Directed DS3+ User manual

Designed by Installers for Installers
INSTALLATION GUIDE
DS3+ / DS4+
2015 Cadillac CTS Sedan (Smart Key). 933.GM9 2.42.195.3
© 2021 Directed, Vista CA
This product is intended for installation by a professional installer only! Attempts to install this
product by a person other than a trained professional may result in severe damage to a vehicle’s
electrical system and components.

Introduction 3
Vehicle function compatibilities 4
Pre-installation and application warnings 5
Installation 6
Wiring diagram with T-Harness (THGMN5) 6
Wiring diagram with T-Harness (THGMN4) 7
Wiring diagram 8
Locating components in the vehicle 9
Keyport Location 10
Vehicle connections 12
Module programming 15
(For security-only programming, see next section.) 15
Module programming for security-only installations 17
Pairing remotes 18
Connecting the module 18
8556T Temperature Sensor 18
8504D Combo Sensor 18
RF Systems 18
When used in conjunction with SmartStart 19
D2D port configuration 19
Manual transmission 20
LED diagnostics and troubleshooting 21
Soft reset 23
Hard reset 23
Tach learning procedure (not needed with Virtual Tach) 24
Initializing Virtual Tach (not needed with hardwired or data tach applications) 24
Limited lifetime consumer warranty 25
Quick reference guide 26
Contents

3933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Introduction
This guide provides information on the installation of the DS3/DS3+ and DS4/DS4+ modules as a digital solution. Using these modules in a
digital configuration require the module to be flashed with vehicle specific firmware. Refer to our website (www.directechs.com) and click on
the DIRECTLINK text in the header for additional information.
DS3/DS3+ and DS4/DS4+ modules provide an all-in-one solution for most modern vehicles, and include remote start, keyless entry, security,
and immobilizer bypass capabilities. T-harnesses may also be used in many applications for easy installation.
The following methods are available to configure modules:
• Web: www.directechs.com (DS3/DS3+ and DS4/DS4+)
• Desktop Application: Directlink DT (DS3/DS3+ and DS4/DS4+)
• Mobile Device: Directlink App (DS4/DS4+ only)
When Flashing via Directlink DT (Desktop app) or via the Web, an XKloader2 will be required.
To configure via Web or DirectLink DT (mobile app):
1. Disconnect the main module from any (+) 12V power source.
2. Connect the module to your computer using the XKLoader2.
3. Follow the steps in the pop-up window that will be displayed when the module is detected.
Notes:
•Flashing via web is only possible using Internet Explorer on Windows 8, 8.1, and 10.
•This method is not compatible with any other browser (Edge, Chrome, Firefox, etc.)
•When using Windows 11 or newer, Directlink DT is mandatory.
The DS4/DS4+ module is designed to be configured using the DirectLink application through mobile devices.
To download the DirectLink mobile application, visit the Google Play or Apple store. They can also be
configured via Web and DirectLink DT. The DS4/DS4+ features are built in Bluetooth® 4.0, allowing you to
configure and control your system. The DS3/DS3+ module is not equipped with Bluetooth®, therefore is not
compatible with the DirectLink app for mobile devices.
To configure via DirectLink DT (mobile app):
1. Follow and complete the wiring diagram(s) related to your installation through the app.
2. When installation is complete, select Configure DS4/DS4+.
3. Follow the on-screen instructions.
FLASH REQUIRED!
FLASH REQUIRED!
4 White

4933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Vehicle function compatibilities
This section lists all the functions compatible with this vehicle for the installation illustrated in this guide.
Note: The telematics features listed below (with an asterisk) ONLY apply when using SmartStart.
Arm Factory Security
Disarm Factory Security
Door Lock Control
Door Unlock
Driver Priority Unlock
Trunk / Hatch Release
Fuel Capacity
* Fuel Level
Key2GO
* Odometer
Oil Life Remaining
Immobilizer Bypass-Data No Key Req'd
3x LOCK START (Start control using OEM Remote)
3x LOCK STOP (Stop control using OEM Remote)
Accessory Activation
Ignition Activation
RAP Shut Down (Retained ACC Power)
Remote Start Takeover
SmartStart
Start (Crank) Activation
Tach / RPM Output
Entry Monitoring ALL Door Pins
Entry Monitoring Hood Pin
Entry Monitoring Trunk/Hatch Pin
Factory Alarm Trigger Monitoring
Brake Status (foot brake)
E-Brake Status
Ignition Status
Tire Pressure FD
Tire Pressure FP
Tire Pressure RD
Tire Pressure RP

