Mazda Protege 5. Manual - part 239

SYMPTOM TROUBLESHOOTING 

05–03–15

05–03

NO.12 TORQUE CONVERTER CLUTCH (TCC) NON-OPERATION

A3U050301030W16

Diagnostic procedure

Note

•

If malfunction remains, inspect related Service Bulletins and perform repair or diagnosis.

•

If vehicle is repaired, troubleshooting is completed.

•

If vehicle is not repaired or additional diagnostic information is not available, replace PCM.

End Of Sie

NO.13 NO KICKDOWN

A3U050301030W17

End Of Sie

12

Torque converter clutch (TCC) non-operation

DESCRIPTION

•

TCC does not operate when vehicle reaches TCC operation range.

POSSIBLE 

CAUSE

•

Basically, the TCC does not operate when the fail-safe is operating. Verify the DTC first. If the TCC 
operates when driving at high speeds only, the malfunction (improper adjustment) is in the O/D OFF 
switch circuit or TR switch circuit.

Caution

••••

If the TCC is stuck, inspect it. In addition, inspect the oil cooler for foreign particles which 
may have mixed in with the ATF.

a. TCC burned

•

TP sensor malfunction

•

TFT sensor malfunction

•

VSS malfunction

•

Input/turbine speed sensor malfunction

•

Sensor GND malfunction

•

Shift solenoid D malfunction (Sticking)

•

Shift solenoid E malfunction (Sticking)

•

Shift solenoid A malfunction (Sticking)

•

Shift solenoid B malfunction (Sticking)

•

Shift solenoid C malfunction (Sticking)

•

TCC hydraulic pressure system (Poor operation, sticking)

b. TP sensor malfunction (Not operating linearly)
c. Input/turbine speed sensor or VSS malfunction

STEP

INSPECTION

ACTION

1

•

Remove torque converter.

•

Inspect torque converter.
(See ATX Workshop Manual.)

•

Is torque converter okay?

Yes

Repeat basic inspection and repair or replace any defective 
parts according to inspection result.
(See 05–03–6 AUTOMATIC TRANSAXLE BASIC 
INSPECTION.)

No

Replace torque converter.

13

No kickdown

DESCRIPTION

•

Does not downshift when accelerator pedal is fully depressed within kickdown range.

POSSIBLE 

CAUSE

•

If the transaxle does not downshift though shifting is normal, the malfunction is in the TP sensor circuit 
(including the sensor GND, sensor harness and connector).

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SYMPTOM TROUBLESHOOTING 

05–03–16

NO.14 ENGINE FLARES UP OR SLIPS WHEN UPSHIFTING OR DOWNSHIFTING

A3U050301030W18

End Of Sie

NO.15 ENGINE FLARES UP OR SLIPS WHEN ACCELERATING VEHICLE

A3U050301030W19

End Of Sie

NO.16 JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION

A3U050301030W20

End Of Sie

14

Engine flares up or slips when upshifting or downshifting

DESCRIPTION

•

When accelerator pedal is depressed at start, engine speed increases normally but vehicle speed 
increase slowly.

•

When accelerator pedal is depressed while driving, engine speed increases but vehicle speed does 
not.

POSSIBLE 

CAUSE

•

There is clutch slip because the clutch is stuck or the line pressure is low.
a. Clutch stuck, slippage (forward clutch, 3–4 clutch, low and reverse brake, 2–4 brake band, one-way 

clutch)

•

Line pressure low

•

TP sensor malfunction or misadjustment

•

VSS malfunction

•

Input/turbine speed sensor malfunction

•

Sensor GND malfunction

•

Shift solenoid D malfunction

•

Shift solenoid E malfunction

•

Shift solenoid A malfunction

•

Shift solenoid B malfunction

•

Shift solenoid C malfunction

•

Pressure control solenoid malfunction

•

Body GND malfunction

•

Accelerator cable misadjustment

•

Control valve body malfunction

b. Poor operation of mechanical pressure

•

Selector lever position disparity

•

TR switch position disparity

15

Engine flares up or slips when accelerating vehicle

DESCRIPTION

•

Engine flares up when accelerator pedal is depressed for upshifting.

