Kia Niro: High Voltage Battery Cooling System / Cooling Fan Repair procedures

Kia Niro 2017 (DE HEV) Service Manual / Hybrid Control System / High Voltage Battery Cooling System / Cooling Fan Repair procedures

Removal

•	Be sure to read and follow the “General Safety Information and Caution” before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.

•	Be sure to shut off the high voltage before doing any work related with the high voltage system(Refer to "High Voltage Shut-off Procedure"). Failure to follow the safety instructions may result in serious electrical injuries.

1.	Shut off the High Voltage circuit. (Refer to Hybrid Control System - “High Voltage Shutoff Procedure”)

2.	Remove the high voltage battery front cover. (Refer to High Voltage Battery System - "Case")

3.	Disconnect the cooling fan connector (A).

Remove the cooling fan (B) after loosening the mounting bolt and nuts.

Cooling fan mounting nut / bolt :

7.8 - 11.8 N·m (0.8 - 1.2 kgf·m, 5.8 - 8.7 lb·ft)

Installation

•	Be sure to read and follow the “General Safety Information and Caution” before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.

•	Be sure to shut off the high voltage before doing any work related with the high voltage system(Refer to "High Voltage Shut-off Procedure"). Failure to follow the safety instructions may result in serious electrical injuries.

1.	Install the cooling fan in the reverse order of removal.

Inspection

1.	Connect the KDS/GDS to the Data Link Connector (DLC).

Connect the oscilloscope probe to the BMS extension connectors.

Cooling Fan Speed Waveform:

BMS Extension Connector B01-S(20)

Cooling Fan Feedback Waveform:

BMS Extension Connector B01-S(4)

3.	Switch "ON" the ignition.

Using KDS/GDS, perform "Actuation Test" and inspect the "current and waveform in each fan operation mode".

Duty

Duty (%)	Fan Speed (rpm)
10	-
20	1,000
30	1,300
40	1,600
50	1,900
60	2,200
70	2,500
80	2,800
90	3,100
95	3,850

[Cooling Fan at 1st]

[Cooling Fan at 2nd]

[Cooling Fan at 3rd]

[Cooling Fan at 4th]

[Cooling Fan at 5th]

[Cooling Fan at 6th]

[Cooling Fan at 7th]

[Cooling Fan at 8th]

[Cooling Fan at 9th]

Cooling Fan Description and operation

Description Consisting of the main connector, the cooling fan relay and the BLDC motor, the cooling fan is controlled by the BMS ECU PWM signal which varies with the high voltage batt ...

Cooling Duct Repair procedures

Removal • Be sure to read and follow the “General Safety Information and Caution” ...

Other information:

Kia Niro 2017 (DE HEV) Service Manual: Repair procedures
Removal 1. Disconnect the battery negative cable. 2. Turn the steering wheel so that the front wheels are facing straight ahead. 3. Remove the driver airbag module. (Refer to Restraint - "Driver Airbag (DAB) ...

Kia Niro (DE HEV) Owners Manual: LKAS fail indicator
■ Type A ■ Type B The LKAS fail indicator (yellow) will illuminate with an audible warning if the LKAS is not working properly.We recommend that you contact an authorized Kia dealer. When there is a problem with the system do one of the following: Turn the system on after turning th ...