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Ford heat pads (elements) for Driver & Passenger front seats. (Fairwayford.net)
Seat Cushion Heater - Ford (NZ6Z-14D696-A)
Seat Back Heater - Ford (NZ6Z-14D696-B)
HVAC Module from a Maverick XLT with Lux Package
Seat heating pads harness with Yazaki male connectors, 4-Pin, 2-Pin
HVAC module to Seat harness with 16 Awg GXL and 22 Awg TXL wire
Splice, 22 Awg onto HVAC Signal Return for heat pad temperature sensors
12V from BCM Fuse 7 (20Amp) on C2280C pin 1 to HVAC C228B Pins 1,2 for Seat Heat Feed.
Redneck Garage leather seat video to help remove/install seat covers for heat pads install.
DTF Garage video @6:08 for HVAC Module removal.
My 23 XLT seat body harness have the wiring on the connector (C305 Driver, C331 Passenger) for heated seats.
But the other end of harness C201 under dead pedal and C207 above RH kick panel had no wires on connector side going to HVAC module.
C200 under dead pedal did have +12V (F38 30A, F39 20A) for heated seats from BJB, but no wires out for the seats.
Used existing Ground on each seat body harness connector for the heat pads.
Removed each seat cover, installed Ford heat pads that have covered adhesive.
Made seat heat harness for each seat that connects to heat pad Yazaki connectors and the seat Molex MX150 connector.
Made harness with (1) 16 Awg seat heat feed , (2) 22 Awg for seat cushion temperature sense for HVAC C228B to Front Seats.
(1) 22 Awg that is spliced onto Sig Rtn near C228A.
Two Sig Rtn wires are needed, one for each seat. I just wanted to reduce my 1st splice thickness near the HVAC C228A connector.
I added another 22 Awg onto that wire under the floor console so have a Sig Rtn wire going to each seat.
Run my tesa taped harness along existing harness that goes up above and then down toward RH side of floor console.
Then ran harness in the floor console. Y off to each seat just behind front mount bolts, under carpet & up from carpet where existing body harness is for each seat.
Removed (depinned) existing body harness connector heated wires and installed my wires from the HVAC module in their place on each seat body harness connector.
Seat Heat Pads:
Driver Seat Cushion
Driver Seat Back
Seat Heat Harness for Seat Cushion & Seat Back:
Passenger Seat with Cushion & Back heating harness:
Driver Seat C305 Molex Connector with heat harness wires:
Passenger Seat Body Harness Molex connector with 3 added HVAC wires on left, 3 replaced wires on right that ran to only one side of C207 at right side above kick panel.
SEAT Connectors:
Front Seats Molex MX150 Connectors: Driver C305, Passenger C331
MX150 Small MALE terminals:
Molex PN 33000-0003, Male, Mat Seal, 22 Awg
Molex PN 33000-0002, Male, Mat Seal, 18 - 20 Awg
MX150 Large MALE 2.8mm terminals:
TE Connectivity PN 1326031-3, Male Terminal 2.8mm, 16 - 18 Awg
MX150 Small FEMALE terminals:
Molex PN 33012-2003, Female, Mat Seal, 22 Awg
Molex PN 33012-2002, Female, Mat Seal, 18 - 20 Awg
MX150 Large FEMALE 2.8mm terminals:
TE Connectivity PN 1326030-2, Female Terminal 2.8mm, 18 - 20 Awg
TE Connectivity PN 1-1326032-1, Female Terminal 2.8mm, 14 Awg
Front Seat Heat Elements = Yazaki Connectors:
4-Pin PN 7282644940 for Driver C364, Passenger C334, CONN 4P YESC KAIZEN LT GRY = MALE
2-Pin PN 7282644340 for Driver C365, Passenger C335, CONN 2P YESC KAIZEN LT GRY = MALE
Yazaki MALE Terminals:
PN 7114410002, Desc.: Automotive Connectors TERM YESC M 1.5MM UNSLD .6mm2 to 1.25mm2, 18 - 20 Awg
PN 7114410102, Desc.: Automotive Connectors TERM YESC M 1.5MM UNSLD .3mm2 to .5mm2 (16 Awg to 20 Awg)
HVAC Module Connectors:
C228B - HEATING, VENTILATION AND AIR CONDITIONING (HVAC) CONTROL MODULE
C228B Terminals
Pins 1,2,16,17 Female Terminals: DU2Z-14474-DA, or Molex PN 34083-2002 MX150 Cable Seal Female Terminal, 18 - 20 AWG.