•

Engine flares up suddenly when accelerator pedal is depressed for downshifting.

POSSIBLE 

CAUSE

•

The malfunction is basically the same as for No.14 “Engine flares up or slips when upshifting or 
downshifting”.
— If conditions for No.14 worsen, the malfunction will develop to No.15.

16

Judder upon torque converter clutch (TCC) operation

DESCRIPTION

•

Vehicle jolts when TCC is engaged.

POSSIBLE 

CAUSE

•

Poor TCC engagement due to either slippage because the TCC is stuck or the line pressure is low.

Caution

••••

If the TCC is stuck, inspect it. In addition, inspect the oil cooler for foreign particles which 
may have mixed in with the ATF.

a. TCC piston slippage, burned

•

Line pressure low

•

TP sensor malfunction or misadjustment

•

VSS malfunction

•

Input/turbine speed sensor malfunction

•

Shift solenoid A malfunction

•

Control valve body malfunction

b. Torque converter malfunction

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SYMPTOM TROUBLESHOOTING 

05–03–17

05–03

NO.17 EXCESSIVE SHIFT SHOCK FROM N TO D OR N TO R POSITION/RANGE

A3U050301030W21

End Of Sie

NO.18 EXCESSIVE SHIFT SHOCK WHEN UPSHIFTING AND DOWNSHIFTING

A3U050301030W22

End Of Sie

NO.19 EXCESSIVE SHIFT SHOCK ON TORQUE CONVERTER CLUTCH (TCC)

A3U050301030W23

End Of Sie

NO.20 NOISE OCCURS AT IDLE WHEN VEHICLE IS STOPPED IN ALL POSITIONS/RANGES

A3U050301030W24

17

Excessive shift shock from N to D or N to R position/range

DESCRIPTION

•

Strong shock is felt when shifting from N to D or N to R position/range at idle.

POSSIBLE 

CAUSE

•

Shift shock may worsen when the fail-safe is operating. If no DTC is output, the shift shock may worsen 
due to poor operation of the control valve body or sticking of the clutch.
a. Clutch burned (N

→

D: Forward clutch, N

→

R: Reverse clutch or low and reverse brake)

•

Line pressure low

•

TP sensor malfunction

•

VSS malfunction

•

Input/turbine speed sensor malfunction

•

Accelerator cable misadjustment

•

Control valve body malfunction

b. Poor hydraulic operation (Malfunction in range change)

•

Servo apply accumulator malfunction

c. Idle speed high
d. Poor tightening torque of engine mount and/or exhaust mount

18

Excessive shift shock when upshifting and downshifting

DESCRIPTION

•

Excessive shift shock is felt when depressing accelerator pedal to accelerate at upshifting. During 
cruising, excessive shift shock is felt when depressing accelerator pedal at downshifting.

POSSIBLE 

CAUSE

•

Shift shock may worsen when the fail-safe is operating. The shift shock may also worsen if the TP 
sensor, input/turbine speed sensor, or VSS signal malfunctions.
a. Clutch slippage, burned (2–4 brake band, 3–4 clutch)

•

Line pressure low, high

•

TP sensor malfunction

•

VSS malfunction

•

Input/turbine speed sensor malfunction

•

TFT sensor malfunction

•

Shift solenoid D malfunction

•

Shift solenoid E malfunction

•

Shift solenoid A malfunction

•

Shift solenoid B malfunction

•

Shift solenoid C malfunction

•

Pressure control solenoid malfunction

•

Accelerator cable misadjustment

•

Control valve body malfunction

b. Poor hydraulic operation (Malfunction in range change)

•

Forward accumulator malfunction

•

Servo apply accumulator malfunction

19

Excessive shift shock on torque converter clutch (TCC)

DESCRIPTION

•

Strong shock is felt when TCC is engaged.

