2001 TOYOTA SEQUOIA front speakers

I36938I28293
Stereo Component Amplifier Assy:
RR+
FL+RL+
WFL+
RR±FL±
RL± WFL± WFR±
WFR+
FR± FR+
S9
I28355
Rear Speaker Connector Front View:
R10
R9
I28757
Front Door Speaker Assy and Woofer
Connector Front View:
F14
F15
I28758
Tweeter Connector Front View:
T12
T13
± DIAGNOSTICSAUDIO SYSTEM
DI±2017
2211 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check harness and connector (Stereo component amplifier assy ± Speaker
assy).
PREPARATION:
Disconnect the connectors from the radio receiver assy and
speakers.
CHECK:
Measure the resistance between the speaker and the stereo
component amplifier to check for an open circuit in the wire har-
ness.
OK:
Below 1 W
CHECK:
Measure the resistance between each speaker and body
ground to check for a short circuit in wire harness.
OK:
10 kW or higher
HINT:
Refer to the wiring diagram for connection of each terminal.
NG Repair or replace harness or connector.
OK

I28759
Front Door Speaker Assy and Woofer
Connector Front View:
F14
F15
DI±2018
± DIAGNOSTICSAUDIO SYSTEM
2212 Author: Date:
2005 SEQUOIA (RM1146U)
3 Inspect front door speaker and woofer.
CHECK:
Measure the resistance according to the value(s) in the table
below.
NOTICE:
The speaker should not be removed for checking.
OK:
Tester connectionSpecified condition
1 ± 2Approx. 3.15 W
3 ± 4Approx. 2.78 W
NG Replace front door speaker and woofer.
OK
4 Inspect tweeter.
CHECK:
Check that malfunction disappears when another tweeter in good condition is installed.
OK:
Malfunction disappears.
HINT:

Connect all the connectors to the speakers.

When there is a possibility that either right or left front speaker is defective, inspect by interchanging
the right one and the left one.
OK Replace tweeter.
NG

I28754
Radio Receiver Assy
Wire Harness View:
FL±
FL+
FR+ RR±
RL±
RR+RL+
R2R3
FR±
I28355
Front Door Speaker Assy and Rear
Speaker Connector Front View:
F17
F16
R9
R10
I28758
Tweeter Assy Connector Front View:
T12
T13
DI±2020
± DIAGNOSTICSAUDIO SYSTEM
2214 Author: Date:
2005 SEQUOIA (RM1146U)
6 Check harness and connector (Radio receiver assy ± Speaker assy).
PREPARATION:
Disconnect the connectors from the radio receiver assy and
speakers.
CHECK:
Measure the resistance between the speaker and the radio re-
ceiver assy to check for an open circuit in the wire harness.
OK:
Below 1 W
CHECK:
Measure the resistance between each speaker and body
ground to check for a short circuit in wire harness.
OK:
10 kW or higher
HINT:
Refer to the wiring diagram for connection of each terminal.
NG Repair or replace harness or connector.
OK

± DIAGNOSTICSAUDIO SYSTEM
DI±2021
2215 Author: Date:
2005 SEQUOIA (RM1146U)
7 Inspect front door speaker assy.
CHECK:
Measure the resistance between the terminals of the speaker.
NOTICE:
The speaker should not be removed for checking.
OK:
Approximately 4 W
NG Replace front door speaker assy.
OK
8 Inspect tweeter assy.
CHECK:
Check that malfunction disappears when another tweeter in good condition is installed.
OK:
Malfunction disappears.
HINT:

Connect all the connectors to the speakers.

When there is a possibility that either right or left front speaker is defective, inspect by interchanging
the right one and the left one.
OK Replace tweeter.
NG

DIDAT±01
I27728
Radio and Navigation Assy (*1)
Radio Receiver Assy (*2)
Rear Door
SpeakerSteering Pad Switch
Instrument Panel J/B

RAD NO. 2 Fuse

ECU±B Fuse

AM1 FuseEngine Room J/B

RAD NO. 1 Fuse

RAD NO. 3 Fuse
Ignition Switch
Headphone
Terminal
Front Door
Speaker and
Woofer
Stereo Component Amplifier
Multi±display
Controller
Sub±assy
*1: w/ Navigation System
*2: w/o Navigation SystemVTR TerminalDisc Player
Controller
Rear Door
Speaker
Front Door
Speaker and
Woofer
Tweeter
Television Display Assy
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2079
2273 Author: Date:
2005 SEQUOIA (RM1146U)
LOCATION

I28757
F14 Front Door Speaker
Connector Front View:
I28758
T12 Tweeter Connector front View:
DI±2278
± DIAGNOSTICSNAVIGATION SYSTEM
2472 Author: Date:
2005 SEQUOIA (RM1146U)
3 Inspect tweeter.
CHECK:
Check that the malfunction disappears when another tweeter in good condition is installed.
OK:
Malfunction disappears.
HINT:

Connect all the connectors to the speakers.

When there is a possibility that either right or left front speaker is defective, inspect by interchanging
the right one with the left one.
OK Replace tweeter.
NG
4 Check harness and connector (Front door speaker ± tweeter).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester connectionConditionSpecified condition
F14±1 ± T12±3AlwaysBelow 1 W
F14±2 ± T12±4AlwaysBelow 1 W
F14±1 ± Body groundAlways10 kW or higher
F14±2 ± Body groundAlways10 kW or higher
NG Repair or replace harness or connector.
NG
Proceed to next circuit inspection shown on problem symptoms table (See page DI±2184).

I28759
F14
Connector Front View:
± DIAGNOSTICSNAVIGATION SYSTEM
DI±2279
2473 Author: Date:
2005 SEQUOIA (RM1146U)
5 Inspect front door speaker assy.
PREPARATION:
Disconnect the speaker connector.
CHECK:
Measure the resistance between the terminals of the speaker.
NOTICE:
The speaker should not be removed for checking.
OK:
Tester connectionSpecified condition
1 ± 2Approx. 3.15 W
3 ± 4Approx. 2.78 W
NG Replace front door speaker.
OK
6 Inspect tweeter.
CHECK:
Check that the malfunction disappears when another tweeter in good condition is installed.
OK:
Malfunction disappears.
HINT:

Connect all the connectors to the speakers.

When there is a possibility that either right or left front speaker is defective, inspect by interchanging
the right one with the left one.
OK Replace tweeter.
NG

I36938I28293
Stereo Component Amplifier Assy
Wire Harness View:
RR+
FL+RL+
WFL+
RR±FL±
RL± WFL± WFR±
WFR+
FR± FR+
S9
I28355
Rear Speaker Connector Front View:
R10
R9
I28757
Front Door Speaker Assy and Woofer
Connector Front View:
F14
F15
I28758
Tweeter Connector Front View:
T12
T13
DI±2284
± DIAGNOSTICSNAVIGATION SYSTEM
2478 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check harness and connector (Stereo component amplifier assy ± speaker
assy).
PREPARATION:
Disconnect the connectors from the stereo component amplifi-
er assy and speakers.
CHECK:
Measure the resistance between the speaker and the stereo
component amplifier to check for an open circuit in the wire har-
ness.
OK:
Below 1 W
CHECK:
Measure the resistance between the speaker and body ground
to check for a short circuit in wire harness.
OK:
10 kW or higher
NG Repair or replace harness or connector.
OK