5933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Pre-installation and application warnings
Firmware notes: This section highlights important information for this specific firmware and will assist in pricing
accordingly, as well as bringing awareness to any operational or vehicle limitations.
T-Harness
compatible THGMN4 or THGMN5
Keys
required for
programming
1Keys required
for operation 0
Important! The following settings must be made for the 2016 - 2019 Chevrolet Malibu Hybrid (Smart Key). The Remote Starters
tachometer setting set Engine Checking Mode to OFF and Cranking Time (in seconds) to 4.0 seconds or similar.
Important! Wait 10 seconds after remote start shutdown before remote starting the vehicle again.
The optional Plug & Play THGMN4 or THGMN5 T-Harnesses are sold separately.
Important! All T-Harness wires NOT listed in the diagram are NOT required for the installation. Loose wires such as Siren Output and
Hood Input may need to be pulled from the tapped section of the T-Harness. Refer to the “Wiring diagram with T-Harness” for more
information on connections and installation instructions.
The OBDII Diagnostic Connector features will remain the same even when the T-Harness is installed.
Key2GO is mandatory to control the immobilizer override in this firmware.
Unless specified otherwise, all connectors are displayed from the wire side, with the exception of the OBDII diagnostic connector.
It is important to check that the fuses are positioned correctly in the module. Proper fuse positioning is displayed on each wiring diagram.
Refer to the "Vehicle connections" following the installation diagram.
General notes: This section highlights important information for this specific firmware.
[1] The installation of an aftermarket hood pin is ONLY required on vehicles that are NOT equipped with a factory hood pin or if NOT
supported in data.
[2] The siren is ONLY required when enabling the security features during module flashing.
[3] The clutch is ONLY required for manual transmission vehicles.
[4] For Security-only installations, refer to the "Locating components in the vehicle" section for optional starter disable connection.

6933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Refer to "Pre-installation and application warnings" for important information, such as the description of each special note referenced in the diagram ( ).
Wiring diagram with T-Harness (THGMN5)
8-pin White Connector
12-pin Black Connector
BCM
(blue conn. under
driver-side dash
or in center console
passenger side)
BCM
(white conn. under
driver-side dash
or in center console
passenger side)
(MUX) Clutch: Pin B
ABC
Clutch Switch
(black 3-pin
connector)
Clutch Input: Lt. Green/Red
(MUX) Clutch Output: Lt. Green
180 Ohms Resistor
12-pin Black Connector
Siren
Hood Pin (-) Hood Input: Gray
(+) Siren Output: Brown/Red
(-) Ground When Armed (GWA) Output: Blue/White
Refer to the
Optional starter disable
connection section for relay
and connection details.
22-pin White Connector
12-pin Black Connector
BCM
(green conn.
under driver-side
dash or in center
console passenger side)
GM10
GM9
CONNECT the white 8-pin
connector labeled GM9 to
the non-labeled 8-pin
connector.
NOT USED
Lock/Unlock
CUT
NOT USED
THGMN5
(Optional T-Harness)
Security Only
Mandatory Connections
Remote Start Only
Legend:
Remote Start + Security
22 812
4 2442
Slide to open
A module can also be used for
this installation.
IMPORTANT:
Position the
fuses correctly!
MAIN (5A) (+)
(-) RLY3 PK LIGHT (15A) (+)
(-) ACC & START (30A) (+)
(-) FLEX RLY (20A) (+)
IGN (20A) (+)
MAIN (5A) (+)
(-) RLY3/PK LIGHT(15A) (+)
5
5
30
20
20

7933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Refer to "Pre-installation and application warnings" for important information, such as the description of each special note referenced in the diagram ( ).
Wiring diagram with T-Harness (THGMN4)
8-pin White Connector
12-pin Black Connector
BCM
(blue conn. under
driver-side dash
or in center console
passenger side)
BCM
(green conn.
under driver-side
dash or in center
console passenger side)
BCM
(white conn. under
driver-side dash
or in center console
passenger side)
(MUX) Clutch: Pin B
ABC
Clutch Switch
(black 3-pin
connector)
Clutch Input: Lt. Green/Red
(MUX) Clutch Output: Lt. Green
180 Ohms Resistor
12-pin Black Connector
Siren
Hood Pin (-) Hood Input: Gray
(+) Siren Output: Brown/Red
(-) Ground When Armed (GWA) Output: Blue/White
Refer to the
Optional starter disable
connection section for relay
and connection details.
22-pin White Connector
12-pin Black Connector
THGMN4
(Optional T-Harness)
Security Only
Mandatory Connections
Remote Start Only
Legend:
Remote Start + Security
22 812
4 2442
Slide to open
A module can also be used for
this installation.
IMPORTANT:
Position the
fuses correctly!
MAIN (5A) (+)
(-) RLY3 PK LIGHT (15A) (+)
(-) ACC & START (30A) (+)
(-) FLEX RLY (20A) (+)
IGN (20A) (+)
MAIN (5A) (+)
(-) RLY3/PK LIGHT(15A) (+)
5
5
30
20
20

8933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Refer to "Pre-installation and application warnings" for important information, such as the description of each special note referenced in the diagram ( ).
Wiring diagram
Siren
Hood Pin
(-) Hood Input: Gray: 21
(+) Siren Output: Brown/Red: 11
1
89
10 11
17
23
15
21
16
22
23 4
22
21 23 24 25 26
15 17 18 19 20
8 10 11 13 1412
765
4321
242322
17
7
431
65 8
9 10 11 12 13 14 15
16 18 19 20 21
25 26 27
2
(-) Parking Lights: Gray or
Green/Gray, pin 22
HS CAN High: Blue, pin 25
HS CAN Low: White, pin 24
Immo. Data:
Green/Violet,
pin 2
9
16
12 131 4
18
24
1920
25
5 6 7
Immo. Data Interrupt (vehicle side): Blue/White: 1
Immo. Data Interrupt (conn. side): Blue: 3
(-) Ground: Black: 10
HS CAN Low: Tan: 1
(-) Parking Light Output: Lt. Green/Black: 1
HS CAN High: Tan/Black: 2
Immo.Data (conn.side): Yellow/Black: 8
(MUX) Brake Activation Output: Violet/Brown: 6
SW CAN: Lt.Green: 5
(+) 12V Input: Red: 6 & 12
CUT
(+)12V:
Red/Gray or
Red/Violet, pin 4
BCM
(blue conn.
under driver-side dash
or behind glovebox)
BCM
(green conn.
under driver-side
dash or behind glovebox)
BCM
(white conn.
under driver-side dash
or behind glovebox)
(MUX) Clutch: Pin B
ABC
Clutch Switch
(black 3-pin
connector)
Clutch Input: Lt. Green/Red: 7
(MUX) Clutch Output: Lt. Green: 8
180 Ohms Resistor
(-) Ground When Armed (GWA) Output: Blue/White: 2
Refer to the
Optional starter disable
connection section for relay
and connection details.
(MUX) Brake:
White/Green
or Blue/Yellow,
pin 7
Single Wire
CAN: Green, pin 23
1 2 3
4 5 6 7 8 9
10 11 12 1314 1516
17 18 19 2 0 21
22 24 25 2623
BCM
(gray conn.
under driver-side dash
or behind glovebox)
Security Only
Mandatory Connections
Remote Start Only
Legend:
Remote Start + Security
22 812
4 2442
Slide to open
A module can also be used for
this installation.
IMPORTANT:
Position the
fuses correctly!
MAIN (5A) (+)
(-) RLY3 PK LIGHT (15A) (+)
(-) ACC & START (30A) (+)
(-) FLEX RLY (20A) (+)
IGN (20A) (+)
MAIN (5A) (+)
(-) RLY3/PK LIGHT(15A) (+)
5
5
30
20
20

9933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Locating components in the vehicle
(-) Ground When Armed (GWA) Output: Blue/White: 2
86 85
30
87a
87
Optional starter disable connection
Cut
Starter (conn. side)
Starter (veh. side)
(+) Ignition
Refer to the
Vehicle connections
section for wire and
connector details.
22 812
4 2442
1A diode [1N4002+]
Security Only
Mandatory Connections
Remote Start Only
Legend:
Remote Start + Security
When using an external relay, use a 1N4002 diode or larger.
Important: When flashing your module for Security Only, the Ground When Armed (GWA)
function is pre-configured. When flashing your module for Remote Start & Security, you must
manually assign the designated output to Anti Grind (AG) Starter Kill.
(Applicable to CORE 194+.)

10 933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Keyport location
Vehicle Keyport location Reference
Buick Enclave (Smart Key) 2018 - 2021 Remove the cupholder from the center console storage area. Place transmitter in
the pocket with the buttons facing up. B
Buick Encore (Smart Key) 2017 - 2022 Place transmitter in the cupholder with the buttons facing up. D
Buick Encore GX (Smart Key) 2020 - 2022 Place the RKE transmitter in the storage bin with the buttons facing up. F
Buick Envision (Smart Key) 2016 - 2020 Place transmitter in the cupholder with the buttons facing up. D
Buick LaCrosse (Smart Key) 2014 - 2019 Place the transmitter in the transmitter pocket inside the armrest storage area. A
Buick LaCrosse (Smart Key) 2010 - 2013 Remove the cupholder from the center console storage area. Place transmitter in
the pocket with the buttons facing up. B
Buick Regal (Smart Key) 2011 - 2017 Remove the cupholder liner from the center console cupholder. Place transmitter in
the pocket with the buttons facing up. B
Buick Regal Sportback (Smart Key) 2018 - 2020 Place the RKE transmitter in the storage bin with the buttons facing up. F
Buick Regal Tour X (Smart Key) 2018 - 2020 Place the RKE transmitter in the storage bin with the buttons facing up. F
Buick Verano (Smart Key) 2012 - 2017 Remove the cupholder liner from the center console cupholder. Place transmitter in
the pocket with the buttons facing up. D
Cadillac ATS (Smart Key) 2013 - 2018 Open the center console storage area and the storage tray. Place the transmitter
in the transmitter pocket. A
Cadillac ATS-V (Smart Key) 2016 - 2018 Open the center console storage area and the storage tray. Place the transmitter
in the transmitter pocket. A
Cadillac CTS Sedan (Smart Key) 2014 - 2017 Open the center console storage area and remove the rubber mat. Place the
transmitter in the transmitter pocket. A
Cadillac CTS-V (Smart Key) 2016 - 2017 Open the center console storage area and remove the rubber mat. Place the
transmitter in the transmitter pocket. A
Cadillac Escalade (Smart Key) 2015 - 2020 Open the center console storage area and the storage tray. Place the transmitter
in the transmitter pocket. A
Cadillac SRX (Smart Key) 2010 - 2017 Open the center console storage area and the storage tray. Place the transmitter
in the transmitter pocket. A
Cadillac XT4 (Smart Key) 2019 - 2021 Open the center console and place the transmitter in the transmitter pocket. A or B
Cadillac XT5 (Smart Key) 2017 - 2021 Open the center console storage area and the storage tray. Place the transmitter
in the transmitter pocket. A
Cadillac XT6 (Smart Key) 2020 Open the center console and place the transmitter in the transmitter pocket. A or B
Cadillac XTS (Smart Key) 2013 - 2018 Open the center console storage area and the storage tray. Place the transmitter
in the transmitter pocket. A
Chevrolet Blazer (Smart Key) 2019 - 2022 Place the transmitter in the front cupholder. D
Chevrolet Camaro (Smart Key) 2016 - 2019 Place transmitter in the pocket with the buttons facing up. C
Chevrolet Cruze (Smart Key) 2012 - 2016
Remove the plastic trim piece from the small storage area next to the accessory
power outlet toward the front of the console. Push the button on the transmitter to
extend the blade, insert the key blade into the transmitter slot.
E
Chevrolet Corvette (Smart Key) 2019 - 2020 Place the transmitter in the steering column transmitter pocket with the buttons
facing up and the bottom of the transmitter facing the passenger side. G
Chevrolet Cruze (Smart Key) 2017 - 2018 Place transmitter in the cupholder with the buttons facing up. D
Chevrolet Equinox (Smart Key) 2018 - 2021 Place the transmitter in the front cupholder. D
Chevrolet Impala (Smart Key) 2014 - 2019 Open the center console and place the transmitter in the transmitter pocket. A or B
Chevrolet Malibu (Smart Key) 2013 - 2021 Open the center console and place the transmitter in the transmitter pocket. A or B
Chevrolet Malibu Hybrid (Smart
Key)
2016 - 2019 Open the center console and place the transmitter in the transmitter pocket. A or B
Chevrolet Silverado 1500 (Smart
Key) 2019 - 2022
With bucket seats - Open the center console and place the transmitter in the
transmitter pocket with the buttons facing the front of the vehicle. D
Without bucket seats - Place transmitter in the transmitter pocket between the
cupholders. B
Chevrolet Silverado 2500/3500
(Smart Key) 2020 - 2022
With bucket seats - Open the center console and place the transmitter in the
transmitter pocket. D
Without bucket seats - Place transmitter in the transmitter pocket between the
cupholders. B
Chevrolet Spark (Smart Key) 2016 - 2022 Open the center console and place the transmitter in the transmitter pocket. B

11 933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Vehicle Keyport location Reference
Chevrolet Suburban (Smart Key) 2015 - 2020 Open the center console and place the transmitter in the transmitter pocket. A
Chevrolet Tahoe (Smart Key) 2015 - 2020 Open the center console and place the transmitter in the transmitter pocket. A
Chevrolet Trailblazer (Smart Key) 2021-2022 Open the center console and place the transmitter in the transmitter pocket. B
Chevrolet Traverse (Smart Key) 2018 - 2021 Open the center console and place the transmitter in the transmitter pocket. B
Chevrolet Trax (Smart Key) 2017 - 2021 Place the transmitter in the front cupholder of the center console storage area. F
GMC Acadia (Smart Key) 2017 - 2021 Open the center console and place the transmitter in the transmitter pocket. B
GMC Sierra 1500 (Smart Key) 2019 - 2022
With bucket seats - Open the center console and place the transmitter in the
transmitter pocket with the buttons facing the front of the vehicle. D
Without bucket seats - Place transmitter in the transmitter pocket between the
cupholders. B
GMC Sierra 2500/3500 (Smart
Key) 2020 -2022
With bucket seats - Open the center console and place the transmitter in the
transmitter pocket. D
Without bucket seats - Place transmitter in the transmitter pocket between the
cupholders. B
GMC Terrain (Smart Key) 2018 - 2021 Place the transmitter in the front cupholder. D
GMC Yukon (Smart Key) 2015 - 2020 Open the center console and place the transmitter in the transmitter pocket. A
Center Console
Cupholder
Front
B
C
D
E
G
F
A

12 933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Vehicle connections
The connection information listed below is specific to the 2015 Cadillac CTS Sedan (Smart Key). Refer to “Pre-installation and application warnings” for a list of important
notes.
Data harness, 8-pin white connector (H1)
Module Connects To
Conn./Pin Color Description Wire Location (+/-) Wire Color Connection
H1/1 Tan (Data) HS CAN Low BCM under driver dash, white 26 pin plug, pin 24 Data White Mandatory
H1/2 Tan/Black (Data) HS CAN High BCM under driver dash, white 26 pin plug, pin 25 Data Blue Mandatory
H1/3 Orange/Brown No Connection No Connection
H1/4 Orange/Green No Connection No Connection
H1/5 Lt. Green (Data) Single Wire CAN BCM under driver dash, gray 26 pin plug, pin 23 Data Green Mandatory
H1/6 Violet/Brown (MUX) Brake Activation Output BCM under driver dash, blue 27 pin plug, pin 7 MUX Blue/Yellow Remote Start
Only
H1/7 Orange/Black No Connection No Connection
H1/8 Yellow/Black (Data) Immo. Data (conn. side) BCM under driver dash, green 25 pin plug, pin 2 Data Green/Violet Remote Start
Only
Analog input/output harness, 22-pin white connector (H2)
Module Connects To
Conn./Pin Color Description Wire Location (+/-) Wire Color Connection
H2/1 Lt. Green/Black (-) Parking Light Output BCM under driver dash, white 26 pin plug, pin 22 - Gray or Green/Gray Mandatory
H2/2 Blue/White (-) Ground When Armed (GWA) Output [4] Starter:
Not Applicable
Ignition:
BCM under driver dash, green 25 pin plug, pin 6
Must use a relay.
When using an external relay, use a 1N4002 diode or larger.
+ Violet/Black Security Only
H2/3 Dk. Green/Black (-) Lock Output No Connection
H2/4 Red/White (-) Trunk Release Output No Connection
H2/5 Brown/Black (-) Horn Output No Connection
H2/6 Brown/White (-) AUX 1 Output No Connection
H2/7 White (+) AUX 1 Output No Connection
H2/8 Violet/Black (+) AUX 1 Output No Connection
H2/9 Dk. Blue/Black (-) Unlock Output No Connection
H2/10 Lt. Blue/Black (-) Factory Alarm Disarrn Output No Connection
H2/11 Brown/Red (+) Siren Output [2] Security Only
H2/12 Pink (+) Ignition Sense Input No Connection
H2/13 Violet (+) Door Input No Connection
H2/14 Brown (+) Brake Input No Connection
H2/15 White/Blue (-) Activation Input No Connection
H2/16 Red/Blue No Connection No Connection
H2/17 Black/White (-) E-Brake Input No Connection

13 933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Module Connects To
Conn./Pin Color Description Wire Location (+/-) Wire Color Connection
H2/18 Orange/Black (+) Instant Alarm Input No Connection
H2/19 Blue (-) Trunk Input No Connection
H2/20 Green (-) Door Input No Connection
H2/21 Gray (-) Hood Switch Input [1]
H2/22 Violet/White (AC) Tach Input No Connection
Main harness, 12-pin black connector (H3)
Module Connects To
Conn./Pin Color Description Wire Location (+/-) Wire Color Connection
H3/1 Blue/White Relay N.C. - Immo. Data Interrupt (vehicle side) BCM under driver dash, green 25 pin plug, pin 2 Data Green/Violet Remote Start
Only
H3/2 Blue/Red Relay N.O. - No Connection No Connection
H3/3 Blue Relay COM - Immo. Data Interrupt (conn. side) BCM under driver dash, green 25 pin plug, pin 2 Data Green/Violet Remote Start
Only
H3/4 White/Brown Relay N.C. - No Connection No Connection
H3/5 White Relay COM - No Connection No Connection
H3/6 Red (+) 12 Volt Input BCM under driver dash, blue 27 pin plug, pin 4 + Red/Gray (30A) Mandatory
H3/7 Lt. Green/Red Relay N.O. - (-) Ground [3] Must use a 180 ohm resistor. (chassis ground) Remote Start
Only
H3/8 Lt. Green Relay COM - (MUX) Clutch Activation Output [3] Not Applicable Remote Start
Only
H3/9 Lt. Green/White Relay N.C. - No Connection No Connection
H3/10 Black (-) Ground (chassis ground) Mandatory
H3/11 White Relay COM - No Connection No Connection
H3/12 Red (+) 12 Volt Input BCM under driver dash, blue 27 pin plug, pin 4 + Red/Gray (30A) Mandatory
Relay harness, 10-pin white connector (H4)
Module Connects To
Conn./Pin Color Description Wire Location (+/-) Wire Color Connection
H4/1 N/A No Connection No Connection
H4/2 Red/Black (+) 12 Volt Input No Connection
H4/3 Pink/Black Flex Relay (pin 87a) No Connection
H4/4 Pink/White (+) Flex Relay Output No Connection
H4/5 Red (+) 12 Volt Input No Connection
H4/6 Green Starter Disable (conn. side) No Connection
H4/7 Violet (+) Starter Output (vehicle side) No Connection
H4/8 Orange (+) Accessory Output No Connection
H4/9 Red/White (+) 12 Volt Input No Connection
H4/10 Pink (+) Ignition Input/Output No Connection

14 933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
RF Port harness, 2-pin white connector (H5)
Module
Conn./Pin Color Description
H5/1 N/A RF Loop
H5/2 N/A RF Loop
D2D harness, 4-pin white (1) and black (2) connectors (H6)
Module
Conn./Pin Color Description
H6/1 Blue (Data) TX
H6/2 Black (-) Ground
H6/3 Green (Data) RX
H6/4 Red (+) 12 Volt
Temperature sensor harness, 2-pin black connector (H7)
Module Connects To
Conn./Pin Color Description Wire Location (+/-) Wire Color Connection
H7/1 Black Temperature Sensor
H7/2 Black Temperature Sensor

15 933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Module programming
Refer to “LED diagnostics and troubleshooting” for more information and for troubleshooting purposes.
(For security-only programming, see next section.)
1Please ensure that the vehicle is in a safe location, and cannot move forward during
programming. For vehicles equipped with a manual transmission, make sure the
gearshift lever is in the neutral position.
2
DS3+: Connect the 12-pin main power harness to the DS3+ module FIRST.
Wait until the LED turns ON solid red before proceeding to the next step.
DS4+: Connect the 12-pin main power harness to the DS4+ module FIRST.
The LED will turn ON solid Blue for 1 second to confirm Bluetooth communication.
Wait until the LED turns ON solid red before proceeding to the next step.
3
Connect the remaining harnesses to the module.
Note: To skip the transponder programming and use convenience features only, press
the programming button 5 times. When the LED turns ON solid orange, proceed to
step 6.
4Remove battery from one key fob, and make sure that the other key fob is located
more than 10 feet away from vehicle.
5Insert the key fob (with battery removed) in the key port.
Note:Refer to the "Keyport location" section.
6
Press and hold the Push-To-Start (PTS) button until the ignition turns ON, then release.
The LED flashes orange then green.
Note: If the LED starts flashing 2x red, press and hold the Push-to-Start (PTS) button with
the brake pedal applied. When the engine begins cranking, let go of the button. The
LED flashes orange then green. Proceed to step 7.
Important: If programming fails, perform a soft reset and restart programming.
Note: If the transponder programming was skipped, the LED turns ON solid orange for
3 seconds then shuts OFF when programming is done.
7
Press the PTS button once to turn the ignition OFF.The LED flashes orange slowly.
Note: If programming the unit using the Directlink app, please follow the instructions
from the app. If you are using a computer to flash the module please continue to step
8.
8Remove the module from the vehicle, and reconnect it to your computer. The web site
will automatically recognize that you are moving onto the second phase of the
programming sequence.
9Click on Submit Key2GO Request.
10 Once the configuration is completed, reconnect the module. The LED turns ON solid
green for 3 seconds, then turns OFF.

16 933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
11 Pair remotes (if applicable). For information on how to pair a specific remote, please
refer to its corresponding owner documentation, which can be found inside the product
packaging of the complete system or on www.directechs.com.*
12
DATA Tach: Firmware using DATA Tach, the tachometer is preprogrammed for the
vehicle and no further action is required. For instructions on how to adjust tach or use
Virtual tach, refer to "Initialize Virtual Tach" (not needed with hardwired or data tach
applications).
Hardwire Tach: Firmware using the Violet/White Hardwire Tach input will require
programming. For instructions on how to program or adjust tach or use Virtual tach,
refer to "Initialize Virtual Tach" (not needed with hardwired or data tach applications).
* Your aftermarket remote may differ from the model shown in the illustrations.
You have successfully completed the module programming sequence.

17 933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Module programming for security-only installations
Refer to "LED diagnostics and troubleshooting" for more information and for troubleshooting purposes.
To connect the module:
1
Please ensure that the vehicle is in a safe location and cannot move forward during
programming. For vehicles equipped with a manual transmission, make sure the gearshift
lever is in the neutral position.
2
DS3+: Connect the 12-pin main power harness to the DS3+ module FIRST.
Wait until the LED turns ON solid orange before proceeding to the next step.
Solid
Must connect
12-pin FIRST
4 2442
22 810 12
DS3/DS3+
DS4+: Connect the 12-pin main power harness to the DS4+ module FIRST.
The LED will turn ON solid blue for 1 second to confirm Bluetooth communication.
Wait until the LED turns ON solid orange before proceeding to the next step.
SolidSolid
x1 Sec
Must connect
12-pin FIRST
4 2442
22 810 12
DS4/DS4+
3Connect the remaining harnesses to the module. Connect
remaining
harnesses
4Press once on the Push-to-Start (PTS) button to turn the ignition ON, and wait until the LED
turns OFF. &Off
5Press once more on the PTS button to turn the ignition OFF.
6
Pair remotes (if applicable). For information on how to pair a specific remote, please
refer to its corresponding owner documentation, which can be found inside the product
packaging of the complete system or on www.directechs.com.* Pair
remotes*
* Your aftermarket remote may differ from the model shown in the illustrations.
You have successfully completed the module programming sequence.

18 933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Pairing Remotes
To enter pairing:
1Open the driver side door.
2
Turn the vehicle ignition to the ON position.
OR
Press the PTS button to turn the ignition ON.
* The number of times the PTS button is pressed depends on the vehicle.
START
Key OUT
ON
OFF
START
Key IN
ON
OFF
START
Key IN
ON
OFF
START
Key IN
ON
OFF
OR
3
Within 10 seconds, press and release once, and then press and hold
the programming button on the Control Center (antenna) or the LED/Valet Pod
(standalone switch) until the LED starts flashing then release the button.
* Your antenna may differ from the model shown in the illustration.
Press &
Release
& && OR
*
*
Note: Connected devices become registered within 4 to 6 seconds.
8556T Temperature Sensor
The 8556T Temperature Sensor is optional, but included with your DS3+/DS4+ module.
When used, the Temperature Sensor must be plugged into the 2-pin black connector of your module.
Note: When the system is configured as a remote starter, the temperature is reported by the 8556T Temperature
Sensor. When security features are enabled, it is reported by the 8504D Combo Sensor.
8504D Combo Sensor
The 8504D Combo Sensor is optional, but included with the purchase of a DS4SU security package.
The Combo Sensor is preset for the majority of applications; however, it can be adjusted using the DirectLink
application, as well as a compatible LED or LCD remote. Please refer to the instructions included with the DS4SU for
more information on how to make adjustments.
Note: When the system is configured as a remote starter, the temperature is reported by the 8556T Temperature Sensor.
When security features are enabled, it is reported by the 8504D Combo Sensor.
IMPORTANT: The Combo Sensor must be paired to the device before it can be used.
RF Systems
An RF System consists of one or multiple remotes, a Control Center (antenna), and an antenna cable – various combinations exist. An RF
System allows the vehicle owner to control the system with enhanced range. Two-way models are available. Please follow the instructions
included with the kit for appropriate installation and programming information.
..
When used in conjunction with Directed SmartStart®
To enable D2D communication between the DS3+/DS4+ and the Directed SmartStart®one of the following actions must be performed
before providing power to the Directed SmartStart®unit:
SmartStart with Loops – The brown loop must be cut.
SmartStart with Pigtails – The gray wire must be connected to a ground source.
Loops Pigtails
DO NOT connect the Directed SmartStart®2-pin power harness when using the DS3+/DS4+. Power and ground will be provided by the
D2D connector on the module. Refer to the Directed SmartStart®documentation for further details.

