Pinpoint Test H: DTC U0155

Parking Aid

Pinpoint Tests

Pinpoint Test H: DTC U0155

Normal Operation

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

- DTC U0155 (Lost Communication With Instrument Panel Cluster (IC)) Control Module - a continuous and on-demand DTC that sets in the PAM when PRNDL messages are not received from the IC.

This pinpoint test is intended to diagnose the following:

- IC
- Networked data fault



PINPOINT TEST H: DTC U0155

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H1 CONFIRM THE DTC WILL SET IN CONTINUOUS MEMORY


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: PAM Continuous DTCs.
- Clear the DTCs. Operate the system and determine if the concern is still present.
- Retrieve continuous PAM DTCs.
- Is DTC U0155 present?

Yes
GO to H2.

No
System is operating normally at this time.

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H2 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 H3.

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

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H3 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.

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