AEM MoTeC LTC to CD Dash User manual

SETUP GUIDE
This product is legal in California for racing vehicles only and should never be used on public
highways. AEM Performance Electronics, 2205 W. 126th Street Unit A, Hawthorne, CA 90250,
Phone: [phone] Fax: [phone]
MoTeC LTC to CD Dash
Supported Devices
MoTeC LTC / LTCD / LTC NGK / LTCD NGK
CAN Bus Wiring
AEM CD has 2 separate CAN ports. For 3rd party devices, AEM recommends you use AEM CAN Bus 2, whose
connections are contained in a 2 pin Deutsch DTM connector. On older harnesses it may be in an unterminated,
twisted/shielded flying lead in the dash harness.
MoTeC LTC (CAN HIGH) AEM CD "CAN 2" Pin 1 (CAN 2+), Gray wire in twisted/shielded pair
MoTeC LTC (CAN LOW) AEM CD "CAN 2" Pin 2 (CAN 2-), Black wire in twisted/shielded pair
The AEM CD Dash has a software selectable CAN termination resistor. Each network needs 2 terminating
resistors, one at each end. The LTC wideband does not have an internal terminating resistor and relies on external
Terminating plugs. You can either use those or replace one of them with the internal CD Dash resistor. You must
have 2 in total, one at each end of the network.
MoTeC LTC Software Setup
The MoTeC LTC Manager software is not required if using a single LTC or LTCD unit pre-configured by MoTeC.
The DBC file provided for the LTC/LTCD by AEM matches this default configuration.
Supported Channels
The AEM CD Dash supports 16 unique channels transmitted from the MoTeC LTC and 32 from the LTCD.

SETUP GUIDE
This product is legal in California for racing vehicles only and should never be used on public
highways. AEM Performance Electronics, 2205 W. 126th Street Unit A, Hawthorne, CA 90250,
Phone: [phone] Fax: [phone]
CH
CDDash CHANNEL NAME
CH
CDDash CHANNEL NAME
1
LTC1_BattVolts_raw
17
LTC2_BattVolts_raw
2
LTC1_HeaterDutyCycle_raw
18
LTC2_HeaterDutyCycle_raw
3
LTC1_HeaterFailedtoHeat_raw
19
LTC2_HeaterFailedtoHeat_raw
4
LTC1_HeaterOpenCircuit_raw
20
LTC2_HeaterOpenCircuit_raw
5
LTC1_HeaterShorttoGND_raw
21
LTC2_HeaterShorttoGND_raw
6
LTC1_HeaterShorttoVBATT_raw
22
LTC2_HeaterShorttoVBATT_ra
w
7
LTC1_Index_raw
23
LTC2_Index_raw
8
LTC1_InternalFault_raw
24
LTC2_InternalFault_raw
9
LTC1_InternalTemp_Raw
25
LTC2_InternalTemp_Raw
10
LTC1_Ip_raw
26
LTC2_Ip_raw
11
LTC1_Ipn_raw
27
LTC2_Ipn_raw
12
LTC1_Lambda_raw
28
LTC2_Lambda_raw
13
LTC1_Ri_raw
29
LTC2_Ri_raw
14
LTC1_SensorControlFault_raw
30
LTC2_SensorControlFault_raw
15
LTC1_SensorState_raw
31
LTC2_SensorState_raw
16
LTC1_SensorWireShort_raw
32
LTC2_SensorWireShort_raw
AEM Setup in DashDesign
AEM has provided some pre-configured layouts that can be easily adapted to accept, display and log (if using
logging version of CD Dash) the CAN bus channel data from a MoTeC LTC or LTCD. The following steps will show
you how to quickly setup your LTC/LTCD to work with an existing AEM DashDesign Layout. A MoTeC LTC was
used for this example but the same steps would be used to setup a LTCD / LTC NGK / LTCD NGK.
1. Visit www.aemelectronics.com/forum and scroll down to the CD Dash forum. This is a great place to find
answers to all AEM Dash related questions you may have.
2. Open your layout in AEM DashDesign.
3. Click the “Setup” drop down and then select “Display…”.

