23-AT-001G

GROUP
NUMBER
AUTOMATIC
TRANSMISSION
DATE
Technical Service Bulletin
SUBJECT:
MARCH, 2023
23-AT-001G
MODEL(S)
G70 (IK), G80 (DH),
G80 (RG3), G90 (HI),
GV80 (JX1), GV70 (JK1)
AUTOMATIC TRANSMISSION SOLENOID DTC P0741, P0743,
P0748, P0753, P0758, P0763, P0768, P076A, P076D, P0773,
P0785, P078A, P2709
This TSB supersedes TSB 21-AT-003G to add GV70 (JK1).
DESCRIPTION: When servicing a vehicle with a “Check Engine light” and any of the DTCs listed
below, follow the Service Procedure to replace the related solenoid and E-module or park position
switch.
APPLICABLE VEHICLES:
2019~
2019~20
2019~
G70 (IK)
G80 (DH)
G90 (HI)
2021~ G80 (RG3)
2021~ GV80 (JX1)
2022~ GV70 (JK1)
DTC LIST WITH PART NUMBER INFORMATION: Refer to the parts catalog for the part number.
DTC
DESCRIPTION
PNC
PART NO.
P074100
Torque converter clutch circuit performance or stuck off
46202A
46313-3B01*
P074300
Torque Converter Clutch Circuit Electrical (TC)
46202A
46313-3B01*
P074800
Line Pressure Control Solenoid Valve A Electrical (LP)
46313A
46313-3B60*
P075300
Shift Control Solenoid Valve A Electrical (UD)
46313
46313-4J10*
P075800
Shift Control Solenoid Valve B Electrical (6)
46313
46313-4J10*
P076300
Shift Control Solenoid Valve C Electrical (35R)
46313E
46313-4J20*
P076800
Shift Control Solenoid D (4&OD)
46313E
46313-4J20*
P076A00
Park System fault – Park position switch
42700E
46313D
42700-4J***
46313-3B***
P076D00
ON/OFF Solenoid C – (Park circuit – SBW)
46313D
46313-3B***
P077300
Shift Control Solenoid Valve E Electrical (27)
46313
46313-4J10*
P078500
ON/OFF Solenoid A (Drive circuit – SBW)
46313D
46313-3B03*
P078A00
ON/OFF Solenoid B (Reverse circuit – SBW)
46313D
46313-3B03*
P270900
Shift Control Solenoid Valve F Electrical (8LR)
46313
46313-4J10*
46305C
46305-4****
All
E-Module
Circulate To: Service Manager, Warranty Manager, Service Advisors, Technicians, Fleet
Repair
SUBJECT:
ATM SOLENOID DTC P0741, P0743, P0748, P0753, P0758, P0763, P0768, P076A, P076D,
P0773, P0785, P078A & P2709
WARRANTY INFORMATION:
MODEL
OP CODE
G70 (IK)
G80 (DH)
G90 (HI)
G80 (RG3) 3.5T
GV80 (JX1) 3.5T
GV70 (JK1) 3.5T
45775R8T
G80 (RG3) 2.5T
GV80 (JX1) 2.5T
GV70 (JK1) 2.5T
45775R8L
ALL
42700R00
OPERATION
Solenoid valve
assy.
OP TIME
CAUSAL
PART
NATURE
CODE
CAUSE
CODE
Refer to
WEBLTS for
current LTS
Refer to part
numbers in the
table on Page
1
I3A
ZZ3
Park position
switch
NOTE: Normal Warranty Applies
SERVICE PROCEDURE:
1.
Attach a GDS and select DTC Analysis and A/T menu. Record the DTC and description.
Delete the DTC.
2.
From the GDS home screen, select Data Analysis and A/T menu and the solenoid
parameters shown below. If the solenoids show:
 Continuous and changing output while driving, the wiring currently has no open/short
circuits. Go to Step 4.
 No continuous and changing output, go to Step 3.
TSB #: 23-AT-001G
Page 2 of 12
SUBJECT:
ATM SOLENOID DTC P0741, P0743, P0748, P0753, P0758, P0763, P0768, P076A,
P076D, P0773, P0785, P078A & P2709
3.
Visually check the control wiring harness between the TCM and transmission for a
damaged wire or connector. Check for an open/short circuit.
 If so, repair or replace the control harness and drive the vehicle to confirm the repair.
 If no damage is found, go to Step 4.
4.
