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 |
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.
B |
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.
(c) Disconnect the H1 and I1 front No. 1 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 |
NG |
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:
|
|
NG |
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:
|
|
NG |
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:
OK |
END |
NG |
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 |
NG |
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:
|
|
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG |
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.
B |
GO TO STEP 14 |
C |
GO TO STEP 16 |
D |
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.
(c) Disconnect the E23 and E24 front No. 3 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 |
NG |
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:
|
|
NG |
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:
OK |
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:
|
|
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG |
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 |
NG |
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:
|
|
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG |
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 |
NG |
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:
|
|
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG |
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.
B |
GO TO STEP 21 |
C |
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 |
NG |
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:
|
|
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG |
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 |
NG |
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:
|
|
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG |
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 |
NG |
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:
|
|
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG |
REPLACE REAR NO. 3 SPEAKER ASSEMBLY |
Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL NO. 14 ROOF SILENCER PAD
(a) Align the markings on the roof headlining assembly with the No. 14 roof silencer
pad and install the silencer pad using hot-melt glue as shown in the illustration.
2. INSTALL NO. 1 ROOF WIRE ...
ACC Signal Circuit
DESCRIPTION
This circuit detects the ignition switch ACC or off condition, and sends it to
the main body ECU (driver side junction block assembly).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system ...
Vehicle Speed or Engine Speed Signal Malfunction (C2173/73)
DESCRIPTION
The tire pressure warning ECU receives a vehicle speed signal from the combination
meter and an engine speed signal from the ECM. The tire pressure warning ECU uses
these signals to detect DTCs C2121/21 to C2124/24 (No Signal from Transmitter) ...