Kia Niro: Cruise Control System / Troubleshooting
| Trouble Symptom Charts |
| Trouble Symptom 1 |
Trouble Symptom 2
|
Trouble symptom |
Probable cause |
Remedy |
|
The set vehicle speed varies greatly upward or downward "Surging" (repeated alternating acceleration and deceleration) occurs after setting |
Malfunction of the vehicle speed sensor circuit |
Repair the vehicle speed sensor system, or replace the part |
|
Malfunction of ECM |
Check input and output signals at ECM |
Trouble Symptom 3
|
Trouble symptom |
Probable cause |
Remedy |
|
The CC system is not canceled when the brake pedal is depressed |
Damaged or disconnected wiring of the brake pedal switch |
Repair the harness or replace the brake pedal switch |
|
Malfunction of the ECM signals |
Check input and output signals at ECM |
Trouble Symptom 4
|
Trouble symptom |
Probable cause |
Remedy |
|
The CC system is not canceled when the shift lever is moved to the "N" position
(It is canceled, however, when the brake pedal is depressed) |
Damaged or disconnected wiring of inhibitor switch input circuit |
Repair the harness or repair or replace the inhibitor switch |
|
Improper adjustment of inhibitor switch |
||
|
Malfunction of the ECM signals |
Check input and output signals at ECM |
Trouble Symptom 5
|
Trouble symptom |
Probable cause |
Remedy |
|
Cannot decelerate (coast) by using the "SET/–" switch |
Temporary damaged or disconnected wiring of "SET/–" switch input circuit
|
Repair the harness or replace the "SET/–" switch |
|
Malfunction of the ECM signals |
Check input and output signals at ECM |
Trouble Symptom 6
|
Trouble symptom |
Probable cause |
Remedy |
|
Cannot accelerate or resume speed by using the "RES/+" switch |
Damaged or disconnected wiring, or short circuit, or "RES/+" switch input
circuit |
Repair the harness or replace the "RES/+" switch |
|
Malfunction of the ECM signals |
Check input and output signals at ECM |
Trouble Symptom 7
|
Trouble symptom |
Probable cause |
Remedy |
|
CC system can be set while driving at a vehicle speed of less than 40km/h
(25mph), or there is no automatic cancellation at that speed |
Malfunction of the vehicle-speed sensor circuit |
Repair the vehicle speed sensor system, or replace the part |
|
Malfunction of the ECM signals |
Check input and output signals at ECM |
Trouble Symptom 8
|
Trouble symptom |
Probable cause |
Remedy |
|
The cruise main switch indicator lamp does not illuminate (But CC system
is normal) |
Damaged or disconnected bulb of cruise main switch indicator lamp |
Repair the harness or replace the part. |
|
Harness damaged or disconnected |
Schematic diagrams
System Block Diagram
Component Parts And
Function Outline
Component part
Function
Vehicle-speed sensor, ESP/ABS Control Module
...
Cruise Control Switch Components and components location
Components
1. Left Remote Control Switch
(Audio + Hands free + Voice)
2. Right Remote Control Switch
(Cruise+Trip Computer)
...
Other information:
Kia Niro 2017 (DE HEV) Service Manual: Smart Cruise Control (SCC) ECU Repair procedures
Removal
1.
Remove the front bumper.
(Refer to Body - "Front Bumper Cover")
2.
Disconnect the SCC radar & unit connector (A).
3.
Remove the SCC radar & ECU (B) after loosening the mounting bolts.
...
Kia Niro 2017 (DE HEV) Service Manual: Front Pillar Trim Repair procedures
Replacement
Put on gloves to protect your hands.
•
Use a plastic panel removal tool to remove interior trim pie ...