Starter Switch Signal Circuit Troubleshooting - Honda S2000 Service Manual

15. Check for continuity between body ground and
ECM connector terminal C5.
ECM CONNECTOR C 13lPI
ALTF {WHT/RED)
Wire side of female terminats
ls therc continuity?
YES Repair short in the wire between the ECM
(C5) and the alternator. t
NO Substitute a known-good ECM and recheck
(see page 11-5). lf prescribed voltage is now normal,
r e p l a c e t h e o r i g i n a l E C M . I
I 2
4
5 7
8 9 10
A
\ 2 )
l l
12
15 1 7 1 8 2A 21 22
24 25 26 27
28
n
30
Starter Switch Signal Circuit
Troubleshooting
NOTE: The clutch pedal must be pressed.
1. Measure voltage between Eclvl connector
terminals A24 and 820 with the lgnition switch in
the ON {ll) position and the engine start button
pressed.
Wire side of female terminals
ls there battery voltage?
YES The starter switch signal is OK.l
N O - G o t o s t e p 2 .
2. Inspect the No. 21 STARTER SIGNAL (7.5 A) fuse in
the under-dash fuse/relay box.
ls the f use OK ?
YES- Repair open in the wire between the ECM
(A24} ANd thE NO. 21 STARTER SIGNAL (7.5 A)
f u s e . I
NO - Repair short in the wire between the ECM
(A24) and the No. 21 STARTER StcNAL {7.5 A} fuse
o r t h e P G M - F l m a i n r e l a y . R e p l a c e t h e N o . 2 1
S T A R T E R S I G N A L ( 7 . 5 A ) f u s e . l
ECM CONNECTORS
11-97