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Eaton Fuller Hybrid Transmission Hybrid Electrical Pretest

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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.

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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.

[/fusion_text][/fusion_builder_column][/fusion_builder_row][/fusion_builder_container][fusion_builder_container hundred_percent=”no” hundred_percent_height=”no” hundred_percent_height_scroll=”no” hundred_percent_height_center_content=”yes” equal_height_columns=”no” menu_anchor=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” status=”published” publish_date=”” class=”” id=”” background_color=”” background_image=”” background_position=”center center” background_repeat=”no-repeat” fade=”no” background_parallax=”none” enable_mobile=”no” parallax_speed=”0.3″ video_mp4=”” video_webm=”” video_ogv=”” video_url=”” video_aspect_ratio=”16:9″ video_loop=”yes” video_mute=”yes” video_preview_image=”” border_size=”” border_color=”” border_style=”solid” margin_top=”” margin_bottom=”” padding_top=”” padding_right=”” padding_bottom=”” padding_left=””][fusion_builder_row][fusion_builder_column type=”1_1″ layout=”1_1″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_image_id=”” background_position=”left top” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding_top=”” padding_right=”” padding_bottom=”” padding_left=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_text columns=”” column_min_width=”” column_spacing=”” rule_style=”default” rule_size=”” rule_color=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=””]

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

[/fusion_text][/fusion_builder_column][fusion_builder_column type=”1_2″ layout=”1_2″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_image_id=”” background_position=”left top” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding_top=”” padding_right=”” padding_bottom=”” padding_left=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_imageframe image_id=”14474|full” max_width=”” style_type=”” blur=”” stylecolor=”” hover_type=”none” bordersize=”” bordercolor=”” borderradius=”” align=”center” lightbox=”no” gallery_id=”” lightbox_image=”” lightbox_image_id=”” alt=”Inverter 56-Way Mating Connector View” link=”” linktarget=”_self” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]https://www.globaltransmissionsupply.com/wp-content/uploads/Inverter-56-Way-Mating-Connector-View.jpg[/fusion_imageframe][fusion_text columns=”” column_min_width=”” column_spacing=”” rule_style=”default” rule_size=”” rule_color=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=””]

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

[/fusion_text][/fusion_builder_column][fusion_builder_column type=”1_2″ layout=”1_2″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_image_id=”” background_position=”left top” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding_top=”” padding_right=”” padding_bottom=”” padding_left=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_imageframe image_id=”14213|medium” max_width=”” style_type=”” blur=”” stylecolor=”” hover_type=”none” bordersize=”” bordercolor=”” borderradius=”” align=”center” lightbox=”no” gallery_id=”” lightbox_image=”” lightbox_image_id=”” alt=”Deutsch 19 – Way Mating Connector View” link=”” linktarget=”_self” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]https://www.globaltransmissionsupply.com/wp-content/uploads/Eaton-Fuller-Harness-Connector-View-300×289.jpg[/fusion_imageframe][fusion_text columns=”” column_min_width=”” column_spacing=”” rule_style=”default” rule_size=”” rule_color=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=””]

