[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=”35″ 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=””]

Eaton Fuller Hybrid Transmission Fault Code 118 – Auxiliary High Voltage Relay Control Circuit Fault

[/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=””]

Fault code for Eaton Hybrid Drive Systems models (MY09) EH-8E406A-U/P, EH-8E406A-UP, EH-8E406A-UPG, EH-8E406A-CD, EH-8E406A-CDG, EH-8E406A-CDR, EH-8E406A-T, EH-6E706B-CD, EH-6E706B-P and EH-6E706B-UPG. Read below to learn how to test, clear and fix fault code errors for your Freightliner, Mack, Peterbilt, Kenworth, Volvo, International, and heavy-duty truck and equipment. The auxiliary high-voltage relays, located in the Power Electric Carrier (PEC), are controlled by the Hybrid Control Module (HCM). At key on, high-voltage power is supplied from the Relay Box to the auxiliary high-voltage relays. When the ePTO option is selected on the Push Button Shift Control, the HCM energizes the control circuits for the main positive and main negative relays. The power then flows through the auxiliary high-voltage relays to the DC/DC Converter.

Fault Code 118 – Auxiliary High Voltage Relay Control Circuit Fault Detection

The following preconditions must be met before the system detects the fault:

Hybrid Control Module (HCM) ignition voltage is greater than 7 volts and less than 16 volts.

Note: When troubleshooting an Inactive code refer to the Product Diagnostic Mode (PDM)

Conditions to Set Fault Code Active

FMI 3 is set when the HCM detects a short to battery in the coil circuit of the auxiliary high-voltage relay.
FMI 4 is set when the HCM detects a short to ground in the coil circuit of the auxiliary high-voltage relay.
FMI 5 is set when the HCM detects an open in the coil circuit of the auxiliary high-voltage relay.

Fallback When Fault Code 118 is set the following conditions occur:

Amber “Check Hybrid” light illuminates.
Fault is stored in Hybrid Control Module (HCM) memory.
The DC/DC Converter does not operate because the HCM de-energizes the auxiliary high-voltage relay circuit.

[/fusion_text][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=””]

Conditions to Set Fault Code Inactive

Only Inactive faults can be cleared from the Transmission Electronic Control Unit (TECU) or HCM history using ServiceRanger. The TECU automatically clears the faults from history after 200 hours and the HCM automatically clears the faults from history after the fault has been Inactive for 200 hours.

This fault code can be caused by any of the following:

FMI 3, 4, 5
- OEM wiring from HCM to PEC
- DC/DC cable high-voltage loop
- DC/DC converter
- Auxiliary Power Generator (APG) cable high-voltage loop (if equipped)
- APG converter (if equipped)
- Auxiliary high-voltage relay (inside PEC)

Fault Code 118 – Auxiliary High Voltage Relay Control Circuit Fault Test

Component Identification:

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

[/fusion_text][/fusion_builder_column][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_imageframe image_id=”14687|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=”HCM PEC DC DC APG Connectors Eaton Fuller transmission” 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/HCM-PEC-DC-DC-APG-Connectors.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=””]

If vehicle is not equipped with APG, a HV interlock cap with loop should be installed if vehicle is not equipped with a DC/DC, A HV Interlock cap with loop should be installed.

[/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

1. 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=””]

[/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=””]

[/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_width=”” image_height=”” 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 Active or Inactive fault code status and FMIs present.” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”no” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_width=”” image_height=”” link=”” linktext=”Read More” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

Review and follow the Warnings & Cautions.
Retrieve Active fault codes and FMIs with ServiceRanger using the 9-Way Diagnostic Connector or manually.
Key off.
Danger: See High-Voltage Service Shutdown and Power-Up Procedures. Follow the procedures to avoid shock, burn or death from improperly handled high-voltage.
Which FMIs are present?
- If FMI 3 is listed, go to Step 2.
- If FMI 4 is listed, go to Step 3.
- If FMI 5 is listed go to Step 6.

