Mazda MX-6 1998, Workshop Manual

Page: 844 / 1282

AUTOMATIC TRANSAXLE [GF4A-EL]
Time Lag Test
1. Start the engine.
2. After normal operating temperature is reached,
shift from N position to D range.
3. Use a stopwatch to measure the time it takes from
shifting until shock is felt. Make three
measurements for each test and average the
results.
4. Perform the test for the following shifts in the
same manner.
•
N position R position
Time lag
N position -> D range ... below approx. 0.9
second
N position R position ... below approx. 1.1
second
Evaluation of time lag test
C o n d itio n P o ssib le Cause
More than specification
N -» D shift
Insufficient line pressure
Forward clutch slipping
One-way clutch 1 slipping
One-way clutch 2 slipping
N -» R shift
Insufficient line pressure
Low and reverse brake slipping
Reverse clutch slipping
ROAD TEST [GF4A-EL]
W 6 U 5 1 7 W 1 5
Road Test Preparation
1. Before testing, check and correct the engine coolant, engine oil, and ATF levels as necessary.
2. Warm the engine thoroughly to raise the ATF temperature to operating level (60— 70 ”C {140— 158 °F}).
3. Check the idle speed and ignition timing in P position. (Refer to 01-1 OB ENGINE TUNE-UP [KL].)
Typical Shift Diagram
D RANGE (O/D OFF SWITCH OFF, NORMAL MODE)
TCC OPERATION AVAILABLE
{0) {12} {25} {37} {50} {63} {75} {87} {99}
VEHICLE SPEED km/h{mph}
W6U517WCU
0 5 -1 7 B -4