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ECOEMS950
Eco-Star – Engine Monitor Shutdown
2014-2022 Isuzu NPR Gasoline Engine Only
2019-2020 Chevy LCF (Low Cab Forward Trucks)
Contact InterMotive for additional vehicle applications

Introduction

The ECOEMS950 is a combination Eco-Star (ECO) and Engine Monitor Shutdown (EMS)system.
The ECO portion is an automatic engine stop/start system designed to enhance fuel economy, lower vehicle emissions, and allow an operator to remotely control engine stop/start. The engine is automatically stopped to prevent unnecessary idling. Restarts can be automatically triggered by low battery voltage, Service Brake application, or user restart requests. An optional thermistor may be attached to the Engine On input if a temperature triggered auto-restart is desired. A cab tilt switch input disables the system if the cab is tilted and auto-restarts are preceded by a warning beeper for safe system operation.
The EMS portion continuously monitors engine and transmission temperatures and engine oil pressure. If any of these parameters falls outside of its safe operating range, EMS initiates a shutdown warning. After sounding a warning and flashing the display, EMS will shut off the engine when the vehicle comes to a stop (transmission in any gear). The EMS system also provides auxiliary inputs which can allow a 3rd party system to request an engine shut down, such as a fire suppression system.

EMS Parameters that trigger a Warning and Shutdown:

• Engine Coolant Temperature > 250° F
• Transmission Fluid Temperature > 300° F
• Loss of Engine Oil Pressure
• Auxiliary input activated (connected to 3rd party system)

EMS Data Logger – EMS records shutdown events in memory and what triggered them, along with driver response. The ten most recent events are recorded and can be displayed on a laptop. This requires a USB to Serial Communication cable which can be purchased separately from InterMotive.

Installation Instructions

Disconnect vehicle battery before proceeding with installation

WARNING Disconnect the battery to prevent setting a check engine light.

IMPORTANT—READ BEFORE INSTALLATION

It is the installer’s responsibility to route and secure all wiring harnesses where they cannot be damaged by sharp objects, mechanical moving parts and high heat sources. Failure to do so could result in damage to the system or vehicle and create possible safety concerns for the operator and passengers. Avoid placing the modules where they could encounter strong magnetic fields from high current cabling connected to motors, solenoids, etc. Avoid radio frequency energy from antennas or inverters next to the module. Avoid high voltage spikes in vehicle wiring by always using diode clamped relays when installing upfitter circuits.

ECO and EMS Modules Installation

Remove the lower dash panel below the steering column and find a suitable location to mount the modules. Mount the modules in an area away from any external heat sources (engine heat, heater ducts, etc.). Do not actually mount the modules until all wire harnesses are routed and secure. The last step of the installation is to mount the modules. When installing the harnesses, leave several inches of take-out such that the modules can be removed if necessary.

Data Link Harness (with two 6-Pin Connectors)

1. Locate the ECOEMS950 data link harness in the kit. See picture. This will “T” into the vehicles OBDII connector.
2. Locate the vehicles OBDII Data Link Connector located below the lower left dash panel under the steering wheel area. See picture.
3. Remove OEM OBDII connector by pinching the sides and pushing it out the rear of the OEM bracket.
4. Install the white ECOEMS950 data link harness OBDII connector into the OEM bracket by pushing it in from the rear.
5. Plug the red connector from the ECOEMS950 data link harness into the vehicles OBDII connector. Ensure the connection is fully seated and secure with the supplied wire tie.
6. Secure the harness so that it does not hang below the lower dash panel.
7. The two 6 pin data link harness connectors are wired identically. Plug one into the ECO module and the other into the EMS module. Modules are labeled appropriately.

OEM OBDII bracket with White ECOEMS950 connector installed, with Grey OEM connector in lower right

ECOEMS950 Ignition Switch Harness
This harness T’s into the vehicles ignition switch and runs signals to both the ECO and EMS modules using two 12 pin connectors.
Note that the two 12 pin connectors are wired differently and MUST be correctly plugged into their respective ECO and EMS modules.
Each 12 pin connector is labeled indicating which module it plugs into.

