Automatic Transmission System (SBC)
Transmission Control Module (TCM) Circuit Diagrams
In this manual: Automatic Transmission System (SBC)
~7min read
1. TCM Connector and Terminal Function

2. TCM Terminal Function
Connector| Pin | Description | Pin | Description |
| 1 | Battery Charge | 48 | - |
| 2 | Battery Charge | 49 | - |
| 3 | Power (IG 1) | 50 | 27 Brake Control Solenoid Valve |
| 4 | Ground | 51 | - |
| 5 | Ground | 52 | On/Off Solenoid Valve |
| 6 | Ground | 53 | - |
| 7 | - | 54 | Input Speed Sensor Signal |
| 8 | - | 55 | Mid Speed Sensor Signal |
| 9 | - | 56 | Output Speed Sensor Signal |
| 10 | - | 57 | - |
| 11 | - | 58 | - |
| 12 | - | 59 | - |
| 13 | Inhibitor Switch Signal "S1" | 60 | - |
| 14 | Transmission Fluid Temperature Sensor (+) | 61 | Sport Mode Select Switch |
| 15 | - | 62 | - |
| 16 | Sport Mode Up Switch | 63 | - |
| 17 | Sport Mode Down Switch | 64 | - |
| 18 | - | 65 | CAN Communication Line (Low) |
| 19 | - | 66 | - |
| 20 | - | 67 | - |
| 21 | Inhibitor Switch Signal "S2" | 68 | - |
| 22 | "S4" Inhibitor Switch Signal | 69 | - |
| 23 | Inhibitor Switch Signal "S3" | 70 | Solenoid Power Supply 2 |
| 24 | - | 71 | - |
| 25 | - | 72 | - |
| 26 | - | 73 | Solenoid Power Supply (4 and OD/C, 35R/C, 6/C, L/P) |
| 27 | - | 74 | - |
| 28 | - | 75 | - |
| 29 | Solenoid Power Supply (UD/C, 27/B, 8LR/B, D/C) | 76 | - |
| 30 | Input Speed Sensor Power | 77 | - |
| 31 | Mid Speed Sensor Power | 78 | - |
| 32 | - | 79 | - |
| 33 | - | 80 | - |
| 34 | - | 81 | - |
| 35 | - | 82 | - |
| 36 | - | 83 | - |
| 37 | - | 84 | - |
| 38 | Oil Temperature Sensor (-) | 85 | CCP CAN Low |
| 39 | - | 86 | CCP CAN High |
| 40 | - | 87 | CAN Communication Line (High) |
| 41 | 35R Clutch Control Solenoid Valve | 88 | - |
| 42 | 8LR Brake Control Solenoid Valve | 89 | - |
| 43 | Overdrive Clutch Control Solenoid Valve | 90 | - |
| 44 | 6 Clutch Control Solenoid Valve | 91 | - |
| 45 | Line Pressure Control Solenoid Valve | 92 | - |
| 46 | Torque Converter Damper Clutch Control Solenoid Valve | 93 | Output Speed Sensor Power |
| 47 | 4 and OD Clutch Control Solenoid Valve | 94 | - |
3. TCM Terminal Input/Output Signals
| Pin | Description | Condition | Input/Output Value | |
| Type | Level | |||
| 1 | Battery Charge | ON | Power | 0 V/Battery Voltage Level |
| 2 | OFF | 9 V < Battery Voltage Level < 16 V | ||
| 3 | Power (IG 1) | ON | Input | Battery Voltage Level |
| OFF | 0 V Voltage Level | |||
| 4 | Ground | - | Ground | 0 V (Ground Level) |
| 5 | Ground | - | Ground | 0 V (Ground Level) |
| 6 | Ground | - | Ground | 0 V (Ground Level) |
| 7 | - | ON | Output | Approx. 1 V |
| OFF | Battery Voltage Level | |||
| 8 | - | - | Output | 0 V/Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 9 | - | - | - | - |
| 10 | - | ON | Pulse Input | Voltage level approx. 9 V ~ 11 V |
| OFF | 0 V Voltage Level | |||
| 11 | - | - | - | - |
| 12 | - | - | - | - |
| 13 | Inhibitor Switch Signal "S1" | ON | Input | Battery Voltage Level |
| OFF | 0 V (Ground) | |||
| 14 | Transmission Fluid Temperature Sensor (+) | - | Input | Maximum voltage level 5 V |
| 15 | - | - | - | - |
| 16 | Sport Mode Up Switch | ON | Input | 0 V (Ground) |
| OFF | Battery Voltage Level | |||
| 17 | Sport Mode Down Switch | ON | Input | 0 V (Ground) |
| OFF | Battery Voltage Level | |||
| 18 | - | - | Input | 0 V/Battery Voltage Level |
| 19 | - | - | - | - |
| 20 | - | - | - | - |
| 21 | Inhibitor Switch Signal "S2" | ON | Input | Battery Voltage Level |
| OFF | 0 V (Ground) | |||
| 22 | "S4" Inhibitor Switch Signal | ON | Input | Battery Voltage Level |
| OFF | 0 V (Ground) | |||
| 23 | Inhibitor Switch Signal "S3" | ON | Input | Battery Voltage Level |
| OFF | 0 V (Ground) | |||