POSSIBLE 

CAUSE

•

The troubleshooting flow is the same as for No.16 “Judder (Intense vibration) upon torque converter 
clutch (TCC) operation”.

20

Noise occurs at idle when vehicle is stopped in all positions/ranges

DESCRIPTION

•

Transaxle is noisy in all positions and ranges when vehicle is idling.

POSSIBLE 

CAUSE

•

The malfunction is in the oil pump which causes a high-pitched noise to be emitted from the transaxle at 
idle.

Note

•

If a noise is emitted during shifting only, the malfunction is in shift solenoid D, E or duty solenoid 
valves.

•

If a noise is emitted during shifting at certain gears only or during deceleration only, it is gear 
noise.

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SYMPTOM TROUBLESHOOTING 

05–03–18

Diagnostic procedure

Note

•

If malfunction remains, inspect related Service Bulletins and perform repair or diagnosis.

•

If vehicle is repaired, troubleshooting is completed.

•

If vehicle is not repaired or additional diagnostic information is not available, replace PCM.

End Of Sie

NO.21 NOISE OCCURS AT IDLE WHEN VEHICLE IS STOPPED IN D, 2, 1 RANGES, OR IN R POSITION

A3U050301030W25

End Of Sie

NO.22 NO ENGINE BRAKING IN O/D OFF MODE

A3U050301030W26

Diagnostic procedure

Note

•

If malfunction remains, inspect related Service Bulletins and perform repair or diagnosis.

•

If vehicle is repaired, troubleshooting is completed.

•

If vehicle is not repaired or additional diagnostic information is not available, replace PCM.

End Of Sie

STEP

INSPECTION

ACTION

1

•

Inspect engine condition.

•

Is there engine concern (i.e. rough idle)?

Yes

Go to appropriate symptom troubleshooting.
(See 01–03A–7 SYMPTOM DIAGNOSTIC INDEX [ZM].)
(See 01–03B–7 SYMPTOM DIAGNOSTIC INDEX [FS].)

No

Repeat basic inspection and repair or replace any defective 
parts according to inspection result.
(See 05–03–6 AUTOMATIC TRANSAXLE BASIC 
INSPECTION.)

21

Noise occurs at idle when vehicle is stopped in D, 2, 1 ranges, or in R position

DESCRIPTION

•

Transaxle is noisy in driving ranges when vehicle is idling.

POSSIBLE 

CAUSE

•

Although the malfunction is basically the same as No.20 “Noise occurs at idle when vehicle is stopped 
in all positions/ranges”, other causes may be selector lever or TR switch not adjusted properly.

22

No engine braking in O/D OFF mode

DESCRIPTION

•

Engine speed drops to idle but vehicle coasts when accelerator pedal is released during cruising at 
medium to high speeds.

•

Engine speed drops to idle but vehicle coasts when accelerator pedal is released when in 1 range at 
low vehicle speed.

POSSIBLE 

CAUSE

a. Clutch slippage, or burned (low and reverse brake)

•

Line pressure low

•

VSS malfunction

•

Input/turbine speed sensor malfunction

•

TP sensor malfunction

•

Control valve body malfunction

b. O/D OFF switch on but not recognized by PCM (short, or open circuit, poor operation)

•

O/D OFF switch signal malfunction

STEP

INSPECTION

ACTION

1

•

Do following symptoms occur concurrently?

•

Engine flares up or slips during acceleration.

•

Engine flares up or slips when shifting.

Yes

Go to symptom troubleshooting No.14 “Engine flares up or 
slips when upshifting or downshifting” or No.15 “Engine 
flares up or slips when accelerating vehicle”.

No

Repeat basic inspection and repair or replace any defective 
parts according to inspection result.
(See 05–03–6 AUTOMATIC TRANSAXLE BASIC 
INSPECTION.)

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