Ignition switch connectors mate with Isuzu switch and harness

1. Remove the upper and lower steering column trim covers by removing three Torx screws from the bottom cover.
2. Locate the ignition switch connector and unplug it from theswitch.
3. Install the ECOEMS950 ignition switch harness between theIgnition Switch and the OEM harness.
4. Route the ECOEMS950 harness down the steering column and secure with cable ties.

12 pin ECO and EMS connectors on ignition switch harness

Back side of Isuzu ignition switch with ECOEMS950 harness “T” installed between the switch and OEM harness.
NOTE: the 12 pin connectors MUST be correctly plugged into their respective module. They are labeled which module they connect to.

1. Plug the 12 Pin ECO connector into the ECO module.
2. Plug the 12 Pin EMS connector into the EMS module.
3. There are two black wires with eyelets which must be connected to chassis ground. Find an appropriate location and ground the harness eyelets with a screw.
4. There are two sections of the ignition switch harness. These are normally supplied already plugged together with their 4 pin in-line connectors, but allow installing these sections separately if desired.

ECO I/O Features and Descriptions: (Solder and heat shrink all connections)
Cab Tilt Disable Switch
The Cab Tilt Disable Switch in NOT an optional input. This grounding connection MUST be made in order for the module to operate. It is one of the most important safety features and time must be taken to properly install the switch such that a ground contact is made only with the cab locked in downward position.
Pin #11 (Brown wire) of the 12 pin connector is the Cab Tilt Disable input. The absence of a ground signal when the cab is tilted prevents auto engine start/stop. As an important safety feature, this connection must be made to prevent auto-restarting when someone is working on the engine with the cab tilted forward.
(Solder and heat shrink all connections)
Cab Tilt Disable Switch 
The proximity sensor provided in the ECOEMS950 kit will provide the signal to the module when the cab is in the upright position. The sensor is made up of a magnet
(no wires attached) and the magnetic switch (black and brown wires attached). The magnet will be installed on the cab tilt locking arm. The magnetic switch will be installed on the frame rail where the magnet will come into close proximity.
With the cab in the upright and locked position, mark where the locking arm lines up with the frame rail. Choose an appropriate location on the locking arm to mount the magnet. Drill two 4.40mm (11/64”) holes on the arm aligned with magnet holes. Secure magneto arm with supplied self tapping screws. Mount the switch in the same fashion on the frame rail directly across from the magnet (with the cab in upright and locked position). Route switch wires into cab. Ground the eyelet attached to the black wire. Attach male bullet connector to female bullet connector on brown wire from module.

Ground located inside cab, driver’s side left kick panel

Locking arm (upper left) and frame rail (lower right
Engine Off Request Input
Pin #2 (White wire) of the 12 Pin Connector is an Engine Off Request input. Grounding this wire with a switch allows remote engine shutoff capability. Keeping this input  rounded will keep the ignition switch power off (exceptions: a remote Engine Restart request OR a low battery will restore ignition power and restart the engine). Leaving the ignition off after an Engine Off request reduces the draw on the battery t a minimum, allowing the greatest amount of time between low battery restarts.
Engine On Request Input
Pin #5 (Green wire) of the 12 Pin Connector is the Engine On Request input which may be wired to vehicle equipment which requires the engine to continue running. This switch input must provide a ground when restart is desired. Solder and heat shrink all connections. This input also acts as a Shutdown Inhibit. As long as it is active (grounded), the Anti-Idle shutdown timer and the Request Engine/Ignition Off inputs will not turn the vehicle off.
An optional thermistor may be attached to the Engine On input if a temperature activated auto-restart is desired. The thermistor option may be used to auto restart the engine as a result of either cold or hot temperatures. For example, it may be used to prevent the engine from getting too cold in severe environments. Mount the thermistor in a location where it cannot be damaged by sharp objects and mechanical moving parts such as the Park Brake or tilt steering wheel mechanisms.

• Low Temperature Thermostat Engine Cycling Assumes the cabin heater is turned on. If the cabin temperature does not increase 3 degrees in 6 minutes after a low temperature restart the thermostat is disabled until the key is cycled.
• High Temperature Thermostat Engine Cycling Assumes the cabin air conditioner is turned On. If the cabin temperature does not decrease 3 degrees in 6 minutes after a high temperature restart, the thermostat is disabled until the key is cycled.

