Prelude L4-1958cc SOHC (1988)
Fuel Shut-off Solenoid Relay: Testing and Inspection
1.
With ignition switch in Off position, remove dashboard under cover.
2.
Remove fuel cut-off relay and check for continuity between No. 3 terminal and body ground. Continuity should exist.
3.
If there is no continuity, check black wire between fuel cut-off relay and ground No. G401.
4.
Attach positive probe of voltmeter to No. 2 terminal and negative probe to No. 3 terminal, then turn ignition switch to On position. Battery voltage
should be available.
5.
If there is no voltage, check black/yellow wire from ignition switch and fuel cut-off relay as well as No. 12 fuse.
6.
Turn ignition switch to Off position and attach positive probe of voltmeter to No. 4 terminal and negative probe to No. 3 terminal, then turn
ignition switch to On position. Battery voltage should be available.
7.
If there is no voltage, check blue wire from ignition coil and fuel cut-off relay.
8.
Turn ignition switch to Off position and connect jumper wire between No. 1 terminal and No. 2 terminal.
9.
Turn ignition switch to On position. Fuel pump should run.
10.
If fuel pump does not run, remove left maintenance access cover in luggage area and disconnect 2 pin connector, then attach positive probe of
voltmeter to yellow/black terminal and negative probe to body ground. Battery voltage should be available.
11.
If there is battery voltage, check black wire between fuel pump and ground No. G401 and replace fuel pump.
12.
If battery voltage is not available, check yellow/black wire between fuel cut-off relay and fuel pump.
13.
If wires are satisfactory in steps 11 and 12, replace fuel cut-off relay and repeat test.
