Pinpoint Test D: DTC U2471

Parking Aid - Expedition

Pinpoint Tests

Pinpoint Test D: DTC U2471

Normal Operation

The Parking Aid Module (PAM) receives the PRNDL state from the Instrument Cluster (IC) as a gateway message from the Transmission Control Module (TCM).

- DTC U2471 (Unexpected PRNDL State) - a continuous and on-demand DTC that sets when the PAM receives an unknown PRNDL state message from the IC.

This pinpoint test is intended to diagnose the following:

- IC
- Network data fault



PINPOINT TEST D: DTC U2471

-------------------------------------------------
D1 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 U2471 and U0155 are both present, GO to Pinpoint Test J. Pinpoint Test J: DTC U0155

For DTC U2471 only, GO to D2.

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.

-------------------------------------------------
D2 VERIFY THE IC PRNDL DISPLAY FUNCTIONS CORRECTLY


- Monitor the IC PRNDL display while moving the gearshift lever through the range of positions.
- Does the PRNDL match all range positions?

Yes
GO to D3.

No
REFER to Instrument Panel, Gauges and Warning Indicators to diagnose the PRNDL.

-------------------------------------------------
D3 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.

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.

-------------------------------------------------