Security Input
Pin #1 of the 4 Pin Connector is an optional security input. When this input is grounded by a switch, the engine will auto shut off if the Transmission is shifted out of Park.   hidden keyed switch could be used for added security. Connect one of the provided Molex pins to an installer supplied wire and insert into cavity 1 of the 4 pin Molex header. Connect free end of wire to installer provided switch
Aux Battery Input (Up to 36 Volt)
Pin #4 (Gray wire) of the 12 Pin Connector is an auxiliary battery voltage monitor input. It measures the analog battery input and can trigger a low battery restart when this  nput falls below a user defined level. By default this trigger is disabled, but it may be enabled via a laptop connection. Contact InterMotive for details or refer to Eco-Start Application Note.
Restart Beeper
Pin #3 (Orange wire) of the 12 Pin Connector drives a warning beeper that will sound for 2 seconds prior to all restarts except Service Brake restarts. The beeper is shared with EMS950.
Un-Interrupted Load Control
Eco-Star shuts down the vehicle’s engine by simulating a “key off” condition. All electrical loads that normally shut off when the key is turned off will lose power as long
as the Engine Off Request  isactive. This may  not bedesirable for all loads and can be avoided by wiring an external relay to Eco-Star’s Ignition Power Signal Pin #9 Yellow wire (1 Amp max, see below).
The Ignition Power Signal will normally activate only when the key is in the Run/Start position. However, when Eco-Star is commanding Ignition Off, the Ignition Power Signal becomes Key In Ignition. These loads will drain the battery faster. Use of LED lights and higher capacity batteries is recommended.
Equipment Enable Output
The equipment enable output will force the user to depend on Eco-Star stop/start capability in order to use their equipment. This load is only active when the Request ngine  ff input is active. While this input is active, Eco-Star will cycle the engine based on primary/secondary battery Voltages and the Request Engine On input (which now includes the optional thermostat function). The Equipment Enable Load Output is similar to the Un-Interrupted Load Output. The difference is that this load ensures that Eco-Star is cycling the engine. In the case of the Un-Interrupted Load Output, there are ways to disable the stop/start capabilities of Eco-Star (disable idle timer or set to 30 minute idle time) while retaining the output.
The Pin #9 (Yellow wire) and Pin #1 (Pink Wire) outputs are capable of driving up to 1 Amp max. When connecting to a relay, always use a diode clamped relay, such as  igikey part number PB682-ND, or add a diode across the relay coil as shown, observing the required polarity. The use of a relay without diode clamped suppression causes high voltage spikes when the relay coil is deactivated. These voltage spikes may cause damage or intermittent behavior to onboard vehicle control modules. Resistors and other methods  of clampingare not as effective and  are notrecommended.

EMS LED Display Panel

1. Locate a suitable position on the dashboard within view of the driver for mounting the EMS LED Display Panel. The length of the display harness is 40”. This is the maximum distance the display can be mounted from the EMS module.
2. Drill a 5/8” hole in the dashboard where the center of the display will be located, being careful not to damage anything behind the dashboard.
3. Run the free end of the display harness under the dash and out through the 5/8” hole.
4. Attach the end of the display harness to the EMS LED Display Panel.
5. Ensure panel is level, and secure using the supplied screws.
6. Attach the 4 Pin EMS LED display harness to the EMS Module’s 4-pin connector.

EMS Control Outputs and Input Connections – 12-pin I/O connector
A harness with a 12-pin connector is provided with the following wires. Note that most of these signals are optional and not all of these wires will be used in any given application. Unused wires should be left as “no connects” and taped up to prevent contact. Connect the appropriate wires that your application requires. Solder and tape/heat shrink all connections.

EMS 12-pin connector pin out definition

• Pin #1 – Not Used.
• Pin #2 – Gray – Optional EDR Input – Engine Disable Request Input. (Ground)
• Pin #3 – Not Used.
• Pin #4 – Yellow – Optional EDR Input – Engine Disable Request Input. (12 V)
• Pin #5, #6, #7 – Not Used.
• Pin #8 – Orange – Warning Indicator Output. Connected to beeper.
• Pin #9 – Blue – Optional EDC Output – Engine Disabled Confirmation. (12 V)
• Pin #10 – Connected to ignition relay.