Pins 15, 30 Female Terminals: TE Connectivity PN 1924955-3 Desc.: Gen Y 0.64 Female Terminal 20-22 AWG unsealed
C228B wo heated seat wires
C228B with heated seats wires added:
C228A - HVAC Module Connector pin 2 GY-BU Signal Return is for all the HVAC module's sensors.
22 Awg splice for Driver, Passenger NTC temperature sense signal return from the seats.
Added my splice to Ford's existing splices on Signal Return.
Signal Return wire removed from C228A pin 2 with added splice for seat NTC sensors.
BCM Fuse 7 C2280C pin 1 to splice for (2) 16 Awg Red to HVAC C228B pin 1, pin 2
Used a pigtail with female terminal from WPT-1778 (BLACK) as it cost less than WPT-1777 (GRAY).
The female terminals in both pigtail kits are the same.
The Black, Gray connectors are keyed different.
BCM Fuses F7 30Amp on C2280C pin 1 and F14 30Amp on C2280C pin 2 are hot all time.
On a Lariat these Fuses would be for DDM/PDM that my XLT doesn't have.
I replaced the F7 30A fuse with a 20A Micro2 fuse since heat pads amp draw max is just over 13 Amps with both Drive & Passenger set to High at the same time.
Forscan HVAC Module settings for Heat Seats
Saved original my XLT HVAC As Built. Removed the XLT HVAC module.
Installed the HVAC w Lux module. Saved the HVAC w Lux Package As Built.
Used the "As Built Compare utility" to compare HVAC As Built without Heated Seats to HVAC with Heated Seats As Built.
Used Livinitup 2023 Maverick Forscan sheet for HVAC config settings info.
Wrote my original HVAC's As Built into the HVAC with Lux module, then did the As Built edits needed to enable Heated Front Seats.
Forscan Changed 723-01-01 thru 723-01-07 for Heated Front Seats
* Temperature Sensor near rearview mirror sets to 50°F after config change(s) written by forscan for a few start/stop cycles till it recalibrates and shows current temperature.
* Wasn't able to make this work in Forscan EZ Mode, so had to do edits in Forscan As Built.
HVAC Module with Heated Seats.
HVAC Module connectors: C228B and C228A
Heated Seats Amps measured with a clamp meter on F7 20A Fuse to HVAC C228B pins 1, 2 :
Driver seat on High, then switched to Medium, then to Low, and then both seats On.
12V is switched On/Off to the heat elements to maintain temperature set point.
On High the 12V is switch On/Off frequently, then less often on Medium, even less on Low setting.
6 Amp draw from one seat Series connected Seat Cushion pad and the Seat Back pad.
The seat cushion (bottom) pad contains the NTC temperature sensor.
Both Seats set to High at same time can see 13 Amps draw from F7 fuse.
Both Driver C305 & Passenger C331 Molex MX150 Connectors use pins 9, 10, 11 for the heated seats along with existing Ground on the Body Harness side of the connectors on Pin 8.
Driver Seat Heat Wiring:
Heat Elements: 12V from HVAC Module to C305 pin 9 thru both elements to Ground C305 pin 8.
Temperature Sense: HVAC module to C305 pin 11 -> NTC sensor in seat bottom element to C305 pin 10 to HVAC common Signal Return C228A pin 2.
Driver Heater Feed (CHS02, GD382) @ Seat:
C305(F)<<C305(M)p9--RD-->C364(M)p1>>C364(F)p1--RD--Cushion Element--BK--C364(F)p4<<C364(M)p4--BU->C365(M)p1>>C365(F)p1--BK--Back Element--BK--C365(F)p2--BK--C305(M)p8>>C305(F)p8--->G302 Ground
Driver NTC Sense (RHS05, RH111) @ Seat:
C305(F)<<C305(M)p11--VT-->C364(M)p2>>C364(F)p2-GY--NTC--GY--C364(F)p3<<C364(M)p3--OR-->C305(M)p10>>C305(F)p10-->SIG RTN (HVAC) Control Module
Passenger Seat Heat Wiring:
Heat Elements: 12V from HVAC Module to C331 pin 9 thru both elements to Ground C331 pin 8.
