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:
HomeLink Wireless Control
System*
NOTE
HomeLink and HomeLink house are
registered trademarks of Johnson
Controls.
The HomeLink system replaces up to
3 hand-held transmitters with a single
built-in component in the auto-dimming
mirror. Pressing the HomeLink button on
the auto-dimming mirror activates garage
doors, gates and ...
Vanity Mirror Illumination Bulb Removal/Installation
1. Disconnect the negative battery cable..
2. Insert a tape-wrapped fastener remover into the service hole, and pry it in
the direction indicated by the arrow to remove the lens.
3. Remove the vanity mirror illumination bulb.
4. Install in the reverse order of removal. ...
Tweeter Inspection
1. Disconnect the negative battery cable..
2. Remove the inner garnish..
3. Remove the tweeter..
4. Verify the resistance between tweeter terminals.
If not within the specification, replace the tweeter.
Resistance
Without Bose®: 3.4—4.6 ohms
With Bose®: 3 ...
