M20C-FKS ENGINE MECHANICAL CYLINDER HEAD DISASSEMBLY
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during cylinder head removal/installation are shown below.
| Replaced Part or Performed Procedure | Necessary Procedure | Effect/Inoperative Function when Necessary Procedure not Performed | Link |
|---|---|---|---|
| Replacement of ECM | Perform Vehicle Identification Number (VIN) or frame number registration | DTC P063051 is output | ( 202304,999999,_51,_087036,_0418131,RM1000000029CMS,)
|
| Perform Total Short Trip Estimate Registration | - | ||
GPF Deposition Values:
·
GPF deposition values save ·
GPF deposition values write |
·
MIL comes on ·
Deterioration of fuel efficiency |
||
| Update ECU security key | Vehicle Control History (RoB) are stored | (202405,999999,_V1,_083041,_0402305,RM100000002ISNL,)
|
|
| ECU communication ID registration | Engine start function | See Service Bulletin for the registration method. | |
| Replacement of ECM | for K121:
If transaxle compensation code read from ECM -
Transfer transaxle compensation code -
Deceleration sensor zero point calibration -
CVT oil pressure calibration -
Perform road test to allow ECM to learn |
·
Large shift shock ·
Deterioration of fuel efficiency |
for Initialization:
( 202405,202409,_52,_138176,_0584691,RM100000002JGMX,202409,999999,_52,_138176,_0584691,RM100000002NRHB,)
for Registration: ( 202304,999999,_52,_138176,_0584691,RM1000000029HF6,)
|
for K121:
If transaxle compensation code not read from ECM -
Reset transaxle compensation code -
Deceleration sensor zero point calibration -
CVT oil pressure calibration -
Perform road test to allow ECM to learn |
|||
| Replacement of ECM | for K121F:
If transaxle compensation code read from ECM -
Transfer transaxle compensation code -
Deceleration sensor zero point calibration -
CVT oil pressure calibration -
Perform road test to allow ECM to learn |
·
Large shift shock ·
Deterioration of fuel efficiency |
for Initialization:
( 202405,202409,_52,_138817,_0596468,RM100000002JJ5Q,202409,999999,_52,_138817,_0596468,RM100000002NRBH,)
for Registration: ( 202304,999999,_52,_138817,_0596468,RM100000002AWR8,)
|
for K121F:
If transaxle compensation code not read from ECM -
Reset transaxle compensation code -
Deceleration sensor zero point calibration -
CVT oil pressure calibration -
Perform road test to allow ECM to learn |
|||
| Exhaust manifold | Reset total short trip estimate | ·
MIL comes on ·
Deterioration of fuel efficiency |
(202405,999999,_51,_087036,_0418131,RM100000002IF8T,)
|
| Replacement of front exhaust pipe assembly | GPF deposition value clear | ·
MIL comes on ·
Deterioration of fuel efficiency |
(202405,999999,_51,_087036,_0418131,RM100000002IF8T,)
|
·
Throttle body with motor assembly ·
Cam timing control motor with EDU assembly (Including removal and installation) ·
Camshaft timing gear assembly (Including removal and installation) ·
Cylinder head sub-assembly ·
Camshaft (for intake or exhaust camshaft) ·
Camshaft timing exhaust gear assembly ·
Piston or piston ring ·
Mass air flow meter sub-assembly ·
Port fuel injector assembly ·
Direct fuel injector assembly ·
Fuel pump (for low pressure side) ·
Fuel pump assembly (for high pressure side) ·
Fuel pressure sensor (for low pressure side) ·
Fuel pressure sensor (for high pressure side) ·
Air fuel ratio sensor (sensor 1) ·
Air fuel ratio sensor (sensor 2) ·
Engine coolant temperature sensor ·
Spark plug ·
Ignition coil assembly ·
EGR valve assembly ·
Air intake system parts ·
Gas leaks from exhaust system ·
Knock control sensor |
Inspection after repair | ·
Poor idle, etc. ·
Engine start function, etc. |
(202405,999999,_51,_087036,_0418131,RM100000002IF8T,)
|
for K121:
Replacement of continuously variable transaxle assembly |
Air bleed oil pump with motor assembly | Stop and start system | (202405,202409,_51,_083056,_0694819,RM100000002LU7O,202409,999999,_51,_083056,_0402418,RM100000002NSFT,)
|
·
Input transaxle compensation code into ECM ·
Perform reset memory ·
Deceleration sensor zero point calibration ·
CVT oil pressure calibration ·
Perform road test to allow ECM to learn |
·
Large shift shock ·
Deterioration of fuel efficiency |
for Initialization:
( 202405,202409,_52,_138176,_0584691,RM100000002JGMX,202409,999999,_52,_138176,_0584691,RM100000002NRHB,)
for Registration: ( 202304,999999,_52,_138176,_0584691,RM1000000029HF6,)
|
|
for K121F:
Replacement of continuously variable transaxle assembly |
Air bleed oil pump with motor assembly | Stop and start system | (202405,202409,_51,_083056,_0694819,RM100000002LU7O,202409,999999,_51,_083056,_0402418,RM100000002NSFT,)
|
·
Input transaxle compensation code into ECM ·
Perform reset memory ·
