Inspection Procedure 5: GPS signal cannot be received.
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Whenever the multivision display is replaced, ensure that the power supply circuit and the earthing circuit are normal. (Check that the voltage is 10 V or more.)
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COMMENTS ON TROUBLE SYMPTOM
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The GPS antenna or the multivision display may be defective.
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- Malfunctions of GPS antenna
- Malfunctions of multivision display
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STEP 1. Confirmation in MMCS service mode
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Perform "Communications & Connection Check" in the MMCS service mode to check that the communication and wire connection with the GPS antenna are OK. (Refer to .)
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Q.
Is the check result normal?
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Go to Step 2.
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Go to Step 4.
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STEP 2. Check for the vehicle’s current position.
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Check that the vehicle is parked on a well-ventilated place.
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Q.
Is the vehicle parked on a well-ventilated place?
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Go to Step 3.
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Move the vehicle to a well-ventilated area.
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STEP 3. Confirming GPS signal reception
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(1)Start the multivision display.
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(2)Press the "INFO" button.
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(3)Select "GPS Information".
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(4)Wait for 5 minutes, and then check whether GPS signal can be received.
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Q.
Can GPS signal be received?
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The diagnosis is complete. (There is no failure)
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Go to Step 4.
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STEP 4. Substitute a known good multivision display, and check the trouble symptom.
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(1)Temporarily replace the multivision display.
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(2)Start the multivision display.
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(3)Press the "INFO" button.
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(4)Select "GPS Information".
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(5)Check if the GPS signals are being received after 5 minutes have elapsed.
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Q.
Is the check result normal?
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Replace the multivision display.
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Replace the GPS antenna.
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