Dtc "C1152", "C1154", "C1155" Eps Control Unit Malfunction (Lt-A750Xp/Zk9) - Suzuki kq750 Service Manual

6C-47 Power Assisted Steering System:
Step
3 1) Turn the ignition switch OFF.
2) Check the EPS control unit coupler for loose or poor
contacts. If OK, then disconnect the EPS control unit
coupler.
3) Start the engine at 5 000 r/min with the dimmer switch
set to HI.
4) Measure the voltage between terminal "A" and terminal
"B" at the coupler.
Special tool
(A): 09900–25008 (Multi circuit tester set)
Tester knob indication
Voltage (
(A)
"A"
Is the voltage same as Step 2?

DTC "C1152", "C1154", "C1155" EPS Control Unit Malfunction (LT-A750XP/ZK9)

C1152 • Relay welding (EPS control unit internal circuit)
C1154 • Relay malfunction (EPS control unit internal circuit)
C1155 • EPS control unit malfunction
Troubleshooting
• Replace the EPS control unit. Refer to "EPS Control Unit Removal and Installation (LT-A750XP/ZK9) (Page 6C-
48)".
Action
)
(A)
( )
"B"
Replace the EPS
control unit.
(–)
I931G3630040-01
Possible Cause
Yes
Inspect the wire
harness. (Faulty ignition
or ground wire)
No
B931G46304016