Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2007 Kia Sorento EX, 4WD, Automatic, A5SR2FACTORY OEM SERVICE PROCEDURE
2. ECM Terminal Function
CONNECTOR [C144-A]
CONNECTOR SPECIFICATIONS REFERENCE
| Pin No. | Description | Connected to |
|---|---|---|
| 1 | 2nd CAN [High] | Multi-Purpose Check Connector |
| 2 | 2nd CAN [Low] | Multi-Purpose Check Connector |
| 3 | - | |
| 4 | - | |
| 5 | - | |
| 6 | - | |
| 7 | - | |
| 8 | - | |
| 9 | - | |
| 10 | Power Steering Switch Signal input | Power Steering Switch |
| 11 | - | |
| 12 | - | |
| 13 | - | |
| 14 | - | |
| 15 | Alternator load signal input | Alternator |
| 16 | Cruise Switch ground | Cruise Switch |
| 17 | Sensor ground | Fuel Tank Pressure Sensor (FTPS) |
| 18 | Air conditioner switch "ON" signal input | Air Conditioner Control Module |
| 19 | - | |
| 20 | - | |
| 21 | Brake switch signal input | Brake Switch |
| 22 | - | |
| 23 | Brake lamp signal input | Brake Lamp |
| 24 | - | |
| 25 | Cruise Switch signal input | Cruise Switch |
| 26 | Air conditioner blower switch signal input | Air Conditioner Control Module |
| 27 | Diagnostic Data Line (K-Line) | Data Link Connector (DLC), Multi-Purpose Check Connector |
| 28 | Fuel Tank Pressure Sensor signal input | Fuel Tank Pressure Sensor (FTPS) |
| 29 | Fuel Level signal input | Fuel Lever Sensor (FLS) [in Fuel Pump] |
| 30 | - | |
| 31 | - | |
| 32 | A/C Pressure Transducer signal input | A/C Pressure Transducer (APT) |
| 33 | Sensor ground | A/C Pressure Transducer (APT) |
| 34 | - | |
| 35 | - | |
| 36 | - | |
| 37 | Canister Close Valve control output | Canister Close Valve (CCV) |
| 38 | Battery voltage supply after main relay | Main Relay |
| 39 | Battery voltage supply after main relay | Main Relay |
| 40 | Battery voltage supply after main relay | Main Relay |
| 41 | CAN [High] | ABS/ESC Control Module, AWD Control Module |
| 42 | CAN [Low] | ABS/ESC Control Module, AWD Control Module |
| 43 | Main Relay control output | Main Relay |
| 44 | Intake Air Temperature Sensor signal input | Intake Air Temperature Sensor (IATS) |
| 45 | Immobilizer communication line | Immobilizer |
| 46 | - | |
| 47 | Mass Air Flow Sensor signal input | Mass Air Flow Sensor (MAFS) |
| 48 | Sensor Ground | Accelerator Position Sensor (APS) #2 |
| 49 | Accelerator Position Sensor #2 signal input | Accelerator Position Sensor (APS) #2 |
| 50 | - | |
| 51 | Cruise "SET" lamp control output | Cruise "SET" Lamp (Cluster) |
| 52 | Vehicle speed signal input | ABS/ESP Control Module (With ABS/ESC) |
| 53 | Sensor ground | Intake Air Temperature Sensor (IATS) |
| 54 | Accelerator Position Sensor #1 signal input | Accelerator Position Sensor (APS) #1 |
| 55 | Sensor ground | Accelerator Position Sensor (APS) #1 |
| 56 | Sensor Power (+5V) | Fuel Tank Pressure Sensor (FTPS) |
| 57 | Sensor power (+5V) | Accelerator Position Sensor (APS) #2 |
| 58 | Sensor power (+5V) | A/C pressure Transducer (APT) |
| 59 | Sensor Power (+5V) | Accelerator Position Sensor (APS) #1 |
| 60 | - | |
