Kia Niro: Hybrid Motor Control System / Resolver Sensor Repair procedures

Inspection

Hybrid Drive Motor

1.

Inspect the resolver sensor resistance.

Item
Pin
Specification
Remarks
Resistance
(Resolver sensor)
1 - 5
11.7 Ω ± 10 %
At room temperature 68°F (20°C)
2 - 6
34.5 Ω ± 10 %
3 - 7
29.5 Ω ± 10 %

2.

If the resolver sensor need to be replaced, hybrid drive motor assembly should be replaced.

(Refer to Hybrid Motor Assembly - "Hybrid Drive Motor Assembly")

Hybrid Starter Generator (HSG)

1.

Inspect the resolver sensor resistance.

Item
Pin
Specification
Remarks
Resistance
(Resolver sensor)
1 - 4
13.8 - 17.8 Ω
At room temperature 68°F (20°C)
2 - 5
26.2 - 30.2 Ω
3 - 6
26.2 - 30.2 Ω

2.

If the resolver sensor need to be replaced, HSG assembly should be replaced.

(Refer to Hybrid Motor Assembly - "Hybrid Starter Generator")

Resolver Calibration

Perform the resolver calibration using the KDS / GDS after replacing or reinstalling the below components.

Hybrid Drive Motor installation

Hybrid Starter Generator (HSG) installation

Motor Control Unit (MCU) replacement

Engine clutch system replacement

Resolver Sensor Schematic diagrams
Part Circuit Diagram [Hybrid Drive Motor] [HSG] ...

Motor Temperature Sensor Description and operation
Description The motor temperature has the large effect on the motor output. When the motor over heats, it’s IPM and stator coil may deform and their performance may be affected. To ...

Other information:

Kia Niro 2017 (DE HEV) Service Manual: Description and operation
Description The HCU (Hybrid Control Unit) controls the overall hybrid systems and is connected with each of the control modules (ECM, TCM, MCU, BMS, ECU, etc.) via CAN. The hybrid system is controlled based on the brake switch signals.    ...

Kia Niro 2017 (DE HEV) Service Manual: Fuel Pressure Control Valve (FPCV) Repair procedures
Inspection 1. Switch "OFF" the ignition and disconnect the negative (-) battery terminal. 2. Disconnect the fuel pressure regulator valve connector. 3. Measure resistance between the fuel pressure regulator ...

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