Inspection Procedure 7: GPS Signal can not be Received.




COMMENTS ON TROUBLE SYMPTOM


The GPS antenna or the audio visual navigation unit may be defective.

PROBABLE CAUSES




DIAGNOSIS PROCEDURE


STEP 1. Confirmation in MMCS service mode


Perform "Network/Connect Line Check" in the MMCS service mode to check that the communication and wire connection with the GPS antenna are OK (Refer to ).

Q. Is the check result normal?

Go to Step 2.
Go to Step 4.

STEP 2. Check for the vehicle’s current position.


Check that the vehicle is parked on a well-ventilated place.

Q. Is the vehicle parked on a well-ventilated place?

Go to Step 3.
Move the vehicle to a well-ventilated area.

STEP 3. Confirming GPS signal reception


(1)Turn the ignition switch to the "ACC" position.
(2)Wait for 15 minutes, and then check whether GPS signal can be received.

Q. Can GPS signal be received?

The diagnosis is complete (There is no failure).
Go to Step 4.

STEP 4. Substitute a known good GPS antenna, and check the trouble symptom.


When a known good GPS antenna is substituted, check whether GPS signal can be received.

Q. Is the check result normal?

Replace the GPS antenna.
Replace the audio visual navigation unit.