the rear No. 2 speaker assembly (See page ).

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 - 2	Always	1.5 to 2.5 Ω

Text in Illustration

*a	Component without harness connected (Rear No. 2 Speaker Assembly)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE REAR NO. 2 SPEAKER ASSEMBLY

23.	CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR NO. 3 SPEAKER ASSEMBLY)

(a) Disconnect the E15 stereo component amplifier assembly connector.

(b) Disconnect the M29 and L33 rear No. 3 speaker assembly connectors.

(c) Measure the resistance between the stereo component amplifier assembly and each of the rear No. 3 speaker assemblies to check for an open circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E15-2 (SR+) - M29-1	Always	Below 1 Ω
E15-7 (SR-) - M29-2	Always	Below 1 Ω
E15-1 (SL+) - L33-1	Always	Below 1 Ω
E15-6 (SL-) - L33-2	Always	Below 1 Ω

(d) Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
E15-2 (SR+) - Body ground	Always	10 kΩ or higher
E15-7 (SR-) - Body ground	Always	10 kΩ or higher
E15-1 (SL+) - Body ground	Always	10 kΩ or higher
E15-6 (SL-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

24.	INSPECT REAR NO. 3 SPEAKER ASSEMBLY

(a) Remove the rear No. 3 speaker assembly (See page ).

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 - 2	Always	1.5 to 2.5 Ω

Text in Illustration

*a	Component without harness connected (Rear No. 3 Speaker Assembly)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE REAR NO. 3 SPEAKER ASSEMBLY

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