| Connector 1: | Automatic Transmission Input Shaft Speed (AT ISS) Sensor |
| Connector 2: | Automatic Transmission Shift Selector (Allison® MD) |
| Connector 3: | Neutral Relay (Allison® MD) |
| Connector 4: | Overdrive (OD) Defeat Switch (Allison® LCT) |
| Connector 5: | Overdrive Diode (Allison® LCT) |
| Connector 6: | Transmission Control Module (TCM) (Allison® LCT) |
| Connector 7: | Transmission Control Module (TCM) (Allison® MD) |
| Connector 8: | Turbine Shaft Speed (TSS) Sensor (Allison® LCT) |
| Connector 9: | Vehicle Speed Sensor (VSS) (Allison® LCT) |
| Connector 10: | Vehicle Speed Sensor (VSS) (Allison® MD) |
Automatic Transmission Input Shaft Speed (AT ISS) Sensor
Connector Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
A | RD/BK | OA28 | AT ISS High Signal |
B | D-BU/WH | OA27 | AT ISS Low Signal |
Automatic Transmission Shift Selector (Allison® MD)
Connector Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
1-2 | -- | -- | Not Used |
3 | BK/RD | OA74 | Instrument Panel Lamps Dimmer Switch Signal |
4 | -- | -- | Not Used |
5 | BK | OX06 | Ground |
6-7 | -- | -- | Not Used |
8 | D-BU | OA64 | SAE J1939 Serial Data Bus+ |
9-10 | -- | -- | Not Used |
11 | D-BU/OG | OA75 | Transmission Shift Selector Mode Signal |
12 | PK | OA69 | Ignition 0 Voltage |
13 | OG | OA68 | Battery Positive Voltage |
14 | -- | -- | Not Used |
15 | BK/WH | OA65 | SAE J1939 Serial Data Bus- |
16 | -- | -- | Not Used |
Neutral Relay (Allison® MD)
Connector Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
30 | YE | OA04 | Crank Voltage |
85 | PU/WH | OA76 | A/T Neutral Signal |
86 | GY | OA07 | Ground |
87 | YE/D-BU | OA05 | Crank Voltage |
87A | -- | -- | Not Used |
Overdrive (OD) Defeat Switch (Allison® LCT)
Connector Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
1 | RD/D-GN | OA10 | Overdrive Defeat Switch Signal |
2 | BK | OX03 | Ground |
3 | PK | OA12 | Ignition 1 Voltage |
4 | RD/D-GN | OA11 | Overdrive Defeat Switch Signal |
5 | BK/RD | OA13 | Instrument Panel Lamps Dimmer Switch Signal |
6 | BK | OX04 | Ground |
Overdrive Diode (Allison® LCT)
Connector Part Information
|
Pin | Wire Color | Circuit NO. | Function |
|---|---|---|---|
A | RD/D-GN | OA10 | Overdrive Defeat Switch Signal |
B | RD/D-BU | OA09 | Overdrive Defeat Switch Signal |
Transmission Control Module (TCM) (Allison® LCT)
Connector Part Information
|
Terminal Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
1 | BN | OA21 | Transmission Shift Inhibit Signal |
2 | -- | -- | Not Used |
3 | BK | OA93 | Low Reference |
4 | D-BU | OA26 | Transmission Power Take-Off Enable Signal |
5 | -- | -- | Not Used |
6 | BN/RD | OA92 | High Speed GMLAN Serial Data Bus+ |
7 | -- | -- | Not Used |
8 | BK/WH | OA61 | SAE J1939 Serial Data Bus- |
9 | BK | OX02 | Ground |
10 | OG | OA01 | Battery Positive Voltage |
11 | D-GN/WH | OA39 | 12-Volt Reference |
12-13 | -- | -- | Not Used |
14 | GY | OA53 | Internal Mode Switch Signal C |
15-16 | -- | -- | Not Used |
