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Home >> Toyota >> 2004 >> Tundra Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 484 (Navigation System - Diagnostics) >> Navigation System >> Circuit Inspection >> Vehicle position mark deviates greatly >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Tundra and 2005 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check GPS mark. 

    CHECK: 

    Check that the GPS mark is displayed.

    OK: 

    The GPS mark is displayed. 

    Fig 1: Checking GPS Mark
    G02644211Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG : Go to "GPS mark is not displayed" in flow chart (See  GPS MARK IS NOT DISPLAYED   ). 
    2. OK : GO TO NEXT STEP 
  2. Navigation check mode (Vehicle sensors check). 

    PREPARATION: 

    Enter the NAVIGATION CHECK MODE (VEHICLE SENSORS)  .

    CHECK: 

    While driving, compare the "SPD" indicator to the reading on the speedometer. Check that these readings are almost the same.

    OK: 

    The readings are almost the same. 

    Fig 2: Identifying Navigation Check Mode (Vehicle Sensors Check)
    G02644212Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG : Go to "speed signal circuit" in flow chart (See  Speed signal circuit   ). 
    2. OK : Go to next Step. 
  3. Navigation check mode (Vehicle sensors check). 

    CHECK: 

    Check the "REV" display according to the table below.

    OK: 

    SHIFT LEVER POSITION

    Shift lever Display
    R ON
    Any position except R OFF
    Fig 3: Identifying Navigation Check Mode (Vehicle Sensors Check)
    G02644213Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    The display is updated once per second. As a result, it is normal for the display to lag behind the actual change in the switch.

    1. NG : Go to "reverse signal circuit" in flow chart (See  Reverse signal circuit   ). 
    2. OK: Proceed to next circuit inspection shown in  PROBLEM SYMPTOMS TABLE   .