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:

Glass Antenna Inspection
4SD 1. Disconnect the negative battery cable.. 2. Disconnect the antenna amplifier connector B.. 3. Disconnect the antenna feeder No.3 connector C. (with audio unit (with display)). 4. Inspect the glass antenna for damage visually. 5. Inspect for continuity between the glass antenna termin ...

Oil Seal Replacement [FS5 A EL]
1. Remove the aerodynamic under cover No. 2.. 2. Remove the oil seal. a. Drain the ATF.. b. Remove the drive shaft and/or joint shaft.. CAUTION: The oil seal is easily damaged by the sharp edges of the drive shaft splines. Do not let the splines contact the oil seal. c. Remo ...

Back Up Light Switch Removal/Installation [A26 M R]
1. Disconnect the negative battery cable. 2. Disconnect the back-up light switch connector. 3. Remove the aerodynamic under cover No.2.. 4. Remove the back-up light switch with the gasket. 5. Install a new gasket and the back-up light switch to the transaxle case. Tightening torque ...

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