Honda EP3 Service Manual page 842

5. Connect the No. 1 and No. 2 terminals of the
compressor clutch relay 4P socket with a jumper
wire.
COMPRESSOR CLUTCH RELAY 4P SOCKET
JUMPER WIRE
Does the compressor clutch click ?
YES Go to step 6.
N O - G o t o s t e p 1 4 .
6. Disconnect the jumper wire.
7 . T u r n t h e i g n i t i o n s w i t c h O N ( l l ) .
8. Measure the voltage between the No. 3 terminal of
the compressor clutch relay 4P socket and body
g r o u n d .
COMPRESSOR
CLUTCH RELAY 4P SOCKET
ls there battery voltage?
YES-Go to step 9.
NO Repair open in the wire between the No.
fuse in the under-dash fuse/relay box and the
compressor clutch relay, I
1 4
L Turn the ignition switch OFF.
10. Reinstallthe compressor clutch relay.
1 1. l\4ake sure the Ay'C switch is OFF.
1 2 . T u r n t h e i g n i t i o n s w i t c h O N { l l ) .
13. Uslng the Backprobe Set, measure the voltage
between the No. 18 termina! of ECI\4 connector
E {31P) and body ground with the ECM connectors
connected.
ECM CONNECTOR E 131P}
2
3 t 4
5 6 1 E 9
1 4
1 5 16
m
21
22 23 24 26
27
29
31
RED
Wire side of female terminals
ls there battery voltage?
YES Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 11-6). lf the symptom/indication
goes away with a known-good ECIM, replace the
o r i g i n a l E C M . I
NO Repair open in the wire between the
c o m p r e s s o r c l u t c h r e l a y a n d t h e E C M . I
1 4 . D i s c o n n e c t t h e j u m p e r w i r e .
15. Disconnect the compressor clutch lPconnector.
{cont'd)
21-31