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.
2009 Kia Rondo EX, 2.7 4FACTORY OEM SERVICE PROCEDURE
ECM Terminal Function
Connector [C401-A]
CONNECTOR (C401-A) DESCRIPTION CHART
| 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 | Ground | Cruise Control Switch |
| 17 | Sensor ground | Fuel Tank Pressure Sensor (FTPS) |
| 18 | A/C Switch "ON" signal input | A/C Control Module |
| 19 | - | - |
| 20 | - | - |
| 21 | Brake Switch 2 signal input | Brake Switch |
| 22 | - | - |
| 23 | Brake Switch 1 signal input | Brake Switch |
| 24 | - | - |
| 25 | Cruise Control Switch signal input | Cruise Control Switch |
| 26 | A/C Thermal Switch signal input | A/C Thermal Switch |
| 27 | - | - |
| 28 | Fuel Tank Pressure Sensor (FTPS) signal input | Fuel Tank Pressure Sensor (FTPS) |
| 29 | Fuel Level Sensor (FLS) signal input | Fuel Level Sensor (FLS) |
| 30 | - | - |
| 31 | - | - |
| 32 | A/C Pressure Transducer (APT) signal input | A/C Pressure Transducer (APT) |
| 33 | Sensor ground | A/C Pressure Transducer (APT) |
| 34 | - | - |
| 35 | - | - |
| 36 | - | - |
| 37 | Canister Close Valve (CCV) control output | Canister Close Valve (CCV) |
| 38 | Battery power (B+) | Main Relay |
| 39 | Battery power (B+) | Main Relay |
| 40 | Battery power (B+) | Main Relay |
| 41 | CAN [High] | Other control module, Data Link Connector (DLC), Multi-Purpose Check Connector |
| 42 | CAN [Low] | Other control module, Data Link Connector (DLC), Multi-Purpose Check Connector |
| 43 | Main Relay control output | Main Relay |
| 44 | Intake Air Temperature Sensor (IATS) signal input | Intake Air Temperature Sensor (IATS) |
| 45 | Immobilizer Communication Line | Immobilizer Control Module |
| 46 | - | - |
| 47 | Mass Air Flow Sensor (MAFS) signal input | Mass Air Flow Sensor (MAFS) |
| 48 | Sensor ground | Accelerator Position Sensor (APS) 2 |
| 49 | Accelerator Position Sensor (APS) 2 signal input | Accelerator Position Sensor (APS) 2 |
| 50 | - | - |
| 51 | Cruise "SET" Lamp control output | Cruise "SET" Lamp |
| 52 | Vehicle speed signal input | ABS/ESP Control Module |
| 53 | Sensor ground | Intake Air Temperature Sensor (IATS) |
| 54 | Accelerator Position Sensor (APS) 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 | Malfunction Indicator Lamp (MIL) |
| 64 | A/C Compressor Relay control output | A/C 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 | - | - |
| 68 | - | - |
| 69 | Cruise "MAIN" Lamp control output | Cruise "MAIN" Lamp |
| 70 | Fuel Pump Relay control output [Without Immobilizer] | Fuel Pump Relay |
| Variable Intake Solenoid (VIS) Valve control output [With Immobilizer] | Variable Intake Solenoid (VIS) Valve | |
| 71 | Variable Intake Solenoid (VIS) Valve control output [Without Immobilizer] | Variable Intake Solenoid (VIS) Valve |
| Fuel Pump Relay control output [With Immobilizer] | Fuel Pump Relay | |
| 72 | Immobilizer Lamp control output | Immobilizer Lamp |
| 73 | - | - |
| 74 | - | - |
| 75 | - | - |
| 76 | - | - |
| 77 | - | - |
| 78 | Purge Control Solenoid Valve (PCSV) control output | Purge Control Solenoid Valve (PCSV) |
| 79 | - | - |
| 80 | - | - |
Connector [C401-B]
CONNECTOR (C401-B) DESCRIPTION CHART
| Pin No. | Description | Connected to |
|---|---|---|
| 1 | ETC Motor [-] control output | ETC Motor |
| 2 | ETC Motor [+] control output | ETC Motor |
| 3 | - | - |
| 4 | CVVT Oil Temperature Sensor (OTS) signal input | CVVT Oil Temperature Sensor (OTS) |
| 5 | - | - |
| 6 | - | - |
| 7 | Engine Coolant Temperature Sensor (ECTS) signal input | Engine Coolant Temperature Sensor (ECTS) |
