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:

Oil Seal (Differential) Replacement [Fw6 A EL]
1. Remove the aerodynamic under cover No.2 and the splash shield as a single unit.. 2. Remove the oil seal. a. Drain the ATF.. b. Disconnect the drive shaft (LH) from the transaxle.. c. Disconnect the drive shaft (RH) from the joint shaft.. d. Remove the joint shaft.. CAUTION: ...

Automatic Transaxle Fluid (ATF) Inspection [Fw6 A EL]
CAUTION: If the ATF level is not within the specification or ATF is not adhering to the dipstick after warming up the engine, do not drive the vehicle. Otherwise, the transaxle could be damaged. ATF Level Inspection 1. Remove aerodynamic undercover No.2.. 2. Remove the dipstic ...

Trunk Lid Opener Cable Removal/Installation
1. Disconnect the negative battery cable.. 2. Remove the following parts: a. Front seat (LH)(See FRONT SEAT REMOVAL/INSTALLATION.) b. Front scuff plate (LH). c. Rear scuff plate. d. B-pillar lower trim. e. Rear seat cushion. f. Rear seat back. g. Tire house trim (LH). h. Trunk end ...

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