Temperature Sense: HVAC module to C331 pin 11 -> NTC sensor in seat bottom element to C331 pin 10 to HVAC common Signal Return C228A pin 2.
Passenger Heater Feed @ Seat:
C331 Pin 9 = C334 Pin 1<-->Front Seat Cushion Heater Mat RH<-->C334 Pin 4<-->C335 Pin1---Front Seat Backrest Heater Mat LH--C335 Pin2<-->C331 Pin 10<-->G304 Ground
Passenger NTC Sense @ Seat:
C331 Pin 11<-->C334 Pin 2<-->NTC<-->C334 Pin 3<-->C331 Pin 10<-->SIG RTN (HVAC) Control Module
My 2023 2.5L Maverick XLT:
Seat Male Connector C305. (2023 2.5L XLT, Manual Seat) As Found.
Pin Circuit Gauge Qualifier Terminal PN
1 * *
2 * *
3 CR201 (GN-BU) 20 Seat Belt Buckle Switch LH --> RCM BCKL SW DRV SNS+
4 VR215 (YE-VT) 20 Seat Track Position Sensor LH --> RCM DRVR SEAT POS SNS+
5 * *
6 * *
7 RR172 (GN-VT) 20 Manual Seat SIG RTN (Buckle Switch, Seat Track Position) <--> RCM (Restraints Control Module)
8 * *
9 * *
10 * *
11 * *
12 CR105 (GN-BU) 20 Side Airbag LH <--> RCM DRVR SIDE AIR FEED
13 RR105 (YE-VT) 20 Side Airbag LH <--> RCM DRVR SIDE AIR RTN
14 * *
15 * *
16 * *
==============
Body Harness to Driver Seat Female C305. Connector (2023 2.5L XLT, Manual Seat)
Pin Circuit Gauge Qualifier Terminal PN
1 SBB30 (BN-RD) 12 97BG-14474-BFA +12V via BJB F30 30A Fuse
2 * * N/A
3 CR201 (GN-BU) 22 BU5T-14474-UA Seat Belt Buckle Switch LH --> RCM = BCKL SW DRV SNS+
4 VR215 (YE-VT) 22 BU5T-14474-UA Seat Track Position Sensor LH --> RCM = DRVR SEAT POS SNS+
5 * * N/A
6 * * N/A
7 RR172 (GN-VT) 18 7C3T-14474-DA SIG RTN (Buckle Switch, Seat Track Position) <-G304-> RCM (Restraints Control Module)
8 GD382 (BK-GY) 12 97BG-14474-BFA Driver Heater Backrest <--> Ground
9 CHS02 (YE-BU) 22 97BG-14474-BDA Driver Heater Mat, Backrest Mat Feed <--> HVAC Control Module
10 RH111 (GY-BU) 22 BU5T-14474-UA Signal Return (NTC)
11 RHS05 (YE-VT) 22 BU5T-14474-UA Driver Seat NTC (Thermistor) Sense <--> HVAC Control Module
12 CR105 (GN-BU) 18 7U5T-14474-TA Side Airbag LH <--> RCM DRVR SIDE AIR FEED
13 RR105 (YE-VT) 18 7U5T-14474-TA Side Airbag LH <--> RCM DRVR SIDE AIR RTN
14 * * N/A
15 * * N/A
16 * * N/A
Crimp Tool: IWIS SN-2459 ratcheting crimper for the smaller terminals. ~$23
Hog Nose Ring Pliers Kit. 1/2" Hog RIngs worked for attaching seat covers.
