Kia Niro: Engine Control System / ETC (Electronic Throttle Control) System Troubleshooting

Kia Niro 2017 (DE HEV) Service Manual / Engine Control/Fuel System / Engine Control System / ETC (Electronic Throttle Control) System Troubleshooting

Fail-Safe Mode
Item
Fail-Safe
ETC Motor
Throttle valve stuck at 7°
TPS
TPS 1 fault
Replace it with TPS 2
TPS 2 fault
Replace it with TPS 1
TPS 1, 2 fault
Throttle Angle (°)
 Throttle valve stuck at 5°
APS
APS 1 fault
Replace it with APS 2
APS 2 fault
Replace it with APS 1
APS 1, 2 fault
Engine idle state

  

When throttle value is stuck at 7°, engine speed will be limited to below 1,500 rpm and vehicle speed to maximum of 40 - 50 km/h (25 - 31 mph).

ETC (Electronic Throttle Control) System Repair procedures
Inspection Throttle Position Sensor (TPS) 1. Connect the KDS/GDS on the Data Link Connector (DLC). 2. Start the engine and measure the output v ...

Manifold Absolute Pressure Sensor (MAPS) Specifications
Specification Pressure [kPa (kgf/cm², psi)] Output Voltage (V) [Vref = 5V] 20.0 (0.20, 2.9) 0.79 46.7 (0.47, ...

Other information:

Kia Niro 2017 (DE HEV) Service Manual: Heated Oxygen Sensor (HO2S) Description and operation
Description Heated Oxygen Sensor (HO2S), consisting of zirconium and alumina, is installed on both upstream and downstream of the Manifold Catalytic Converter (MCC) to detect the air/fuel ratio and send it to the ECM. The sensor output voltage varies in accordance with the air/fue ...

Kia Niro 2017 (DE HEV) Service Manual: Heated Oxygen Sensor (HO2S) Repair procedures
Inspection 1. Switch "OFF" the ignition. 2. Disconnect the HO2S connector. 3. Measure resistance between the HO2S terminals 4 and 5 [B1/S1]. Specification: 2.5 - 4.0Ω [20°C(68°F)] ...

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