Mazda 3 Service Manual: Judder Upon Torque Converter Clutch (TCC) Operation [Fw6 A EL]

Mazda 3 Service Manual / Drivetrain / Transmission/Transaxle / Automatic / Judder Upon Torque Converter Clutch (TCC) Operation [Fw6 A EL]


TROUBLESHOOTING ITEM	Judder upon torque converter clutch (TCC) operation
DESCRIPTION	Vehicle jolts when TCC is engaged.
POSSIBLE CAUSE	Signal malfunction APP sensor malfunction CKP sensor malfunction Poor GND Torque converter malfunction

TROUBLESHOOTING ITEM

Judder upon torque converter clutch (TCC) operation

DESCRIPTION

Vehicle jolts when TCC is engaged.

POSSIBLE CAUSE

Signal malfunction

APP sensor malfunction
CKP sensor malfunction

Poor GND
Torque converter malfunction

CAUTION:

Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.

Related PIDs


Monitor item (Definition)	Unit/Condition	Condition/Specification (Reference)
APP	%	Accelerator pedal released: approx. 0 % Accelerator pedal depressed: approx. 100 %
RPM	RPM	Displays the engine speed

Diagnostic procedure


STEP	INSPECTION		ACTION
1	VERIFY MALFUNCTION SYMPTOM Is the malfunction symptom at the same level compared to a vehicle of the same model?	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 ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0].) APP (APP sensor) RPM (CKP sensor) Is there any malfunction?	Yes	Repair or replace any malfunctioning parts according to the inspection result.
2		No	Go to the next step.
3	VERIFY IF MALFUNCTION CAUSE IS TCM GND OR TORQUE CONVERTER Switch the ignition to off. Disconnect the TCM connector. Visually inspect for pin deformity, open circuit, or wiring harness non-insulation between TCM terminal 1B and body GND. Is there any malfunction?	Yes	Repair or replace any malfunctioning parts according to the inspection result.
3		No	Replace the automatic transaxle. (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [FW6A-EL].)

Joint Shaft Assembly [Mzr 2.5 (ATX)]

1. Assemble in the order indicated in the table. 1 Bracket 2 Bearing . 3 Dust seal (RH) . 4 ...

Key Interlock System Inspection

Key Interlock System Inspection 1. Switch the ignition to ON. 2. Perform the following procedures to inspect the key interlock system. If there is any malfunction, inspect the key interlock ...

Other materials:

Front ABS Wheel Speed Sensor Inspection
Sensor Output Value Inspection CAUTION: Resistance inspection using other testers may cause damage to the ABS wheel-speed sensor internal circuit. Be sure to use the M-MDS to inspect the ABS wheel-speed sensor. 1. Switch the ignition to off. 2. Connect the M-MDS to the DLC-2. ...

How to Arm the System
Close the windows and the moonroof * securely. Switch the ignition OFF. Make sure the hood, the doors, and the liftgate/trunk lid are closed. Press the lock button on the transmitter or lock the driver's door from the outside with the auxiliary key. The hazard warning lights will ...

Rear Stabilizer Control Link Inspection
1. Remove the rear stabilizer control link from the vehicle.. 2. Inspect for bending or damage. If there is any malfunction, replace the rear stabilizer control link. 3. Rotate the ball joint stud 10 times and shake it side to side 10 times. 4. Measure the ball joint rotational torque usin ...