| 61 | Engine speed signal output | Cluster (Tachometer) |
| 62 | Fuel consumption signal output | Trip Computer |
| 63 | Malfunction Indicator Lamp (MIL) control output | Cluster (Malfunction Indicator Lamp) |
| 64 | Air Conditioner Compressor Relay control output | Air Conditioner Compressor Relay |
| 65 | Cooling Fan Relay [Low] control output | Cooling Fan Relay [Low] |
| 66 | Cooling Fan Relay [High] control output | Cooling Fan Relay [High] |
| 67 | For Auto Transaxle Control | |
| 68 | Throttle Position Sensor signal (PWM) output | ABS Control Module, ESC Control Module |
| 69 | Cruise "MAIN" lamp control output | Cruise "MAIN" Lamp (Cluster) |
| 70 | Fuel Pump Relay control output | Fuel Pump Relay |
| 71 | Variable Intake Solenoid Valve control output | Variable Intake Solenoid (VIS) Valve |
| 72 | Immobilizer lamp control output | Immobilizer Lamp |
| 73 | - | |
| 74 | - | |
| 75 | - | |
| 76 | - | |
| 77 | - | |
| 78 | Purge Control Solenoid Valve control output | Purge Control Solenoid Valve (PCSV) |
| 79 | Wheel Speed Sensor [Low] signal input | Wheel Speed Sensor (WSS) (Without ABS/ESC) |
| 80 | Wheel Speed Sensor [High] signal input | Wheel Speed Sensor (WSS) (Without ABS/ESC) |
CONNECTOR [C144-B]
CONNECTOR SPECIFICATIONS REFERENCE
| Pin No. | Description | Connected to |
|---|---|---|
| 1 | ETC Motor [-] control output | ETC Motor (in ETC Module) |
| 2 | ETC Motor [+] control output | ETC Motor (in ETC Module) |
| 3 | - | |
| 4 | CVVT Oil Temperature Sensor signal input | CVVT Oil Temperature Sensor (OTS) |
| 5 | - | |
| 6 | For Auto Transaxle Control | |
| 7 | Engine Coolant Temperature Sensor signal input | Engine Coolant Temperature Sensor (ECTS) |
| 8 | Manifold Absolute Pressure Sensor signal input | Manifold Absolute Pressure Sensor (MAPS) |
| 9 | - | |
| 10 | - | |
| 11 | Sensor power (+5V) | Manifold Absolute Pressure Sensor (MAPS) |
| 12 | Battery voltage supply after ignition switch | Ignition Switch |
| 13 | Sensor power (+5V) | Throttle Position Sensor (TPS) #2 |
| 14 | Sensor ground | Throttle Position Sensor (TPS) #1 |
| 15 | Sensor power (+5V) | Camshaft Position Sensor (CMPS) [Bank 2] |
| 16 | Sensor power (+5V) | Throttle Position Sensor (TPS) #1 |
| 17 | Sensor ground | Camshaft Position Sensor (CMPS) [Bank 2] |
| 18 | Sensor ground | Camshaft Position Sensor (CMPS) [Bank 1] |
| 19 | Ignition Coil (Cylinder #6) control output | Ignition Coil (Cylinder #6) |
| 20 | - | |
| 21 | Crankshaft Position Sensor [High] signal input | Crankshaft Position Sensor (CKPS) |
| 22 | - | |
| 23 | Sensor Shield | Crankshaft Position Sensor (CKPS), Knock Sensor (KS) #1, 2 |
| 24 | Camshaft Position Sensor [Bank 2] signal input | Camshaft Position Sensor (CMPS) [Bank 2] |
| 25 | Camshaft Position Sensor [Bank 1] signal input | Camshaft Position Sensor (CMPS) [Bank 1] |
| 26 | - | |
| 27 | - | |
| 28 | Sensor ground | HO2S (B2/S1) |
| 29 | Sensor ground | HO2S (B2/S2) |
| 30 | Sensor ground | HO2S (B1/S1) |
| 31 | Sensor ground | HO2S (B1/S2) |