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

[/fusion_text][/fusion_builder_column][fusion_builder_column type=”1_1″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_image_id=”” background_color=”” background_image=”” background_position=”left top” undefined=”” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” border_radius_top_left=”” border_radius_top_right=”” border_radius_bottom_left=”” border_radius_bottom_right=”” box_shadow=”no” box_shadow_vertical=”” box_shadow_horizontal=”” box_shadow_blur=”0″ box_shadow_spread=”0″ box_shadow_color=”” box_shadow_style=”” padding_top=”” padding_right=”” padding_bottom=”10″ padding_left=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_imageframe image_id=”14906|800″ max_width=”” style_type=”” blur=”” stylecolor=”” hover_type=”none” bordersize=”” bordercolor=”” borderradius=”” align=”center” lightbox=”no” gallery_id=”” lightbox_image=”” lightbox_image_id=”” alt=”Inverter to PEC locations Eaton Fuller transmission hybrid electrical pretest” link=”” linktarget=”_self” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]https://www.globaltransmissionsupply.com/wp-content/uploads/Inverter-to-PEC-locations-Eaton-Fuller-transmission-hybrid-electrical-pretest-800×363.jpg[/fusion_imageframe][/fusion_builder_column][fusion_builder_column type=”1_2″ layout=”1_1″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_image_id=”” background_position=”left top” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding_top=”” padding_right=”” padding_bottom=”” padding_left=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_imageframe image_id=”14907|400″ max_width=”” style_type=”” blur=”” stylecolor=”” hover_type=”none” bordersize=”” bordercolor=”” borderradius=”” align=”center” lightbox=”no” gallery_id=”” lightbox_image=”” lightbox_image_id=”” alt=”Eaton Fiuller transmission DC Converter to Ground” link=”” linktarget=”_self” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]https://www.globaltransmissionsupply.com/wp-content/uploads/DC-converter-to-ground-400×410.jpg[/fusion_imageframe][/fusion_builder_column][fusion_builder_column type=”1_2″ layout=”1_1″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_image_id=”” background_position=”left top” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding_top=”” padding_right=”” padding_bottom=”” padding_left=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_imageframe image_id=”14279|full” max_width=”” style_type=”” blur=”” stylecolor=”” hover_type=”none” bordersize=”” bordercolor=”” borderradius=”” align=”center” lightbox=”no” gallery_id=”” lightbox_image=”” lightbox_image_id=”” alt=”Deutsch 4-way OEM connector” link=”” linktarget=”_self” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]https://www.globaltransmissionsupply.com/wp-content/uploads/Deutsch-4-way-OEM-connector.jpg[/fusion_imageframe][fusion_text columns=”” column_min_width=”” column_spacing=”” rule_style=”default” rule_size=”” rule_color=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=””]

DC/DC Converter
4-Way OEM Connector

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

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

[/fusion_text][/fusion_builder_column][fusion_builder_column type=”1_2″ layout=”1_2″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_image_id=”” background_position=”left top” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding_top=”” padding_right=”” padding_bottom=”” padding_left=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_imageframe image_id=”14476|full” max_width=”” style_type=”” blur=”” stylecolor=”” hover_type=”none” bordersize=”” bordercolor=”” borderradius=”” align=”center” lightbox=”no” gallery_id=”” lightbox_image=”” lightbox_image_id=”” alt=”Deutsch 40-Way Mating Connector View” link=”” linktarget=”_self” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]https://www.globaltransmissionsupply.com/wp-content/uploads/Duetsch-40-way-mating-connector-view.png[/fusion_imageframe][fusion_text columns=”” column_min_width=”” column_spacing=”” rule_style=”default” rule_size=”” rule_color=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=””]

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

[/fusion_text][/fusion_builder_column][fusion_builder_column type=”1_2″ layout=”1_2″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_image_id=”” background_position=”left top” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding_top=”” padding_right=”” padding_bottom=”” padding_left=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_imageframe image_id=”14213|medium” max_width=”” style_type=”” blur=”” stylecolor=”” hover_type=”none” bordersize=”” bordercolor=”” borderradius=”” align=”center” lightbox=”no” gallery_id=”” lightbox_image=”” lightbox_image_id=”” alt=”Deutsch 19 – Way Mating Connector View” link=”” linktarget=”_self” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]https://www.globaltransmissionsupply.com/wp-content/uploads/Eaton-Fuller-Harness-Connector-View-300×289.jpg[/fusion_imageframe][fusion_text columns=”” column_min_width=”” column_spacing=”” rule_style=”default” rule_size=”” rule_color=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=””]

