Mazda 6. Manual — part 190
LOCATION INDEX
K–5
K
End Of Sie
1
2
Transaxle range (TR) switch
(See
K–14 TRANSAXLE RANGE (TR) SWITCH
K–15 TRANSAXLE RANGE (TR) SWITCH
)
K–18 TRANSAXLE RANGE (TR) SWITCH
)
3
Transaxle fluid temperature (TFT) sensor
(See
K–19 TRANSAXLE FLUID TEMPERATURE
)
K–21 TRANSAXLE FLUID TEMPERATURE
(TFT) SENSOR REMOVAL/INSTALLATION
4
K–23 OIL PRESSURE SWITCH REMOVAL/
5
Input/turbine speed sensor
(See
K–23 INPUT/TURBINE SPEED SENSOR
K–24 INPUT/TURBINE SPEED SENSOR
)
6
Vehicle speedometer sensor
(See
K–24 VEHICLE SPEEDOMETER SENSOR
)
K–26 VEHICLE SPEEDOMETER SENSOR
7
K–26 SOLENOID VALVE INSPECTION
)
8
)
9
Automatic transaxle
(See
K–29 AUTOMATIC TRANSAXLE REMOVAL/
)
10
Oil seal
(See
)
11
Control valve body
(See
K–34 CONTROL VALVE BODY REMOVAL
)
(See
)
12
Oil cooler
(See
(See
)
(See
13
Drive plate
(See
)
14
Interlock cable
(See
K–45 INTERLOCK CABLE INSPECTION
)
(See
K–46 INTERLOCK CABLE ADJUSTMENT
15
Selector lever
(See
K–46–2 SELECTOR LEVER INSPECTION
)
(See
K–46–3 SELECTOR LEVER REMOVAL/
)
(See
K–51 SELECTOR LEVER DISASSEMBLY/
16
Select cable
(See
K–46–3 SELECTOR CABLE ADJUSTMENT
17
Automatic transaxle fluid (ATF)
(See
K–12 AUTOMATIC TRANSAXLE FLUID (ATF)
)
K–13 AUTOMATIC TRANSAXLE FLUID (ATF)
18
Shift-lock
(See
)
19
Key interlock
(See
K–6
AUTOMATIC TRANSAXLE
MECHANICAL SYSTEM TEST
A6E561401030W01
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
E–3 ENGINE COOLANT LEVEL INSPECTION
3. Inspect the engine oil. (See
4. Inspect the ATF levels. (See
K–12 AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION
.)
5. Inspect the idle speed and ignition timing in P position. (See
.)(See
6. Bring up the engine and transaxle to normal operating temperature.
Line Pressure Test
1. Perform mechanical system test preparation. (See
K–6 Mechanical System Test Preparation
Warning
• Removing the square-head plug when the ATF is hot can be dangerous. Hot ATF can come out of
the opening and badly burn you. Before removing the square-head plug, allow the ATF to cool.
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
• If the accelerator pedal is pressed for longer than 5 seconds while the brake pedal is pressed, the
transaxle could be damaged. Therefore, perform Steps 11 and 12 within 5 seconds each.
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
• Removing the square-head plug when the ATF is hot can be dangerous. Hot ATF can come out of
the opening and badly burn you. Before removing the square-head plug, allow the ATF to cool.
AUTOMATIC TRANSAXLE
A6E5614W002
Position/Range
Line pressure (kPa {kgf/cm
2
, psi})
LF
D, S, L*
idle
330—470 {3.4—4.8, 48—68}
Stall
1,160—1,320 {11.8—12.5, 168—191}
R
idle
490—710 {5.0—7.2, 71—102}
Stall
1,600—1,820 {16.3—18.6, 232—264}
AUTOMATIC TRANSAXLE
K–7
K
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
K–6 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
• If the accelerator pedal is pressed for longer than 5 seconds while the brake pedal is pressed, the
transaxle could be damaged. Therefore, perform Steps 5 and 6 within 5 seconds of each other.
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
Line pressure
Possible cause
Low pressure in all ranges
Worn oil pump
Oil leaking from oil pump, control valve body, and/or transaxle case
Pressure regulator valve sticking
Pressure control solenoid malfunction
Pressure modulator valve sticking
Solenoid reducing valve sticking
Low pressure in D and S only
Oil leaking from hydraulic circuit of forward clutch
Low pressure in L and R only
Oil leaking from hydraulic circuit of low and reverse brake
Low pressure in R only
Oil leaking from hydraulic circuit of reverse clutch
High pressure in all ranges
Pressure control solenoid malfunction
Pressure regulator valve sticking
Pressure modulator valve sticking
Pressure reducing valve sticking
Position/
Range
Engine stall speed (rpm)
LF
D, S, L*
2,000—2,600
R
K–8
AUTOMATIC TRANSAXLE
Evaluation of stall test
Time Lag Test
1. Perform mechanical system test preparation. (See
K–6 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.
• N position → D range (HOLD mode)
• N position → R position
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
End Of Sie
Condition
Possible cause
Above specification
In all forward ranges and R
position
Insufficient
line pressure
Worm oil pump
Oil leaking from oil pump, control valve, and/
or transaxle case
Pressure regulator valve sticking
Pressure control solenoid malfunction
Pressure modulator valve sticking
In forward ranges
Forward clutch slippage
One-way clutch 1 slippage
In D ranges
One-way clutch 2 slippage
In S ranges
2-4 brake band slippage
In L range and R position
Low and reverse brake slippage
In R position
Low and reverse brake slippage
Reverse clutch slipping
Perform road test to determine whether problem is low and
reverse brake or reverse clutch
• Engine braking felt in L range: Reverse clutch
• Engine braking not felt in L range: Low and reverse brake
Below specification
Engine out of tune
One-way clutch slipping within torque converter
Condition
Possible Cause
N
→ D shift
More than specification
Insufficient line pressure
Forward clutch slipping
Oil leaking from forward clutch fluid circuit
Shift solenoid A not operating properly
Less than specification
Forward accumulator not operating properly
Shift solenoid A not operating properly
Excessive line pressure
N
→ D (HOLD) shift
More than specification
Insufficient line pressure
Forward clutch slipping
Shift solenoid A not operating properly
Less than specification
Forward accumulator not operating properly
Shift solenoid A not operating properly
Excessive line pressure
N
→ R shift
More than specification
Insufficient line pressure
Low and reverse brake slipping
Reverse clutch slipping
Shift solenoid B not operating properly
Less than specification
Servo apply accumulator not operating properly
Shift solenoid B not operating properly
Excessive line pressure
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