Last Modified: 4-30-2014 6.6 D Doc ID: RM00000102A003X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: NAVIGATION: NAVIGATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2006 MY LX470 [05/2005 -        ]

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

  • Use these procedures to troubleshoot the navigation system.
  • *: Use the intelligent tester.

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.

INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)*

(a) Use the intelligent tester to check if the Multiplex Communication System (MPX) is functioning normally.

Result

Proceed to

MPX DTC is not output

A

MPX DTC is output

B
B

Go to MULTIPLEX COMMUNICATION SYSTEM
A

4.

BASIC INSPECTION

(a) Turn the ignition switch to ACC.

(b) Check whether or not the display appears on the radio receiver.

Result

Result

Proceed to

Display appears

A

Display does not appear

B
B

PROCEED TO PROBLEM SYMPTOMS TABLE
A

5.

CHECK FOR DTC

(a) Check for DTCs and note any codes that are output.

(b) Delete the DTC.

(c) Recheck for DTCs. Based on the DTC output in (a), try to force output of the audio system DTC by simulating the operation indicated by the DTC.

Result

Result

Proceed to

DTC does not reoccur

A

DTC reoccurs

B
B

Go to step 8
A

6.

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 8
A

7.

OVERALL ANALYSIS AND TROUBLESHOOTING

(a) Terminals of ECU 2006 MY LX470 [05/2005 -        ]; NAVIGATION: NAVIGATION SYSTEM: TERMINALS OF ECU

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8.

ADJUST, REPAIR OR REPLACE
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END