• 11, #12 – Not Used.

EMS Engine Shutdown Request Input (Optional)
The EMS 12 pin connector Pin #2 Gray wire can be connected to a grounding Engine Disable Request input which will activate the Engine Shutdown System and shut off the engine.
Warning: If the 12 pin connector Pin #2 Gray wire is shorted to ground, the engine will turn off when the vehicle speed equals 0 MPH.
Engine Shutdown Confirmation Signal Output (optional)
The EMS 12 pin connector Pin #9 Blue wire will provide a 12V confirmation output when the Engine is shutdown. This indicates to an auxiliary system that the vehicle has been disabled.
EMS Shutdown Request
The EMS 12 pin connector Pin #4 Yellow wire input can be connected to a 12V Engine Shutdown Request which will activate the Engine Shutdown System and shut off the engine (for use with auxiliary systems, such as fire suppression, that require an engine shutdown).
EMS Warning Indicator Beeper

1. Locate an accessible location to mount the warning indicator beeper so that it is audible to the driver.
2. Drill a 1 1/8 inch hole to mount the beeper or wire tie it up under the dash.
3. Connect the EMS 12 pin connector Pin #8 Orange wire to the beeper positive (+) terminal.
4. Connect the Black wire to the beeper negative (-) terminal.
5. Attach the beeper Black wire eyelet to chassis ground.
6. The bezel on the beeper can be rotated for volume control.

Mounting the EMS Module
Ensure all the harnesses are properly connected and routed, and are not hanging below the dash area. Mount the EMS module as described on page two and secure using screws or double sided tape.
Do not mount the ECO at this time but leave it visible for the final testing procedure.
Reconnect the vehicle battery

Post Installation Testing

ECO Testing: (ECO module must be visible for this test)
Several conditions will prevent Eco-Star from auto-shutdown in test mode: Trans Range Not in Park,
Service Brake Pedal Applied, Cab tilted, Vehicle Speed not 0, or Engine Start Request Active.

1. With key in the run position and engine off, apply ground to the gold circle on the module labeled “TEST”. The status LED will start blinking; Eco-Star is now in test mode. In test mode the system functions without monitoring these pre-conditions: Engine Temp, Battery Voltage, or Ambient Air Temp.
2. Start the engine with transmission in Park and Cab locked in downward position.
3. Activate Engine Off Request input. Verify engine shuts off and ignition power is off (simulates key off4. Release Engine Off Request input. Verify ignition power is  estored. Engine will not start (low battery could cause a restart).
4. Activate the Engine On Request input. The Engine will automatically restart.
5. Release the Engine On Request input and confirm the module shuts off the engine after the idle timer has expired (default 15 seconds). Note: Applying the Service  Brake will prevent the timer from counting down and shutting off the engine.
6. Repeat step 4 with cab tilted forward. As a safety feature, the system must not start or stop the engine when the cab is tilted. If the Engine Start Request starts engine with cab tilted, check cab tilt switch wiring.

Do not put vehicle in service unless cab tilt switch prevents Eco-Star from starting engine. EMS testing: (Ensure vehicle is safe to drive for this test)

1. With transmission in Park and Park Brake set, start the engine.
2. Verify the LEDs prove-out for approximately two seconds on EMS LED Status Panel.
3. Push and hold down the yellow Restart/Silence button for 10 seconds to enter test mode. Release the button once the warning sounds.
4. The Shutdown LED will flash and Beeper will sound for three seconds.
5. The Shutdown LED will illuminate solid and the engine will shut down.
6. Push and release the Restart/Silence button to restore ignition function.
7. Restart the vehicle. Test drive vehicle, maintaining a speed above 5 MPH.
8. While driving vehicle, push and hold down Restart/Silence button for 10 seconds to enter test mode again.
9. Briefly push Restart/Silence button to silence the beeper.
10. Slow the vehicle speed to 0 MPH. Verify the Shutdown LED illuminates solid and the engine shuts down.
11. Push the Restart/Silence button to regain ignition control. Verify engine will restart using the key.
12. In vehicles with auxiliary systems which connect to EMS to request engine shut down, a shutdown request can be simulated by either grounding the pin #2 Gray wire, or applying 12V to pin #4 Yellow wire. Verify the system shuts down the engine when requested.

