Eps Indicator Circuit Troubleshooting - Honda Civic 2002-2003 Service Manual

• EPS Indicator Circuit Troubleshooting
•
•
I. Turn the ignition switch ON (III, start the engine,
and watch the EPS indicator.
Does the EPS indicator come on?
YES-If the EPS indicator comes on and goes off, it's
OK. If the EPS indicator stays on or blinks, go to
step 12.
NO-Go to step 2.
2. Turn the ignition switch OFF, then ON (III again,
and watch the brake system indicator.
Does the brake system indicator come on?
YES-Go to step 3.
NO-Repair open in the indicator power source
circuit. •
Blown No. 10 (7.5AI fuse.
Open in the wire between the No. 10 (7.5AI fuse
and gauge assembly.
Open circuit inside the under-dash fuse/relay box.
Faulty gauge assembly.
3. Turn the ignition switch OFF.
4. Connect a jumper wire between the gauge
assembly 22P connector terminal No. 13 and body
ground, then turn the ignition switch ON (III.
GAUGE ASSEMBLY 22P CONNECTOR IBlue connector)
WlP
IYEl/BlU)
JUMPER
WIRE
Wire side of female terminals
Does the EPS indicator come on?
YES-Go to step 5.
NO-Inspect the EPS indicator bulb, if the bulb is
OK, replace the bulb circuit board in the gauge
assembly .•
5. Turn the ignition switch OFF.
6. Disconnect EPS control unit connector C (20PI.
7. Turn the ignition switch ON (III.
8. Connect EPS control unit connector C (20PI
terminal No.6 to body ground with a jumper wire.
EPS CONTROL UNIT CONNECTOR C (20P)
WLP (YEL/BLU)
V 213V 516 7 8V 101
111/131/151/171/1920
JUMPER WIRE
Wire side offemaleterminals
Does the EPS indicator come on?
YES-Go to step 9.
NO-Repair open in the wire between the gauge
assembly and the EPS control unit .•
9. Turn the ignition switch OFF.
10. Disconnect EPS control unit connector A (2PI.
I I. Check for continuity between EPS control unit
connector A terminal No.2 and body ground.
EPS CONTROL UNIT CONNECTOR A (2PI
Wire side offemale terminals
Is there continuity?
YES-Check for loose or poor connections at the
EPS control unit. If the connections are good,
substitute a known·good EPS control unit. If the
symptom/indication goes away, replace the
original EPS control unit and recheck .•
NO-Repair open in the wire or a bad ground at
GI51 .•
(cont'dl
17-47