17 | PK | OA41 | Transmission Fluid Pressure Switch Signal 1 |
18 | WH | OA16 | Signal High - Rear |
19 | -- | -- | Not Used |
20 | D-BU | OA29 | Transmission Turbine Speed Switch Low Reference |
21-22 | -- | -- | Not Used |
23 | YE | OA23 | A/T Neutral Signal |
24 | BN | OA08 | Range Inhibit |
25 | -- | -- | Not Used |
26 | BN/RD | OA92 | High Speed GMLAN Serial Data Bus+ |
27-28 | -- | -- | Not Used |
29 | GY | OA07 | Do Not Shift Indicator Control |
30-32 | -- | -- | Not Used |
33 | YE/BK | OA37 | Shift Solenoid 2 Valve Control |
34 | WH | OA54 | Internal Mode Switch Signal P |
35 | -- | -- | Not Used |
36 | BN/WH | OA33 | PCS Valve 2 Control |
37 | -- | -- | Not Used |
38 | YE/BK | OA59 | Ignition Lock Cylinder Control Actuator Signal |
39 | D-BU/WH | OA27 | AT ISS Low Signal |
40 | L-GN | OA31 | VSS Low Signal |
41-42 | -- | -- | Not Used |
43 | WH | OA22 | PTO Engaged Signal |
44 | -- | -- | Not Used |
45 | PU | OA24 | Range Indicator |
46 | YE | OA57 | Class 2 Serial Data |
47 | BN | OA91 | High Speed GMLAN Serial Data Bus- |
48 | D-BU | OA60 | SAE J1939 Serial Data Bus+ |
49-50 | -- | -- | Not Used |
51 | WH/D-GN | OA38 | Shift Solenoid 3 Valve Control |
52 | YE | OA36 | Shift Solenoid 1 Valve Control |
53 | YE | OA52 | Internal Mode Switch Signal B |
54 | YE/BK | OA45 | TFT Sensor Signal |
55 | WH/D-BU | OA40 | PCS Valve 1 Control |
56 | -- | -- | Not Used |
57 | RD | OA44 | Transmission Fluid Pressure Switch Signal 3 |
58 | BK | OA46 | Low Reference |
59 | D-BU/BK | OA28 | AT ISS High Signal |
60 | PK | OA32 | VSS High Signal |
61 | RD/D-BU | OA09 | Overdrive Defeat Switch Signal |
62 | -- | -- | Not Used |
63 | PK | OA03 | Ignition 0 Voltage |
64 | -- | -- | Not Used |
65 | GY | OA82 | Backup Lamp Relay Control |
66 | BN/WH | OA90 | High Speed GMLAN Serial Data Bus+ |
67-68 | -- | -- | Not Used |
69 | BK | OX01 | Ground |
70 | OG | OA02 | Battery Positive Voltage |
71 | BN | OA35 | 12-Volt Reference |
72 | -- | -- | Not Used |
73 | BK/WH | OA51 | Internal Mode Switch Signal A |
74 | D-BU | OA48 | Transmission Mainline Pressure Solenoid Control |
75 | -- | -- | Not Used |
76 | PU | OA47 | Trans ID |
77 | WH/BK | OA43 | Transmission Fluid Pressure Switch Signal 4 (Reverse) |
78 | WH | OA34 | TCC PWM Solenoid Valve Control |
79 | D-BU | OA42 | Transmission Fluid Pressure Switch Signal 2 |
80 | OG | OA30 | Transmission Turbine Speed Switch Signal |
| |||||||
|---|---|---|---|---|---|---|---|
Connector Part Information |
| ||||||
Pin | Wire Color | Circuit No. | Function | ||||
1 | BK/OG | OX01 | Ground | ||||
2 | PK | OA03 | Ignition 1 Voltage | ||||
3 | OG | OA02 | Battery Positive Voltage | ||||
4 | PK | OA04 | Ignition 1 Voltage | ||||
5 | BK/OG | OX02 | Ground | ||||
6 | WH | OA15 | Transmission Power Take-Off Enable Signal | ||||
7 | -- | -- | Not Used | ||||
8 | YE | OA23 | A/T Neutral Signal | ||||
9 | -- | -- | Not Used | ||||
10 | RD/D-BU | OA09 | Transmission Auxiliary Hold Signal | ||||
11 | BN | OA21 | Transmission Shift Inhibit Signal | ||||
