Mazda 3 manuals

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


CAUTION:

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.

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.

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.

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:

Rear Window Glass Installation
WARNING: Using a utility knife with bare hands can cause injury. Always wear gloves when using a utility knife. CAUTION: Proper installation of the glass may be difficult if sealant is cracked or the glass is pushed out by air pressure when a door is opened/closed with al ...

Sunlight/Temperature Sensor
The climate control system measures inside and outside temperatures, and sunlight. It then sets temperatures inside the passenger compartment accordingly. CAUTION Do not obstruct either sensor, otherwise the climate control system will not operate properly. ...

Outer Mirror Glass Removal
1. Disconnect the negative battery cable. 2. Press area B of the mirror glass so that area A moves outward. 3. Detach pin B while lifting up the inside of the mirror glass holder. 4. Pull the mirror glass holder and remove pins A and C. 5. Disconnect the mirror heater connectors. (Ve ...

© 2016-2025 Copyright www.mazda3tech.com