Mazda CX-7 2007 Workshop Manual page 1014

AUTOMATIC TRANSAXLE [AW6A-EL, AW6AX-EL]
Engine stall speed
Position/range
D, M
R
Evaluation of stall test
Condition
Above specification
Below specification
Time Lag Test
1. Perform mechanical system test preparation. (See05-17-3 Mechanical System Test Preparation.)
2. Start the engine.
3. Warm up the engine until the ATF temperature reaches 60— 70°C {140— 158°F}.
4. Shift the selector lever from the N position to D range.
5. Use a stopwatch to measure the time it takes from shifting until shock is felt. Take three measurements for each
test and average from the results using the following formula.
Formula
Average time lag = (Time 1 + Time 2 + Time 3) / 3
6. Perform the test for the following shifts in the same manner as in Step 5.
• N position → R position
Average time lag
N position → D range: 1.5 s or less
N position → R position: 1.5 s or less
Evaluation of time lag test
Condition
N→D shift
N→R shift
End Of Sie
05-17–6
In D, M ranges
In R position
In all positions/ranges
More than specification
More than specification
Engine stall speed (rpm)
2,800
Possible cause
• Low line pressure (Line pressure control solenoid
malfunction, primary regulator valve malfunction)
• Control valve body component malfunction (shift solenoid
C hydraulic pressure system)
• C1 clutch slipping
• One-way clutch malfunction
• Low line pressure (Line pressure control solenoid
malfunction, primary regulator valve malfunction)
• Control valve body component malfunction (shift solenoid
E hydraulic pressure system)
• C3 clutch malfunction (slipping)
• B2 brake malfunction (slipping)
• Low line pressure (Line pressure control solenoid
malfunction, primary regulator valve malfunction)
• Oil pump malfunction
• Oil strainer clogging
• Engine lack of power
• Torque converter one-way clutch slipping
Possible cause
• Control valve body malfunction (shift solenoid C hydraulic
pressure system)
• C1 clutch slipping
• One-way clutch malfunction
• Oil pump malfunction
• Oil strainer clogging
• Control valve body malfunction (shift solenoid E hydraulic
pressure system)
• C3 clutch slipping
• B2 brake slipping
• Oil pump malfunction
• Oil strainer clogging