View source for DSM/TCU

==Subpages==
* [[DSM/TCU/TCU Numbers]]
* [[DSM/TCU/JG331A002C]]

==Info==
* https://www.dsmtuners.com/threads/1g-tcu-guide.277172/
* https://www.dsmtuners.com/threads/1g-tcu-awd-or-fwd.161911/#post-1342644
* https://www.dsmtuners.com/threads/1g-tcu-compatibility.379984/
* https://www.dsmtuners.com/threads/90-1g-tcu-wiring-diagram.503723/#post-153590821
* https://www.dsmtalk.com/threads/compatible-tcus.186535/
* http://www.vfaq.com/mods/Trannies.html
* https://w4a33.com/doku.php?id=tcu

==Lists==
* http://www.foreignecurepair.com/laserTCM.htm
* http://www.foreignecurepair.com/mitsubishi.htm

==Codes==
* https://web.archive.org/web/20070104065324/http://www.plymouthlaser.com/tcucodes.htm

==Connectors==

===1991-1992===
{| class="wikitable"
!Name
!Model numbers
!Manufacturer
!URL
|-
!PULSE LOCK CAP ASSY 42P
|
* 172489-1
|AMP (Tyco (TE Connectivity))
|
* https://www.te.com/usa-en/product-172489-1.html
*
|-
!PULSE LOCK PLUG HSG. 10P
|
* 172315-7
|AMP (Tyco (TE Connectivity))
|
* https://www.te.com/usa-en/product-172315-7.html
*
|-
!PULSE LOCK PLUG HSG. 18P
|
* 172316-7
|AMP (Tyco (TE Connectivity))
|
* https://www.te.com/usa-en/product-172316-7.html
*
|-
!PULSE LOCK PLUG HSG. 14P
|
* 172354-7
|AMP (Tyco (TE Connectivity))
|
* https://www.te.com/usa-en/product-172354-7.html
*
|}

==Transmission Codes==

===CAPS===
{| class="wikitable"
!Year
!Model Name
!Model Code
!Class Code
!Displacement
!Engine
!Transmission
!Transmission MB part #
|-
!1990
|Eclipse (50G)
|D21A
|MRHEL4M
|1.8L
|4G37
|KM175-5-RS
|-
!1990
|Eclipse (50G)
|D22A
|MRHML4M
|2.0L
|4G63
|KM175-5-RDS
|-
!1992
|Eclipse (50G)
|D22A
|MRHML4M
|2.0L
|4G63
|F4A22-2-MPD1
|MD996312
|-
!90-06.2 - 92-06.3
|Eclipse (50G)
|D22A
|MRPFL4M
|2.0L
|4G63T
|F4A33-1-UP61
|MD996357
|-
!92-07.1 - 94-05.1
|Eclipse (50G)
|D22A
|MRPFL4M
|2.0L
|4G63T
|F4A33-1-UP63
|MD971610
|}

