GROUP
HVAC
DATE

Technical Service Bulletin
SUBJECT:

MARCH, 2020

NUMBER
20-HA-001H
MODEL(S)
Multiple HEV, PHEV,
and EV Models

ELECTRIC COMPRESSOR BODY
AND INVERTER REPLACEMENT GUIDELINES

This TSB supersedes TSB 19-HA-001H to revise the available service parts configuration.
Description: This bulletin provides additional service diagnostic information and repair procedures
related to electric A/C compressors equipped in hybrid electric vehicles, plug-in hybrid electric
vehicles, and electric vehicles.
Refer to the applicable Shop Manual HVAC section of the vehicle, and then follow the procedures
outlined in this bulletin whenever a vehicle with the following symptom(s) are being diagnosed:
 A/C does not get cold enough or A/C does not operate at all.
 A/C compressor operates with very high abnormal noise.
 Related Diagnostic Trouble Code (DTC) is present.
!

WARNING

Be sure to read and follow the sections listed below from the applicable Shop Manual before
doing any work related with the high voltage system:
 General Safety Information and Caution
 High Voltage Shut-Off Procedures
Failure to follow the safety instructions may result in serious electrical injuries.
Component Overview:
The electric A/C compressor assembly has 2 major segments that are tasked with a specific function.
 INVERTER
o The inverter converts direct current to 3-phase
alternating current to control the compressor
speed for supporting the required cooling or
heating (if equipped with a heat pump system)
demand.
 Main Parts: PC Board, High voltage
capacitor, Power switch
 COMPRESSOR BODY
o The motor is a brushless DC type and converts
the electric energy into mechanical motion.
 Main Parts: Stator, Rotor, Insulator, Magnet
o The compressor is an orbital scroll that is rotated
by the motor and compresses the refrigerant
against the fixed scroll.
 Main Parts: Fixed/Orbital Scroll, Antirotating mechanism, Shaft/Bushing
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair

SUBJECT:

ELECTRIC COMPRESSOR BODY AND INVERTER REPLACEMENT GUIDELINES

NOTICE
If there’s an issue with other parts of the high voltage system (such as the battery pack,
BMS, power line, fuse, etc.), then it may affect the proper operation of the compressor.
Troubleshooting Flow Diagram:
Follow the information shown below to determine the proper diagnosis and repair procedure.

Service Procedure - Section A:
1. Remove the suction pipe fitting from compressor to gain access to the suction port.
2. Inspect the copper wire and white thread inside the suction port for burnt colored contamination.
Inspection Results – Next Steps
Contamination:
Replace the
Compressor Body

No Contamination:
Go to Section B if
other issues exist.

NOTICE
Visual inspection is not possible for 11-15MY (YFE) Sonata HEV. Replace the compressor body.

TSB #: 20-HA-001H

Page 2 of 6

SUBJECT:

ELECTRIC COMPRESSOR BODY AND INVERTER REPLACEMENT GUIDELINES

Service Procedure - Section B:
1. If there any BMS related codes unrelated to the A/C system, resolve the BMS related issues first
and then retest the A/C system function again to determine if further diagnosis is necessary.
2. Inspect the 30A High Voltage DC Protection Fuse if any of the following symptoms are present
and then retest the A/C system.



Compressor will not operate (A/C is not cold).
DTC set in DATC system (B1801 or B1695).

NOTICE
 30A High Voltage DC Fuse is located in the HPCU.
 Shut off High Voltage before inspecting the DC Fuse.

3. Inspect and diagnose the A/C system according to the DTC issues listed below.

DTC Issue List

Related DTC Category

1

CAN Communication Error

B1695, B169588

2

Operation Status Error

B1696, B169688, B1807

3

Interlock Circuit Open

B2470, B247013

4

Low Voltage Warning

B1821, B182188, B1801

5

High Voltage Warning

B1822, B182288, B1802



Refer to the following page for the inverter connector and harness pin resistance inspection
procedures.

TSB #: 20-HA-001H

Page 3 of 6

SUBJECT:

ELECTRIC COMPRESSOR BODY AND INVERTER REPLACEMENT GUIDELINES

4. Check the resistance at the electric A/C compressor High and Low Voltage connectors.
 Operation Status Error can be the result of internal inverter damage.
o Check the High Voltage Connector resistance.
o Replace the inverter if resistance is out of spec and then retest the A/C system.
High Voltage Connector - Resistance Value Checking
Inspect High Voltage input and ground
(Connector Varies By Model)
resistance between terminals ① and ②.
 OK  Over 100Ω (Open)
 NG  Below 100Ω



① HV High Voltage IG
② HV High Voltage GND
③ External Interlock (-)
④ External Interlock (+)

CAN Communication Error can be the result of poor contact at the Low Voltage Connector.
o Inspect the connector for (bent pin, poor contact, damage, etc.) and then inspect the
Low Voltage Connector resistance.
o Retest A/C operation after checking or replace the inverter if resistance is out of spec.