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

[/fusion_text][/fusion_builder_column][fusion_builder_column type=”1_1″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_image_id=”” background_color=”” background_image=”” background_position=”left top” undefined=”” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” border_radius_top_left=”” border_radius_top_right=”” border_radius_bottom_left=”” border_radius_bottom_right=”” box_shadow=”no” box_shadow_vertical=”” box_shadow_horizontal=”” box_shadow_blur=”” box_shadow_spread=”” box_shadow_color=”” box_shadow_style=”” padding_top=”” padding_right=”” padding_bottom=”10″ padding_left=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_imageframe image_id=”14908|800″ max_width=”” style_type=”” blur=”” stylecolor=”” hover_type=”none” bordersize=”” bordercolor=”” borderradius=”” align=”center” lightbox=”no” gallery_id=”” lightbox_image=”” lightbox_image_id=”” alt=”Inverter to PEC locations Eaton Fuller MY009 for Eaton Fuller Hybrid Transmission Electrical Pretest” link=”” linktarget=”_self” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]https://www.globaltransmissionsupply.com/wp-content/uploads/Inverter-to-PEC-locations-Eaton-Fuller-MY009-transmission-hybrid-electrical-pretest-800×385.jpg[/fusion_imageframe][/fusion_builder_column][fusion_builder_column type=”1_2″ layout=”1_1″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_image_id=”” background_position=”left top” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding_top=”” padding_right=”” padding_bottom=”” padding_left=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_imageframe image_id=”14907|400″ max_width=”” style_type=”” blur=”” stylecolor=”” hover_type=”none” bordersize=”” bordercolor=”” borderradius=”” align=”center” lightbox=”no” gallery_id=”” lightbox_image=”” lightbox_image_id=”” alt=”Eaton Fiuller transmission DC Converter to Ground” link=”” linktarget=”_self” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]https://www.globaltransmissionsupply.com/wp-content/uploads/DC-converter-to-ground-400×410.jpg[/fusion_imageframe][/fusion_builder_column][fusion_builder_column type=”1_2″ layout=”1_1″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_image_id=”” background_position=”left top” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding_top=”” padding_right=”” padding_bottom=”” padding_left=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_imageframe image_id=”14279|full” max_width=”” style_type=”” blur=”” stylecolor=”” hover_type=”none” bordersize=”” bordercolor=”” borderradius=”” align=”center” lightbox=”no” gallery_id=”” lightbox_image=”” lightbox_image_id=”” alt=”Deutsch 4-way OEM connector” link=”” linktarget=”_self” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]https://www.globaltransmissionsupply.com/wp-content/uploads/Deutsch-4-way-OEM-connector.jpg[/fusion_imageframe][fusion_text columns=”” column_min_width=”” column_spacing=”” rule_style=”default” rule_size=”” rule_color=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=””]

DC/DC Converter
4-Way OEM Connector

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

[/fusion_text][/fusion_builder_column][/fusion_builder_row][/fusion_builder_container][fusion_builder_container hundred_percent=”no” hundred_percent_height=”no” hundred_percent_height_scroll=”no” hundred_percent_height_center_content=”yes” equal_height_columns=”no” menu_anchor=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” status=”published” publish_date=”” class=”” id=”” background_color=”” background_image=”” background_position=”center center” background_repeat=”no-repeat” fade=”no” background_parallax=”none” enable_mobile=”no” parallax_speed=”0.3″ video_mp4=”” video_webm=”” video_ogv=”” video_url=”” video_aspect_ratio=”16:9″ video_loop=”yes” video_mute=”yes” video_preview_image=”” border_size=”” border_color=”” border_style=”solid” margin_top=”” margin_bottom=”” padding_top=”” padding_right=”” padding_bottom=”” padding_left=””][fusion_builder_row][fusion_builder_column type=”1_1″ layout=”1_1″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_image_id=”” background_position=”left top” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding_top=”” padding_right=”” padding_bottom=”” padding_left=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_modal name=”warnings_cautions” title=”Warnings & Cautions” size=”large” background=”” border_color=”” show_footer=”yes” class=”” id=””]Danger: Danger indicates you will be severely injured or killed if do not follow the indicated procedure.
Warning: Warning indicates an immediate hazard, which could result in severe personal injury if you do not follow the indicated procedure.
Caution: Caution indicates vehicle or property damage could occur if you do not follow the indicated procedure.

 Note: Note indicates additional detail that will aid in the diagnosis or repair of a component/system.

