- Harness and connector
- Speaker
- Stereo component amplifier assembly
| Last Modified: 11-29-2007 | 1.6 C | |
| Service Category: Audio/Visual/Telematics | Section: Audio/Video | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000001YQB01GX |
| Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
DTC |
74-40 |
Short in Speaker Circuit |
DESCRIPTION
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
74-40 |
A short is detected in the speaker output circuit. |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
After the inspection is completed, clear the DTCs.
PROCEDURE
|
1. |
CHECK DTC |
(a) Disconnect the I18 and I19 stereo component amplifier assembly connectors.
(b) Clear the DTC.
(c) Check if DTC 74-40 is output.
OK:
DTC 74-40 is not output.
|
|
2. |
CHECK DTC |
(a) Reconnect the I18 stereo component amplifier assembly connector.
(b) Check if DTC 74-40 is output.
OK:
DTC 74-40 is not output.
|
|
3. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - SPEAKER) |
|
(a) Disconnect the I19 stereo component amplifier assembly connector. |
(b) Disconnect the N2*1, N8*2, I10*1 and I12*2 speaker connectors.
HINT:
*1: for RH Side
*2: for LH Side
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I19-6(WF1-) - Body ground |
Always |
10 kΩ or higher |
|
I19-1(WF1+) - Body ground |
||
|
I19-12(RR-) - Body ground |
||
|
I19-5(RR+) - Body ground |
||
|
N2-2(-) - Body ground |
||
|
N2-4(+) - Body ground |
||
|
I19-7(SR-) - Body ground |
||
|
I19-2(SR+) - Body ground |
||
|
I19-11(RL-) - Body ground |
||
|
I19-4(RL+) - Body ground |
||
|
N8-2(-) - Body ground |
||
|
N8-4(+) - Body ground |
||
|
I19-9(FR-) - Body ground |
||
|
I19-10(FR+) - Body ground |
||
|
I10-2(-) - Body ground |
||
|
I10-1(+) - Body ground |
||
|
I19-8(FL-) - Body ground |
||
|
I19-3(FL+) - Body ground |
||
|
I12-2(-) - Body ground |
||
|
I12-1(+) - Body ground |
(d) Reconnect the stereo component amplifier assembly connector.
(e) Reconnect the speaker connectors.
|
|
4. |
INSPECT REAR NO. 1 SPEAKER ASSEMBLY RH |
|
(a) Disconnect the N1 speaker connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
1.8 to 2.6 Ω |
(c) Reconnect the speaker connector.
|
|
5. |
INSPECT REAR NO. 2 SPEAKER ASSEMBLY RH |
|
(a) Disconnect the N2 speaker connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 3 |
Always |
3.0 to 4.2 Ω |
|
1 - 2 |
Always |
Below 1 Ω |
|
3 - 4 |
(c) Reconnect the speaker connector.
|
|
6. |
INSPECT QUARTER SIDE SPEAKER ASSEMBLY RH |
(a) Disconnect the O37 speaker connector.
(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 |
(c) Reconnect the speaker connector.
|
|
7. |
INSPECT REAR NO. 1 SPEAKER ASSEMBLY LH |
(a) Disconnect the N7 speaker connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
1.8 to 2.6 Ω |
(c) Reconnect the speaker connector.
|
|
8. |
INSPECT REAR NO. 2 SPEAKER ASSEMBLY LH |
|
(a) Disconnect the N8 speaker connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 3 |
Always |
3.0 to 4.2 Ω |
|
1 - 2 |
Always |
Below 1 Ω |
|
3 - 4 |
(c) Reconnect the speaker connector.
|
|
9. |
INSPECT FRONT NO. 3 SPEAKER ASSEMBLY RH |
|
(a) Disconnect the L1 speaker connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 3 |
Always |
3.0 to 4.2 Ω |
(c) Reconnect the speaker connector.
|
|
10. |
INSPECT FRONT NO. 2 SPEAKER ASSEMBLY RH |
|
(a) Disconnect the I10 speaker connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3 - 4 |
Always |
1.5 to 2.5 Ω |
|
2 - 4 |
Always |
Below 1 Ω |
|
1 - 3 |
(c) Reconnect the speaker connector.
|
|
11. |
INSPECT FRONT NO. 3 SPEAKER ASSEMBLY LH |
|
(a) Disconnect the M1 speaker connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 3 |
Always |
3.0 to 4.2 Ω |
(c) Reconnect the speaker connector.
|
|
12. |
INSPECT FRONT NO. 2 SPEAKER ASSEMBLY LH |
|
(a) Disconnect the I12 speaker connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3 - 4 |
Always |
1.5 to 2.5 Ω |
|
2 - 4 |
Always |
Below 1 Ω |
|
1 - 3 |
(c) Reconnect the speaker connector.
|
|
13. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - SPEAKER) |
|
(a) Disconnect the I18 stereo component amplifier assembly connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I18-7(SL-) - Body ground |
Always |
10 kΩ or higher |
|
I18-8(SL+) - Body ground |
||
|
I18-9(CTR-) - Body ground |
||
|
I18-3(CTR+) - Body ground |
||
|
I18-10(WF2-) - Body ground |
||
|
I18-4(WF2+) - Body ground |
||
|
I18-6(WFR-) - Body ground |
||
|
I18-2(WFR+) - Body ground |
||
|
I18-5(WFL-) - Body ground |
||
|
I18-1(WFL+) - Body ground |
(c) Reconnect the stereo component amplifier assembly connector.
|
|
14. |
INSPECT QUARTER SIDE SPEAKER ASSEMBLY LH |
|
(a) Disconnect the O31 speaker connector. |
(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 |
(c) Reconnect the speaker connector.
|
|
15. |
INSPECT FRONT NO. 1 SPEAKER ASSEMBLY RH |
|
(a) Disconnect the L8 speaker connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
1.8 to 2.6 Ω |
(c) Reconnect the speaker connector.
|
|
16. |
INSPECT FRONT NO. 1 SPEAKER ASSEMBLY LH |
|
(a) Disconnect the M10 speaker connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
1.8 to 2.6 Ω |
(c) Reconnect the speaker connector.
|
|
17. |
INSPECT FRONT NO. 4 SPEAKER ASSEMBLY |
|
(a) Disconnect the I14 speaker connector. |
(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 2.1 Ω |
(c) Reconnect the speaker connector.
|
|
|