NOTICE
Refer to the correct CAN High / CAN Low resistance specifications after confirming the
Inverter Type by part number and VIN production date listed in the Parts Information table.


Interlock Circuit Open can be the result of poor contact at the Low Voltage Connector.
o Inspect the connector proper connection (complete insertion) and then inspect the Low
Voltage Connector interlock resistance after connecting the High Voltage Connector.
o Retest A/C operation after checking or replace the inverter if resistance is out of spec.

Low Voltage Connector - Resistance Value Checking
Inspect CAN High/Low resistance between terminals
② and ⑤.
 OK  Approx. 120 Ω
 NG  Short (≒0 Ω)
 Refer to Parts Information to verify Inverter Type.
Inspect CAN Low ground resistance between
terminals ① (DVOM + probe) and ② (DVOM - probe).
Inspect CAN High ground resistance between
terminals ① (DVOM + probe) and ⑤ (DVOM - probe).
 OK 13~14 KΩ (Conventional Type)
 OK 200~600 KΩ (High Performance DSP Type)
 NG  Short (≒0 Ω) (Both Inverter Types)

① GND 12V
② CAN Low
③ Interlock (-)
④ IG 12V
⑤ CAN High
⑥ Interlock (+)

Inspect resistance at terminals ③ and ⑥ for interlock
(-/+).
 OK  Below 1.0Ω
 NG  ∞MΩ
TSB #: 20-HA-001H

Page 4 of 6

SUBJECT:

ELECTRIC COMPRESSOR BODY AND INVERTER REPLACEMENT GUIDELINES

NOTE: Connect the high voltage connector in order
to measure the interlock resistance.
5. Once it is determined that the Inverter of the Electric A/C Compressor needs replacement, refer to
the applicable Shop Manual for the specific Removal and Installation procedure.
 Shop Manual > Heating, Ventilation and Air Conditioning > Air Conditioning System > Electric
A/C Compressor > Repair procedures > Inverter
NOTE: If the inverter removal and installation service information is not available for a specific
model, refer to the service information for a similar model until the information becomes available.

Parts Information:



Part numbers may be subject to change. Newly created part numbers may be available.
Refer to the latest Parts Catalog and filter by VIN for the applicable part numbers.
Compressor
Compressor
*Compressor
Compressor
Model Year / Model
Body
Kit
Inverter
Kit
Assembly
Inverter Type
19MY- (FE) NEXO FC
97701-M5000
97729-M5000
97728-M5000 High Performance DSP
15-17MY (LMFC) Tucson FC
Conventional
97701-4W000 97229-4W000AS 97728-4W000
19MY- (OS) KONA EV
97701-K4000
97729-K4000
97728-K4000 High Performance DSP
18MY- (AE) IONIQ PHEV
Conventional
97701-G2800
97729-G2800
97728-G2800
17MY- (AE) IONIQ HEV
Conventional
97701-G2000
97729-G2000
97728-G2000
17-19MY (AE) IONIQ EV
97701-G7000
97729-G7000
Conventional
97728-G7000
20MY- (AE) IONIQ EV
97701-G7200
97729-K4000
Conventional
97701-E6100
97729-E6100
97728-E6100
16-19MY (LFE) Sonata PHEV

97701-E6110

97729-E6110

97728-E6100

97701-E6000

97729-E6000

97728-E6000

97701-E6010

97729-E6010

97728-E6000

16-19MY (LFE) Sonata HEV

Conventional
(~3/14/2019)
High Performance DSP
(3/15/2019-)
Conventional
(SOP~4/18/2019)
High Performance DSP
(4/19/2018-)
High Performance DSP
(3/15/2019-)
Conventional

97701-4U000 97229-4R000AS 97728-E7000
NOTES:
 Compressor body kit contains the required bolt(s), gasket, and thermal paste.
 Replace only if the motor or compressor portion is damaged/contaminated.
 Compressor inverter kit contains the required bolt(s), gasket, and thermal paste.
 CAN High / CAN Low resistance specifications can differ depending on Inverter Type
which can be determined by part number and VIN production date.
 Replace the inverter whenever the pin testing results show an out of spec condition.
 Electric compressor assembly includes the compressor body and the compressor inverter.
 *Availability of electric compressor assemblies will phase out after inventory depletion.
11-15MY (YFE) Sonata HEV

TSB #: 20-HA-001H

Page 5 of 6

SUBJECT:

ELECTRIC COMPRESSOR BODY AND INVERTER REPLACEMENT GUIDELINES

Warranty Information:
Model

OP Code

Refer to Parts 97731R00
Information
97729R00
table for
appropriate
model
09760A00

Operation

Op Time

Compressor Body Kit

Refer to
WEB LTS
for the
current
LTS time

Compressor Inverter

A/C Refrigerant
Recovery & Charging
NOTE: Normal warranty procedures apply.

TSB #: 20-HA-001H

Causal Part
Refer to Parts
Information
table above for
applicable P/N

Nature

Cause

I11

N94

I11

N66

ACGAS00000

I12

N11

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