====================
2024 F150 STX for comparison
DIY MODS: Installing Heated, Power, Leather seats in my 2024 F-150 STX (easy)
2024 F150 STX Heated Power Seat + HVAC Swap PART 2 | FORSCAN Configuration + Wiring
Seat Cushion Heater - Ford (NZ6Z-14D696-A)
Seat Back Heater - Ford (NZ6Z-14D696-B)
HVAC Module from a Maverick XLT with Lux Package
Seat heating pads harness with Yazaki male connectors, 4-Pin, 2-Pin
HVAC module to Seat harness with 16 Awg GXL and 22 Awg TXL wire
Splice, 22 Awg onto HVAC Signal Return for heat pad temperature sensors
12V from BCM Fuse 7 (20Amp) on C2280C pin 1 to HVAC C228B Pins 1,2 for Seat Heat Feed.
Redneck Garage leather seat video to help remove/install seat covers for heat pads install.
DTF Garage video @6:08 for HVAC Module removal.
My 23 XLT seat body harness have the wiring on the connector (C305 Driver, C331 Passenger) for heated seats.
But the other end of harness C201 under dead pedal and C207 above RH kick panel had no wires on connector side going to HVAC module.
C200 under dead pedal did have +12V (F38 30A, F39 20A) for heated seats from BJB, but no wires out for the seats.
Used existing Ground on each seat body harness connector for the heat pads.
Removed each seat cover, installed Ford heat pads that have covered adhesive.
Made seat heat harness for each seat that connects to heat pad Yazaki connectors and the seat Molex MX150 connector.
Made harness with (1) 16 Awg seat heat feed , (2) 22 Awg for seat cushion temperature sense for HVAC C228B to Front Seats.
(1) 22 Awg that is spliced onto Sig Rtn near C228A.
Two Sig Rtn wires are needed, one for each seat. I just wanted to reduce my 1st splice thickness near the HVAC C228A connector.
I added another 22 Awg onto that wire under the floor console so have a Sig Rtn wire going to each seat.
Run my tesa taped harness along existing harness that goes up above and then down toward RH side of floor console.
Then ran harness in the floor console. Y off to each seat just behind front mount bolts, under carpet & up from carpet where existing body harness is for each seat.
Removed (depinned) existing body harness connector heated wires and installed my wires from the HVAC module in their place on each seat body harness connector.
Seat Heat Pads:
Driver Seat Cushion
Driver Seat Back
Seat Heat Harness for Seat Cushion & Seat Back:
Passenger Seat with Cushion & Back heating harness:
Driver Seat C305 Molex Connector with heat harness wires:
Passenger Seat Body Harness Molex connector with 3 added HVAC wires on left, 3 replaced wires on right that ran to only one side of C207 at right side above kick panel.
SEAT Connectors:
Front Seats Molex MX150 Connectors: Driver C305, Passenger C331
MX150 Small MALE terminals:
Molex PN 33000-0003, Male, Mat Seal, 22 Awg
Molex PN 33000-0002, Male, Mat Seal, 18 - 20 Awg
MX150 Large MALE 2.8mm terminals:
TE Connectivity PN 1326031-3, Male Terminal 2.8mm, 16 - 18 Awg
MX150 Small FEMALE terminals:
Molex PN 33012-2003, Female, Mat Seal, 22 Awg
Molex PN 33012-2002, Female, Mat Seal, 18 - 20 Awg
MX150 Large FEMALE 2.8mm terminals:
TE Connectivity PN 1326030-2, Female Terminal 2.8mm, 18 - 20 Awg
TE Connectivity PN 1-1326032-1, Female Terminal 2.8mm, 14 Awg
Front Seat Heat Elements = Yazaki Connectors:
4-Pin PN 7282644940 for Driver C364, Passenger C334, CONN 4P YESC KAIZEN LT GRY = MALE
2-Pin PN 7282644340 for Driver C365, Passenger C335, CONN 2P YESC KAIZEN LT GRY = MALE
Yazaki MALE Terminals:
PN 7114410002, Desc.: Automotive Connectors TERM YESC M 1.5MM UNSLD .6mm2 to 1.25mm2, 18 - 20 Awg
PN 7114410102, Desc.: Automotive Connectors TERM YESC M 1.5MM UNSLD .3mm2 to .5mm2 (16 Awg to 20 Awg)
HVAC Module Connectors:
C228B - HEATING, VENTILATION AND AIR CONDITIONING (HVAC) CONTROL MODULE
C228B Terminals
Pins 1,2,16,17 Female Terminals: DU2Z-14474-DA, or Molex PN 34083-2002 MX150 Cable Seal Female Terminal, 18 - 20 AWG.
