Mazda RX-8 Manual page 1071

If there is any malfunction, inspect the TCM and AT. (See SYMPTOM TROUBLESHOOTING
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ITEM TABLE .)
7. Drive the vehicle in 4GR, 3GR, and 2GR and verify that kickdown occurs for 4→3 and 3→2
downshifts, and that the shift points are as shown in the table below.
If there is any malfunction, inspect the TCM and AT. (See SYMPTOM TROUBLESHOOTING
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ITEM TABLE .)
Vehicle speed at shift point table
Range Mode Throttle condition Shift
Any condition
M Manual Kickdown
Closed
Wide open
P Position Test
1. Shift into the P position on a gentle slope. Release the brake, and verify that the vehicle does not roll.
If there is any malfunction, inspect the AT. (See SYMPTOM TROUBLESHOOTING ITEM
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TABLE .)
Incorrect Gear Ratio (Slippage) Test
NOTE:
If a gear ratio is incorrect but is not detected accurately, it will not be output as a DTC. In order to be
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output, after shifting into each gear position, the gear position must be held while the vehicle is driven at
a speed of 10 km/h {6.2 mph} or more for at least 7 s .
An incorrect gear ratio refers to a situation in which, due to clutch slippage in the AT, the input and
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output rotation of the AT differs from a certain value.
1. Perform road test preparation. (See Road Test Preparation .)
2. Perform the following steps.
a. Shift into the D range (1GR) and drive for 7 s or more .
b. Shift into the D range (2GR) and drive for 7 s or more .
c. Shift into the D range (3GR) and drive for 7 s or more .
d. Shift into the D range (4GR) and drive for 7 s or more .
3. Stop the vehicle.
4. Inspect for a DTC.
If any DTC is present, repair according to the inspection procedure for the applicable DTC.
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Vehicle speed
km/h {mph}
→ M
M 2834 {1821}
4 3
→ M
M 511 {46}
3 1
→ M
M 144154 {9095}
4 3
→ M
M 5260 {3337}
3 2
TCC ON (M ) 3141 {2025}
3
TCC ON (M ) 173183 {108113} 4,5004,750
4
Turbine speed
(rpm)
750850
200400
3,7503,950
1,9502,200
1,2001,500
(w) RX-8 Transmission (Manual & Auto)
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