Honda Prelude 1993 Service Manual page 308

lFrom page 11-62)
ls there 0.1 V or l€ss when the
ignition switch is tirsr turned
o n ?
Measure voltage belween D14
{ + ) t e r m i n a l a n d A 2 6 ( - )
telminal.
ls there more than 0.1 V?
Disconnect the "D" connector
trom the main wire harness.
Measure voltage between D14
{ + } t e r m i n a l a n d A 2 6 { - ) r e r
minal.
Bop.ir rhon in WHT
wlro b.tw.on ECM
(Dl4l and HO2S.
ls there more than 0.1 V?
Measu.e voltage at the engine
wi.e harness side ot the HO2S
connector between GRNMHT
( - ) a n d W H T ( + ) .
Substitute a known{ood
ECM
and r6.hock. lf symptom/indlca-
tion goos away, roplact the orlgl-
nal ECM.
ls th€re mor€ than 0.1 V?
Chock for oDcn in IIVHT wiro be-
tw..n ECM (D141 and HO2S. lf
wlrs ir OK, r6poir opcn in
GBN/WHT wiro berw66n ECM
(D221 and HO2S.
H23A1 ongin6 (USA: Si/Canadar SR),
H22Al ongino (USA: Si VTEC/Conada: SR-V);
GRl{/
WHT
W H T ( + )
F2241
GRI{/
sngino {S):
WHT
- l
( + l
IVHT
moro than
o.'t v?
DIGITAL MULTIMETER
KS-AHM-32-OO3
HO25
45 .m
(4.5 kg-m, 33 lb-ft|
HO2S
45 N.m
14.5 kg-m, 33 lb-ft)
DIGITAL MULTIMETER
KS-AHM-32-OO3
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