Transaxle Range (Tr) Switch Operation [Aw6A-El, Aw6Ax-El] - Mazda CX-9 2007 Service Highlights

AUTOMATIC TRANSAXLE [AW6A-EL, AW6AX-EL]
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TRANSAXLE RANGE (TR) SWITCH OPERATION [AW6A-EL, AW6AX-EL]

• A non-contact type TR switch has been adopted in the TCM. The TR switch detects shift position by using the
Hall Effect, which outputs specified voltage according to the shift position (P, R, N, D). The magnet position in
the TR switch changes when moving the selector lever, enabling the Hall IC to convert magnetic field strength
into an electrical signal according to the shift position. Compared to the contact type switch, the non-contact
type switch does not have contact points and is very compact. This makes it possible to integrate it with the
TCM, improving reliability and durability.
— The Hall Effect:
• If magnetic flux is applied perpendicularly to electric current flowing into a conductor or semiconductor,
a potential difference, called Hall voltage, is generated perpendicularly in both the electric current and
magnetic flux. This phenomenon is called the "Hall Effect".
— Hall IC:
• A Hall IC is an electronic part that uses impetus caused by potential difference when a magnetic field is
generated.
SHAFT
HALL IC
N
MAGNET
SHAFT
HALL IC
N
05-17–26
CORE
S
N
S
CORE
P POSITION
CORE
S
N S
CORE
MAGNET
N POSITION
SHAFT
HALL IC
N
S
MAGNET
R POSITION
SHAFT
HALL IC
S
N
MAGNET
D RANGE
id051723100900
CORE
N
S
CORE
CORE
S
N
CORE
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