SETUP GUIDE
This product is legal in California for racing vehicles only and should never be used on public
highways. AEM Performance Electronics, 2205 W. 126th Street Unit A, Hawthorne, CA 90250,
Phone: [phone] Fax: [phone]
4. Under the “CAN Receive” tab, click the drop down next to “Show” and select “Port 2”

SETUP GUIDE
This product is legal in California for racing vehicles only and should never be used on public
highways. AEM Performance Electronics, 2205 W. 126th Street Unit A, Hawthorne, CA 90250,
Phone: [phone] Fax: [phone]
5. Under the “CAN Receive” tab, select “Import CAN…”

SETUP GUIDE
This product is legal in California for racing vehicles only and should never be used on public
highways. AEM Performance Electronics, 2205 W. 126th Street Unit A, Hawthorne, CA 90250,
Phone: [phone] Fax: [phone]
6. Navigate to the .aemcan (dbc) file for your application. Select the file and click “Open”.

SETUP GUIDE
This product is legal in California for racing vehicles only and should never be used on public
highways. AEM Performance Electronics, 2205 W. 126th Street Unit A, Hawthorne, CA 90250,
Phone: [phone] Fax: [phone]
7. In the CAN Import window you may expand the drop downs and see all of the available CAN channels for your
device. You may choose to import all of the channels available or you may select only the channels you wish
to display. Just be sure to include “LTC1_Lambda” (and “LTC2_Lambda”if applicable) as a selected channel.
For this example we will include all available channels. If using a LTCD, you will see twice as many channels
available here. Once you have selected the channels you wish to import, click “Import”.

SETUP GUIDE
This product is legal in California for racing vehicles only and should never be used on public
highways. AEM Performance Electronics, 2205 W. 126th Street Unit A, Hawthorne, CA 90250,
Phone: [phone] Fax: [phone]
8. In the Setup Editor under the “CAN Receive” tab Port 2, check to make sure the channel names you selected
to import are present. If they are not, go back to step 4 and try again. As you can see below all of the

SETUP GUIDE
This product is legal in California for racing vehicles only and should never be used on public
highways. AEM Performance Electronics, 2205 W. 126th Street Unit A, Hawthorne, CA 90250,
Phone: [phone] Fax: [phone]
channels for LTC1 are present.
9. Find the output “AFR1” and set its Primary Input to “LTC1_Lambda” or select “Insert” to create a new
channel. Name your new channel LTC1_AFR or similar so it is easy to keep track of. Set the Primary Input to
“LTC1_Lambda”.
10.Now you need to select the correct conversion for your fuel type and preferred display units. Select the drop
down under the “Operation” column for AFR1 (or your new channel) and scroll down to “Convert Lambda to
AFR Gas (Stoich 14.65)” or whichever one matches the stoich ratio of your fuel.

SETUP GUIDE
This product is legal in California for racing vehicles only and should never be used on public
highways. AEM Performance Electronics, 2205 W. 126th Street Unit A, Hawthorne, CA 90250,
Phone: [phone] Fax: [phone]
11.Next, open a page in your layout that displays AFR. Double click on the afr value or needle/bar graph you wish
to use to display AFR. This should open the “Value Editor”, “Dynamic Needle Gauge Editor” or “Bar Editor”
window. Click on the “Input” drop down and select the channel “AFR1” or the channel you created. Click “Ok”.
Do this for every location in your layout where you wish to display AFR.
12.Save the layout. Once the layout has been saved connect the dash to your computer and press “Ctrl+U” or
“File>Upload to Display…” Once the upload has completed unplug the dash from the computer. You should
now be able to view the AFR from your MoTeC LTC/LTCD device on the AEM CD Dash.