Final assembly
Ensure all harnesses are properly routed, and are not hanging below the dash area.
Reinstall the steering column trim cover and under dash panel. Installation is complete.

ECOEMS950

Appendix A
Tera Term Setup

1. A special Serial Communication Cable is available from Intermotive to use this method. You will be required to download and install the proper USB driver the first time you use this cable. All driver files are located online at: http://www.intermotive.net

2. Find the correct drivers for your system and follow the steps to download the latest version (located under the “Driver Version” heading). If unsure about the installation process, contact InterMotive for assistance.

3. Download and install the latest release of the Tera Term application from: http://www.intermotive.net

4. Plug one end of the cable into your PC’s USB port
   and with the vehicle’s key in the off position, plugthe other end into the module’s COM port.

5. Open the Tera Term application. The Tera Term‘New Connection’ window will open (see picture).

6. Click the ‘Serial’ button and choose the COM Port
   that the Intermotive Download Cable is connecteto (typically the highest numbered COM Port).
   Click ‘OK’.

7. Under the ‘Setup’ tab, choose ‘Serial Port’.

8. In the next window, you will need to change several of the default parameters for the Port Settings as follows:
   •Baud rate: 57600
   •Data: 8 bits
   •Parity: None
   •Flow Control: None
   •Transmit delay: 0 msec/char 0 msec/line
   •Click ‘OK’.

9. Tera Term setup is now complete.

Reconfiguring Eco-Star Parameters: (optional)
Requirements

• USB to Serial Communication cable (Intermotive part number S-H37A1) which is a one time purchase. This is required for all programming.
• Laptop computer (programming is done while the module is on the vehicle).

Reconfiguring

1. Complete Tera Term Setup on the first page of Appendix A.
2. Turn the vehicle key to the ON position. The ECO950 module will wakeup and text will be displayed on the open Tera Term window.
3. If nothing appears, unplug the 6 pin Data Link connector going into the ECO950 module, wait several seconds, and plug the connector back in.
4. If still nothing appears, go to File > New Connection and try re-configuring the HyperTerminal as described above. If unsuccessful, contact InterMotive for further assistance.
5. With communication established, type in the word “config” (followed by the enter key) and the screen will look like Screen Shot 1.
6. Type the number of the parameter to be changed followed by the enter key. Follow prompts to change selected parameter.
7. Press escape when parameters are set correctly.
8. When finished, key off ignition and disconnect the Communication cable.
9. See Eco-Star App Note for more Eco-Star configuration details.

Screen Shot 1
Viewing EMS950 Shutdown Record
Follow these steps to view the record of the 10 most recent engine shutdown events:

1. Complete Tera Term Setup on the first page of Appendix A.
2. Turn the vehicle key to the ON position. The EMS module will wakeup and text will display on the open Tera Term window.
3. If nothing appears, unplug the 6 pin connector going into the EMS module, wait several seconds and plug the connector back in.
4. If still nothing appears, repeat step 1-2, contact InterMotive for further assistance.
5. With communication established, type in the words “get data” followed by the enter key. A record of the 10 most recent engine shutdown events will display.
6. The screen data can be captured to the Windows clipboard for later printing by using the Edit copy command.
7. When finished, key off and disconnect the Communication cable.