Follow the specified procedures in the indicated order to avoid personal injury:

1. If the high-voltage cones are around the vehicle and the lockout is installed on the PEC, the only person that should be allowed to start the vehicle is the person who signed the lockout tag.
2. Before working on a vehicle or leaving the cab while the engine is running, you should place the shift lever in “N” set the parking brake, and block the wheels.
3. For safety reasons, always engage the service brakes prior to selecting gear positions from “N.”
4. Before starting a vehicle always be seated in the driver’s seat, select “N” on the shift control, and set the parking brakes.
5. In vehicles with ePTO, the engine and/or
Motor/Generator can start in ePTO mode. Never perform any maintenance or work on vehicle, while in this mode.
6. 12-Volt Battery positive (+) and negative (-) must be disconnected prior to any welding on any Hybrid equipped vehicle.

Caution: Follow the specified procedures in the indicated order to avoid equipment malfunction or damage.
Caution: Do not release the parking brake or attempt to select a gear until the air pressure is at the correct level.
Caution: To avoid damage to the transmission during towing place the shift lever in “N” and lift the drive wheels off the ground or disconnect the driveline.

High-Voltage Warnings & Cautions

  • Use CO2 or Dry Chemical Fire Extinguishers.
  • The high-voltage wiring is covered in orange insulation or convoluted tubing and marked with warning labels at the connectors.
  • All Eaton® Hybrid Diesel/Electric vehicles will be marked ‘Hybrid’ on the outside of the vehicle, along with the shift label on the dash.
  • Refer to OEM for specific location of chassis mounted hybrid components.
  • Do NOT cut into the orange high-voltage cables.
  • Do NOT cut into or open the PEC.
  • Do NOT cut into or open the DC/DC Converter.
  • Do NOT cut into or open the Inverter.

A buffer zone must be set up and high-voltage insulated rubber gloves (class 0 with leather protectors) are required prior to working on high-voltage. Failure to follow these instructions may result in severe personal injury or death.
The rubber-insulated gloves that must be worn while working on the high-voltage system are class 0 with leather protectors. The rubber gloves should be tested before EVERY use following the rubber insulation gloves testing procedure found in “Diagnostic Tools/Service Publications” on page 6. Failure to follow these instructions may result in severe personal injury or death.
Before inspecting or working on any high-voltage cables or components the “High-Voltage Service Shutdown and Power-Up Procedure” on page 4 should be followed. Failure to follow these instructions may result in severe personal injury or death.
The Lockout and Tagout devices should only be removed by the technician that placed the Lockout and Tagout devices on the vehicle. Failure to follow these instructions may result in severe personal injury or death.
High-voltage rubber insulated gloves (class 0 with leather protectors) must be worn when working on any
high-voltage cables. The “High-Voltage Service Shutdown and Power-Up Procedure” on page 4 must be followed prior to removing any high-voltage cables. Failure to follow these instructions may result in severe personal injury or death.
High-voltage cables and wiring are orange and contain a warning label at the connectors. High-voltage components are marked with a label. High-voltage rubber insulated gloves (class 0 with leather protectors) must be used when working on any of these components. Failure to follow these instructions may result in severe personal injury or death.

High-Voltage Service Shutdown Procedures

High-Voltage Service Shutdown and Power-Up Procedure1. Follow “High-Voltage Work Area” procedure.
2. Locate the red PEC Service Switch on the front of the PEC and push switch off.
3. Remove the Service Switch Cover and install the Lockout Bracket (J48506).
4. Fasten tag to the Lockout Bracket.
5. Ensure the PEC Service Switch can not move from the off position.
6. Allow the system to set for a minimum of 5 minutes to discharge high voltage.
7. Connect ServiceRanger and view the Data Monitor PID 116 called “High-Voltage Battery Potential.” Use SPN 520323 for J1939 connection “Battery Voltage RB” (Relay Box).
8. The voltage should be 30 volts or less. If the voltage is above 30 volts, do not work on the vehicle and contact Eaton® at 1-800-826-HELP (4357).
9. Turn ignition key off and proceed to repair or troubleshooting step.
Note: The voltage drops to zero when the key is off.

