Olc Circuit Troubleshooting - Honda Civic 2002-2003 Service Manual

• OLC Circuit Troubleshooting
•
•
If the ECM does not communicate with the aBO II scan
tool, Honda PGM Tester, or I/M test equipment, do this
troubleshooting procedure.
1. Measure voltage between OLC terminal No. 16 and
body ground.
DATA LINK CONNECTOR (DlCI
r--"'-'''''''","",T""?c=T~ ~
B
4 5 7 (WHT IREDI
9 12 14 16
Terminal side offemale terminals
Is there battery voltage?
YES-Go to step 2.
NO-Repair open in the wire between OLC terminal
No. 16 and the No.9 BACK UP (7.5 A) fuse in the
under-hood fuse/relay box .•
2. Measure voltage between OLC terminals No.4 and
No. 16.
DATA LINK CONNECTOR (DlCI
PG (BlKI
9
+B (WHT/RED}
Terminal side offemale terminals
Is there battery voltage?
YES-Go to step 3.
NO-Repair open in the wire between OLe terminal
No.4 and body ground .•
3. Measure voltage between OLe terminals No.5 and
No. 16.
DATA LINK CONNECTOR (DlC}
lG (BRN/YEll
+ B (WHT IRED}
Terminal side offemale terminals
Is there battery voltage?
YES-Go to step 4.
NO~ Repair open in the wire between OLC terminal
No.5 and the ECM (E3) .•
4. Turn the ignition switch ON (II).
5. Measure voltage between OLC terminals No.5 and
No.7.
DATA LINK CONNECTOR (DlCI
Terminal side offemale terminals
Is there 8.5 V or more?
YES~Go to step 10.
NO-Go to step 6.
6. Turn the ignition switch OFF.
(cont'd)
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