Voltage Inspection (Fuel System); Ground Inspection (Fuel System); Inertia Fuel Shutoff Switch Inspection; Fuel Pump Relay - Mazda B-Series 1997 Workshop Manual

FT
FUEL SYSTEM (FOR 2 . 3 ~ 1 3 . 0 ~ 1 4 . 0 ~ )
'
VlEW FROM TERMINAL SlDE
Voltage inspection
1. Connect SST (NGS) to data link connector.
2. Key ON, engine off.
3. Select ACTIVE COMMAND MODE.
4. Select OUTPUT TEST MODE. Press MODE to change to
the "ALL ON" mode, and press START to run fuel pump.
5. Measure the voltage at the power terminal of the fuel tank
unit connector.
Specification: Greater than 10.5 volts
0
MF 1042-A
~ B U O F T - ~ O ~
6. If not as specified, perform the following inspections:
Fuel pump relay (Refer to page FT-153.)
Inertia fuel shutoff switch (Refer to page FT-152.)
If voltage is OK, but fuel pump still inoperative, inspect fuel
pump ground circuit as follows:
GROUND
TERMINAL
VlEW FROM ERMINAL SlDE
I
INERTIAFUEL
HEATFR
- 1
SHUTOFF SWITCH CASE
LOCATED UNDERTHE
INSTRUMENT PANEL
TO THE RIGHT OF THE
BUTTON
TRANSMISSION HUMP
/
I I /
HUTOFF SWITCH
Ground inspection
1. Disconnect the fuel tank unit connector.
2. Measure the resistance between the fuel tank unit
connector ground terminal and a chassis ground.
Specification: Less than 1
ohm
3.
If not as specified, service the connector to chassis
ground.
INERTIA FUEL SHUTOFF SWITCH
Inspection
1. Disconnect the inertia fuel shutoff switch connector.
2.
Check continuity between terminals of the inertia fuel
shutoff switch.
Specification:
Condition Continuity
Tripped
I
No
Not Tripped Yes
3. If not as specified, replace the inertia fuel shutoff switch.