Dtc 4: Upper Fet Stuck On - Honda S2000 Service Manual

4. Check for continuity between EPS control unit
c o n n e c t o r A ( 2 P ) t e r m i n a l s N o . 2 a n d N o . 1 .
EPS CONTROL UNIT
CONNECTOR A I2P}
MOTOR+
(REDI
MOTOR_
{GRN}
Terminal side of lemale terminals
ts there continuity?
YES Repair short between the RED and GRN
wires for the EPS motor circuit.l
NO Replace the steering gearbox. (Short circuit to
body ground inside the gearbox).I
DTC 4: Upper FET Stuck ON
1. Disconnect EPS control unit connector C (2P).
2. Check for continuity between EPS control unit
connector C (2P) terminal No. 1 and body ground.
EPS CONTROL UNIT
coNNECTOn C {2P}
Terminal side of female terminals
ls there continuity?
YES-Check for loose EPS control unit connectors.
lf necessary, substitute a known-good EPS control
unit and recheck.l
NO- Repair open in the wire between the EPS
control unit and the body ground (G351). t
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