Transfer Pump Control System (4 Wheel Steering) - Mazda 626 MX-6 Workshop Manual

4B
FUEL SYSTEM
4 B -6 8
TRANSFER PUMP CONTROL SYSTEM (4 WHEEL
STEERING)
1. Remove the rear seat.
2. Remove the fuel filler cap.
3. Turn the ignition switch ON.
Note
a) The tank should be more than 1/3 full.
b) Due to the delay timer, transfer pump oper­
ation begins approx. 10 sec. after the igni-
> tion switch is turned ON.
4. Listen for the operational sound of the transfer
pump.
5. Install the fuel filler cap.
6. If no sound was heard, check the voltage at the
f _ A i _ _ i
transfer pump connector.
t o
BWBWR
A, C (WG)
I, J (B)
86U04B-075
7. If the voltages are correct, replace the transfer
pump.
8. If not correct, disconnect the transfer pump con­
nector.
9. Check the voltage at the terminals below.
A, C (WG)
I, J (B)
8. If the voltages are correct, replace the transfer
pump.
9. If not correct, check the voltage at terminals of the
fuel pump control unit below.
A (B)
C (BW)
10. If the voltages are correct, replace the fuel pump
control unit.
11. If not correct, repair the power supply circuit and
the ground circuit for the fuel pump control unit.
86U04B-077
Terminal (wire)
Terminal (wire)
Terminal (wire)
Voltage
Approx. 12V
OV
Voltage
Approx. 12V
OV
Voltage
Approx. 12V
OV