5000S Wagon L5-2309cc 2.3L SOHC (NF) (1988)
Fuel Pump Relay: Testing and Inspection
Fuel Pump Relay Control
-
pull fuel pump relay out of relay panel, location 10
-
connect multimeter US 1119 between terminals 48 and 50 of relay socket
-
specification: approximately 12 volts
-
connect multimeter US 1119 between terminals 46 and 50 of relay socket
-
switch ignition ON
-
specification: approximately 12 volts
If specification is NOT obtained
-
correct break in wiring according to wiring diagram
-
connect multimeter US 1119 between terminals 46 and 47 of relay socket
-
operate starter briefly
-
specification: minimum 7 volts
If specification IS obtained
-
replace fuel pump relay
If specification is NOT obtained, check wiring as follows:
-
remove electronic ignition control unit access cover in left foot well, and pull harness connector from control unit
-
measure resistance between 25 pin connector and relay socket 10 with multimeter US 1119 as follows:
^
25 pin connector terminal 3 and relay socket 10 terminal 49
^
25 pin connector terminal 14 and relay socket 10 terminal 47
-
specification approximately 0.2 ohms
If specification is NOT obtained
-
repair break in wiring using wiring diagram
If specification IS obtained
-
replace knock sensor ignition control unit