Eps Components Dtc Troubleshooting; Dtc 1: Power Relay Stuck On; Dtg 2: Fail-Safe Relay Stuck On; Dtc 3: Lower Fet Stuck On - Honda S2000 Service Manual

EPS Components
DTC Troubleshooting
DTC 1: Power Relay Stuck ON
DTG 2: Fail-safe Relay Stuck ON
1 . C l e a r t h e D T C .
2. Start the engine.
3. Wait at least 10 seconds.
Does the EPS indicatot come on and DTC 1 or
DTC 2 indicated?
YES - Check for loose EPS control unitconnectors.
lf necessary, substitute a known-good EPS control
unit and recheck.l
NO The system is OK at this time.I
17-28
DTC 3: Lower FET Stuck ON
1, Disconnect EPS control unit connector A (2P) and
the motor 2P connector.
2. 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 N o . 2 a n d m o t o r 2 P
c o n n e c t o r t e r m i n a l N o . 1 .
FPS CONTROL UNIT
MOTOR 2P CONNECToR
db-r'rrrriCrOn I tzpt
MOTOR+
(RED}
Terminal side of female terminals
ls thete continuity?
YES - Go to step 3.
NO - Repair open in the wire between EPS control
unit and the motor.I
3. Check for continuity between the EPS control unit
connector A (2P) terminal No. I and motor 2P
connector terminal No. 2.
MOTOR 2P CONNECTOR
EPS CONTROL UNIT
CONNECTOR A {2PI
MOTOR_
(GRN)
T e r m i n a l s i d e o J f e m a l e t e r m i n a l s
ls thete continuity?
YES Go to step 4.
NO Repair open in the wire between the EPS
control unit and the motor.l