Honda S2000 Service Manual page 314

PGM-FI System
DLC Circuit Troubleshooting (cont'd)
7 . Disconnect ECM connector A (32P). Make sure the
OBD ll scan tooi or Honda PGM Tester is
disconnected from the DLC.
Check for continuity between DLC terminal No. 15
and body ground.
OATA LINK CONNECTOR (DLC) (16P)
Wire side of female terminals
ls there continuity?
YES Repair short to ground in the wire between
DLC terminal No. 15 and the ECM (A21). After
repairing the wire, check the DTC with the OBD ll
scan tool/Honda PGM Tester and go to the DTC
Troubleshooting index. I
NO Go to step 9.
9. Check for continuity between DLC terminal No. 15
a n d E C M t e r m i n a l 4 2 1 .
DATA LINK CONNECTOR {DLC) (16P)
12 t 3 5 l r /
K-L|NE I
(cRY) |
/.
ECM CONNECTOR A (:
,9
l2Pl
K.LINE
{GRY)
2
6
) | s
l 0
12
t 3 1 7 1E 1 9
m
21l ./
24
26
n
a
29 30 32
Wire side of female terminals
1 1 - 8 6
ls there continuity?
YES Substitute a known-good ECM and recheck
(see page 11-5). lfthe symptom/indication goes
a w a y , r e p l a c e t h e o r i g i n a l E C M . I
NO Repair open in the wire between DLC terminal
No. 15 and the ECM (A21). After repairing the wire,
check the DTC with the OBD ll scan tool/Honda
PGM Tester and go to the DTC Troubleshooting
I n d e x . l
10. Turn the ignition switch OFF.
11. Disconnect ECM connector A (32P). Make sure the
OBD ll scan tool or Honda PGM Tester is
disconnected from the DLC.
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, Measure voltage between DLC terminals No. 13 and
N o . 1 5 .
DATA LINK CONNECTOR (DLC) {16P)
Wire side ot temale terminals
ls there 0 V?
YES Substitute a known-good ECM and recheck
(see page 11-5). lf the symptom/indication goes
a w a y , r e p l a c e t h e o r i g i n a l E C M . I
NO - Repair short to power in the wire between the
D L C t e r m i n a l N o . 1 5 a n d t h e E C M ( A 2 1 ) , A f t e r
repairing the wire, check the DTC with the OBD ll
scan tool/Honda PGM Tester and go to the DTC
Troubleshooting index. !