12-18 | -- | -- | Not Used | ||||
19 | D-BU | OA28 | PTO Control | ||||
20 | -- | -- | Not Used | ||||
21 | PU | OA24 | Engine Brake Enable Signal | ||||
22 | -- | -- | Not Used | ||||
23 | D-GN/RD | OA08 | Do Not Shift Indicator Control | ||||
24 | -- | -- | Not Used | ||||
25 | GY | OA07 | TCM MIL Request | ||||
26 | -- | -- | Not Used | ||||
27 | WH | OA18 | Signal High - Rear | ||||
28 | BK | OA25 | Low Reference | ||||
29 | D-BU | OA60 | SAE J1939 Serial Data Bus+ | ||||
30 | YE | OA57 | Class 2 SAE J1850 Serial Data | ||||
31 | -- | -- | Not Used | ||||
32 | BK/WH | OA61 | SAE J1939 Serial Data Bus- | ||||
|
| |||||||
|---|---|---|---|---|---|---|---|
Connector Part Information |
| ||||||
Pin | Wire Color | Circuit No. | Function | ||||
1 | PK | OA41 | Transmission Fluid Pressure Switch Signal C | ||||
2 | D-BU | OA42 | Transmission Fluid Pressure Switch Signal D | ||||
3 | RD | OA42 | Transmission Fluid Pressure Switch Signal E | ||||
4 | L-GN/BK | OA44 | Transmission Fluid Pressure Switch Signal R | ||||
5 | BK/WH | OA51 | Transmission Range Switch Signal A | ||||
6 | YE | OA52 | Transmission Range Switch Signal B | ||||
7 | GY | OA53 | Transmission Range Switch Signal C | ||||
8 | WH | OA54 | Transmission Range Switch Signal P | ||||
9 | -- | -- | Not Used | ||||
10 | YE/BK | OA45 | TFT Sensor Signal | ||||
11-12 | -- | -- | Not Used | ||||
13 | D-BU | OA30 | Transmission Turbine Speed Switch Signal | ||||
14 | D-BU/WH | OA28 | Transmission Turbine Speed Switch Low Reference | ||||
15 | BK/D-BU | OA32 | VSS High Signal | ||||
16 | WH/D-BU | OA31 | VSS Low Signal | ||||
17 | BK/D-BU | OA28 | AT ISS High Signal | ||||
18 | WH/D-BU | OA27 | AT ISS Low Signal | ||||
19 | -- | -- | Not Used | ||||
20 | BK | OA46 | Low Reference | ||||
21 | YE | OA47 | Trans ID | ||||
22 | RD/BK | OA48 | PC Solenoid Valve High Control (Sol. A) | ||||
23 | D-BU/WH | OA49 | PC Solenoid Valve Low Control (Sol. A) | ||||
24 | PK/BK | OA33 | PC Solenoid Valve High Control (Sol. B) | ||||
25 | BN/WH | OA34 | PC Solenoid Valve Low Control (Sol. B) | ||||
26 | PU | OA36 | Shift Solenoid C Valve Control | ||||
27 | YE/BK | OA37 | Shift Solenoid D Valve Control | ||||
28 | OG/WH | OA38 | Shift Solenoid E Valve Control | ||||
29 | WH | OA40 | TCC PWM Solenoid Valve Control | ||||
30 | D-BU/OG | OA50 | Transmission Mainline Pressure Solenoid Control | ||||
31 | BN | OA35 | 12-Volt Reference | ||||
32 | D-GN/WH | OA39 | Line Pressure Control Solenoid Valve High Control | ||||
Transmission Control Module (TCM) (Allison® MD)
Connector Part Information
|
Terminal Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
1 | BN | OA21 | Transmission Shift Inhibit Signal |
2 | -- | -- | Not Used |
3 | BK | OA72 | Low Reference |
4-5 | -- | -- | Not Used |
6 | BN/RD | OA92 | High Speed GMLAN Serial Data Bus+ |
7 | -- | -- | Not Used |
8 | BK/WH | OA61 | SAE J1939 Serial Data Bus- |
9 | BK | OX02 | Ground |
10 | OG | OA01 | Battery Positive Voltage |
11 | D-GN/WH | OA39 | Shift Solenoid Supply Voltage |
