Mazda Mazda6 - Road Test

AUTOMATIC TRANSAXLE
K2–75
K2
Time Lag Test
1. Perform mechanical system test preparation. (See K2–72 Mechanical System Test Preparation.)
2. Start the engine.
3. Warm up the engine until the ATF temperature reaches 60—70°C {140—158°F}. Shift the selector lever from N
position to D range.
4. Use a stopwatch to measure the time it takes from shifting until engagement is felt. Take three measurements
for each test and average the results using the following formula.
Formula
Average time lag = (Time 1 + Time 2 + Time 3) / 3
5. Perform the test for the following shifts in the same manner.
• N position → P position
Time lag
N → D range ... approx. 0.5—1.0 second
N → R position ... approx. 0.6— 1.0 second
Evaluation of time lag test
End Of Sie
ROAD TEST
A6E571401030210
Road Test Preparation
1. Inspect the engine coolant. (See Section E.)
2. Inspect the engine oil. (See D–8 ENGINE OIL INSPECTION.)
3. Inspect the ATF levels. (See K2–78 AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION.)
4. Inspect the idle speed and ignition timing in P position. (See F1–22 IDLE SPEED INSPECTION (4WD).)
5. Bring up the engine and transaxle to normal operating temperature.
Shift Diagram
D range (normal mode)
Condition Possible Cause
Above specification
N → D shift
Insufficient line pressure in all forward ranges
Low clutch slippage
Low one-way clutch slippage
Reduction one-way clutch slippage
N → R shift
Insufficient line pressure in R position
Low and reverse brake slippage
Reverse clutch slippage
Reduction brake slippage
0/8
1/8
2/8
3/8
4/8
5/8
6/8
7/8
8/8
TCC OPERATION AVAILABLE
VEHICLE SPEED km/h {mph}
THROTTLE OPENING
SHIFT UP
4GR
TCC
OFF
SHIFT DOWN
0
{0}
20
{12}
40
{25}
60
{37}
80
{50}
100
{63}
120
{75}
140
{87}
160
{99}
180
{112}
220
{137}
200
{124}
1
12 23
2
223234
4534
45
5GR TCC ON
4GR TCC ON
5GR TCC OFF
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