Navigation. Navigation System Speaker Circuit

Body Electrical. Camry. Acv40 Gsv40

Navigation. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR

INSPECT FRONT NO. 1 SPEAKER

INSPECT FRONT NO. 2 SPEAKER

INSPECT REAR SPEAKER

NAVIGATION SYSTEM - Speaker Circuit

DESCRIPTION

If there is a short in this 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.
If a short is detected in the speaker circuit, no sound can be heard from the speakers.

WIRING DIAGRAM

Camry. Acv40 Gsv40.Navigation.Navigation System.Navigation System Speaker Circuit

INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR

Disconnect the navigation receiver assembly connector.

Disconnect the navigation receiver assembly connector.

Disconnect the front No. 1 speaker connectors.

Disconnect the front No. 2 speaker connectors.

Disconnect the rear speaker connectors.

Measure the resistance between each of the front No. 2 speakers and the navigation receiver assembly to check for an open circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F27-2 (FL+) - F21-2 (TWL+)	Always	Below 1 Ω
F27-6 (FL-) - F21-4 (TWL-)	Always	Below 1 Ω
F27-1 (FR+) - F23-2 (TWR+)	Always	Below 1 Ω
F27-5 (FR-) - F23-4 (TWR-)	Always	Below 1 Ω

Measure the resistance between each of the front No. 2 speakers and the front No. 1 speakers to check for an open circuit in the wire harness.
Standard Resistance:
Tester Connection
Condition
Specified Condition
F21-1 (+) - I1-1
Always
Below 1 Ω
F21-3 (-) - I1-2
Always
Below 1 Ω
F23-1 (+) - H1-1
Always
Below 1 Ω
F23-3 (-) - H1-2
Always
Below 1 Ω

Measure the resistance between each of the rear speakers and the navigation receiver assembly to check for an open circuit in the wire harness.
Standard Resistance:
Tester Connection
Condition
Specified Condition
F28-2 (RL+) - O12-1
Always
Below 1 Ω
F28-6 (RL-) - O12-2
Always
Below 1 Ω
F28-1 (RR+) - O13-1
Always
Below 1 Ω
F28-3 (RR-) - O13-2
Always
Below 1 Ω

Measure the resistance between each speaker and body ground to check for a short circuit in the wire harness.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F21-1 (+) - Body ground	Always	10 kΩ or higher
F21-3 (-) - Body ground	Always	10 kΩ or higher
F21-2 (TWL+) - Body ground	Always	10 kΩ or higher
F21-4 (TWL-) - Body ground	Always	10 kΩ or higher
F23-1 (+) - Body ground	Always	10 kΩ or higher
F23-3 (-) - Body ground	Always	10 kΩ or higher
F23-2 (TWR+) - Body ground	Always	10 kΩ or higher
F23-4 (TWR-) - Body ground	Always	10 kΩ or higher
O12-1 - Body ground	Always	10 kΩ or higher
O12-2 - Body ground	Always	10 kΩ or higher
O13-1 - Body ground	Always	10 kΩ or higher
O13-2 - Body ground	Always	10 kΩ or higher

Text in Illustration
*1	Front view of wire harness connector (to Navigation Receiver Assembly)
*2	Front view of wire harness connector (to Navigation Receiver Assembly)
*3	Front view of wire harness connector (to Front No. 1 Speaker)
*4	Front view of wire harness connector (to Front No. 2 Speaker)
*5	Front view of wire harness connector (to Rear Speaker)

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.INSPECT FRONT NO. 1 SPEAKER

Resistance check
1. Measure the resistance between the terminals of the speaker.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  I1-1 - I1-2
  Always
  3.4 to 4.6 Ω
  H1-1 - H1-2
  Always
  3.4 to 4.6 Ω
  NOTICE:
  The speaker should not be removed to check resistance.
  Text in Illustration
  *1
  Component without harness connected
  (Front No. 1 Speaker)

Text in Illustration
*1	Component without harness connected (Front No. 1 Speaker)

REPLACE FRONT NO. 1 SPEAKER (CAMRY_ACV40 RM0000026JS00PX.html)

OK

3.INSPECT FRONT NO. 2 SPEAKER

Resistance check

Measure the resistance between the terminals of the speaker.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F21-1 (+) - F21-2 (TWL+)	Always	Below 1 Ω
F21-3 (-) - F21-4 (TWL-)	Always	Below 1 Ω
F23-1 (+) - F23-2 (TWR+)	Always	Below 1 Ω
F23-3 (-) - F23-4 (TWR-)	Always	Below 1 Ω

NOTICE:

The speaker should not be removed to check resistance.

Text in Illustration
*1	Component without harness connected (Front No. 2 Speaker)

Check that the malfunction disappears when another speaker in good condition is installed.
Standard:
Malfunction disappears.
HINT:
1. Connect all the connectors to the front No. 2 speakers.
2. If 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.

Go to step 4

REPLACE FRONT NO. 2 SPEAKER (CAMRY_ACV40 RM0000026JS00PX.html)

4.INSPECT REAR SPEAKER

Resistance check
1. Measure the resistance between the terminals of the speaker.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  O12-1 - O12-2
  Always
  3.2 to 4.8 Ω
  O13-1 - O13-2
  Always
  3.2 to 4.8 Ω
  NOTICE:
  The speaker should not be removed to check resistance.
  Text in Illustration
  *1
  Component without harness connected
  (Rear Speaker)

Text in Illustration
*1	Component without harness connected (Rear Speaker)

REPLACE REAR SPEAKER (CAMRY_ACV40 RM0000026JV00OX.html)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (CAMRY_ACV40 RM0000011BR045X.html)

Tester Connection	Condition	Specified Condition
I1-1 - I1-2	Always	3.4 to 4.6 Ω
H1-1 - H1-2	Always	3.4 to 4.6 Ω