Mazda 3 Service Manual: TCM Inspection [FS5 A EL]
NOTE:
-
The TCM terminal voltage can vary with conditions when measuring and changes due to age deterioration on the vehicle, causing false diagnosis. Therefore a comprehensive inspection of the input and output systems, and the TCM is necessary to determine where the malfunction occurs.
1. Connect the voltmeter (-) lead to body GND.
2. Measure the voltage at each terminal.
-
If any incorrect voltage is detected, inspect the related system(s), wiring harnesses and connector(s) referring to the “Inspection Item” column in the “TCM Terminal Voltage”.
TCM Terminal Voltage (Reference)
|
Terminal |
Connected to |
Test Condition |
Voltage (V) |
Inspection Item |
|
A |
— |
— |
— |
— |
|
B |
CAN module |
Because this terminal is for CAN, no valid determination of terminal voltage is possible. |
||
|
C |
— |
— |
— |
— |
|
D |
— |
— |
— |
— |
|
E |
CAN module |
Because this terminal is for CAN, no valid determination of terminal voltage is possible. |
||
|
F |
Down switch |
Selector lever down-shift position |
Below 1.0 |
|
|
Except selector lever down-shift position |
B+ |
|||
|
G |
Up switch |
Selector lever up-shift position |
Below 1.0 |
|
|
Except selector lever up-shift position |
B+ |
|||
|
H |
— |
— |
— |
— |
|
I |
AT main relay |
Ignition switch off |
Below 1.0 |
|
|
Ignition switch ON |
B+ |
|||
|
J |
Battery |
Under any condition |
B+ |
|
|
K |
M position switch |
M position |
Below 1.0 |
|
|
Except M position |
B+ |
|||
|
L |
GND |
Under any condition |
Below 1.0 |
|
|
M |
GND |
Under any condition |
Below 1.0 |
|
|
N |
— |
— |
— |
— |
|
O |
AT main relay |
Ignition switch off |
Below 1.0 |
|
|
Ignition switch ON |
B+ |
|||
|
P |
AT main relay |
Ignition switch off |
Below 1.0 |
|
|
Ignition switch ON |
B+ |
|||
|
Q |
— |
— |
— |
— |
|
R |
— |
— |
— |
— |
|
S |
Oil pressure switch |
1GR |
Below 1.0 |
|
|
2GR |
Below 1.0 |
|||
|
3GR |
Below 1.0 |
|||
|
4GR |
B+ |
|||
|
5GR |
B+ |
|||
|
T |
— |
— |
— |
— |
|
U |
TR switch |
Selector lever at P position |
4.3—4.8 |
|
|
Selector lever at R position |
3.8—4.2 |
|||
|
Selector lever at N position |
3.0—3.5 |
|||
|
Selector lever at D position |
2.2—2.7 |
|||
|
Selector lever at M position |
2.2—2.7 |
|||
|
V |
TR switch, TFT sensor |
Under any condition |
Below 1.0 |
|
|
W |
— |
— |
— |
— |
|
X |
— |
— |
— |
— |
|
Y |
Input/turbine speed sensor (-) |
(See Input/turbine speed sensor.) |
|
|
|
Z |
VSS |
(See VSS.) |
|
|
|
AA |
TFT sensor |
ATF temperature 20 °C {68 °F} |
Approx.3.3 |
|
|
ATF temperature 65 °C {149 °F} |
Approx.1.3 |
|||
|
AB |
Input/turbine speed sensor (+) |
(See Input/turbine speed sensor.) |
|
|
|
AC |
Intermediate sensor |
(See Intermediate sensor.) |
|
|
|
AD |
Pressure control solenoid A (+) |
(See Pressure control solenoid A (+).) |
|
|
|
AE |
Pressure control solenoid A (-) |
(See Pressure control solenoid A (-).) |
|
|
|
AF |
— |
— |
— |
— |
|
AG |
Shift solenoid A |
(See Shift solenoid A.) |
|
|
|
AH |
Shift solenoid D |
1GR at D position |
Below 1.0 |
|
|
2GR at D position |
Below 1.0 |
|||
|
3GR at D position |
Below 1.0 |
|||
|
4GR at D position |
B+ |
|||
|
5GR at D position |
B+ |
|||
|
AI |
Shift solenoid F |
1GR at D position |
B+ |
|
|
2GR at D position |
B+ |
|||
|
3GR at D position |
B+ |
|||
|
4GR at D position |
B+ |
|||
|
5GR at D position |
Below 1.0 |
|||
|
AJ |
Shift solenoid B |
(See Shift solenoid B.) |
|
|
|
AK |
Shift solenoid E |
TCC released |
Below 1.0 |
|
|
TCC engaged |
B+ |
|||
|
AL |
Shift solenoid C |
(See Shift solenoid C.) |
|
|
|
AM |