Record the audio preset stations and disconnect the negative battery terminal.
5.
Locate the harness connector on the
passenger side of the transmission.
Press the tab in the center of the latch and
push the latch upward.
Push the connector up to disconnect the
connector from the valve body.
To gain better access to the connector, place
a support under the rear transmission
support, loosen the bolts about ½ inch and
lower the support about ½ inch.
6.
Use an 8mm or 5/16” hex wrench and remove
the fill plug.
TSB #: 23-AT-001G
Page 3 of 12
SUBJECT:
7.
ATM SOLENOID DTC P0741, P0743, P0748, P0753, P0758, P0763, P0768, P076A, P076D,
P0773, P0785, P078A & P2709
Use an 8mm or 5/16” hex socket and remove
the drain plug and drain the ATF. Reinstall
the drain plug.
Torque: 17~18 lb.ft (2.3~2.5 kgf.m, 22~24
N.m)
Remove the oil pan.
8.
Remove 10 bolts that secure the valve body
to the case and remove the valve body.
Note the location of the 3 black bolts (shown
with black arrow).
If the valve body is stuck in the transmission,
insert a screwdriver between the valve body
and case and carefully pull the valve body out
of the transmission.
9.
Remove 9 bolts and remove the E-module.
TSB #: 23-AT-001G
Page 4 of 12
SUBJECT:
ATM SOLENOID DTC P0741, P0743, P0748, P0753, P0758, P0763, P0768, P076A,
P076D, P0773, P0785, P078A & P2709
10. Record the 8-digit code on the solenoid.
11. Refer to the solenoid DTC recorded in Step 1
and replace the related solenoid.
DTC
SOLENOID
PNC
P075300
UD
46313
P076800
4&OD
46313E
P076300
35R
46313E
P077300
27
46313
P075800
6
46313
P270900
8LR
46313
D
46313D
P078500
R
46313D
P078A00
P
36313D
P076D00
P074300
TC
46202A
P074800
LP
46313A
12. For UD, 4&OD, 35R, 27, 6 and 8LR
solenoids:
Remove the bolt and remove the solenoid
support.
TSB #: 23-AT-001G
Page 5 of 12
SUBJECT:
ATM SOLENOID DTC P0741, P0743, P0748, P0753, P0758, P0763, P0768, P076A, P076D,
P0773, P0785, P078A & P2709
13. Use a magnet to remove the pin that secures
the affected solenoid.
Pull out the affected solenoid and install the
new solenoid.
Reinstall the pin.
Reinstall the solenoid support using one bolt.
14. For R, D, P, TC and LP solenoids:
Use a 5mm hex wrench or socket to remove 4
bolts that secure the support to the valve
body and remove the support.
15. Pull out the related solenoid and install a new
solenoid.
Reinstall the support.
TSB #: 23-AT-001G
Page 6 of 12
SUBJECT:
ATM SOLENOID DTC P0741, P0743, P0748, P0753, P0758, P0763, P0768, P076A,
P076D, P0773, P0785, P078A & P2709
16. Install a new E-module.
Install 9 bolts and torque to specification.
NOTE: Install the short bolt in the location
shown in the circle.
Torque: 7~9 lb.ft (1.0~1.2 kgf.m, 10~12
N.m)
17. FOR SHIFT-BY-WIRE (SBW):
FOR SHIFT-BY-CABLE (SBC):
Confirm that 4 O-rings are seated in the case. Confirm 5 O-rings are seated in the case.
18. Place the valve body on a transmission jack.
Rotate the park switch counter-clockwise and
carefully raise the valve body and insert the
manual valve into the shift lever.
Install the valve body fully into the
transmission case.
NOTICE
Confirm the manual valve pin
faces outward from the valve
body.
TSB #: 23-AT-001G
Page 7 of 12
SUBJECT:
ATM SOLENOID DTC P0741, P0743, P0748, P0753, P0758, P0763, P0768, P076A, P076D,
P0773, P0785, P078A & P2709
19. Install 3 black bolts in the locations shown
(black arrow).
Install 7 brass bolts in the location shown (red
arrows).
Torque the bolts to specification.
Torque: 7~9 lb.ft (1.0~1.2 kgf.m, 10~12
N.m)
20. Use a 90° pick or similar tool to pull the
connector down into position on the valve
body.
Pull the latch down until it clicks into the tab.
21. Confirm the O-ring is installed at the location
shown.
Reinstall the valve body cover and torque to
specification.