High-Voltage Service Power-Up Procedure

1. Install all high-voltage connectors into their locked positions.
2. If you are the person working on the vehicle, remove the Lockout Bracket and tag.
3. Reinstall the Lockout Bracket over the Service Switch.
4. Pull the Service Switch out and let vehicle set for 2 minutes.
5. Start vehicle when appropriate.[/fusion_modal][fusion_modal name=”component_location” title=”Eaton Hybrid Component and Connector Location ” size=”large” background=”#ffffff” border_color=”” show_footer=”yes” class=”” id=””]

Eaton Hybrid Component and Connector Locations MY08 Systems

[/fusion_modal][fusion_modal name=”component_location2″ title=”Eaton Hybrid Component and Connector Location MY09 Systems” size=”large” background=”#ffffff” border_color=”” show_footer=”yes” class=”” id=””]

Eaton Hybrid Component and Connector Locations MY09 Systems

[/fusion_modal][/fusion_builder_column][/fusion_builder_row][/fusion_builder_container][fusion_builder_container hundred_percent=”no” hundred_percent_height=”no” hundred_percent_height_scroll=”no” hundred_percent_height_center_content=”yes” equal_height_columns=”no” menu_anchor=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” status=”published” publish_date=”” class=”” id=”” background_color=”” background_image=”” background_position=”center center” background_repeat=”no-repeat” fade=”no” background_parallax=”none” enable_mobile=”no” parallax_speed=”0.3″ video_mp4=”” video_webm=”” video_ogv=”” video_url=”” video_aspect_ratio=”16:9″ video_loop=”yes” video_mute=”yes” video_preview_image=”” border_size=”” border_color=”” border_style=”solid” margin_top=”” margin_bottom=”” padding_top=”” padding_right=”” padding_bottom=”” padding_left=””][fusion_builder_row][fusion_builder_column type=”1_1″ layout=”1_1″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_image_id=”” background_position=”left top” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding_top=”” padding_right=”” padding_bottom=”” padding_left=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_content_boxes layout=”clean-horizontal” columns=”1″ title_size=”18px” heading_size=”3″ title_color=”#ffffff” body_color=”#ffffff” backgroundcolor=”#4f4f4f” icon=”” iconflip=”” iconrotate=”” iconspin=”no” iconcolor=”” icon_circle=”” icon_circle_radius=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” icon_size=”” icon_hover_type=”” hover_accent_color=”” image=”” image_id=”” image_max_width=”” link_type=”” button_span=”” link_area=”” link_target=”” icon_align=”left” animation_type=”” animation_delay=”” animation_offset=”” animation_direction=”left” animation_speed=”0.3″ margin_top=”” margin_bottom=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=””][fusion_content_box title=”STEP 1. Verify Inverter ground continuity” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”no” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_max_width=”” link=”” linktext=”Read More” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

  1. Perform the Electrical Pretest, then continue to # 2.
  2. Key off.
  3. Disconnect the Inverter 40-Way Connector.
    Danger: See High-Voltage Service Shutdown and Power-Up Procedures. Follow the procedures to avoid shock, burn or death from improperly handled high-voltage.
  4. (MY08) Measure resistance from Pin 1 to battery negative and then from Pin 2 to battery negative:
    • If resistance is 0–0.3 ohms from Pin 1 to battery negative and from Pin 2 to battery negative, go to Step 2.
    • If resistance is outside of range, repair the Inverter Ground Harness. Repeat this step.
      (MY09) Measure resistance from Pin 6 to battery negative and then from Pin 7 to battery negative:
    • If resistance is 0–0.3 ohms from Pin 6 to battery negative and from Pin 7 to battery negative, go to Step 2.
    • If resistance is outside of range, repair the Inverter Ground Harness. Repeat this step.