Pressure control solenoid B |
(See Pressure control solenoid B.) |
|
|
Input/Output Wave From (Reference)
Shift solenoid A
-
TCM terminals
-
AG (+)—body GND (-)
-
Oscilloscope setting
-
5 V/DIV (Y), 5 ms/DIV (X), DC range
-
Test Condition
-
The following conditions are met:
-
Selector lever position: D position
-
Gear position: 4GR
Shift solenoid B
-
TCM terminals
-
AJ (+)—body GND (-)
-
Oscilloscope setting
-
5 V/DIV (Y), 5 ms/DIV (X), DC range
-
Test Condition
-
The following conditions are met:
-
Selector lever position: D position
-
Gear position: 1GR
Shift solenoid C
-
TCM terminals
-
AL (+)—body GND (-)
-
Oscilloscope setting
-
5 V/DIV (Y), 5 ms/DIV (X), DC range
-
Test Condition
-
The following conditions are met:
-
Selector lever position: D position
-
Gear position: 1GR
Pressure control solenoid B
-
TCM terminals
-
AM (+)—body GND (-)
-
Oscilloscope setting
-
5 V/DIV (Y), 5 ms/DIV (X), DC range
-
Test Condition
-
Shifting from 4GR to 5GR or from 5GR to 4GR
Pressure control solenoid A (+)
-
TCM terminals
-
AD (+)—body GND (-)
-
Oscilloscope setting
-
5 V/DIV (Y), 1 ms/DIV (X), DC range
-
Test Condition
-
The following conditions are met:
-
Switch the ignition to ON (engine off)
-
Selector lever position: P position
-
Accelerator pedal fully depressed
Pressure control solenoid A (-)
-
TCM terminals
-
AE (+)—body GND (-)
-
Oscilloscope setting
-
200 mV/DIV (Y), 1 ms/DIV (X), DC range
-
Test Condition
-
The following conditions are met:
-
Switch the ignition to ON (engine off)
-
Selector lever position: P position
-
Accelerator pedal fully depressed
Input/turbine speed sensor
-
TCM terminals
-
AB (+)—Y (-)
-
Oscilloscope setting
-
1 V/DIV (Y), 2 ms/DIV (X), DC range
-
Test Condition
-
Idle at P position after warm-up
Intermediate sensor
-
TCM terminals
-
AC (+)—body GND (-)
-
Oscilloscope setting
-
1 V/DIV (Y), 200 µs/DIV (X), DC range
-
Test Condition
-
The following conditions are met:
-
Gear position: 3GR
-
Vehicle speed: 30 km/h {19 mph}
VSS
-
TCM terminals
-
Z (+)—body GND (-)
-
Oscilloscope setting
-
1 V/DIV (Y), 2 ms/DIV (X), DC range
-
Test Condition
-
The following conditions are met:
-
Gear position: 3GR
-
Vehicle speed: 30 km/h {19 mph}
TCM Configuration [Fw6 A EL]
NOTE:
The TCM is built into the control valve body.
1. Verify TCM configuration implementation necessity for replacement parts.
Replacement part
Conf ...
TCM Removal/Installation [FS5 A EL]
CAUTION:
Do not apply a shock to or touch the projection on the TCM, otherwise it
may not operate normally.
1. Perform the following procedures.
a. Remove the battery cover..
b. D ...
Other materials:
Fan Switch Inspection [Manual Air Conditioner]
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Upper panel.
b. Shift lever knob (MTX).
c. Selector lever knob (ATX).
d. Shift panel.
e. Side wall.
f. Console.
g. Front scuff plate.
h. Front side trim.
i. Dashboard under cover.
j. Glove compartment. ...
Shift Position Indication
The selector position is indicated when the
ignition is switched ON.
Gear position indication
In manual shift mode, the “M” of the shift
position indication illuminates and the
numeral for the selected gear is displayed.
Warning Light
The warning light turns on when the
system has a malfun ...
When Liftgate/Trunk Lid Cannot be Opened
If the vehicle battery is dead or there is a
malfunction in the electrical system and
the liftgate/trunk lid cannot be opened,
perform the following procedure as an
emergency measure to open it:
(5–door)
Remove the cap on the interior
surface of the liftgate with a flathead
screwdriver. ...