[/fusion_content_box][/fusion_content_boxes][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_width=”” image_height=”” 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. Measure voltage of HCM Harness to ground.” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_width=”” image_height=”” link=”” linktext=”” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

Key off.
Disconnect the HCM Harness 38-Way Connector.3. Key on. Code 88 will set. Clear fault after testing.
Measure voltage on the following pins of the 38- Way wire harness:
- Pin 33 to ground
- Pin 5 to ground
  - If the voltage from Pin 33 to ground and Pin 5 to ground is 0 volts, replace the HCM (only if Fault Code is Active), then go to Step 10.
  - If the voltage is found on Pin 33 to ground or Pin 5 to ground, disconnect the 19-Way con-nector at PEC and retest.
  - If voltage is still present, repair Vehicle Har-ness between HCM and PEC.
  - If voltage is gone after retest, go to Step 3.

[/fusion_content_box][/fusion_content_boxes][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_width=”” image_height=”” 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 3. Measure resistance of the HCM Harness circuit to ground.” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_width=”” image_height=”” link=”” linktext=”” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

Key on.
Remove 19-Way Connector at PEC. Check for voltage on Pin 3 and Pin 4 on PEC.
- If any voltage is found perform the following steps:
  - Remove DC/DC high-voltage cable and retest.
  - Remove APG high-voltage cable and retest.
    - Replace PEC if voltage is still present.
If no voltage is found, measure the resistance the PEC 19-Way Connector on the following pins:
- Pin 3 to Pin 7
- Pin 3 to Pin 10
- Pin 3 to Pin 14
- Pin 3 to PEC mounting stud
  - If ohms are open circuit, reconnect DC/DC high-voltage cable and APG high-voltage cable and retest. If still an open circuit, go to Step 2.
  - If ohms show shorted circuit, remove DC/DC and APG high-voltage cables. If still shorted, replace the PEC. After repairs are made, go to Step 10.
  - If short is isolated to 1 high-voltage cable, check cable and component and ohm cable interlocks end-to-end. If those are good, replace shorted component (DC/DC Converter or APG Converter).

[/fusion_content_box][/fusion_content_boxes][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_width=”” image_height=”” 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. Test for a short to ground on the Vehicle Harness from the HCM to the PEC.” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”no” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_width=”” image_height=”” link=”” linktext=”Read More” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

Key off
Disconnect the HCM 38-Way Connector. The PEC 19- Way Connector should be connected.
Measure the resistance of the 38-Way Connector on Pin 33 to ground.
- If resistance is OL, replace the HCM. See the Hybrid Control Module (HCM) Removal and Installation procedure in TRSM2000.
- If resistance shows a short in circuit to ground, disconnect the 19-Way Connector at the PEC and retest Pin 33 to ground.
- If short is still present, repair the Vehicle Harness between the HCM and the PEC
- If short is gone, go to Step 5.

[/fusion_content_box][/fusion_content_boxes][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_width=”” image_height=”” 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 5. Measure resistance from DC/DC Converter to ground.” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_width=”” image_height=”” link=”” linktext=”” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

Key off.
Disconnect the 19-Way Connector from the PEC.
Measure resistance on the PEC 19-Way Connector on the following pins:
- Pin 3 to Pin 7
- Pin 3 to Pin 10
- Pin 3 to Pin 14
- Pin 3 to PEC mounting stud
  - If resistance shows OL, go to Step 4. Retest.
  - If resistance shows short in circuit to ground, remove high-voltage DC/DC and APG cables one at a time to isolate circuit with short.
  - If short is found in one of the auxiliary high-voltage cables, remove the high-voltage cable and ohm interlock pins end-to-end. If cable is good, replace shorted component (DC/DC Converter or APG Converter).
  - If resistance still shows short with high-volt-age cables removed, replace PEC. See the MY09 Power Electric Carrier (PEC) Removal and Installation procedure in TRSM2000. After repairs are complete, go to Step 10.

