AUTOMATIC TRANSMISSION SHIFT MECHANISM
05–14–4
Down Switch
Outline
• The down switch detects a down-shift operation in
the M range and sends a down-shift request
signal to the TCM.
Operation
• The down switch is an ON/OFF type switch that
turns on when the selector lever is in the M range
(–) side position.
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STEERING SHIFT SWITCH FUNCTION
E5U051446102N03
• When an up-shift or down-shift operation is detected in M range, an up-shift or down-shift request signal is sent
to the TCM.
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STEERING SHIFT SWITCH CONSTRUCTION/OPERATION
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Construction
• There is one pair of up and down switches on both the left and right sides of the steering wheel.
• The down switch is built into the audio control and cruise control switches.
Operation
Sending of up/down-shift request signals
• The TCM detects an up/down-shift request signal according to the voltage applied to terminal 2AF.
• When the up or down switch is operated, the resistor built into the down switch changes the voltage applied to
TCM terminal 2AF.
• The TCM controls upshifting or downshifting based on this change in voltage.
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DOWN SWITCH
CHU0514S004
DOWN SWITCH
UP SWITCH UP SWITCH
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TCM
2AF
5F 2F
5C 2C
CLOCK
SPRING
STEERING SHIFT SWITCH
DOWN SWITCH
UP SWITCH (LH)
UP SWITCH (RH)
LH RH
B
B
C
C
A
A
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