Garage Shift Control Outline [Aw6A-El, Aw6Ax-El]; Reverse Control Outline [Aw6A-El, Aw6Ax-El]; Self-Diagnosis Function Outline [Aw6A-El, Aw6Ax-El]; Fail-Safe Outline [Aw6A-El, Aw6Ax-El] - Mazda CX-9 2007 Service Highlights

AUTOMATIC TRANSAXLE [AW6A-EL, AW6AX-EL]

GARAGE SHIFT CONTROL OUTLINE [AW6A-EL, AW6AX-EL]

• When the selector lever is moved from N to D or from N to R, after the engine is started, shift solenoid C and
shift solenoid E are used for the oil pressure required by C1 clutch or C3 clutch and appropriately regulated oil
pressure is supplied to the clutch, engaging smoothly without shock.
Note
• When the engine is cold, the first piston stroke resistance becomes large, creating a time lag for shift
operation. In order to reduce the time lag, control is not performed.
• By controlling the oil pressure according to the piston stroke, smooth engagement without shock becomes
possible.
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REVERSE CONTROL OUTLINE [AW6A-EL, AW6AX-EL]

• If the selector lever is moved from N to R while the vehicle is traveling and the transaxle shifts into reverse, the
wheels may be locked, which is extremely dangerous. In order to avoid this, TCM inhibits the transaxle from
shifting into reverse while traveling.
Note
• Even when the selector lever is moved from N to R, the transaxle does not shift into reverse if the vehicle
speed is 10 km/h {6 mph} or more.
• When this control is activated, the C3 clutch is released without operating the shift solenoid E so that the
transaxle does not shift into reverse.
• Reverse control takes precedence over N-R shift control.
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SELF-DIAGNOSIS FUNCTION OUTLINE [AW6A-EL, AW6AX-EL]

• The TCM monitors the communication status of each sensor, electronic component and PCM including the
PCM. If any malfunction should occur, the TCM functions to warn the driver and stores the malfunction as a
diagnosis code.
— If any malfunction should occur in the automatic transaxle, the TCM will cause warning light to light up in
order to inform the driver of the malfunction.
— The TCM stores the malfunction as a diagnosis code.
— The diagnosis code and TCM data can be inspected by connecting the Mazda Modular Diagnostic System
(M-MDS).
• Deleting the diagnosis codes and initializing the learned values can be performed only with the Mazda Modular
Diagnostic System (M-MDS).
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FAIL-SAFE OUTLINE [AW6A-EL, AW6AX-EL]

• With the fail-safe function, if any malfunction should occur in the automatic transaxle system, the TCM will
output a control signal, and control will be performed to make travelling a minimum distance possible. If shift
solenoid malfunction, the TCM will cancel the output of control signals to the solenoid. If this happens,
automatic transaxle gear shifting will be controlled by oil pressure circuits only and the gears will shift as shown
in the chart below.
Shift position
R
D, M
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N POSITION LEARNING FUNCTION [AW6A-EL, AW6AX-EL]
• The AW6A (X) -EL automatic transaxle has the "neutral position learning" function. For the neutral position
learning procedure, refer to the CX-7 Workshop Manual.
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Gear position
Reverse
3rd gear (5th gear in case of shift solenoid C malfunction)
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