| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Audio/Visual/Telematics | Section: Navigation/Multi Info Display | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM0000033ZG003X |
| Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: INSPECTION PROCEDURE (2008 Sequoia) | ||
|
Television Display Assembly Communication Error |
INSPECTION PROCEDURE
PROCEDURE
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1. |
IDENTIFY COMPONENT SHOWN BY SUB-CODE |
(a) Enter the diagnostic mode.
(b) Press the "LAN Mon" switch to change to "LAN Monitor" mode.
(c) Identify the component shown by the sub-code.
HINT:
- "140 (navigation receiver)" is the component shown by sub-code in the example shown in the illustration.
- The sub-code will be indicated by its physical address.
-
For the component list, refer to "Diagnosis Display Detailed Description"
.
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2. |
CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE |
(a) Inspect the power source circuit is operating normally, proceed to the next step.
Component Table
|
Component |
Proceed to |
|---|---|
|
Navigation receiver (140) |
Navigation Receiver Assembly Power Source Circuit
|
|
Stereo component amplifier (440) |
Stereo Component Amplifier Power Source Circuit
|
HINT:
If the power source circuit is operating normally, proceed to the next step.
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3. |
INSPECT NAVIGATION RECEIVER ASSEMBLY |
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(a) Disconnect the I20 and I8 navigation receiver assembly connectors. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I20-5 (ATX+) - I20-15 (ATX-) |
Always |
60 to 80 Ω |
|
I8-9 (TXM+) - I8-10 (TXM-) |
(c) Reconnect the navigation receiver assembly connectors.
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4. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER - COMPONENT SHOWN BY SUB-CODE) |
HINT:
- Start the check from the circuit that is near the component shown by the sub-code first.
-
For details of the connectors, refer to "Terminals of ECU"
.
(a) Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the navigation receiver assembly and the component shown by the sub-code.
(1) Disconnect all connectors between the navigation receiver assembly and the components shown by the sub-code.
(b) Check for an open or short in the AVC-LAN circuit between the navigation receiver assembly and the component shown by the sub-code.
OK:
There is no open or short circuit.
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5. |
REPLACE COMPONENT SHOWN BY SUB-CODE |
(a) Replace the component shown by the sub-code with a normal one and check if the same problem occurs again.
OK:
Same problem does not occur.
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