Kia Niro: Emission Control System / Troubleshooting
| Troubleshooting |
|
Symptom |
Suspected area |
|
Engine will not start or hard to start |
Vapor hose damaged or disconnected |
|
Engine struggles to start |
Malfunction of the Purge Control Solenoid Valve |
|
Rough idle or engine stalls |
Vapor hose damaged or disconnected |
|
Malfunction of the PCV valve |
|
|
Rough idle |
Malfunction of the Evaporative Emission Control System |
|
Excessive oil consumption |
Positive crankcase ventilation line clogged |
Schematic diagrams
Schematic Diagram
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Other information:
Kia Niro 2017 (DE HEV) Service Manual: Power Relay Assembly (PRA) Description and operation
Description
The Power Relay Assembly (PRA) consists of the positive and negative main relays,
pre-charge relay, pre-charge resistor and battery current sensor. It is located
inside the battery pack assembly and controls the high voltage power circuit between
the high voltage batte ...
Kia Niro 2017 (DE HEV) Service Manual: Pre-Charge Resistor Description and operation
Description
Built into the Power Relay Assembly (PRA), the Pre-Charge Resistor protects the
high voltage circuit by limiting the current while the inverter capacitor is being
charged.
1. High Voltage Power Terminal (-)
2. High Voltage Power Terminal (+)
3. ...