ISSUE DATE:
SERVICE BULLETIN SUBJECT:
VINs or MODELS AFFECTED:
COMPLETE BY:
SERVICE BULLETIN #:
LABOR OPERATION CODE:

5-13-2022
E2 V2 Body Controller Software Update
Service Specified Buses
Next Service Opportunity
SC-22-58
HC54H

NOTICE! It is expected that this process will require one hour per bus. Please
schedule appropriately to minimize vehicle downtime.

E2 V2 BODY CONTROLLER SOFTWARE UPDATE
Retrofit Description:

This procedure describes the process of updating the Body Controller Software to the latest version.

Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

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Summary of Software Changes

The high-level body controller updates are listed below.
•

Updated the amber and red low-voltage battery icons diagnostics, LV battery bar graph, and
LV digital readout that is displayed on dash. SPN_520662_FMI_18 only occurs when the
battery equalizer is reporting a voltage below 23.75V with the high-voltage active for at least
two minutes.

•

A customer requested the ability to turn off the Customer Switched Power while charging. This
EEPROM will turn off/on the Customer Switched Power Relay Enable Output MUX2.1E Pin 17
while a charger is connected. (TRUE or 1 = Output ON while charging, FALSE or 0 = Output
OFF while charging). To accommodate this request and not affect the fleet, we've created
EP_bo_CustSwPowerwhileCharge a Level 1 EEPROM. This will make it so Customer PDT
Licenses will not have the ability to see this EEPROM.

•

Created EEPROM "EP_usi_DOOR_CSFStandStillOverride" This EEPROM will give the driver
the ability to open and close the door at any speed between 1 and 15 mph. The number that is
written for this EEPROM will represent the speed in which the front door can be opened or
closed, anything higher than the number set, the doors won't operate. Above the set speed,
the doors will automatically close and once it drops below that speed the door will
automatically open unless manually closed by the driver.
NOTE: The Proterra legal dept requires that any customer who enables this EEPROM
above 5mph sign a liability release.

Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

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Tools/Programs Required
Tools Required:
• Laptop Computer
• Nexiq USB-Link 2

Programs Required:
• Proterra Diagnostics Tool

Software Files Required / Preparation

IMPORTANT: NEVER access the software from the USB memory device, ALWAYS copy the
software files to your computer hard drive and access the software from this location. Secure the
bus with the Vehicle Master Disconnect turned to the “ON” position in the rear of the bus.

Component

Part Number

Version

Body Controller

061380

6.12.0

It is recommended that you copy the entire “service bulletin files” folder to your local machine in order
to more effectively keep track of the software versions you are deploying:
\\bus.local\files\Engineering\Service Bulletins\Service Bulletin Files for SC-22-58\

Service Bulletin Execution

1. Update the Body Controller using the process in Appendix A

Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

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Appendix A

BODY SOFTWARE UPDATE PROCEDURE

Description

This document contains the necessary information to update the Body Controller on a Proterra
Vehicle. This controller provides the control algorithms for body functionality on 800V models. This
covers the control logic relating to driver inputs and display, stop requests, doors, interior and exterior
lighting, and ramp control.

Tools/Programs Required
Tools Required:
• Laptop Computer
• Nexiq USB-Link 2

Programs Required:
• Proterra Diagnostics Tool

Software Files Required / Preparation

To program the body controller, you will need a *.ZR32A_A data file. This file contains the necessary
firmware files and a baseline configuration to provide an operational bus body. The bus may need to
be configured to match customer specific functionality after programming.
If the vehicle has already been configured, the Proterra Diagnostics Tool will attempt to automatically
carry the configuration information forward into the new software version.
If needed, configuration information is contained in the released customer configuration
documentation. Ensure that you also have the configuration definition for the customer’s vehicle.
IMPORTANT: NEVER access the software from the USB memory device or network drive,
ALWAYS copy the software files to your computer hard drive and access the software from this
location.

Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

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Preparing the Vehicle to be Programmed

When programming a vehicle, it is critical that the low-voltage batteries remain connected throughout
the process. Ensure that the LV batteries are fully charged before starting the process. If they are
low you can use the vehicle to recharge them buy turning on high-voltage, or you can place the bus
on a low-voltage charger for the duration of the process.

Connecting to the Vehicle

This process will guide the user to connect to the vehicle with the Proterra Diagnostics Tool.
1. Power on and login to the Proterra-Supplied laptop or a comparable PC that has the Proterra
Diagnostics Tool software installed with a valid license.
2. Turn on the 12/24V rear Vehicle Master Disconnect located at the curbside rear charge port
access panel.
Vehicle Master
Disconnect

3. Connect the Nexiq USB Link2 device to the laptop and to the OBDII Diagnostic Port located in
the streetside wheel well box.

Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

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4. Turn the Driver’s Master Switch to the “ACC” position.

5. On the laptop, double-click on the Proterra Diagnostics Tool software icon to start the software.

6. When the program opens, read and click “OK” for the high-voltage safety prompt.
7. On the Home tab, select the appropriate device from the drop-down menu and click “Connect”.

8. Once the Proterra Diagnostics Tool has connected to the vehicle, you will have a VIN number
and connection status displayed on the Home screen, and tabs available to navigate. If you do
not, double check that the low-voltage batteries are connected and that the Nexiq tool is
plugged in.

Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

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Download and Store Existing Parameters

Sometimes you might want to download and store the customer specific parameters from the vehicle.
This can be useful when comparing two vehicles that are behaving differently, or if you are replacing
the ZR32A controller on a vehicle.
1. After the first vehicle has been completed and verified, disconnect the Proterra Diagnostics
Tool and then reconnect.
2. Navigate to the Configuration tab and click the “Get Parameters” button. This will download the
latest parameter set to the “C:\Logs” folder on your machine.
Get Parameters
Button

3. In windows file explorer, navigate to the “C:\Logs” folder. Copy the latest downloaded *.zip file
to a folder for the specific customer and vehicle.

Copy!

Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

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4. Do not rename the file as the tool will follow the naming convention when reloading the file.

Update Using the Proterra Diagnostic Tool

1. Navigate to the CONFIGURATION tab in the left menu.

Click
CONFIGURATION

2. If this is a replacement controller, select the “SET VIN” and program the controller to match the
vehicle VIN, then proceed to step 3. If not a replacement controller, proceed to step 3.
3. Select the option for Body Firmware “START FLASH”.

Beside Body Firmware,
Click START FLASH

Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

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4. In the pop-up window, select the software flash file to load to the controller. The correct file is
named “061380_6_12_0.”

5. The Programming window will come up and will take a few minutes to complete. The process
will flash five different files to the controller.
6. After the controller is updated the tool will automatically try to copy the original configuration to
the new software. Since there is a possibility that configuration options change it is important
to check the configuration after restarting the vehicle.

7. Once the process has finished, cycle power to the bus by moving the Driver’s Master Switch
back to the “OFF” position before continuing.
8. Return the bus to service.

Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

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