12 | GY | OA56 | 5-Volt Reference |
13-15 | -- | -- | Not Used |
16 | WH | OA55 | Transmission Oil Level Sensor Signal |
17 | PK | OA41 | A/T Neutral Signal |
18-19 | -- | -- | Not Used |
20 | D-BU | OA29 | Transmission Turbine Speed Switch Low Reference |
21-25 | -- | -- | Not Used |
26 | BN/RD | OA92 | High Speed GMLAN Serial Data Bus+ |
27-28 | -- | -- | Not Used |
29 | GY | OA07 | Do Not Shift Indicator Control |
30 | L-BU | OA73 | Transmission Power Take-Off Enable Signal |
31 | D-GN | OA49 | Shift Solenoid Supply Voltage (6) |
32 | -- | -- | Not Used |
33 | YE/BK | OA37 | Transmission Pressure Control Solenoid 3 |
34 | D-BU/OG | OA75 | Transmission Shift Selector Mode Signal |
35 | -- | -- | Not Used |
36 | BN/WH | OA33 | Transmission Pressure Control Solenoid 1 |
37 | WH | OA50 | Line Pressure Control Valve High Control |
38 | -- | -- | Not Used |
39 | D-BU/WH | OA27 | AT ISS Low Signal |
40 | WH/BK | OA31 | VSS Low Signal |
41 | PU/WH | OA76 | Neutral Relay Signal |
42 | YE | OA70 | Transmission Auxiliary Hold Signal |
43 | WH | OA22 | PTO Enable Signal |
44 | -- | -- | Not Used |
45 | PU | OA24 | Range Indicator |
46 | -- | -- | Not Used |
47 | BN | OA91 | High Speed GMLAN Serial Data Bus- |
48 | PK | OA80 | SAE J1939 Serial Data Bus+ |
49-50 | -- | -- | Not Used |
51 | WH/D-GN | OA38 | Transmission Shift Solenoid (1) |
52 | YE | OA36 | Transmission Pressure Control Solenoid 2 |
53 | -- | -- | Not Used |
54 | YE/BK | OA45 | TFT Sensor Signal |
55 | WH/D-BU | OA40 | Transmission Pressure Control Solenoid 4 |
56-57 | -- | -- | Not Used |
58 | BK | OA46 | Low Reference |
59 | D-BU/BK | OA28 | AT ISS High Signal |
60 | BK/WH | OA32 | VSS High Signal |
61 | RD/D-BU | OA09 | Overdrive Defeat Switch Signal |
62 | -- | -- | Not Used |
63 | PK | OA03 | Ignition 0 Voltage |
64 | GY | OA71 | Transmission Shift Inhibit Signal |
65 | GY | OA82 | Backup Lamp Relay Control |
66 | BR/WH | OA90 | High Speed GMLAN Serial Data Bus+ |
67-68 | -- | -- | Not Used |
69 | BK | OX01 | Ground |
70 | OG | OA02 | Battery Positive Voltage |
71 | BN | OA35 | 12-Volt Reference |
72-73 | -- | -- | Not Used |
74 | D-BU | OA48 | Transmission Mainline Pressure Solenoid Control |
75 | -- | -- | Not Used |
76 | PU | OA47 | Trans ID |
77 | WH/BK | OA43 | Transmission Fluid Pressure Switch Signal 1 |
77-78 | -- | -- | Not Used |
80 | OG | OA30 | Transmission Turbine Speed Switch Signal |
Turbine Shaft Speed (TSS) Sensor (Allison® LCT)
Connector Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
A | OG | OA30 | Transmission Turbine Speed Switch Signal |
B | L-BU | OA29 | Transmission Turbine Speed Switch Low Reference |
Vehicle Speed Sensor (VSS) (Allison® LCT)
Connector Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
A | BK/WH | OA32 | VSS High Signal |
B | WH/BK | OA31 | VSS Low Signal |
Vehicle Speed Sensor (VSS) (Allison® MD)
Connector Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
A | BK/WH | OA32 | VSS High Signal |
B | WH/BK | OA31 | VSS Low Signal |
