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EXCESSIVE SHIFT SHOCK FROM N TO D OR N TO R POSITION [ET6A-EL, ET6AX-EL (E)]

id0503n61020n8

Troubleshooting item

Excessive shift shock from N to D or N to R position

Description

•  Strong shock is felt when shifting from N to D or N to R position at idle.

Possible cause

1.  Insufficient TCM learning (Insufficient learning in N to D position or N to R position)

2.  Not within idle speed specification

3.  Signal malfunction

―  APP sensor malfunction

―  CKP sensor malfunctions

4.  Poor installation or worn of engine mount, suspension

5.  Engine control system malfunction

System wiring diagram

•  Not applicable

Connector diagram

•  Not applicable

Troubleshooting item	Excessive shift shock from N to D or N to R position
Description	• Strong shock is felt when shifting from N to D or N to R position at idle.
Possible cause	1. Insufficient TCM learning (Insufficient learning in N to D position or N to R position) 2. Not within idle speed specification 3. Signal malfunction ― APP sensor malfunction ― CKP sensor malfunctions 4. Poor installation or worn of engine mount, suspension 5. Engine control system malfunction
System wiring diagram	• Not applicable
Connector diagram	• Not applicable

Diagnostic Procedure

Note

• If a DTC is stored in the PCM, the malfunction may be resolved by repairing the malfunctioning location.

Step

Inspection

Results

Action

1

VERIFY MALFUNCTION SYMPTOM

•  Is the malfunction symptom (shift shock/shifting time) at the same level compared to a vehicle of the same model (ET6A-EL, ET6AX-EL vehicles)?

Yes

Symptom troubleshooting is completed.

No

Go to the next step.

2

PERFORM ON-BOARD DIAGNOSTIC TO VERIFY HYDRAULIC PRESSURE SWITCH OPERATION PRESSURE

•  Is the operation pressure normal?

Yes

Go to the next step.

No

Replace the control valve body.

(See CONTROL VALVE BODY REMOVAL/INSTALLATION [ET6A-EL, ET6AX-EL (E)].)

3

PERFORM INITIAL LEARNING, N TO D POSITION LEARNING, AND N TO R POSITION LEARNING

•  Perform the Initial Learning.
(See INITIAL LEARNING [ET6A-EL, ET6AX-EL (E)].)

•  Perform N to D position learning using the following procedure:

(1) The ATF temperature is 30 °C {86 °F} or more.

(2) Shift the selector lever from P position to N position.

(3) Shift the selector lever from N position to D position and wait for 5 s or more while holding the lever in the D position.

(4) Shift the selector lever from D position to N position and wait for 5 s or more while holding the lever in the N position.

(5) Perform the procedures (3) to (4) above ten times.

•  Perform N to R position learning using the following procedure:

(1) The ATF temperature is 60 °C {140 °F} or more.

(2) Shift the selector lever from P position to N position.

(3) Shift the selector lever from N position to R position and wait for 5 s or more while holding the lever in the R position.

(4) Shift the selector lever from R position to N position and wait for 5 s or more while holding the lever in the N position.

(5) Perform the procedures (3) to (4) above ten times.

•  Does the symptom disappear?

Yes

Symptom troubleshooting is completed.

No

Go to the next step.

4

INSPECT ENGINE CONTROL SYSTEM FOR MALFUNCTION

•  Perform the symptom troubleshooting “FAST IDLE/RUNS ON”.
(See FAST IDLE/RUNS ON [SKYACTIV-G (E)].)

(See FAST IDLE/RUNS ON [SKYACTIV-X].)

(See FAST IDLE/RUNS ON [SKYACTIV-D].)

•  Is there any malfunction?

Yes

Repair or replace any malfunctioning parts according to the inspection result.

No

Go to the next step.

5

INSPECT SIGNAL PARTS FOR MALFUNCTION

•  Inspect the value at the following PCM PIDs using the M-MDS.
(See PID/DATA MONITOR INSPECTION.)

―  APP1 (APP sensor No.1)

―  APP2 (APP sensor No.2)

―  ENG_RPM (CKP sensor)

•  Is there any malfunction?
(See PID/DATA MONITOR TABLE [PCM (SKYACTIV-G (E))].)

