Toyota RAV4 manuals

Toyota Sienna Service Manual: Speaker Circuit

DESCRIPTION

The sound signal that has been amplified by the stereo component amplifier is sent to the speakers from the stereo component amplifier through this circuit.

If there is a short in this circuit, the stereo component amplifier 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 or speakers.

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

WIRING DIAGRAM

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 CHECK HARNESS AND CONNECTOR

CHECK HARNESS AND CONNECTOR

  1. Disconnect the connectors shown in the illustration on the left from the stereo component amplifier and speakers.
  2.  Measure the resistance between the front No. 2 speakers and the stereo component amplifier to check for an open circuit in the wire harness.

    Standard resistance: Below 1 Ω

  3.  Measure the resistance between rear speakers and the stereo component amplifier to check for an open circuit in the wire harness.

    Standard resistance: Below 1 Ω

  4.  Measure the resistance between the front stereo component speaker and the stereo component amplifier to check for an open circuit in the wire harness.

    Standard resistance: Below 1 Ω

  5.  Measure the resistance between the woofer box speaker and the stereo component amplifier to check for an open circuit in the wire harness.

    Standard resistance: Below 1 Ω

  6.  Measure the resistance between the front No. 1 speaker and the front No. 2 speaker to check for an open circuit in the wire harness.

    Standard resistance: Below 1 Ω

  7.  Measure the resistance between the rear stereo component speaker and the stereo component amplifier to check for an open circuit in the wire harness.

    Standard resistance: Below 1 Ω

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

    Standard resistance: 10 kΩ or higher

2 INSPECT WOOFER BOX SPEAKER

INSPECT WOOFER BOX SPEAKER

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

NOTICE: The speaker should not be removed for checking.

Standard resistance

Standard resistance

INSPECT FRONT NO. 1 SPEAKER

  1. Resistance check.
  1. Measure the resistance between the terminals of the speaker.

Standard resistance: 4 to 6 Ω

4 INSPECT FRONT NO. 2 SPEAKER

  1. Check that the malfunction disappears when another speaker in good condition is installed.

OK: Malfunction disappears.

HINT:

5 INSPECT REAR SPEAKER

  1. Resistance check.
  1.  Measure the resistance between the terminals of the speaker.

Standard resistance: Approximately 2.6 Ω

6 INSPECT FRONT STEREO COMPONENT SPEAKER

  1. Resistance check.
  1.  Measure the resistance between the terminals of the speaker.

Standard resistance: 1.2 to 2.2 Ω

7 INSPECT REAR STEREO COMPONENT SPEAKER

  1. Check that the malfunction disappears when another speaker in good condition is installed.

OK: Malfunction disappears.

HINT:

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

Parking Brake Switch Circuit
DESCRIPTION This circuit is from the parking brake switch to the radio and navigation assembly. WIRING DIAGRAM INSPECTION PROCEDURE 1 CHECK BRAKE WARNING LIGHT Check that the brake warni ...

Sound Signal Circuit between Radio and Navigation Assembly and Television Display Assembly
DESCRIPTION The television display assembly sends an RSE sound signal to the radio and navigation assembly through this circuit. The sound signal that has been sent is amplified by the stereo co ...

Other materials:

Personal light assembly
ON-VEHICLE INSPECTION 1. ROOF CONSOLE BOX ASSEMBLY  Inspect map light assembly resistance.  Check the resistance between the terminals at each switch position as shown in the chart. Resistance ...

Removal
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 2. REMOVE FRONT BUMPER ASSEMBLY Remove the 4 screws and separate the fender liner from the front bumper assembly. Remove the 8 screws and separate the engine under cover from the front bumper assembly. Remove the 5 ...

Microphone Circuit between Microphone and Radio and Navigation Assembly
DESCRIPTION This circuit sends a microphone signal from the microphone to the radio and navigation assembly. It also supplies power from the radio and navigation assembly to the microphone. WIRING DIAGRAM INSPECTION PROCEDURE 1 INSPECT RADIO AND NAVIGATION ASSEMBLY Measure the v ...

В© 2011-2022 Copyright www.tsienna.net