| 32 | Sensor power (+5V) | Camshaft Position Sensor (CMPS) [Bank 1] |
| 33 | Sensor ground | Engine Coolant Temperature Sensor (ECTS) |
| 34 | Sensor ground | Manifold Absolute Pressure Sensor (MAPS), CVVT Oil Temperature Sensor (OTS) |
| 35 | Power ground | Chassis Ground |
| 36 | Power ground | Chassis Ground |
| 37 | Power ground | Chassis Ground |
| 38 | Power ground | Chassis Ground |
| 39 | Power ground | Chassis Ground |
| 40 | Ignition Coil (Cylinder #4) control output | Ignition Coil (Cylinder #4) |
| 41 | Crankshaft Position Sensor [Low] signal input | Crankshaft Position Sensor (CKPS) |
| 42 | - | |
| 43 | - | |
| 44 | - | |
| 45 | - | |
| 46 | - | |
| 47 | - | |
| 48 | Throttle Position Sensor #1 signal input | Throttle Position Sensor (TPS) #1 |
| 49 | Heated Oxygen Sensor [Bank 1 / Sensor 1] signal input | HO2S (B1/S1) |
| 50 | Heated Oxygen Sensor [Bank 1 / Sensor 2] signal input | HO2S (B1/S2) |
| 51 | Heated Oxygen Sensor [Bank 2 / Sensor 1] signal input | HO2S (B2/S1) |
| 52 | Heated Oxygen Sensor [Bank 2 / Sensor 2] signal input | HO2S (B2/S2) |
| 53 | Knock Sensor (KS) #2 [High] signal input | Knock Sensor (KS) #2 [High] |
| 54 | Knock Sensor (KS) #2 [Low] signal input | Knock Sensor (KS) #2 [Low] |
| 55 | Knock Sensor (KS) #1 [Low] signal input | Knock Sensor (KS) #1 [Low] |
| 56 | Knock Sensor (KS) #1 [High] signal input | Knock Sensor (KS) #1 [High] |
| 57 | Throttle Position Sensor #2 signal input | Throttle Position Sensor (TPS) #2 |
| 58 | Sensor ground | Throttle Position Sensor (TPS) #2 |
| 59 | - | |
| 60 | Ignition Coil (Cylinder #2) control output | Ignition Coil (Cylinder #2) |
| 61 | CVVT Oil Control Valve [Bank 2] control output | CVVT Oil Control Valve (OCV) [Bank 2] |
| 62 | CVVT Oil Control Valve [Bank 1] control output | CVVT Oil Control Valve (OCV) [Bank 1] |
| 63 | Injector (Cylinder #2) control output | Injector (Cylinder #2) |
| 64 | Injector (Cylinder #3) control output | Injector (Cylinder #3) |
| 65 | - | |
| 66 | - | |
| 67 | Heated Oxygen Sensor [Bank 2 / Sensor 1] Heater control output | HO2S (B2/S1) |
| 68 | Injector (Cylinder #4) control output | Injector (Cylinder #4) |
| 69 | Injector (Cylinder #5) control output | Injector (Cylinder #5) |
| 70 | Heated Oxygen Sensor [Bank 1 / Sensor 1] Heater control output | HO2S (B1/S1) |
| 71 | Injector (Cylinder #6) control output | Injector (Cylinder #6) |
| 72 | Injector (Cylinder #1) control output | Injector (Cylinder #1) |
| 73 | Heated Oxygen Sensor [Bank 2 / Sensor 2] Heater control output | HO2S (B2/S2) |
| 74 | Heated Oxygen Sensor [Bank 1 / Sensor 2] Heater control output | HO2S (B1/S2) |
| 75 | - | |
| 76 | Power Supply (B+) | Battery |
| 77 | Ignition Coil (Cylinder #3) control output | Ignition Coil (Cylinder #3) |
| 78 | Ignition Coil (Cylinder #5) control output | Ignition Coil (Cylinder #5) |
| 79 | Ignition Coil (Cylinder #1) control output | Ignition Coil (Cylinder #1) |
| 80 | - |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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