===1992===
{| class="wikitable"
!Transaxle model
!Gear ratio
!Speedometer gear ratio
!Final gear ratio
!Vehicle model
!Engine model
|-
! colspan=6 |F4A21, F4A22
|-
!F4A21-2-MRD1
|A
|31/36
|4.062
|
* C62A
* Lancer IV
|4G15
|-
!F4A21-2-URD
|A
|31/36
|4.367
|
* C63A
* Lancer
|4G61-DOHC
|-
!F4A22-2-UND
|A
|28/36
|4.350
|
* N11W
* RVR
|4G93
|-
!F4A22-2-MPD3
|A
|29/36
|4.007
|
* E33A
* Galant 2000?
|4G63
|-
!F4A22-2-MQD6
|A
|30/36
|4.007
|
* E33A
* Galant AMG?
|4G63-DOHC
|-
!F4A22-2-MPD
|A
|29/36
|4.007
|
* D21A
* Base Eclipse
|4G37
|-
!F4A22-2-MPD1
|A
|29/36
|4.007
|
* D22A
* GS-DOHC Eclipse
|4G63-DOHC
|-
!F4A23-2-LNN
|B
|28/36
|3.900
|
* N34W
* Chariot
|4G64
|-
! colspan=6 |F4A33, W4A32, W4A33
|-
!F4A33-1-UP61<ref name="Note-TCC">Model without torque converter clutch (TCC)</ref>
|B
|29/36
|4.376
|
* D22A
* Eclipse GST
|4G63-DOHC T/C
|-
!F4A33-1-MNP2
|B
|28/36
|3.958
|
* Z11A
* 
|6G72-DOHC
|-
!F4A33-1-MNP2
|B
|28/36
|3.958
|
* F16A
* 
|6G72
|-
!F4A33-1-MNN4
|B
|28/36
|3.958
|
* F16A
* 
|6G72-DOHC
|-
!F4A33-1-MNN5<ref name="Note-4WS">Model with 4-wheel steering oil pump drive gear</ref>
|B
|28/36
|3.958
|
* F16A
* 
|6G72-DOHC
|-
!W4A32-1-UNN
|B
|28/36
|4.422
|
* N44W
* 
|4G64
|-
!W4A32-1-WNA
|A
|28/36
|4.750
|
* N21W
* 
|4G93
|-
!W4A32-1-UQA2
|A
|30/36
|4.422
|
* E38A
* Galant
|4G63-DOHC
|-
!W4A33-1-UP6<ref name="Note-TCC"/>
|B
|29/36
|4.422
|
* D27A
* Eclipse GSX
|4G63-DOHC T/C
|-
|}

===1993===
{| class="wikitable"
!Transaxle model
!Gear ratio
!Speedometer gear ratio
!Final gear ratio
!Vehicle model
!Engine model
|-
! colspan=6 |F4A21, F4A22
|-
!F4A22-2-MRF3
|A
|31/36
|4.007
|
* CB5A
* Lancer GTi/Colt
|4G93
|-
!F4A22-2-UNF1
|A
|28/36
|4.350
|
* N11W
* RVR
|4G93
|-
!F4A22-2-MPE4
|A
|29/36
|4.007
|
* E33A
* Galant 2000?
|4G63
|-
!F4A22-2-MQE
|A
|30/36
|4.007
|
* E33A
* Galant AMG?
|4G63-DOHC
|-
!F4A22-2-MPE
|A
|29/36
|4.007
|
* D21A
* Eclipse Base
|4G37
|-
!F4A22-2-MPE1
|A
|29/36
|4.007
|
* D22A
* GS-DOHC Eclipse
|4G63-DOHC
|-
!F4A23-2-LNQ
|B
|28/36
|3.900
|
* N14W
* EXPO-LRV
* N34W
* Chariot
|4G64
|-
! colspan=6 |F4A33, W4A32, W4A33
|-
!F4A33-1-UP61<ref name="Note-TCC"/>
|B
|29.36/28.36
|4.376
|
* D22A
* Eclipse GST
|4G63-DOHC T/C
|-
!F4A33-1-MNP8
|B
|29.36/28.36
|3.958
|
* Z11A
* 
|6G72-DOHC
|-
!F4A33-1-MNP9
|B
|29.36/28.36
|3.958
|
* F16A
* 
|6G72
|-
!F4A33-1-MNPC
|B
|28.36/28.36
|3.958
|
* F16A
* 
|6G72-DOHC
|-
!F4A33-1-MNPE
|B
|28/36
|3.958
|
* F16A
* 
|6G72-DOHC
|-
!F4A32-1-UNQ
|A
|28/36
|4.422
|
* N24W
* 
* N44W
* 
|4G64
|-
!F4A32-1-WNF1
|B
|29.36/28.36
|4.750
|
* N21W
* 
|4G93
|-
!F4A33-1-UP61<ref name="Note-TCC"/>
|B
|29.36/28.36
|4.422
|
* D27A
* Eclipse GSX
|4G63-DOHC T/C
|-
|}

