Loading ...
Loading ...
Loading ...
EC-448
[QR (WITH EURO-OBD)]
FUEL PUMP CIRCUIT
3. DETECT MALFUNCTIONING PART
Check the following.
● Harness connectors M17, B1
● Fuse block (J/B) connector M1
● 15A fuse
● Harness for open or short between fuel pump relay and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK CONDENSER CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
3. Check harness continuity between fuel pump relay terminal 3 and condenser terminal 1, condenser termi-
nal 2 and ground.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check the following.
● Harness connectors B22, B128 (RHD models)
● Harness for open or short between fuel pump relay and condenser
● Harness for open or short between condenser and ground
>> Repair open circuit or short to ground or short to power in harness connectors.
6. CHECK CONDENSER
Refer to EC-450, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace condenser.
7. CHECK FUEL PUMP POWER SUPPLY AND GROUND CIRCUIT FOR OPEN AND SHORT
1. Disconnect “fuel level sensor unit and fuel pump” harness con-
nector.
2. Check harness continuity between fuel pump relay terminal 3
and “fuel level sensor unit and fuel pump” terminal 5, “fuel level
sensor unit and fuel pump” terminal 3 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.
Continuity should exist.
Continuity should exist.
PBIB0506E
Loading ...
Loading ...
Loading ...