[/fusion_content_box][/fusion_content_boxes][fusion_content_boxes layout=”clean-horizontal” columns=”2″ title_size=”18px” heading_size=”3″ title_color=”#ffffff” body_color=”#ffffff” backgroundcolor=”#4f4f4f” icon=”” iconflip=”” iconrotate=”” iconspin=”no” iconcolor=”” icon_circle=”” icon_circle_radius=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” icon_size=”” icon_hover_type=”” hover_accent_color=”” image=”” image_id=”” image_max_width=”” link_type=”” button_span=”” link_area=”” link_target=”” icon_align=”left” animation_type=”” animation_delay=”” animation_offset=”” animation_direction=”left” animation_speed=”0.3″ margin_top=”” margin_bottom=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=””][fusion_content_box title=”STEP 2. erify voltage at Inverter Connector. ” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”no” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_max_width=”” link=”” linktext=”Read More” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

  1. (MY08) Connect a multimeter to the Inverter 56-Way Connector Pin 15 and Pin 1.
    (MY09)Connect a volt/ohm meter to the Inverter 40-Way Connector Pin 1 and Pin 6.
  2. Key on.
  3. Observe Volt/Ohm Meter voltage reading:
    • If voltage is 11–13 volts, go to Step 3.
    • If voltage is outside of range, repair the harness from the HCM. Repeat this step.

[/fusion_content_box][fusion_content_box title=”STEP 3. Verify continuity of Inverter to PEC ground wire. .” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”no” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_max_width=”” link=”” linktext=”Read More” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

  1. Key off.
  2. Reconnect the Inverter 56-Way Connector Pin 15 & Pin 1 (MY08) Inverter 40-Way Connector (MY09).
  3.  Disconnect the Power Electric Carrier (PEC) 19- Way Connector.
  4. Measure resistance from PEC Pin 7 to battery negative.
    • If resistance from Pin 7 to battery negative is 0–0.3 ohms, go to Step D.
    • If resistance is outside of range, repair the Inverter to PEC ground wire. Repeat this step.

[/fusion_content_box][/fusion_content_boxes][fusion_content_boxes layout=”clean-horizontal” columns=”2″ title_size=”18px” heading_size=”3″ title_color=”#ffffff” body_color=”#ffffff” backgroundcolor=”#4f4f4f” icon=”” iconflip=”” iconrotate=”” iconspin=”no” iconcolor=”” icon_circle=”” icon_circle_radius=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” icon_size=”” icon_hover_type=”” hover_accent_color=”” image=”” image_id=”” image_max_width=”” link_type=”” button_span=”” link_area=”” link_target=”” icon_align=”left” animation_type=”” animation_delay=”” animation_offset=”” animation_direction=”left” animation_speed=”0.3″ margin_top=”” margin_bottom=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=””][fusion_content_box title=”STEP 4. Verify voltage at PEC 19-way Connector” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”no” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_max_width=”” link=”” linktext=”Read More” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

  1. Connect a volt/ohm to the PEC 19-Way Connector Pin 6 and Pin 7.
  2. Key on.
  3. Observe volt/ohm voltage reading.
    • If voltage is 11–13 volts and vehicle has ePTO feature on Push Button, go to Step 5.
    • If voltage is 11–13 volts and vehicle does not have ePTO feature, test is complete. Reconnect PEC 19-Way Connector. Go to “Fault Code Isolation Procedure Index”.
    • If voltage is outside of range, repair the power supply harness from the Inverter. Repeat this step.

[/fusion_content_box][fusion_content_box title=”STEP 5. Verify continuity of DC/DC Ground Wire.” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_max_width=”” link=”” linktext=”” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

  1. Key off.
  2. Reconnect PEC 19-Way Connector.
  3. Disconnect DC/DC Converter 4-Way Connector.
  4. Measure resistance from DC/DC Converter 4-Way Connector Pin 4 to battery negative:
    • If resistance between Pin 4 and battery negative is 0–0.3 ohms, test is complete. Reconnect the 4-Way Connector. See “Fault Code Isolation Procedure Index”.
    • If resistance is outside of range, repair the Ground Harness from the DC/DC Converter to battery negative, then repeat this step.

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