Product Link PL321 May Accumulate 24 Hours Daily{7606} Caterpillar

Articulated Truck: All

Asphalt Paver: All

Backhoe Loader: All

Cold Planer: All

Compact Wheel Loader: ALL

Earthmoving Compactor: All

Excavator: All

Integrated Toolcarrier: All

Landfill Compactor: All

Load Haul Dump: All

Mini Hydraulic Excavator: All

Motor Grader: All

Multi Terrain Loader: All

Off-Highway Truck/Tractor: All

Paving Compactor: All

Pipelayer: All

Road Reclaimer/Soil Stabilizer: All

Skid Steer Loader: All

Soil Compactor: All

Telehandler: All

Track Feller Buncher: Caterpillar

Track-Type Loader: All

Track-Type Skidder: All

Track-Type Tractor: All

Underground Articulated Truck: All

Wheel Dozer: All

Wheel Loader: All

Wheel Skidder: All

Wheel Tractor-Scraper: All

Introduction

The problem that is identified below does not have a known permanent solution. Until the permanent solution is known, use the solution that is identified below.

Problem

Factories have reported a problem that is related to Product Link PL321 hours that continue to increment when the machine is not running. The hours continue to increment when the keyswitch is in the off position. This problem does not occur often. The problem will only occur during or shortly after the initial install, following a software update, or the replacement of a PL121.

The problem was originally reported with the 3.0 software for the PL300 with software 311-8375.fls and for the PL121 with software 311-8377.smp. The problem is less likely to occur with the 3.1 software that is used on the PL300 with software 325-6576.fls and for the PL121 with software 325-6574.smp .

After the keyswitch has been in the on position and with the engine running, the Product Link may not detect that the keyswitch has been switched to the off position. If the Product Link does not detect that the key has been switched to the off position, then the Product Link will continue to increment the hours.

Solution

Perform the following procedure if the Product Link is accumulating hours while the key is in the off position.

1. Turn the battery disconnect switch to the off position for at least 10 seconds in order to disconnect power to the Product Link.

2. After the ten second waiting period, turn the battery disconnect switch to the on position in order to supply power to the PL121.

The issue only occurs the first time that the PL121 and PL300 communicate. The problem will stop if power is removed from the PL121 and then is reapplied to the PL121.