| Last Modified: 11-29-2007 | 1.6 D | |
| Service Category: Audio/Visual/Telematics | Section: Navigation/Multi Info Display | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM00000102A02SX |
| Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 Sequoia) | ||
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
Use these procedures to troubleshoot the navigation system.
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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2. |
INSPECT BATTERY VOLTAGE |
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
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3. |
BASIC INSPECTION |
(a) Turn the ignition switch to ACC.
(b) Check whether or not the display appears on the navigation receiver assembly.
Result
|
Result |
Proceed to |
|---|---|
|
Display appears |
A |
|
Display does not appear |
B |
| B |
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Go to step 6 |
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4. |
CHECK FOR DTC |
(a) Check for DTCs and note any codes that are output
.
(b) Clear for DTC.
(c) Recheck for DTCs. Based on the DTC output in the first step, try to force output of the navigation system DTC by simulating the operation indicated by the DTC.
HINT:
- If the system cannot enter the diagnosis mode, inspect each AVC-LAN communication signal and repair or replace problem parts.
- Even if the malfunction symptom is not confirmed, check for DTCs. This is because the system stores past DTCs.
-
Refer to the detailed description on the diagnostic screen, as necessary
.
- Check and clear past diagnostic trouble codes. Check the diagnostic trouble code and inspect the area the code indicates.
Result
|
Result |
Proceed to |
|---|---|
|
DTC does not reoccur |
A |
|
DTC reoccurs |
B |
| B |
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Go to step 7 |
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5. |
PROBLEM SYMPTOMS TABLE |
Result
|
Result |
Proceed to |
|---|---|
|
Fault is not listed in Problem Symptoms Table |
A |
|
Fault is listed in Problem Symptoms Table |
B |
| B |
|
Go to step 7 |
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6. |
OVERALL ANALYSIS AND TROUBLESHOOTING |
(a) Terminals of ECU
.
(b) Inspect the steering pad switch assembly
.
(c) Inspect the front No. 1 speaker assembly
.
(d) Inspect the front No. 2 speaker assembly
.
(e) Inspect the front No. 3 speaker assembly
.
(f) Inspect the front No. 4 speaker assembly
.
(g) Inspect the rear No. 1 speaker assembly
.
(h) Inspect the rear No. 2 speaker assembly
.
(i) Inspect the quarter side speaker assembly
.
(j) Inspect the w/ box No. 1 speaker assembly
.
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7. |
ADJUST, REPAIR OR REPLACE |
| NEXT |
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END |
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