Test A: DTC U2023 - Fault Received From External Node

PINPOINT TEST A: DTC U2023 - FAULT RECEIVED FROM EXTERNAL NODE

A1-A2:

A3-A7:

Normal Operation
Instrument cluster DTC U2023 sets when a specific invalid message (when the ignition switch is in the RUN position) is received from the restraints control module (RCM), the smart junction box (SJB), the powertrain control module (PCM), the anti-lock brake system (ABS) module, or the transmission control module (TCM).

Possible Causes
- TCM