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JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION [EV6A-EL, EV6AX-EL]

id0503n9101900

Troubleshooting item

Judder upon torque converter clutch (TCC) operation

Description

•  Vehicle jolts when TCC is engaged.

Possible cause

1.  Signal malfunction

―  APP sensor malfunction

―  CKP sensor malfunction

2.  Torque converter malfunction

System wiring diagram

•  Not applicable

Connector diagram

•  Not applicable

Troubleshooting item	Judder upon torque converter clutch (TCC) operation
Description	• Vehicle jolts when TCC is engaged.
Possible cause	1. Signal malfunction ― APP sensor malfunction ― CKP sensor malfunction 2. Torque converter malfunction
System wiring diagram	• Not applicable
Connector diagram	• Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action

1

VERIFY MALFUNCTION SYMPTOM

•  Is the malfunction symptom 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

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))].)

Yes

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

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 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	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))].)	Yes	Repair or replace any malfunctioning parts according to the inspection result.
2		No	Replace the automatic transaxle. (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [EV6A-EL (E)].) (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [EV6AX-EL (E)].)