Features and Parameters

The Security feature, as well as the various associated feature options and parameters can be accessed and configured using Cummins PowerSpec.

ECM Master Password
Specify the customer chosen password. This parameter allows for 'total' access to the engine control system including rights to create or change the engine passwords and recalibration. This password should be kept private to protect the engine from tampering. Also setting a public 'Reset' password will help to protect the Master password privacy.

ECM Reset Password
Specify the customer chosen password. This parameter only allows the user to read and reset engine trip information and fault codes. Many service events require the technician to read and reset inactive fault codes. Therefore, if a Master password is set without a public Reset password, technicians will be required to know the private Master password to reset faults. Setting a public Reset password helps protect the privacy of the Master password. Most fleets make their 'Reset' password known to everyone (e.g. 'shop').

Note: Master password must be set for this password to be enabled. A public Reset password should almost always accompany a private Master password. In order to set the Reset or the Adjustment password, the Master Password field need to be filled. You can enter the current master password from your engine or a new password into the Master Password fields.

Recommended Security Options
Cummins provides several main options to protect against unauthorized tampering of ECM parameter settings, which are outlined below.

Maximum Security - Private Master Password with Public Reset Password
This option allows fleets to protect against tampering with a private Master password, while allowing users who only know the Reset password to reset engine operating information, such as fault codes and trip information. This form of security is commonly recommended for larger fleets.

Note: For even higher security, many fleets also choose to keep PowerSpec Disabled on their engines which means that only licensed PowerSpec users can attempt feature edits.

Minimal Security - No Passwords with PowerSpec Disabled
This option allows full engine access only to INSITE users and licensed PowerSpec users without password entry. Non-licensed PowerSpec users will not be able to edit feature settings, but can still read/reset trip and faults. This configuration is recommended for fleets with nominal concern about electronic engine tampering, but don't want to use passwords.

Maintaining Fleet Password with a PowerSpec 'HotSpec'
Maintaining a fleet password is made simple through use of a PowerSpec 'HotSpec', by entering the fleet Master password into the Spec (usually accompanied by a public Reset password). During the Spec Transfer, the password will be configured transparently, without requiring the technician to know the password. Future transfers will also occur without technicians having to know the password, so long as the Master password in the Feature Spec matches the engine Master password.

Changing Fleet Password with a PowerSpec 'HotSpec'
Changing a fleet password is made simple through use of a PowerSpec 'HotSpec', by entering both the current and new Master passwords into the Spec. During the Spec Transfer, the password will be changed transparently, without requiring the technician to know either password.

Changing Adjustment Password with a PowerSpec 'HotSpec'
Changing a Adjustment password is made simple through use of a PowerSpec 'HotSpec', by entering both the current and new Adjustment passwords into the Spec. During the Spec Transfer, the password will be changed transparently, without requiring the technician to know either password.

Removing ECM Passwords
A known ECM password may be removed by first entering the current ECM master password to gain access, and then by setting the new password to 6 zeroes ('000000') with PowerSpec. If the ECM master password is not known, you will be unable to clear any ECM passwords without direct assistance from a Cummins distributor and proof of your authority to clear passwords.

Additional Engine Password - Adjustment

The Adjustment password is rarely needed or recommended for use.

ECM Adjustment Password

Specify the customer chosen password. This parameter allows the user to adjust electronic engine features and read/reset trip information and fault codes. This password does not provide access to edit other engine passwords or to recalibrate the engine (Master password access is require for these operations). Since most fleet security concerns are focused on the feature settings, the Adjustment security level doesn't offer much benefit above the Master password itself.

Note: Master password must be set for this password to be enabled. An Adjustment password is almost never needed and offers little or no added value. In order to set the Reset or the Adjustment password, the Master Password field need to be filled. You can enter the current master password from your engine or a new password into the Master Password fields.

Vehicle Speed Sensor Anti-Tampering

Choose this feature to activate the Vehicle Speed Sensor Anti-Tampering feature. This allows the control system to look for patterns in the vehicle speed signal that may indicate tampering (e.g., long periods of constant engine speed). If the engine determines that the signal has been tampered with, it will limit engine speed to the Vehicle Speed Sensor Maximum Engine Speed (see below) and log a fault code occurrence to the engine diagnostic system.

Vehicle Speed Sensor Maximum Engine Speed wo/VSS
Specify the maximum speed the engine can achieve when the engine control system determines the vehicle speed signal is inactive or inaccurate. This protects the engine against removal, tampering, or failure of the vehicle speed sensor.

Limiting engine speed eliminates the chance of improper vehicle operation under these conditions. Without this parameter, the inaccurate vehicle speed signal could allow for vehicle speeds in excess of the Accelerator Maximum Vehicle Speed. The range is between 1400 and 2500 rpm.

Note: This parameter will affect the maximum engine speed while the vehicle is not moving (no vehicle speed signal). If the parameter is set to 1800 rpm, the engine will be unable to exceed this speed unless the vehicle is moving.

Feature/Parameter

Range

Default

ECM Master Password - Parameter

2-6 characters

None

ECM Reset Password - Parameter

2-6 characters

None

ECM Adjustment Password - Parameter

2-6 characters

None

Vehicle Speed Sensor Anti-Tampering

Enable/Disable

Disable

Vehicle Speed Sensor Maximum Engine Speed wo/VSS

1400 - 2500 rpm

2500 rpm