Honda Civic 2002-2003 Service Manual page 535

EPS Components
DTe Troubleshooting (cont'd)
DTC 62: EPS Control Unit Internal Circuit
(Fail-safe Relay Stuck ON)
1. Clearthe DTC.
2. Start the engine.
Does the EPS indicator come on?
YES-Go to step 3.
NO-Check for loose wires or poor connections. If
the connections are good, the system is OK at this
time .•
3. Stop the engine, and verify the DTC.
Is DTC 62 indicated?
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-Perform the appropriate troubleshooting for
the code indicated .•
17-44
DTC 64: Battery Voltage is Excessively Low
(Fail-safe Relay Contact Failure and Motor
Voltage Fall Off)
1. Clear the DTC.
2. Start the engine.
Does the EPS indicator come on?
YES-Go to step 3.
NO-Check for loose wires or poor connections. If
the connections are good, the system is OK at this
time .•
3. Stop the engine, and verify the DTC.
Is DTC 64 indicated?
YES-Go to step 4.
NO-Perform the appropriate troubleshooting for
the code indicated.
4. Check the No. 18 (60A) fuse in the under-hood fuse/
relay box, and reinstall the fuse if it is OK.
Is the fuse OK?
YES-Go to step 5.
NO-Replace the fuse and recheck .•
5. Disconnect EPS control unit connector A (2P).
6. Measure the voltage between EPS control unit
connector A (2P) terminal No.1 and body ground.
EPS CONTROL UNIT CONNECTOR A 12P)
Wire Side of lernale terminal.
Is there battery voltage?
YES-Check for loose or poor connections althe
EPS control unit connectors, and check for a poor
ground at G151. If necessary, substitute a known-
good EPS control unit and recheck .•
NO-Repair open in the WHT/BLU wire between
the No. 18 (60A) fuse and EPS control unit .•