Mazda 3 manuals

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

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


TROUBLESHOOTING ITEM

Torque converter clutch (TCC) non-operation

DESCRIPTION

  • TCC does not operate when vehicle reaches TCC operation range.

POSSIBLE CAUSE

  • Signal malfunction

    • APP sensor malfunction

    • Brake switch malfunction

    • CKP sensor malfunction

    • ECT sensor No.1 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 %

BOO

OFF/ON

  • Brake pedal released: Off

  • Brake pedal depressed: On

ECT

C, F

  • Displays the ECT

V

  • ECT is 20 C {68 F}: approx. 3.10 V

  • ECT is 40 C {104 F}: approx. 2.16 V

  • ECT is 60 C {140 F}: approx. 1.40 V

  • ECT is 80 C {176 F}: approx. 0.87 V

  • ECT is 100 C {212 F}: approx. 0.54 V

RPM

RPM

  • Displays the engine speed


Diagnostic procedure

STEP

INSPECTION

ACTION

1

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)

    • BOO (Brake switch)

    • ECT (ECT sensor No.1)

    • 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.

2

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 torque converter.

(See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [FW6A-EL].)


TCM Removal/Installation [FS5 A EL]
CAUTION: Do not apply a shock to or touch the projection on the TCM, otherwise it may not operate normally. 1. Perform the following procedures. a. Remove the battery cover.. b. D ...

Transmission/Transaxle SST
1: Mazda SST number 2: Global SST number Example 1:49 UN30 3009 2:303-009 Crankshaft damper remover Clutch [G35M-R] 1:49 E011 1A0 2: ...

Other materials:

Interior Light Bulb Removal/Installation
1. Disconnect the negative battery cable.. 2. Insert a tape-wrapped fastener remover into the service hole and pry with the screwdriver in the direction shown by the arrow to remove the lens. 3. Remove the interior light bulb. 4. Install in the reverse order of removal. ...

Basic Inspection [FS5 A EL]
STEP INSPECTION ACTION 1 Measure the battery voltage. Is the battery voltage 10.014.0 V? Yes Go to the next step. No Replace or recharge the battery. (See BATTERY RECHARG ...

Ignition Switch Removal/Installation [Without Advanced Keyless Entry And Push Button Start System]
1. Disconnect the negative battery cable.. 2. Remove the column cover.. 3. Detach the tab. 4. Pull the pin in the direction of the arrow shown in the figure and release the lock. 5. Disconnect the ignition switch connector and key interlock solenoid connector. 6. Remove the ...

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