| 8 | Manifold Absolute Pressure Sensor (MAPS) signal input | Manifold Absolute Pressure Sensor (MAPS) |
| 9 | - | - |
| 10 | - | - |
| 11 | Sensor power (+5V) | Manifold Absolute Pressure Sensor (MAPS) |
| 12 | Battery power (B+) | 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 (CKPS) [High] signal input | Crankshaft Position Sensor (CKPS) |
| 22 | - | - |
| 23 | Sensor Shield | Knock Sensor (KS) #1 [Bank 1] |
| Knock Sensor (KS) #2 [Bank 2] | ||
| 24 | Camshaft Position Sensor (CMPS) [Bank 2] signal input | Camshaft Position Sensor (CMPS) [Bank 2] |
| 25 | Camshaft Position Sensor (CMPS) [Bank 1] signal input | Camshaft Position Sensor (CMPS) [Bank 1] |
| 26 | - | - |
| 27 | - | - |
| 28 | Sensor ground | Heated Oxygen Sensor (HO2S) [Bank 2/Sensor 1] |
| 29 | Sensor ground | Heated Oxygen Sensor (HO2S) [Bank 2/Sensor 2] |
| 30 | Sensor ground | Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] |
| 31 | Sensor ground | Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] |
| 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 (CKPS) [Low] signal input | Crankshaft Position Sensor (CKPS) |
| 42 | - | - |
| 43 | - | - |
| 44 | - | - |
| 45 | - | - |
| 46 | - | - |
| 47 | - | - |
| 48 | Throttle Position Sensor (TPS) 1 signal input | Throttle Position Sensor (TPS) 1 |
| 49 | Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] signal input | Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] |
| 50 | Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] signal input | Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] |
| 51 | Heated Oxygen Sensor (HO2S) [Bank 2/Sensor 1] signal input | Heated Oxygen Sensor (HO2S) [Bank 2/Sensor 1] |
| 52 | Heated Oxygen Sensor (HO2S) [Bank 2/Sensor 2] signal input | Heated Oxygen Sensor (HO2S) [Bank 2/Sensor 2] |
| 53 | Knock Sensor (KS) [Bank 2] [High] signal input | Knock Sensor (KS) [Bank 2] |
| 54 | Knock Sensor (KS) [Bank 2] [Low] signal input | Knock Sensor (KS) [Bank 2] |
| 55 | Knock Sensor (KS) [Bank 1] [Low] signal input | Knock Sensor (KS) [Bank 1] |
| 56 | Knock Sensor (KS) [Bank 1] [High] signal input | Knock Sensor (KS) [Bank 1] |
| 57 | Throttle Position Sensor (TPS) 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 (OCV) [Bank 2/Intake] control output | CVVT Oil Control Valve (OCV) [Bank 2/Intake] |
| 62 | CVVT Oil Control Valve (OCV) [Bank 1/Intake] control output | CVVT Oil Control Valve (OCV) [Bank 1/Intake] |
| 63 | Injector (Cylinder #2) control output | Injector (Cylinder #2) |
| 64 | Injector (Cylinder #3) control output | Injector (Cylinder #3) |
| 65 | - | - |
| 66 | - | - |
| 67 | Heated Oxygen Sensor (HO2S) [Bank 2/Sensor 1] Heater control output | Heated Oxygen Sensor (HO2S) [Bank 2/Sensor 1] |
| 68 | Injector (Cylinder #4) control output | Injector (Cylinder #4) |
| 69 | Injector (Cylinder #5) control output | Injector (Cylinder #5) |
| 70 | Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] Heater control output | Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] |
| 71 | Injector (Cylinder #6) control output | Injector (Cylinder #6) |
| 72 | Injector (Cylinder #1) control output | Injector (Cylinder #1) |
| 73 | Heated Oxygen Sensor (HO2S) [Bank 2/Sensor 2] Heater control output | Heated Oxygen Sensor (HO2S) [Bank 2/Sensor 2] |
| 74 | Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] Heater control output | Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] |
| 75 | - | - |
| 76 | Battery power (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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