Deceleration sensor zero point calibration ·
CVT oil pressure calibration ·
Perform road test to allow ECM to learn |
·
Large shift shock ·
Deterioration of fuel efficiency |
for Initialization:
( 202405,202409,_52,_138817,_0596468,RM100000002JJ5Q,202409,999999,_52,_138817,_0596468,RM100000002NRBH,)
for Registration: ( 202304,999999,_52,_138817,_0596468,RM100000002AWR8,)
|
|
| CVT fluid | ATF thermal degradation estimate reset | The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly | for K121:
( 202405,202409,_52,_138176,_0584691,RM100000002JGMX,202409,999999,_52,_138176,_0584691,RM100000002NRHB,)
for K121F: ( 202405,202409,_52,_138817,_0596468,RM100000002JJ5Q,202409,999999,_52,_138817,_0596468,RM100000002NRBH,)
|
| Air bleed oil pump with motor assembly | Stop and start system | (202405,202409,_51,_083056,_0694819,RM100000002LU7O,202409,999999,_51,_083056,_0402418,RM100000002NSFT,)
|
|
| Front bumper assembly (Including removal and installation) | Front television camera view adjustment | Panoramic view monitor system | (202304,999999,_56,_083082,_0586733,RM1000000029R9F,)
|
| Suspension, tires, etc. | Parking assist ECU initialization | Panoramic view monitor system | (202304,999999,_56,_083082,_0586733,RM1000000029R9F,)
|
| Front wheel alignment adjustment | 1.
Perform "Reset Memory". 2.
Perform acceleration sensor zero point calibration and store system information memorization. |
·
VSC is disabled or malfunctions ·
DTCs are output ·
Slip indicator light illuminates ·
ABS warning light illuminates |
(202304,999999,_54,_083077,_0402316,RM100000002AG8P,)
|
- HINT:
-
When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.
- ·
Learning completes when vehicle is driven
Effect/Inoperative Function When Necessary Procedures are not Performed Necessary Procedures Link Stop and start system Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes). ( 202405,202409,_51,_083056,_0694819,RM100000002LU7I,202409,999999,_51,_083056,_0402418,RM100000002NSFO,)
Lane tracing assist system Drive the vehicle straight ahead at 15 km/h (10 mph) or more for 1 second or more. ( 201910,999999,_58,_083101,_0401880,RM100000001JE9I,)
Pre-collision system
·Learning completes when vehicle is operated normally
Effect/Inoperative Function When Necessary Procedures are not Performed Necessary Procedures Link *: w/ Power back door system
Power back door function* Fully close the back door by hand.
- HINT:
-
Initialization is not necessary if the above procedures are performed while the back door is closed.
( 202304,999999,_59,_083093,_0584672,RM1000000029PGT,)
Power door lock control system If the back door is locked and therefore cannot be opened, it is necessary to unlock the back door using the door control switch, electrical key transmitter sub-assembly switch. ( 202405,202409,_58,_083092,_0694211,RM100000002LR98,202409,999999,_58,_083092,_0403003,RM100000002NS90,)
Air conditioning system After the ignition switch is turned to ON, the servo motor standard position is recognized -
PROCEDURE
13711
1.REMOVE INTAKE VALVE
Using SST, compress each compression spring and remove the 8 valve spring retainer locks.
- SST
- 09202-70020 (09202-01010, 09202-01020)
09202-00021
- HINT:
-
Arrange the removed parts in such a way that they can be reinstalled to their original locations.
Remove the 8 valve spring retainers, 8 compression springs and 8 intake valves from the cylinder head sub-assembly.
- HINT:
-
Arrange the removed parts in such a way that they can be reinstalled to their original locations.
13715
2.REMOVE EXHAUST VALVE
Using SST, compress each compression spring and remove the 8 valve spring retainer locks.
- SST
- 09202-70020 (09202-01010, 09202-01020)
09202-00021
- HINT:
-
Arrange the removed parts in such a way that they can be reinstalled to their original locations.
Remove the 8 valve spring retainers, 8 compression springs and 8 exhaust valves from the cylinder head sub-assembly.
- HINT:
-
Arrange the removed parts in such a way that they can be reinstalled to their original locations.
3.REMOVE VALVE STEM OIL SEAL
Using needle-nose pliers, remove the 16 valve stem oil seals.
4.REMOVE VALVE SPRING SEAT
Using compressed air and a Magnet Hand, remove the 16 valve spring seats from the cylinder head sub-assembly by blowing air onto them.
11117E
5.REMOVE NO. 1 STRAIGHT SCREW PLUG
- NOTICE:
-
If coolant leaks from a No. 1 straight screw plug or a plug is corroded, replace it.
Using a 6 mm straight hexagon wrench, remove the 4 No. 1 straight screw plugs from the cylinder head sub-assembly.
6.REMOVE STUD BOLT
- NOTICE:
-
If a stud bolt is deformed or its threads are damaged, replace it.
Using an E8 "TORX" socket wrench, remove the 7 stud bolts.