(See PID/DATA MONITOR TABLE [PCM (SKYACTIV-X)].)

(See PID/DATA MONITOR TABLE [PCM (SKYACTIV-D)].)

Yes

Repair or replace any malfunctioning parts according to the inspection result.

No

Go to the next step.

6

INSPECT ENGINE MOUNT/SUSPENSION FOR POOR TIGHTENING

•  Is there any malfunction?

Yes

Repair or replace any malfunctioning parts according to the inspection result.

(See ENGINE REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (E))].)

(See ENGINE REMOVAL/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].)

(See ENGINE REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)

(See ENGINE REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

No

Symptom troubleshooting is completed.

Step	Inspection	Results	Action
1	VERIFY MALFUNCTION SYMPTOM • Is the malfunction symptom (shift shock/shifting time) at the same level compared to a vehicle of the same model (ET6A-EL, ET6AX-EL vehicles)?	Yes	Symptom troubleshooting is completed.
1		No	Go to the next step.
2	PERFORM ON-BOARD DIAGNOSTIC TO VERIFY HYDRAULIC PRESSURE SWITCH OPERATION PRESSURE • Is the operation pressure normal?	Yes	Go to the next step.
2		No	Replace the control valve body. (See CONTROL VALVE BODY REMOVAL/INSTALLATION [ET6A-EL, ET6AX-EL (E)].)
3	PERFORM INITIAL LEARNING, N TO D POSITION LEARNING, AND N TO R POSITION LEARNING • Perform the Initial Learning. (See INITIAL LEARNING [ET6A-EL, ET6AX-EL (E)].) • Perform N to D position learning using the following procedure: (1) The ATF temperature is 30 °C {86 °F} or more. (2) Shift the selector lever from P position to N position. (3) Shift the selector lever from N position to D position and wait for 5 s or more while holding the lever in the D position. (4) Shift the selector lever from D position to N position and wait for 5 s or more while holding the lever in the N position. (5) Perform the procedures (3) to (4) above ten times. • Perform N to R position learning using the following procedure: (1) The ATF temperature is 60 °C {140 °F} or more. (2) Shift the selector lever from P position to N position. (3) Shift the selector lever from N position to R position and wait for 5 s or more while holding the lever in the R position. (4) Shift the selector lever from R position to N position and wait for 5 s or more while holding the lever in the N position. (5) Perform the procedures (3) to (4) above ten times. • Does the symptom disappear?	Yes	Symptom troubleshooting is completed.
3		No	Go to the next step.
4	INSPECT ENGINE CONTROL SYSTEM FOR MALFUNCTION • Perform the symptom troubleshooting “FAST IDLE/RUNS ON”. (See FAST IDLE/RUNS ON [SKYACTIV-G (E)].) (See FAST IDLE/RUNS ON [SKYACTIV-X].) (See FAST IDLE/RUNS ON [SKYACTIV-D].) • Is there any malfunction?	Yes	Repair or replace any malfunctioning parts according to the inspection result.
4		No	Go to the next step.
5	INSPECT SIGNAL PARTS FOR MALFUNCTION • Inspect the value at the following PCM PIDs using the M-MDS. (See PID/DATA MONITOR INSPECTION.) ― APP1 (APP sensor No.1) ― APP2 (APP sensor No.2) ― ENG_RPM (CKP sensor) • Is there any malfunction? (See PID/DATA MONITOR TABLE [PCM (SKYACTIV-G (E))].) (See PID/DATA MONITOR TABLE [PCM (SKYACTIV-X)].) (See PID/DATA MONITOR TABLE [PCM (SKYACTIV-D)].)	Yes	Repair or replace any malfunctioning parts according to the inspection result.
5		No	Go to the next step.
6	INSPECT ENGINE MOUNT/SUSPENSION FOR POOR TIGHTENING • Is there any malfunction?	Yes	Repair or replace any malfunctioning parts according to the inspection result. (See ENGINE REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (E))].) (See ENGINE REMOVAL/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].) (See ENGINE REMOVAL/INSTALLATION [SKYACTIV-X 2.0].) (See ENGINE REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
6		No	Symptom troubleshooting is completed.