Mazda 626 Station Wagon, Workshop Manual, Page: 243 / 577

AUTOMATIC TRANSAXLE
Tightening torque
7.9—10.7 N m
{80—110 kgfcm, 69.5—95.4 in lbf}
7. Connect the input/turbine speed sensor connector.
8. Install the air cleaner component. (See Section
F1.)
9. Connect the negative battery cable.
VEHICLE SPEED SENSOR (VSS) INSPECTION
Caution
• Water or foreign objects entering the
connector can cause a poor connection or
corrosion. Be sure not to drop water or
foreign objects on the connector when
disconnecting it.
Visual Inspection
1. Remove the VSS. (See K2-38 VEHICLE SPEED
SENSOR (VSS) REMOVAL/INSTALLATION.)
2. Make sure that the sensor is free of any metallic
shavings or particles. If any are found on the
sensor, clean them off.
3. Install the VSS. (See K2-38 VEHICLE SPEED
SENSOR (VSS) REM OVAL/I N STALLATI ON.)
Frequency Inspection
Using the NGS
1. Connect the NGS to the DLC.
2. Connect NGS test lead (+) to the VSS connector B
terminal.
vss
H A R N E S S SID E C O N N E C TO R
(VIEW FRO M HARNESS SIDE)
3. Start the engine.
4. Select the “FREQUENCY METER” function on the
NGS display and press TRIGGER.
5. Press the LINK key to select VS PID.
6. Select the “PID/DATA MONITOR” function on the
NGS display and press TRIGGER.
7. Select the “PCM” on the NGS display and press
TRIGGER.
8. Select the “VS” on the NGS display and press
START.
9. The FREQUENCY METER screen will be
displayed.
Note
• The selected threshold voltage indicated on
the FREQUENCY METER SCREEN should
be 2 VOLTS DC. If an incorrect threshold
voltage is selected, the calculated frequency
value will be incorrect.
• Threshold voltage should be in the DC range.
Press AC/DC key to select DC range.
10. Check frequency value and VSS PID.
Specifications
VSS PID
FREQUENCY
10 KPH Approximately 37 Hz
20 KPH Approximately 74 Hz
30 KPH Approximately 111 Hz
MAX
22
FREQUENCY
VS
20KPH 10KPH
20
19Hz
40KPH 40
MIN 2 VOLT DC
18
| Cl F AR |
I E V L L | AC DC | P R I M
f
L I N K |
m
11. Press LEVEL key to change the threshold voltage
to 6 VOLTS.
12. Make sure that the FREQUENCY indicates 0 Hz.
• If FREQUENCY value is out of specification,
perform the “Open or short circuit” inspection
below and repair or replace parts as
necessary.
Power supply voltage inspection
1. Disconnect the VSS connector.
2. Turn the ignition switch to ON (engine OFF).
3. Measure voltage at VSS connector terminal B.
• If voltage is okay, go to “Open circuit” and
“Short circuit”.
• If voltage is wrong, repair wiring harness
between VSS connector terminal B and PCM.
Specification
4.5-5.5 V
VSS
HARNESS SIDE CO N N E C TO R
(V IE W FROM TER M IN A L SIDE)
K 2-36