Mazda 6. Manual — part 35
ELECTRONIC CONTROL SYSTEM
K–11
K
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BLOCK DIAGRAM
A6E561501030T03
.
A6E5614T006
1
PCM
2
Engine control system
3
Transaxle control system
4
On-board diagnostic system
5
Input signals
6
Throttle position sensor
7
Crankshaft position sensor
8
Mass air flow sensor
9
Brake switch
10
Engine coolant templature sensor
11
Engine control output signals
12
Data link connector
13
HOLD switch
14
Input/turbine speed sensor
15
Vehicle speed sensor
16
Transaxle fluid temperature sensor
17
Transaxle range switch
18
Oil pressure switch
19
Output signals
20
Shift solenoid A
21
Shift solenoid B
22
Shift solenoid C
23
Shift solenoid D
24
Shift solenoid E
25
Pressure control solenoid
26
Speedometer signal
27
HOLD indicator light
K–12
ELECTRONIC CONTROL SYSTEM
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ELECTRONIC CONTROL ITEMS AND CONTENTS
A6E561501030T04
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COMPONENT DESCRIPTIONS (ELECTRONIC CONTROL)
A6E561501030T05
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Item
Content
Line pressure control
•
With linear type pressure control solenoid, adjusts to suitable line pressure for engine
load condition and vehicle driving condition
Shift control
•
Detects engine load condition and vehicle speed, and switches to the most suitable
gear position according to the preset shift diagram
•
Selects HOLD mode by switching HOLD switch
•
In D range, automatically switches between POWER and NORMAL modes according
to accelerator pedal depressing speed
Clutch pressure direct control
(Direct electric shift control)
•
With duty-cycle type shift solenoids A, B, and C, directly performs electronic control for
clutch engagement pressure suitable for engine load condition and vehicle driving
condition
Feedback control
•
Performs real-time feedback correction for clutch engagment pressure to achieve
target shifts
•
Performs optimal correction for clutch engagement pressure to reduce changes in
engine performance and/or elapsed transaxle
Engine-transaxle total control
•
Optimally controls engine output torque when shifting
•
Operates optimal clutch engagement pressure corresponding to engine output torque
TCC control
•
According to preset TCC point, performs TCC operation via smooth TCC
Slope mode control
•
Changes the shift point to prevent frequent shifting up/down when climbing hills
On-board diagnostic system
•
Detects and/or memorizes failure of input/output part and transaxle condition
Part name
Function
Input
system
HOLD switch
•
Selects driving modes (HOLD) and changes driving patterns
TR switch
•
Detects selector lever ranges/positions
TP sensor
•
Detects throttle valve opening angle
Input/turbine speed sensor
•
Detects forward clutch drum (input) revolution speed
Oil pressure switch
•
Detects forward clutch pressure
VSS
•
Detects differential gear case (output) revolution speed
Brake switch
•
Detects use of service brake
TFT sensor
•
Detects the ATF temperature
ECT sensor
•
Detects the engine coolant temperature
CKP sensor
•
Detects the engine revolution speed
MAF sensor
•
Detects intake air amount
Output
system
Linear type
Pressure control solenoid
•
Adjusts line pressure
Duty-cycle type
Shift solenoid A
•
Controls clutch engagement pressure
Shift solenoid B
•
Controls clutch engagement pressure
Shift solenoid C
•
Controls clutch engagement pressure
ON/OFF type
Shift solenoid D
•
Switches hydraulic passages for bypass valve and 3-4 shift
valve
Shift solenoid E
•
Switches hydraulic passages for low and reverse shift valve,
TCC, and control valve
HOLD indicator light
•
By switching HOLD switch, illuminates to indicate that it is in
HOLD mode
•
Flashes when failure is detected by diagnosis function
Speedometer signal
•
Outputs vehicle speed signal to speedometer
ELECTRONIC CONTROL SYSTEM
K–13
K
INPUT/OUTPUT SIGNAL AND RELATED CONTROLS
A6E561501030T06
X : Available
O : Back up
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Component
Control item
Line
pressure
control
Shift
control
Clutch
pressure
direct
control
(Direct
electric
shift
control)
Feedback
control
Engine-
transaxle
total
control
Torque
converter
clutch
control
Slope
mode
control
On-board
diagnostic
function
Input
HOLD switch
X
Transaxle range
switch
X
X
X
Throttle position
sensor
X
X
X
X
X
Input/turbine
speed sensor
X
O
X
X
X
X
Vehicle speed
sensor
X
X
X
X
X
X
Brake switch
X
Transaxle fluid
temperature
sensor
X
X
X
X
X
X
Engine coolant
temperature
sensor
X
X
Crankshaft
position sensor
X
X
X
X
X
Mass air flow
sensor
X
X
X
X
X
X
Oil pressure
switch
X
X
Output
Pressure control
solenoid
X
X
Shift solenoid A
X
X
X
X
X
X
Shift solenoid B
X
X
X
X
Shift solenoid C
X
X
X
X
Shift solenoid D
X
X
X
Shift solenoid E
X
X
X
X
HOLD indicator
light
X
X
Speedometer
signal
K–14
AUTOMATIC TRANSAXLE SHIFT MECHANISM
OUTLINE
A6E561646010T01
•
The mechanical type shift lock system is essentially carried over from that of the current PREMACY (CP)
models. (See Mazda PREMACY Training Manual 3351-1A-01A)
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STRUCTURAL VIEW
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SHIFT-LOCK SYSTEM
A6E561646010T03
Outline
•
To make operation smoother and to simplify internal construction, the shift lock system directly judges
movement of the slider block with the slider pin.
Structure
•
The shift-lock unit consists of the interlock cable, interlock cam, and lock unit.
Operation
The selector lever can be shifted from P position only when the following conditions are satisfied.
•
The brake pedal is depressed.
•
The selector lever push button is depressed.
When the brake pedal is not depressed, the slider pin
is pressed into the position shown below by the brake
pedal. Thus the slider block is inhibited from moving
in direction A via the cam. In this condition, the
interlock cable and interlock cam are locked, and the
guide pin on the shift lever does not move out of the
position. Thus the select lever cannot be shifted to
other than P position.
AUTOMATIC TRANSAXLE SHIFT MECHANISM
A6E5616T001
A6E5616T002
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