| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000026LAW |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [09/2022 - 11/2022] |
| Title: CELLULAR COMMUNICATION: TOYOTA AUDIO MULTIMEDIA SYSTEM (for TMMMS Made): "No GPS signal" mark is displayed; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022] | ||
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"No GPS signal" mark is displayed |
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 Audio and Visual System*1 or Navigation System*2.
w/o Navigation System: Click here
![2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Gasoline Model with Dual Knob Type): PRECAUTION](/t3Portal/stylegraphics/info.gif)
w/ Navigation System : Click here
- *1: w/o Navigation System
- *2: w/ Navigation System
PROCEDURE
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1. |
CHECK CABIN |
(a) Check the cabin for any objects that might interrupt radio reception and devices which use radio waves on the instrument panel. If such an object exists, remove it and check if the GPS mark reappears.
HINT:
The GPS uses extremely faint radio waves originating from satellites. If the signal is interrupted by obstructions or other radio waves, the GPS may not be able to properly receive the signal.
OK:
The GPS mark appears.
| OK |
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END |
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2. |
CHECK SURROUNDINGS |
(a) Check if the vehicle is in a location where GPS signal reception is poor. If the vehicle is in such a place, relocate the vehicle and check if the GPS mark reappears.
HINT:
The GPS uses 24 satellites in 6 orbits. At any point in time, 4 satellites should be able to pinpoint your vehicle. However, GPS signals may not reach the vehicle due to influence from the surroundings, vehicle direction and time. For examples, see the following illustration.
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*a |
Example |
*b |
In a tunnel |
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*c |
In a building |
*d |
Under an overpass |
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*e |
In a forest or on tree-lined path |
*f |
Between tall buildings |
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*g |
Under a cliff or overhang |
- |
- |
OK:
The GPS mark is displayed.
| OK |
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END (SYSTEM RETURNED TO NORMAL) |
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3. |
CHECK GPS INFORMATION (OPERATION CHECK) |
(a) Enter the "System Sensors Check" screen. Refer to Check GPS & Vehicle Sensors in Operation Check.
w/o Navigation System
w/ Navigation System
w/o Navigation System: Click here
w/ Navigation System : Click here
(b) Check how many of the following codes appear in the "Reception number".
HINT:
T or P appears.
OK:
At least 3 codes appear.
| OK |
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| NG |
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PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
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