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:

Joint Shaft Disassembly [Skyactiv G 2.0]
1. Disassemble in the order indicated in the table. 1 Snap ring 2 Joint shaft component . 3 Dust seal 4 Bearing 5 Dust cover 6 ...

Ignition Switch Inspection [Without Advanced Keyless Entry And Push Button Start System]
1. Disconnect the negative battery cable.. 2. Remove the column cover.. 3. Remove the ignition switch.. 4. Verify that the continuity between the ignition switch terminals is as indicated in the table. If not as indicated in the table, replace the ignition switch. ...

Transaxle Oil Inspection [G35 M R]
1. Park the vehicle on level ground. 2. Remove the aerodynamic under cover No.2.. 3. Remove the oil level plug and washer. 4. Verify that the oil is near the brim of the plug port. If the oil level is lower than the low level, add the specified amount and type of oil through the ...

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