PUMP GP-FUEL TRANSFER 2959260 - Caterpillar

Introduction
The 3406B PEEC Personality Modules have been updated to reflect new features. The following electronic service tools must also be updated:The 8T8697 Electronic Control Analyzer Programmer (ECAP) must be equipped with a NEXG4506 PEEC Service Program Module (SPM), Version 1.6.The 8T9828 Digital Diagnostic Tool (DDT) must be equipped with a NEXG4508 PEEC Service Program Module (SPM), Version 2.3.March 1991 Update
Engine Surge During Shifting: A momentary surge during shifting may be noticed on trucks equipped with this Personality Module.If the surge occurs at all, it will be noticed just as power is being applied after shifting. Severity of the surge depends upon driver technique. Drivers that bring power on GRADUALLY after shifting are LESS likely to notice the surge. Diagnostic Code 28 (Throttle Position Sensor out of adjustment): If the Pulse Width Modulated (PWM) signal from the Throttle Position Sensor (TPS) is less than 5% or greater than 95%, the diagnostic lamp will be activated and the occurrence will be logged. Pulse Width Signal of the Throttle Position Sensor (TPS): Will be transmitted over the data link between the Engine Control Module (ECM) and service tool.This will allow the service tool to display the PWM value of the TPS signal as seen by the ECM WITHOUT the additional PWM probe.This display may be accessed in the ECAP using the 3406B PEEC Truck Functions Menu to:* Select Calibrate/Monitor Sensors ... then* Monitor Throttle Position Sensor Refer to the 3406B PEEC Truck Functions Screen Map in Special Instruction SEHS8741-05 ... Using the NEXG4506 3406B PEEC Truck Functions Service Program Module for the sequence to follow to display these screens. Idle Shutdown Timer: The May 1990 Personality Module update inadvertently had the Diagnostic Lamp flash dim rather than bright while in the driver alert mode of the Idle Shutdown Timer. This has been corrected. Rating Type and Personality Module Release Date: Will be displayed on the ECAP Read Customer Parameters screen.