| 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: RM0000019NG057X |
| Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: DESCRIPTION (2008 Sequoia) | ||
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AVC-LAN Circuit |
DESCRIPTION
Each unit of the navigation system connected to the AVC-LAN (communication bus) transfers the signal of each switch by communication.
When a short to +B or short to ground occurs in this AVC-LAN, the navigation system will not function normally as the communication is discontinued.
INSPECTION PROCEDURE
PROCEDURE
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1. |
CHECK NAVIGATION RECEIVER ASSEMBLY |
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(a) Disconnect the I20 and I8* navigation receiver assembly connectors. HINT:
*: w/ Rear Seat Entertainment System |
(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-)* |
HINT:
*: w/ Rear Seat Entertainment System
(c) Reconnect the navigation receiver assembly connector.
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2. |
CHECK HARNESS AND CONNECTOR |
HINT:
For details of the connectors, refer to "Terminals of ECU"
.
(a) Referring to the AVC-LAN wiring diagram below, check all AVC-LAN circuits.
(1) Disconnect all connectors in all AVC-LAN circuits.
(2) Check for an open or short in all AVC-LAN circuits.
OK:
There is no open or short circuit.
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