Honda Civic Service Manual page 510

How to Troubleshoot EPS DTCs
The troubleshooting flowchart procedures assume that
the cause of the problem is still present and the EPS
indicator is still on, Following the flowchart when the
EPS indicator does not come on can result in incorrect
d i a g n o s i s .
The connector iliustrations show the female terminal
c o n n e c t o r s w i t h a s i n g l e o u t l i n e a n d t h e m a l e t e r m i n a l
connectors with a double outline.
1. Ouestion the customer about the conditions when
the problem occured, and try to reproduce the
same conditions for troubleshooting. Find out
when the EPS indicator came on, such as while
t u r n i n g . a f t e r t u r n i n g , w h e n t h e v e h i c l e w a s a t a
ce rta in speed, etc.
2. When the EPS indicator does not come on during
the test drive, but troubleshooting is done based on
the DTC, check for loose connectors, poor terminal
contact. etc in the affected circuit, before you start
troubleshooting.
3. After trou bleshooting, clear the DTC and test-drive
the vehicle. Be sure the EPS indicator does not
c o m e o n .
How to Retrieve EPS DTCs
Honda PGM Tester Method:
1, With the ignition switch OFF, connect the Honda
PGM Tester (A) to the 16P data link connector (DLC)
(B) located under the dash on the driver's side of
t h e v e h i c l e .
2 . T u r n t h e i g n i t i o n O N ( l l ) , a n d f o l l o w t h e p r o m p t s o n
the PGM Tester to display the DTC(s) on the screen.
After determining the DTC, refer to the DTC
Troubleshooting Index.
NOTE: See the Honda PGM Tester user's manual
for specific instructions.
Service Check Signal Circuit Method:
1 . W i t h t h e i g n i t i o n s w i t c h O F F , c o n n e c t t h e H o n d a
P G M T e s t e r ( A ) t o t h e 1 6 P d a t a l i n k c o n n e c t o r ( D L C )
(B) located under the dash on the driver's side of
the vehicle.
Short the SCS circuit to body ground using the
Honda PGN4 Tester.
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 ) .
Record the DTC.
( c o n t ' d )
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