Leave in vehicle Operating Instructions ECOEMS950 Eco-Star – Engine Monitor Shutdown
System Overview
The ECOEMS950 is a combination anti-idle and engine monitor shutdown system. It automatically shuts off the engine if the vehicle is left idling for an extended period of time with no operator input. The system will then cycle the engine based on various parameters. It will also sound a warning beeper and flash an indicator if the temperatures get too hot or the engine loses oil pressure. It will then shut down the engine when the vehicle comes to a stop. The system also provides data logging whenever an engine shutdown event occurs.
Eco-Star (ECO) Operation
Eco-Star provides enhanced fuel economy and lower vehicle emissions for customers by limiting engine idle time. Restarts can be automatically triggered by low battery voltage, remote equipment operator requests or thermostat restart trigger (if enabled).
The Engine will be auto-stopped when the idle timer expires. The default timeout period is 15 seconds of idling in Park. Note that the Service Brake and the Engine On switch will prevent idle timer shutoff. Once the engine has been auto-stopped, Eco-Star monitors the main battery voltage (an auxiliary battery may also be monitored). If either fall below a minimum restart voltage, the module will sound an alarm for 2 seconds and auto-restart the engine to recharge the batteries. The default restart value is 12.0 Volts for the main battery (aux battery input is disabled). Once the main battery charges above 13.5 volts, a recharge timer of 60 seconds begins that will turn off the engine again. The Engine Off Request is an optional remote switch that when activated turns the engine off by switching off ignition power. The ignition remains off until: 1) Engine Off Request is removed or 2) an engine auto-restart is triggered. The module keeps ignition off to reduce current draw and delay a low battery restart. The Engine On Request switch is an optional remote trigger that will start the engine and prevent all autostops from occurring. If the vehicle is equipped with the optional thermistor, the vehicle may also autorestart based on temperature. If a security switch has been installed and is “on”, the engine will be turned off if the transmission is shifted out of Park. This is designed to prevent theft and/or unauthorized driving. Default requirements for auto engine shut off Transmission in Park (vehicle not moving), Cab locked in downward position, Service Brake not applied, Battery Voltage greater than 12.0 Volts (may differ from default setting), no thermostat trigger, and Engine Restart switch must not be “on” (this switch input overrides the Engine Off Request and Idle Timer).
Note: The module will not respond to an Engine Off Requests for 5 seconds after the engine is started.
Default requirements for auto engine restart
Cab locked in downward position, Engine must have been auto-stopped, Transmission in Park, and the key in the Run position.
Once above conditions are met, the engine will restart when the Engine On Request is activated, a low battery is detected or Thermostat restart trigger.

Engine Monitor Shutdown (EMS) Operation

The system consists of a control module, a beeper, an LED panel with several indicators, and a “silence” button for the beeper.

The Engine Monitor and Shutdown (EMS) System monitors Engine Coolant Temperature, Transmission Coolant Temperature, and Engine Oil Pressure. If any of these parameters transition above their normal operating range, the system will initiate a flashing and beeping warning to alert the driving to the problem. If the vehicle is stopped, the EMS system will shut down the engine. If the vehicle is being driven, it will not shut down the engine until the vehicle comes toa stop.
When the ignition is turned on, the EMS powers up and the LED panel lights up for several seconds as part of a “prove out” sequence. Once prove out is complete, the module begins monitoring the vehicle’s parameters. It uses this information to determine whether operating conditions are safe or potentially damaging to the engine. If any parameters are above their normal operating range, the EMS system will issue a shutdown warning which consists of beeping and flashing the LED panel.
The driver is able to silence the beeper for 30 seconds by pushing the “Silence” button.
The driver should immediately move the vehicle to a safe location and bring it to a stop.
Once the vehicle comes to a stop, EMS will shut off the engine in an effort to prevent further engine damage.
Additionally, there are several inputs to the EMS system which can allow auxiliary equipment to shut the engine down (i.e. fire suppression systems).
The EMS records the shutdown event and why it was triggered. It also logs silence button activations. The ten most recent events are stored in the module’s memory. To extract this information, the USB to Serial Communication cable (part number S-H37A1) is required, and can be purchased separately from InterMotive.
Engine Shutdown can be triggered from any one of the following conditions:

• Engine Coolant Temperature greater than 250° F. Engine Temperature LED illuminates.
• Transmission Fluid Temperature greater than 300° F. Transmission Temperature LED illuminates.
• Low Engine Oil Pressure. Engine Oil Pressure LED illuminates.
  • Auxiliary Engine Disable Request input will illuminate Auxiliary LED.

Submit product registration at www.intermotive.net
If the ECOEMS950 fails any step in the Post Installation Check List, review the installation instructions and check all connections.
If necessary, call InterMotive Technical Support at 530-823-1048.
ECOEMS950-011222-CAD-A

Submit product registration at www.intermotive.net
If the ECOEMS950 fails any step in the Post Installation Check List, review the installation instructions and check all connections.
If necessary, call InterMotive Technical Support at 530-823-1048.
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