RM38N0EC _56 Audio / Visual / Telematics _111823 NAVIGATION / MULTI INFO DISPLAY _0502893 NAVIGATION SYSTEM J

NAVIGATION / MULTI INFO DISPLAY  NAVIGATION SYSTEM  AVC-LAN Circuit  


DESCRIPTION

The navigation system communicates with each device via AVC-LAN communication. If a malfunction such as a short in a communication line, short to +B or short to ground occurs in the AVC-LAN circuit, communication will stop and the navigation system will not operate correctly. The malfunctioning device can be identified if the system returns to normal when the malfunctioning device is disconnected from the AVC-LAN circuit.

WIRING DIAGRAM

E541824E01
2.958,2.208 4.938,2.396 1.979,0.188 10 false : AVC-LAN Communication Line 1.01,1.469 1.469,1.667 0.458,0.198 10 false K53 5.094,0.583 5.552,0.781 0.458,0.198 10 false TX1+ 5.052,1.615 6.26,2.063 1.208,0.448 10 false Navigation Receiver Assembly 0.99,1.625 2.198,2.198 1.208,0.573 10 false Stereo Component Amplifier Assembly 5.052,1.469 5.51,1.667 0.458,0.198 10 false E136 5.104,0.979 5.563,1.177 0.458,0.198 10 false TX1- 4.906,0.448 5.104,0.625 0.198,0.177 10 false 1 4.906,0.833 5.104,1.01 0.198,0.177 10 false 2 1.813,0.573 2.271,0.771 0.458,0.198 10 false TX+ 1.823,0.948 2.24,1.156 0.417,0.208 10 false TX- 2.177,0.448 2.375,0.625 0.198,0.177 10 false 8 2.177,0.833 2.375,1.01 0.198,0.177 10 false 7


CAUTION / NOTICE / HINT

NOTICE:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.

Click hereAudio / Visual / Telematics>NAVIGATION / MULTI INFO DISPLAY>NAVIGATION SYSTEM>PRECAUTION


HINT:

The navigation receiver assembly is the master unit.


PROCEDURE

1.DEALER INSTALLED OPTIONAL DEVICES (AVC-LAN COMPATIBLE DEVICES)
a.

Disconnect the connector of each dealer installed optional device (AVC-LAN compatible device) and check if the malfunction continues.


Result:
Result Proceed to
No dealer installed optional devices are installed A
The malfunction reoccurs
The system returns to normal B



A

2.INSPECT NAVIGATION RECEIVER ASSEMBLY

B

REPLACE THE DEVICE (OR WIRE HARNESS)

2.INSPECT NAVIGATION RECEIVER ASSEMBLY
a.

Remove the navigation receiver assembly.


b.
E466873C05
2.531,0.958 2.667,0.417 2.667,0.417 2.833,0.417 true 2.396,0.969 2.615,0.24 2.615,0.24 2.781,0.24 true 0.125,0.094 0.438,0.292 0.313,0.198 10 false *a 2.969,0.354 3.354,0.521 0.385,0.167 10 false TX1+ 2.865,0.115 3.427,0.313 0.563,0.198 10 false TX1-
*a Component without harness connected
(Navigation Receiver Assembly)


Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
1 (TX1+) - 2 (TX1-) Always 60 to 80 Ω



Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (AVC-LAN CIRCUIT)

NG

REPLACE NAVIGATION RECEIVER ASSEMBLY

Click hereAudio / Visual / Telematics>NAVIGATION / MULTI INFO DISPLAY>NAVIGATION RECEIVER>REMOVAL


3.CHECK HARNESS AND CONNECTOR (AVC-LAN CIRCUIT)
a.

Disconnect the E136 navigation receiver assembly connector.


b.

Disconnect the K53 stereo component amplifier assembly connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(K53,E136)Location & Routing

Click Connector(K53)Body>Floor Wire>Stereo Component Amplifier Assembly

Click Connector(E136)Instrument Panel>Instrument Panel Wire / Telephone Computer Wire>Navigation Receiver Assembly

K53-8 (TX+) - E136-1 (TX1+) Always Below 1 Ω
K53-7 (TX-) - E136-2 (TX1-) Always Below 1 Ω
K53-8 (TX+) - Body ground Always 10 kΩ or higher
K53-7 (TX-) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

4.INSPECT NAVIGATION RECEIVER ASSEMBLY (AVC-LAN VOLTAGE)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.INSPECT NAVIGATION RECEIVER ASSEMBLY (AVC-LAN VOLTAGE)
a.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Switch Condition Specified Condition

Click Location & Routing(E136)Location & Routing

Click Connector(E136)Instrument Panel>Instrument Panel Wire / Telephone Computer Wire>Navigation Receiver Assembly

E136-1 (TX1+) - E136-2 (TX1-) Ignition Switch ACC Approximately 0 V
E136-1 (TX1+) - Body ground Ignition Switch ACC Approximately 2.5 V
E136-2 (TX1-) - Body ground Ignition Switch ACC Approximately 2.5 V



Result:
Proceed to
OK
NG



OK

REPLACE NAVIGATION RECEIVER ASSEMBLY

Click hereAudio / Visual / Telematics>NAVIGATION / MULTI INFO DISPLAY>NAVIGATION RECEIVER>REMOVAL


NG

CHECK HARNESS OR CONNECTOR