Pinpoint Test K: No Global Positioning System (GPS) Antenna Signal

Information and Entertainment System

Pinpoint Tests

Pinpoint Test K: No Global Positioning System (GPS) Antenna Signal

Normal Operation

The Global Positioning System (GPS) antenna provides information from the GPS satellite system to the GPS receiver in the Audio Control Module (ACM). This information is used to calculate vehicle position and direction of travel.

- DTC B2204 (GPS Antenna Connection Open or Short) - sets when an open, short to ground, or short to voltage is detected in the ACM antenna circuit.

This pinpoint test is intended to diagnose the following:

- GPS antenna
- ACM



PINPOINT TEST K: NO GPS ANTENNA SIGNAL

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K1 CHECK THE OPERATION OF THE NAVIGATION SYSTEM


- Move the vehicle outside of any enclosed structure to an area that is unobstructed by trees, tall buildings, and bridges.
- Operate the audio system in navigation mode.




- Does the GPS icon appear, then disappear?

Yes
The system is operating correctly at this time. NOTIFY the customer that obstructions to the line of sight may affect the GPS antenna.

No
GO to K2.

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K2 CHECK THE ACM RECORDED DTCs


- Check the recorded DTCs from the ACM self-test.
- Is DTC B2204 recorded?

Yes
GO to K4.

No
GO to K3.

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K3 CHECK THE GPS ANTENNA INSTALLATION


- Verify the GPS antenna is installed correctly and no aftermarket equipment is obstructing the antenna.
- Is the GPS antenna installed correctly?

Yes
GO to K4.

No
Correctly INSTALL the GPS antenna. REFER to Global Positioning System (GPS) Antenna Service and Repair. TEST the system for normal operation.

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K4 ISOLATE THE GPS ANTENNA


- Install a new GPS antenna. Refer to Global Positioning System (GPS) Antenna Service and Repair.
- Move the vehicle outside of any enclosed structure to an area that is unobstructed by trees, tall buildings, and bridges.
- Operate the audio system in navigation mode.




- Does the GPS icon appear, then disappear?

Yes
The concern was caused by an inoperative GPS antenna. The system is operating correctly at this time. CLEAR the DTCs. REPEAT the self-test.

No
GO to K5.

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K5 CHECK FOR CORRECT ACM OPERATION


- Disconnect all the ACM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the ACM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new ACM. REFER to Audio Control Module (ACM) - Fusion, Milan Audio Control Module (ACM) - Fusion, Milan or Audio Control Module (ACM) - MKZ . TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

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