Mazda 2006 MX-5 Service Highlights page 327

• Conversely, when the selector lever is operated in the forward (–) direction, the down switch in the selector lever
component turns on, and a down-shift command signal is input to the TCM.
— The TCM, triggered by the down-shift command signal, carries out shifting by outputting an operation signal
to the shift control solenoid if the vehicle speed is less than the set speed and the gear position is 2GR or
above.
• The up/down operation of the steering shift switch is the same as the manual operation of the selector lever.
• The TCM utilizes a specialized M range automatic shift diagram. Due to this, restriction of manual shift demand
and automatic control of downshifting is carried out, reducing load on the AT, preventing engine over-rev and
ensuring drive stability.
Condition
1GR→2GR up-shift command,
at low speed
2GR→3GR up-shift command,
at low speed
3GR→4GR up-shift command,
at low speed
4GR→5GR up-shift command,
at low speed
5GR→6GR up-shift command,
at low speed
5GR→6GR up-shift command,
low ECT
6GR→5GR down-shift
command, above set speed
5GR→4GR down-shift
command, above set speed
4GR→3GR down-shift
command, above set speed
3GR→2GR down-shift
command, above set speed
2GR→1GR down-shift
command, above set speed
In 6GR deceleration, speed
goes below coast-down set
speed (deceleration down-
shift)
In 5GR deceleration, speed
goes below coast-down set
speed (deceleration down-
shift)
In 4GR deceleration, speed
goes below coast-down set
speed (deceleration down-
shift)
In 3GR deceleration, speed
goes below coast-down set
speed (deceleration down-
shift)
In 2GR deceleration, speed
goes below coast-down set
speed (deceleration down-
shift)
Wide open throttle at 125—
190 km/h {78—118 mph} in
6GR
Wide open throttle at 78—124
km/h {49—77 mph} in 5GR
Wide open throttle at 50—77
km/h {32—48 mph} in 4GR
Wide open throttle at 15—49
km/h {10—31 mph} in 3GR
AUTOMATIC TRANSMISSION [SJ6A-EL]
Shift control
• To reduce load on the AT, upshifting is
inhibited until vehicle reaches speed possible
for upshifting
• To reduce load on the AT, upshifting to 6GR
is inhibited
• To prevent engine over-rev, downshifting is
inhibited until vehicle reaches speed possible
for downshifting
• To assure drive stability, automatically
downshifts from 6GR to 5GR
• To assure drive stability, automatically
downshifts from 5GR to 4GR
• To assure drive stability, automatically
downshifts from 4GR to 3GR
• To assure drive stability, automatically
downshifts from 3GR to 2GR
• To assure drive stability, automatically
downshifts from 2GR to 1GR
• To improve acceleration performance, 6GR
to 5GR kickdown occurs
• To improve acceleration performance, 5GR
to 4GR kickdown occurs
• To improve acceleration performance, 4GR
to 3GR kickdown occurs
• To improve acceleration performance, 3GR
to 2GR kickdown occurs
Note
—
• Gear position indicator light flash to
alert driver
—
—
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05–13