Pinpoint Test M: The Position Cursor Is Inaccurate

Information and Entertainment System

Pinpoint Tests

Pinpoint Test M: The Position Cursor Is Inaccurate

Normal Operation

The primary source of vehicle location for the navigation system is the Audio Control Module (ACM) receiving the position signal through the Global Positioning System (GPS) antenna.

In addition, the ACM receives the navigation rolling wheel count signal from the Instrument Cluster (IC) (which gateways the signal from the ABS module). This secondary signal is used to calculate vehicle position when the GPS signal is lost. It also supports the adaptive learning function of the ACM, whereby the ACM can compensate for long-term differences between the GPS signal location and the actual distance traveled by the vehicle.

If DTC B119F:01 or DTC B119F:13 is present, GO to Pinpoint Test I to diagnose a concern with the GPS antenna. Pinpoint Test I: No Global Positioning System (GPS) Antenna Signal

- DTC U2014:09 (Control Module Hardware: Component Failure) - sets when the ACM detects a fault in the internal gyroscope. The gyroscope is not serviceable.

This pinpoint test is intended to diagnose the following:

- GPS antenna concern
- Communication network concern
- ACM



PINPOINT TEST M: THE POSITION CURSOR IS INACCURATE

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M1 CHECK FOR DTC U2014:09


- Carry out the ACM self-test.
- Is DTC U2014:09 present?

Yes
INSTALL a new ACM. REFER to Audio Control Module (ACM) Audio Control Module (ACM). TEST the system for normal operation.

No
GO to M2.

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M2 CHECK THE ACM FOR GPS SIGNAL-RELATED DTCs


- Retrieve the ACM continuous DTCs.
- Is DTC B119F:01 or DTC B119F:13 present?

Yes
GO to Pinpoint Test I. Pinpoint Test I: No Global Positioning System (GPS) Antenna Signal

No
GO to M3.

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M3 CHECK FOR DTC U0155:00


- Review the ACM continuous DTCs.
- Is DTC U0155:00 present?

Yes
GO to Pinpoint Test AK. Pinpoint Test AK: DTC U0155 Or DTC U0155:00

No
GO to M4.

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M4 CHECK FOR CORRECT ACM OPERATION


- Ignition OFF.
- 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) Audio Control Module (ACM). 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 any DTCs present.

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