[/fusion_content_box][/fusion_content_boxes][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_width=”” image_height=”” 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 6. Measure resistance from DC/DC Converter to ground.” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”no” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_width=”” image_height=”” link=”” linktext=”Read More” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

Key off
Remove the 19-Way Connector from the PEC.
Measure the resistance on the following pins on the PEC Connector:
- Pin 3 to Pin 4
- If resistance is 12–22 ohms, go to Step 9.
- If resistance is OL, go to Step 7.

[/fusion_content_box][/fusion_content_boxes][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_width=”” image_height=”” 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 7. Verify continuity of the DC/DC cable.” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_width=”” image_height=”” link=”” linktext=”” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

Remove DC/DC High-Voltage Cable at PEC. Leave cable attached to DC/DC Converter.
Note: If not equipped with DC/DC Converter, check Cap Interlock Loop.
Measure resistance on DC/DC High-Voltage Cable Interlock Pins.
- If resistance is 0–0.3 ohms, go to Step 8.
- If resistance is OL, remove DC/DC High-Voltage Cable and ohm Interlock Pins end-to-end.
- If cable resistance is OL, replace DC/DC Cable.
- If cable resistance is 0–0.3 ohms, replace DC/DC Converter. See the DC/DC Converter Removal and Installation procedure in TRSM2000. After repairs are complete, go to Step 10.

[/fusion_content_box][/fusion_content_boxes][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_width=”” image_height=”” 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 8. Verify continuity of the APG cable.” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”no” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_width=”” image_height=”” link=”” linktext=”Read More” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

Remove APG cable from PEC. Leave cable attached at APG end.
Note: If not equipped with APG, check Cap Interlock Loop
Measure resistance on APG High-Voltage Cable Interlock Pins.
- If resistance is 0–0.3 ohms, replace PEC. See the MY09 Power Electric Carrier (PEC) Removal and Installation procedure in TRSM2000. After repairs are made, go to Step 10.
- If resistance is OL, remove APG High-Voltage Cable. Measure Interlock Pins end-to-end.
- If cable resistance is OL, replace APG High-Voltage Cable.
- If cable resistance is 0–0.3 ohms, replace APG. After making repairs, go to Step 10.

[/fusion_content_box][/fusion_content_boxes][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=”#f41000″ image=”” image_id=”” image_width=”” image_height=”” 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 9. Measure resistance of the HCM.” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_width=”” image_height=”” link=”” linktext=”” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

Key off.
Note: This step is performed after measuring the ohms on Pin 3 and Pin 4 and they measured between 12–22 ohms.
Remove the 38-Way Vehicle Harness Connector.
Remove the 19-Way Connector at the PEC.
Measure the following pins between the 38-Way Connector and the 19-Way Connector:
- Pin 33 (38-Way Connector) to Pin 3 (19-Way Connector).
- Pin 5 (38-Way Connector) to Pin 4 (19-Way Connector).
  - If resistance is OL, repair Vehicle Harness between the HCM and the PEC.
  - If resistance is between 0–0.3 ohms, replace HCM. See the Hybrid Control Module (HCM) Removal and Installation procedure in TRSM2000. After repairs are made, go to Step 10.

[/fusion_content_box][/fusion_content_boxes][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=”#f41000″ image=”” image_id=”” image_width=”” image_height=”” 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 10. Verify repair.” backgroundcolor=”” icon=”” iconflip=”” iconrotate=”” iconspin=”no” iconcolor=”” circlecolor=”” circlebordersize=”” circlebordercolor=”” outercirclebordersize=”” outercirclebordercolor=”” image=”” image_id=”” image_width=”” image_height=”” link=”” linktext=”Read More” link_target=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””]

Key off.
Reconnect all connectors.
Key on.
Pull out red Service Switch on PEC.
Clear codes, see Clear Inactive Faults.
Drive the vehicle and attempt to reset the code.
Check for codes, see View Active and Inactive Faults.
- If no codes, test is complete.
- If fault Code 118 appears, find error in testing, go to Step 1.
- If a code other than 118 appears, see Fault Code Index List.

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