RETAINER 9G7543 - Caterpillar

There are problems that could be reported with the PL522 or 523 system but the problems are not caused by the PL522 or 523 system. The problem can be described as the intervals between reports are erratic. This section contains steps that are used to determine the possible cause. Check for active diagnostic codes for the PL522 or 523. Correct any diagnostic codes before proceeding. Visually inspect the following items for damage: PL522 or 523 module, antenna and cables. Verify that there are no loose connections.