Torque: 10~12 lb.ft (1.4~1.6 kgf.m, 14~16
N.m)
22. Reconnect the negative battery terminal.
Reset the audio preset stations.
TSB #: 23-AT-001G
Page 8 of 12
SUBJECT:
ATM SOLENOID DTC P0741, P0743, P0748, P0753, P0758, P0763, P0768, P076A,
P076D, P0773, P0785, P078A & P2709
23. With the engine off, lift the vehicle on a hoist.
Use an 8mm or 5/16” hex socket and remove
the fill plug and washer.
24. Remove the overflow plug.
Use a fluid pump or suction gun to add
SP-IV-RR ATF through the fill plug until ATF
flows from the overflow plug.
Reinstall the fill plug and overflow plug.
.
NOTICE
Use only SP-IV-RR ATF, P/N
00232-19052.
25. Attach a GDS and select vehicle, Data Analysis, A/T menu and Oil Temperature Sensor.
Drive the vehicle until the ATF is at the low end of the range of 122~140°F (50~60°C).
Move the shift lever from P-R-D-P.
TSB #: 23-AT-001G
Page 9 of 12
SUBJECT:
ATM SOLENOID DTC P0741, P0743, P0748, P0753, P0758, P0763, P0768, P076A, P076D,
P0773, P0785, P078A & P2709
26. Start the engine, shift to Park and raise the
vehicle on a hoist.
Remove the fill plug and overflow plug.
Add SP-IV-RR ATF through the fill plug until
the ATF flows out the overflow.
Reinstall the overflow plug.
Torque: 16~18 lb-ft (2.3~2.5 kgf.m, 22~24
N.m)
Reinstall the fill plug and washer.
Torque: 25~32 lb.ft (3.4~4.4 kgf.m,
33~43N.m)
ATF TEMPERATURE = 122~140°F (50~60°C)
SHIFT LEVER IN “P” AND ENGINE RUNNING
27. If the shift cable was moved to add ATF:
Install the SST (09480-D2100) or 5mm bolt in
the alignment hole of the park position switch.
Loosen the adjustment bolt shown.
Slide the adjustment bracket rearward to
remove the slack in the park cable.
Tighten the bolt to specification.
Torque: 7~8 lb-ft (0.9~1.0 kgf.m, 9~10 N.m)
TSB #: 23-AT-001G
SST
Bolt
Page 10 of 12
SUBJECT:
ATM SOLENOID DTC P0741, P0743, P0748, P0753, P0758, P0763, P0768, P076A,
P076D, P0773, P0785, P078A & P2709
28. Clear the codes and test drive the vehicle for two driving cycles (two key-on to key-off driving
cycles, including 1-2-3-4-5-6-7-8 upshifts and 8-7-6-5-4-3-2-1 downshifts). If the solenoid DTC
returns, perform the following repairs:
DTC
P074100
P074300
P074800
P075300
P075800
P076300
P076800
P076A00
P076D00
P077300
P078500
P078A00
P270900
SOLENOID DTC REPAIR PROCEDURE

Replace the transmission

Replace the control harness between the TCU and transmission.
 If the solenoid DTC does not occur again, return the vehicle to the
customer.
 If the solenoid DTC returns again, replace the TCU.
DTC
P076A00
PARK POSITION SWITCH DTC REPAIR PROCEDURE
If the DTC returns, refer to the related Shop Manual and follow the repair
diagnosis for Wiring Inspection and ETM.
29. Solenoid Oil Pressure Data Characteristics Input:
NOTICE
This procedure is necessary only for the following solenoids: P075300, P075800,
P076300, P076800, P077300.
30. Select S/W Management, Automatic
Transaxle and Oil Pressure Characteristics
Input (Solenoid valve Replacement). Select
OK and follow the prompts.
Select the type of solenoid from the drop-down
menu. Select OK.
TSB #: 23-AT-001G
Page 11 of 12
SUBJECT:
ATM SOLENOID DTC P0741, P0743, P0748, P0753, P0758, P0763, P0768, P076A, P076D,
P0773, P0785, P078A & P2709
31. Input the 8-digit code recorded in Step 10 in
the blank spaces in the GDS. Select OK.
Input the 8 digit code again and select OK.
The GDS will confirm the procedure was
completed.
32. Drive the vehicle to confirm the proper operation of the transmission.
TSB #: 23-AT-001G
Page 12 of 12