Gear Ratios
{| class="wikitable"
!Gear
!A
!B
|-
!1
|2.846
|2.551
|-
!2
|1.581
|1.488
|-
!3
|1.000
|1.000
|-
!4
|0.685
|0.685
|-
!R
|2.176
|2.176
|}

==Connector Pinout==

===1991-1992 (F4A22[2])===
TCU side/ATSG numbering/Facing the back of the TCU
{| class="wikitable"
!colspan=5|Con A
!colspan=9|Con B
!colspan=7|Con C
|-
|101
|102
|103
|104
|105

|1
|2
|3
|4
|5
|6
|7
|8
|9

|51
|52
|53
|54
|55
|56
|57
|-
|106
|107
|108
|109
|110

|10
|11
|12
|13
|14
|15
|16
|17
|18

|58
|59
|60
|61
|62
|63
|64
|}


TCU side/PCB Numbering/Facing the back of the TCU
{| class="wikitable"
!colspan=5|Con A
!colspan=9|Con B
!colspan=7|Con C
|-
|A1
|A2
|A3
|A4
|A5

|B1
|B2
|B3
|B4
|B5
|B6
|B7
|B8
|B9

|C1
|C2
|C3
|C4
|C5
|C6
|C7
|-
|A6
|A7
|A8
|A9
|A10

|B10
|B11
|B12
|B13
|B14
|B15
|B16
|B17
|B18

|C8
|C9
|C10
|C11
|C12
|C13
|C14
|}

{| class="wikitable"
!ATSG #
!PCB #
!ATSG Desc.
!Circuit
!Signal
|-
|101||A1||Torque converter clutch solenoid
|-
|102||A2||Shift control solenoid valve A
|-
|103||A3||-
|-
|104||A4||Power source||Main Power (connected to A9)||12V
|-
|105||A5||Ground||GND (connected to A10, B1 and C12)||GND
|-
|106||A6||Pressure control solenoid valve
|-
|107||A7||Shift control solenoid valve B
|-
|108||A8||Engine communication signal
|-
|109||A9||Power source||Main Power (connected to A4)||12V
|-
|110||A10||Ground||GND (connected to A5, B1 and C12)||GND
|-
|
|-
|1||B1||Ground||GND (connected to A5, A10 and C12)||GND
|-
|2||B2||-
|-
|3||B3||Accelerator switch||Pull-up to 12V||0v -or- 12v
|-
|4||B4||-
|-
|5||B5||On-board diagnostic output
|-
|6||B6||Air conditioning compressor clutch relay signal
|-
|7||B7||Engine communication signal||Not connected??
|-
|8||B8||Diagnostic test mode control terminal
|-
|9||B9||Engine communication signal
|-
|10||B10||Power source (backup)||microprocessor battery backed RAM||12v
|-
|11||B11||Kickdown servo switch
|-
|12||B12||Closed throttle position switch||||0v -or- 12v
|-
|13||B13||-
|-
|14||B14||Oil temperature sensor (Low temperature side)
|-
|15||B15||Oil temperature sensor (High temperature side)
|-
|16||B16||Throttle position sensor
|-
|17||B17||Sensor ground||MPU reference ground||GND
|-
|18||B18||Vehicle-speed reed switch
|-
|
|-
|51||C1||Park/neutral position switch(P/NPS) - "P" Park position
|-
|52||C2||P/NPS - "R" Reverse position
|-
|53||C3||P/NPS - "N" Neutral position
|-
|54||C4||P/NPS - "D" Drive position
|-
|55||C5||P/NPS - "2" Second position
|-
|56||C6||P/NPS - "L" Low position
|-
|57||C7||Overdrive switch||||0v -or- 12v
|-
|58||C8||Pulse generator B
|-
|59||C9||Pulse generator B
|-
|60||C10||Pulse generator A
|-
|61||C11||Pulse generator A
|-
|62||C12||Ground||GND (connected to A5, A10, and B1)||GND
|-
|63||C13||Ignition pulse
|-
|64||C14||Power mode signal||||0v -or- 12v
|}