19 933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
When used in conjunction with Directed SmartStart®
To enable D2D communication between the DS3+/DS4+ and the Directed SmartStart®one of the following actions must be performed
before providing power to the Directed SmartStart®unit:
SmartStart with Loops – The brown loop must be cut.
SmartStart with Pigtails – The gray wire must be connected to a ground source.
Loops Pigtails
DO NOT connect the Directed SmartStart®2-pin power harness when using the DS3+/DS4+. Power and ground will be provided by the
D2D connector on the module. Refer to the Directed SmartStart®documentation for further details.
D2D port configuration
Caution! Do not connect the Control Center (antenna) or any digital sensors (8504D) to the white D2D1 port.
The white D2D1 port is reserved ONLY for SmartStart, Module flashing or 3rd Party bypass. The two black D2D2 ports are reserved for the
Control Center (antenna) and digital sensors (8504D).

20 933.GM9 2.42.195.3 2015 Cadillac CTS Sedan (Smart Key)
©2021 VOXX•DEI LLC. All rights reserved.
Manual Transmission
IMPORTANT! Directed does not approve nor support installations of manual transmission and remote starts on any electronic vehicles (EV),
OEM Remote Start Activation firmware, vehicles with convertibles and/or removable tops, including but not limited to Jeep Wrangler, Honda
S2000, Mazda Miata, and other such vehicles.
This system supports manual transmission installations.
Refer to “Directwire” section at www.directechs.com for further information on vehicle-specific wiring connections.
When flashing the module for Manual Transmission on the Directechs website:
1. In the Remote Start Features section, select the desired configurations for Manual Transmission Initialization & Manual Transmission
Completion.
Manual Transmission Initialization
Sets how the manual transmission sequence is initialized
Remote (Default)
2x Parking Brake
1x Parking Brake
With foot on brake, set e-brake, remove foot brake, press ANY button on Directed
remote. Ready mode is activated. Parking lights will flash 5 times confirming.
With foot on brake, setting the parking brake ON, OFF, ON within 10 seconds
then removing foot brake will initialize the manual transmission ready mode.
Parking lights will flash 5 times confirming.
Feature visible to Installer
With foot on brake, setting the parking brake ON then removing foot brake will
initialize the manual transmission ready mode. Parking lights will flash 5 times
confirming.
Manual Transmission Completion
Sets how the manual transmission sequence is ended.
Note 1: For PTS vehicle specific instructions, please see the bottom of the “Vehicle Specific Install
Guide” for manual transmission sequence procedures.
Note 2: The trunk input trigger is considered a “door” for manual ready mode. If trunk or any other
door is opened, manual transmission ready mode will be canceled.
Door closed &
Remote (Default)
Door closed with
passive locking
Door closed
To complete the manual ready mode sequence and shut down the remote start,
turn off the ignition (engine stays running), exit the vehicle with your keys, shut all
doors and press lock on the Directed remote.
To complete the manual ready mode sequence and shut down the remote start,
turn off the ignition (engine stays running), exit the vehicle with your keys, 8
seconds after the last door is closed, the remote starter will shut down, the door
will automatically lock and the system will arm at the same time.
To complete the manual ready mode sequence and shut down the remote start,
turn off the ignition (engine stays running), exit the vehicle with your keys, 8
seconds after the last door is closed, the remote starter will shut down. Doors will
stay unlocked.
Feature visible to Installer
2. In addition, if no Clutch Output is pre-configured in the firmware, an output can be configured when flashing the module under the
Programmable Input/Output section. Use any available positive (+) or negative (-) outputs depending on the polarity of the clutch switch
listed on Directwire, set it to Starter.
3. Note: A Relay may be required depending on your vehicle.
See Tech Tips 10000 - Clutch Bypass for Remote Start - https://directechs.blob.core.windows.net/techtips/10000.pdf
4. Additional connections may be required if these functions are not supported by the firmware.
Connection Description
(-) E-Brake Status Input
(Black/White, pin 17)
Must be connected to a working emergency brake in the vehicle. Although most vehicles have simple (-) trigger
emergency brake circuits note some vehicles do not and may require unique integration methodologies.
(-) Door Trigger Input (Green,
pin 20) OR (+)Door Input
(Violet, pin 13)
Must be connected to a working door trigger in the vehicle, which monitors all doors. The unit must monitor the door pins
to allow the Ready Mode process to be enabled.
Note: Some vehicles may require unique integration methodologies for this circuit. For more information, refer to www.
directechs.com.
(AC) Tachometer Input
(Violet/White, pin 22)
Must be connected to a working tachometer signal in the vehicle (fuel injector, ignition coil, true tach, etc.) and learned
successfully to the DS4+.
See Tech Tips 10001 - https://directechs.blob.core.windows.net/techtips/10001.pdf