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SLOW ENGAGING AFTER OPERATING SELECTOR LEVER FROM N TO D POSITION [EV6A-EL, EV6AX-EL]

id0503n9104500

Troubleshooting item

Slow engaging after operating selector lever from N to D position

Description

•  Slow engagement when depressing the accelerator pedal just after operating the selector lever from N to D position with the ATF temperature at 60 °C {140 °F} or more.

•  Malfunction symptom only occurs once when accelerating from a standstill.

•  Engagement after operating the selector lever from N to R position is normal.

•  Engagement when shifting gears while driving is normal.

•  DTCs are not stored.

Possible cause

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

2.  Low clutch piston malfunction

3.  Low clutch hydraulic system sealing malfunction

System wiring diagram

•  Not applicable

Connector diagram

•  Not applicable

Troubleshooting item	Slow engaging after operating selector lever from N to D position
Description	• Slow engagement when depressing the accelerator pedal just after operating the selector lever from N to D position with the ATF temperature at 60 °C {140 °F} or more. • Malfunction symptom only occurs once when accelerating from a standstill. • Engagement after operating the selector lever from N to R position is normal. • Engagement when shifting gears while driving is normal. • DTCs are not stored.
Possible cause	1. Insufficient TCM learning (Insufficient learning in N to D position) 2. Low clutch piston malfunction 3. Low clutch hydraulic system sealing malfunction
System wiring diagram	• Not applicable
Connector diagram	• Not applicable

Diagnostic Procedure

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 (EV6A-EL, EV6AX-EL vehicles)?

Yes

Symptom troubleshooting is completed.

No

Go to the next step.

2

VERIFY DTCs

•  Are any DTCs detected?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [TCM (EV6A-EL, EV6AX-EL) (E)].)

No

Go to the next step.

3

PERFORM INITIAL LEARNING AND N TO D RANGE LEARNING

•  Perform the initial learning.
(See INITIAL LEARNING [EV6A-EL, EV6AX-EL].)

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

(1) Set the ATF temperature to 30 °C {86 °F} or more.

(2) Shift the selector lever to N position.

(3) Shift the selector lever to D position and wait for 5 s or more.

(4) Shift the selector lever to N position and wait for 5 s or more.

(5) Perform steps (3) to (4) 10 times.

•  Has the malfunction symptom been eliminated?

Yes

Complete the symptom troubleshooting.

No

Replace the automatic transaxle.

(See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [EV6A-EL (E)].)

(See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [EV6AX-EL (E)].)

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 (EV6A-EL, EV6AX-EL vehicles)?	Yes	Symptom troubleshooting is completed.
1		No	Go to the next step.
2	VERIFY DTCs • Are any DTCs detected?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [TCM (EV6A-EL, EV6AX-EL) (E)].)
2	VERIFY DTCs • Are any DTCs detected?	No	Go to the next step.
3	PERFORM INITIAL LEARNING AND N TO D RANGE LEARNING • Perform the initial learning. (See INITIAL LEARNING [EV6A-EL, EV6AX-EL].) • Perform the N to D position learning using the following procedure: (1) Set the ATF temperature to 30 °C {86 °F} or more. (2) Shift the selector lever to N position. (3) Shift the selector lever to D position and wait for 5 s or more. (4) Shift the selector lever to N position and wait for 5 s or more. (5) Perform steps (3) to (4) 10 times. • Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting.
3		No	Replace the automatic transaxle. (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [EV6A-EL (E)].) (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [EV6AX-EL (E)].)