Pins 15, 30 Female Terminals: TE Connectivity PN 1924955-3 Desc.: Gen Y 0.64 Female Terminal 20-22 AWG unsealed
C228B wo heated seat wires
C228B with heated seats wires added:
C228A - HVAC Module Connector pin 2 GY-BU Signal Return is for all the HVAC module's sensors.
22 Awg splice for Driver, Passenger NTC temperature sense signal return from the seats.
Added my splice to Ford's existing splices on Signal Return.
Signal Return wire removed from C228A pin 2 with added splice for seat NTC sensors.
BCM Fuse 7 C2280C pin 1 to splice for (2) 16 Awg Red to HVAC C228B pin 1, pin 2
Used a pigtail with female terminal from WPT-1778 (BLACK) as it cost less than WPT-1777 (GRAY).
The female terminals in both pigtail kits are the same.
The Black, Gray connectors are keyed different.
BCM Fuses F7 30Amp on C2280C pin 1 and F14 30Amp on C2280C pin 2 are hot all time.
On a Lariat these Fuses would be for DDM/PDM that my XLT doesn't have.
I replaced the F7 30A fuse with a 20A Micro2 fuse since heat pads amp draw max is just over 13 Amps with both Drive & Passenger set to High at the same time.
Forscan HVAC Module settings for Heat Seats
Saved original my XLT HVAC As Built. Removed the XLT HVAC module.
Installed the HVAC w Lux module. Saved the HVAC w Lux Package As Built.
Used the "As Built Compare utility" to compare HVAC As Built without Heated Seats to HVAC with Heated Seats As Built.
Used Livinitup 2023 Maverick Forscan sheet for HVAC config settings info.
Wrote my original HVAC's As Built into the HVAC with Lux module, then did the As Built edits needed to enable Heated Front Seats.
Forscan Changed 723-01-01 thru 723-01-07 for Heated Front Seats
* Temperature Sensor near rearview mirror sets to 50°F after config change(s) written by forscan for a few start/stop cycles till it recalibrates and shows current temperature.
* Wasn't able to make this work in Forscan EZ Mode, so had to do edits in Forscan As Built.
HVAC Module with Heated Seats.
HVAC Module connectors: C228B and C228A
Heated Seats Amps measured with a clamp meter on F7 20A Fuse to HVAC C228B pins 1, 2 :
Driver seat on High, then switched to Medium, then to Low, and then both seats On.
12V is switched On/Off to the heat elements to maintain temperature set point.
On High the 12V is switch On/Off frequently, then less often on Medium, even less on Low setting.
6 Amp draw from one seat Series connected Seat Cushion pad and the Seat Back pad.
The seat cushion (bottom) pad contains the NTC temperature sensor.
Both Seats set to High at same time can see 13 Amps draw from F7 fuse.
Both Driver C305 & Passenger C331 Molex MX150 Connectors use pins 9, 10, 11 for the heated seats along with existing Ground on the Body Harness side of the connectors on Pin 8.
Driver Seat Heat Wiring:
Heat Elements: 12V from HVAC Module to C305 pin 9 thru both elements to Ground C305 pin 8.
Temperature Sense: HVAC module to C305 pin 11 -> NTC sensor in seat bottom element to C305 pin 10 to HVAC common Signal Return C228A pin 2.
Driver Heater Feed (CHS02, GD382) @ Seat:
C305(F)<<C305(M)p9--RD-->C364(M)p1>>C364(F)p1--RD--Cushion Element--BK--C364(F)p4<<C364(M)p4--BU->C365(M)p1>>C365(F)p1--BK--Back Element--BK--C365(F)p2--BK--C305(M)p8>>C305(F)p8--->G302 Ground
Driver NTC Sense (RHS05, RH111) @ Seat:
C305(F)<<C305(M)p11--VT-->C364(M)p2>>C364(F)p2-GY--NTC--GY--C364(F)p3<<C364(M)p3--OR-->C305(M)p10>>C305(F)p10-->SIG RTN (HVAC) Control Module
Passenger Seat Heat Wiring:
Heat Elements: 12V from HVAC Module to C331 pin 9 thru both elements to Ground C331 pin 8.
