Eaton Fuller Hybrid Transmission Hybrid Electrical Pretest2019-06-03T00:20:04+00:00

Eaton Fuller Hybrid Transmission Hybrid Electrical Pretest

This test must be performed prior to diagnosing certain specific hybrid faults. his test verifies the power supply for the Inverter and the Power Electric Carrier (PEC).
Note: You must perform the Electrical Pretest before performing the Hybrid Electrical Pretest.
Note: This test is called out in the procedures where it is required

Electrical Pretest Detection

There is no detection process specifically for the basic electrical supply; however, failures of this type are generally detected by the hybrid system or driver as some other type of fault code or symptom.

Hybrid Electrical Pretest Fallback

Loss of ignition power causes the hybrid system to be inoperable. In this situation, the vehicle will run under diesel power only.

Possible Causes Indicated by Eaton Fuller Hybrid Transmission Hybrid Electrical Pretest

(MY08) Low-voltage can be caused by Power Harness connections from Inverter or BCU.

(MY09) Low-voltage can be caused by power harness connections from Inverter or PEC.

MY08 Component Identification for Eaton Fuller Hybrid Transmission Hybrid Electrical Pretest:

Inverter 56-Way Mating Connector View

Inverter 56-Way Mating Connector View
(Inverter – Low Voltage Connector)

Deutsch 19 - Way Mating Connector View

Deutsch 19 – Way Mating Connector View
(PEC – Low Voltage Connector)

Inverter to PEC locations Eaton Fuller transmission hybrid electrical pretest
Eaton Fiuller transmission DC Converter to Ground
Deutsch 4-way OEM connector

DC/DC Converter
4-Way OEM Connector

NOTE: Refer to the Eaton Hybrid Component and Connector Location for Connector Locations in MY08 Systems

MY09 Component Identification for Eaton Fuller Hybrid Transmission Hybrid Electrical Pretest:

Deutsch 40-Way Mating Connector View

Deutsch 40-Way Mating Connector View
(Inverter – Low Voltage Connector)

Deutsch 19 - Way Mating Connector View

Deutsch 19 – Way Mating Connector View
(PEC – Low Voltage Connector)

Inverter to PEC locations Eaton Fuller MY009 for Eaton Fuller Hybrid Transmission Electrical Pretest
Eaton Fiuller transmission DC Converter to Ground
Deutsch 4-way OEM connector

DC/DC Converter
4-Way OEM Connector

NOTE: Refer to the Eaton Hybrid Component and Connector Location for Connector Locations in MY09 Systems.

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