| 24 | - | - | - | - |
| 25 | - | - | - | - |
| 26 | - | - | Output | 0 V/Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 27 | - | - | - | - |
| 28 | - | - | Output | 0 V/Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 29 | Solenoid Power Supply (UD/C, 27/B, 8LR/B, D/C) |
- | Power | Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 30 | Input Speed Sensor Power | ON | Output | Approx. 9 V voltage level |
| OFF | 0 V | |||
| 31 | Mid Speed Sensor Power | ON | Output | Approx. 9 V voltage level |
| OFF | 0 V | |||
| 32 | - | - | - | - |
| 33 | - | - | - | - |
| 34 | - | - | - | - |
| 35 | - | - | - | - |
| 36 | - | - | - | - |
| 37 | - | - | - | - |
| 38 | Oil Temperature Sensor (-) | - | Input | Minimum voltage level 0 V |
| 39 | - | - | - | - |
| 40 | - | - | - | - |
| 41 | 35R Clutch Control Solenoid Valve | - | Output | 0 V/Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 42 | 8LR Brake Control Solenoid Valve | - | Output | 0 V/Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 43 | Overdrive Clutch Control Solenoid Valve | - | Output | 0 V/Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 44 | 6 Clutch Control Solenoid Valve | - | Output | 0 V/Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 45 | Line Pressure Control Solenoid Valve | - | Output | 0 V/Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 46 | Torque Converter Damper Clutch Control Solenoid Valve | - | Output | 0 V/Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 47 | 4 and OD Clutch Control Solenoid Valve | - | Output | 0 V/Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 48 | - | - | - | - |
| 49 | - | - | - | - |
| 50 | 27 Brake Control Solenoid Valve | - | Output | 0 V/Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 51 | - | - | - | - |
| 52 | On/Off Solenoid Valve | - | Output | 0 V/Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 53 | - | ON | Output | 0 V |
| OFF | Battery Voltage Level | |||
| 54 | Input Speed Sensor Signal | ? | Pulse Input | Low: approx. 0.7 V, High: 1.4 V |
| NTU1 | ? | Maximum/minimum frequency: 9 kHz/0 Hz |
||
| 55 | Mid Speed Sensor Signal | ? | Pulse Input | Low: approx. 0.7 V, High: 1.4 V |
| NTU2 | ? | Maximum/minimum frequency: 9 kHz/0 Hz |
||
| 56 | Output Speed Sensor Signal | ? | Pulse Input | Low: approx. 0.7 V, High: 1.4 V |
| NAB | ? | Maximum/minimum frequency: 9 kHz/0 Hz |
||
| 57 | - | - | - | - |
| 58 | - | - | - | - |
| 59 | - | - | - | - |
| 60 | - | - | - | - |
| 61 | Sport Mode Select Switch | Sport Mode | Input | 0 V/Battery Voltage Level |
| Other | 9 V < Battery Voltage Level < 16 V | |||
| 62 | - | - | - | - |
| 63 | - | - | - | - |
| 64 | - | - | - | - |
| 65 | CAN Communication Line (Low) | - | - | - |
| 66 | - | - | - | - |
| 67 | - | - | - | - |
| 68 | - | - | - | - |
| 69 | - | - | - | - |
| 70 | Solenoid Power Supply 2 | - | Power | Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 71 | ? | - | - | - |
| 72 | ? | - | - | - |
| 73 | Solenoid Power Supply (4 and OD/C, 35R/C, 6/C, L/P) |
- | Power | Battery Voltage Level |
| 9 V < Battery Voltage Level < 16 V | ||||
| 74 | ? | - | - | - |
| 75 | ? | - | - | - |
| 76 | ? | - | - | - |
| 77 | ? | - | - | - |
| 78 | ? | - | - | - |
| 79 | ? | - | - | - |
| 80 | ? | - | - | - |
| 81 | ? | - | - | - |
| 82 | ? | - | - | - |
| 83 | ? | - | - | - |
| 84 | ? | - | - | - |
| 85 | ? | - | - | - |
| 86 | ? | - | - | - |
| 87 | CAN Communication Line (High) | - | - | - |
| 88 | ? | ? | ? | ? |
| 89 | ? | ? | ? | ? |
| 90 | ? | ? | ? | ? |
| 91 | ? | ? | ? | ? |
| 92 | ? | - | - | - |
| 93 | Output Speed Sensor Power | ON | Output | Approx. 9 V voltage level |
| OFF | 0 V | |||
| 94 | ? | ? | ? | ? |
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