Pinpoint Test F: DTC U2473

Parking Aid - Expedition

Pinpoint Tests

Pinpoint Test F: DTC U2473

Normal Operation

The Parking Aid Module (PAM) receives the vehicle speed from the Instrument Cluster (IC) as a gateway message from the PCM.

- DTC U2473 (Unexpected Vehicle Speed (VSS)) - a continuous and on-demand DTC that sets when the PAM receives an unknown vehicle speed message.

This pinpoint test is intended to diagnose the following:

- IC fault
- Network data fault



PINPOINT TEST F: DTC U2473

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F1 CHECK THE DTCs FROM THE PAM ON-DEMAND SELF-TEST


- Ignition ON.
- Clear continuous DTCs from all modules.
- Ignition OFF.
- Wait at least 10 seconds.
- Repeat the PAM on-demand self-test.
- Are any DTCs present?

Yes
If DTCs U2473 and U0155 are both present, GO to Pinpoint Test J. Pinpoint Test J: DTC U0155

For DTC U2473 only, GO to F2.

For all other DTCs, REFER to DTC Charts. Parking Aid

No
The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

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F2 CHECK THE SPEEDOMETER OPERATION


- Observe the speedometer operation while test driving the vehicle.
- Does the speedometer operate correctly?

Yes
GO to F3.

No
REFER to Instrument Panel, Gauges and Warning Indicators.

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F3 CHECK FOR CORRECT IC OPERATION


- Disconnect the IC connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the IC connector and make sure it seats correctly.
- Operate the system and determine if the concern is still present.
- Is the concern still present?

Yes
INSTALL a new IC. REFER to Instrument Panel, Gauges and Warning Indicators. 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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