Hyundai Kona: ISG (Idle Stop & Go) System / Alternator Repair procedures

Removal
1.
Turn ignition switch OFF and disconnect the battery negative (-) battery.
2.
Disconnect the alternator "B" terminal (A) after loosening the mounting nut.

3.
Disconnect the alternator connector (A).
4.
Release the coolant hose bracket (B) after loosening the mounting bolt.

5.
Remove the engine room under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
6.
Using a hexagon wrench, loosen the tensioner (A) by turning it clockwise.
7.
Remove the drive belt (B).

8.
Remove the pully (A) after loosening the mounting bolt.
9.
Remove the alternator mounting bracket (B) after loosening the lower mounting bolts.
10.
Remove the alternator mounting upper bolt (C).

11.
Remove the alternator (A).

Installation
1.
Install in the reverse order of removal.
Alternator upper mounting bolt :
29.4 - 41.2 N.m (3.0 - 4.2 kgf.m, 21.7 - 30.4 Ib-ft)
Alternator lower mounting bolt :
21.6 - 32.4 N.m (2.2 - 3.3 kgf.m, 15.9 - 23.8 Ib-ft)
Disassembly
1.
Remove the rear cover (A).

2.
Remove the after loosening the mounting bolts.
  
When removing, be careful that other parts are not damaged.

3.
Remove the OAP cap (A).

  
When installing, replace with new OAP cap.
4.
Using the SST (09373-27000), remove the OAP pulley (A).

5.
Remove the rectifier assembly (A) after disconnecting the stator leads.

6.
Loosen the through bolts (A).

7.
Disconnect the rotor (A) and housing (B).

Inspection
[Rotor]
1.
Check for continuity between the slip rings (C).

2.
Check that there is no continuity between the slip rings and the rotor (B) or rotor shaft (A).
3.
If the rotor fails either continuity checks, replace the alternator.
[Stator]
1.
Check that there is continuity between each pair of leads (A).

2.
Check that there is no continuity between each lead and the coil core.
3.
If the coil fails either continuity checks, replace the alternator.
Reassembly
1.
Reassemble in the reverse order of disassembly.
  
When reassembling OAP pulley, replace with new OAP cap.
Alternator Schematic diagrams
Circuit Diagram    • COM signal - LIN communication control ...

Starter Description and operation
Description The starting system consists of the battery, starter, solenoid switch, ignition switch, inhibitor switch (A/T), clutch pedal switch (M/T), ignition lock switch, conne ...

Other information:

Hyundai Kona (OS) 2018-2020 Service Manual: Repair procedures
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Hyundai Kona (OS) 2018-2020 Service Manual: Troubleshooting
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