Radiator Fan Gircuit Troubleshooting - Honda S2000 Service Manual

Radiator Fan Gircuit Troubleshooting
1 . C h e c k t h e N o . 5 7 { 2 0 A } f u s e i n t h e m a i n u n d e r - h o o d
fuse/relay box. and the No. 20 (7.5A) fuse in the
under-dash fuse/relay box.
ls the fuse (s) OK?
YES- Go to step 2.
NO Replace the fuse (s) and recheck.I
2. Remove the radiator fan relay from the main under-
hood fuse/relay box, and test it (see page 22-40]|.
ls the relay OK?
YES Go to step 3.
NO Replace the radiator fan relay.l
3. Measure the voltage between the No. 1 terminal of
the radiator fan relay 4P socket and body ground,
RADIATOR FAN RELAY 4P SOCKET
Terminal side ot female termrnars
ls there battety voltage?
YES Go to step 4.
NO- Replace the under-hood fuse/relay box.!
4. Connect the No. 1 and No. 2 terminals of the
radiator fan relay 4P socket with a jumper wire,
RAOIATOR FAN RELAY 4P SOCKET
JUMPER
WIRE
Terminal side of female terminals
Does the radiator fan run?
YES Go to step 5.
NO Go to step 6.
Disconnect the jumper, and turn the ignition switch
ON (ll). Check for voltage between the No. 3
terminal of the radjator fan relay 4P socket and
body ground.
RADIATOF FAN RELAY 4P SOCK€T
Terminal side ot female terminals
ls there battery voltage?
YES-Go to step L
NO-Check for an open in the wire between the
under-hood fuse/relay box and under-dash fuse/
relay box.t
(cont'd)
1 0 - 1 5