Eps Control Unit Internal Circuit - Honda Civic 2002-2003 Service Manual

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14. Check for continuity between EPS control unit
connector C (20P) terminal No. 19 and ECM
connector E (31P) terminal No. 26.
ECM CONNECTOR E (31P)
EPS CONTROL UNIT
CONNECTOR C (20PI
Is there continuity?
YES-Go to step 15.
NO-Repair open in the wire between the EPS
control unit and ECM .•
15. Disconnect the gauge assembly 22P connector.
16. Check for continuity between EPS control unit
connector C (20P) terminal No. 19 and body ground.
EPS CONTROL UNIT CONNECTOR C (20PI
=
Wire side of female terminals
Is there continuity?
YES-Repair short to body ground in the wire
between the EPS control unit, the test tachometer
connector, the gauge assembly, and the ECM .•
NO-Check for loose ECM control unit connectors.
If necessary, substitute a known-good ECM control
unit and recheck .•
DTC
37: EPS Control Unit Internal Circuit
(Input Circuit For Motor Voltage)
1. Clearthe DTC.
2. Start the engine.
3. Turn the steering wheel from lock-to-Iock several
times, and wait 10 seconds or more.
Does the EPS indicator come on?
YES-Go to step 4.
NO-Check for loose wires or poor connections. If
the connections are good, the system is OK at this
time .•
4. Stop the engine, and verify the DTC.
Is DTe 37 indicated?
YES-Check for loose EPS control unit connectors.
If necessary, substitute a known-good EPS control
unit and recheck .•
NO-Perform the appropriate troubleshooting for
the code indicated .•
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