Mazda 6 manuals

Mazda 6 Service Manual: Mechanical system test

Mechanical System Test Preparation

1. Engage the parking brake and use wheel chocks at the front and rear of the wheels.

2. Inspect the engine coolant. (See ENGINE COOLANT LEVEL INSPECTION.)

3. Inspect the engine oil. (See ENGINE OIL INSPECTION.)

4. Inspect the ATF levels. (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION.)

5. Inspect the idle speed and ignition timing in P position. (See IDLE SPEED INSPECTION.)(See IGNITION TIMING INSPECTION.)

6. Bring up the engine and transaxle to normal operating temperature.

Line Pressure Test

1. Perform mechanical system test preparation. (See Mechanical System Test Preparation.)

Warning

2. Connect the SSTs

(49 H019 002 and, 49 0378 400C) to the line pressure inspection port, then replace the gauge of the SST

(49 0378 400C) with the SST

(49 B019 901B).


3. Start the engine, then warm up the automatic transaxle.

4. Shift the selector lever to D range.

5. Read the line pressure at idle engine speed for the D range.

6. Read the line pressure at idle engine speed for the D (HOLD), S, S (HOLD), L, L (HOLD) ranges and R positions in the same manner as in Steps 4-5.

7. Stop the engine, then replace the SST

(49 B019 901B) with the gauge of the SST

(49 0378 400C).

8. Start the engine.

9. Firmly depress the brake pedal with the left foot.

10. Shift the selector lever to D range position.

Caution

11. Gradually depress the accelerator pedal with the right foot.

12. When the engine speed no longer increases, quickly read the line pressure and release the accelerator pedal.

13. Shift the selector lever to N position and let the engine idle for 1 minute or more to cool the ATF.

14. Read the line pressure at the engine stall speed for the D, D (HOLD), S, S (HOLD), L, L(HOLD) ranges and R position in the same manner as in Steps 9-13.

Specified line pressure


* : Includes each HOLD mode

Warning

15. Remove the SSTs

.

16. Install a new square head plug in the inspection port.

Tightening torque 5.0-9.8 N·m {50-100 kgf·cm, 44-86 in·lbf}

Evaluation of line pressure test


Stall Test

1. Perform mechanical system test preparation. (See Mechanical System Test Preparation.)

2. Start the engine.

3. Firmly depress the brake pedal with the left foot.

4. Shift the selector lever to D range.

Caution

5. Gently depress the accelerator pedal with the right foot.

6. When the engine speed no longer increases, quickly read the speed and release the accelerator pedal. When the engine speed no longer increases, quickly read the speed and release the accelerator pedal.

7. Shift the selector lever to N position and let the engine idle for 1 minute or more to cool the ATF.

8. Perform a stall test of D (HOLD), S, S (HOLD), L, L (HOLD) and R range positions in the same manner as in Steps 3-7.

9. Turn the ignition switch off.

Engine stall speed


* : Includes each HOLD mode

Evaluation of stall test


Time Lag Test

1. Perform mechanical system test preparation. (See Mechanical System Test Preparation.)

2. Use a stopwatch to measure the time it takes from shifting until shock is felt when shifting the selector lever from N position to D range (non-HOLD mode). Take three measurements for each test and take the average from the results using the following formula.

Formula:
Average time lag = (Time 1 + Time 2 + Time 3) / 3

3. Perform the test for the following shifts in the same manner Step 2.

Time lag
N position → D range ... 0.4-0.7 s N position → R position ... 0.4-0.7 s

Evaluation of time lag test


Automatic transaxle
...

Road test
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