Temperature Sense: HVAC module to C331 pin 11 -> NTC sensor in seat bottom element to C331 pin 10 to HVAC common Signal Return C228A pin 2.
Passenger Heater Feed @ Seat:
C331 Pin 9 = C334 Pin 1<-->Front Seat Cushion Heater Mat RH<-->C334 Pin 4<-->C335 Pin1---Front Seat Backrest Heater Mat LH--C335 Pin2<-->C331 Pin 10<-->G304 Ground
Passenger NTC Sense @ Seat:
C331 Pin 11<-->C334 Pin 2<-->NTC<-->C334 Pin 3<-->C331 Pin 10<-->SIG RTN (HVAC) Control Module
My 2023 2.5L Maverick XLT:
Seat Male Connector C305. (2023 2.5L XLT, Manual Seat) As Found.
Pin Circuit Gauge Qualifier Terminal PN
1 * *
2 * *
3 CR201 (GN-BU) 20 Seat Belt Buckle Switch LH --> RCM BCKL SW DRV SNS+
4 VR215 (YE-VT) 20 Seat Track Position Sensor LH --> RCM DRVR SEAT POS SNS+
5 * *
6 * *
7 RR172 (GN-VT) 20 Manual Seat SIG RTN (Buckle Switch, Seat Track Position) <--> RCM (Restraints Control Module)
8 * *
9 * *
10 * *
11 * *
12 CR105 (GN-BU) 20 Side Airbag LH <--> RCM DRVR SIDE AIR FEED
13 RR105 (YE-VT) 20 Side Airbag LH <--> RCM DRVR SIDE AIR RTN
14 * *
15 * *
16 * *
==============
Body Harness to Driver Seat Female C305. Connector (2023 2.5L XLT, Manual Seat)
Pin Circuit Gauge Qualifier Terminal PN
1 SBB30 (BN-RD) 12 97BG-14474-BFA +12V via BJB F30 30A Fuse
2 * * N/A
3 CR201 (GN-BU) 22 BU5T-14474-UA Seat Belt Buckle Switch LH --> RCM = BCKL SW DRV SNS+
4 VR215 (YE-VT) 22 BU5T-14474-UA Seat Track Position Sensor LH --> RCM = DRVR SEAT POS SNS+
5 * * N/A
6 * * N/A
7 RR172 (GN-VT) 18 7C3T-14474-DA SIG RTN (Buckle Switch, Seat Track Position) <-G304-> RCM (Restraints Control Module)
8 GD382 (BK-GY) 12 97BG-14474-BFA Driver Heater Backrest <--> Ground
9 CHS02 (YE-BU) 22 97BG-14474-BDA Driver Heater Mat, Backrest Mat Feed <--> HVAC Control Module
10 RH111 (GY-BU) 22 BU5T-14474-UA Signal Return (NTC)
11 RHS05 (YE-VT) 22 BU5T-14474-UA Driver Seat NTC (Thermistor) Sense <--> HVAC Control Module
12 CR105 (GN-BU) 18 7U5T-14474-TA Side Airbag LH <--> RCM DRVR SIDE AIR FEED
13 RR105 (YE-VT) 18 7U5T-14474-TA Side Airbag LH <--> RCM DRVR SIDE AIR RTN
14 * * N/A
15 * * N/A
16 * * N/A
Crimp Tool: IWIS SN-2459 ratcheting crimper for the smaller terminals. ~$23
Hog Nose Ring Pliers Kit. 1/2" Hog RIngs worked for attaching seat covers.
====================
2024 F150 STX for comparison
DIY MODS: Installing Heated, Power, Leather seats in my 2024 F-150 STX (easy)
2024 F150 STX Heated Power Seat + HVAC Swap PART 2 | FORSCAN Configuration + Wiring
Sponsored
Last edited: