Power Assisted Steering System: 6C-46
DTC “C1153” EPS Control Unit Supply Voltage Circuit Malfunction (LT-A750XP/ZK9)
B931G46304015
Troubleshooting
Possible Cause
• Faulty regulator/rectifier.
• Faulty EPS control unit.
• Faulty wire harness, etc.
Step Action Yes No
1 1) Remove the seat. Refer to “Seat Removal and
Installation in Section 9D in related manual”.
2) Measure the voltage between the (+) and (–) battery
terminals using the multi circuit tester.
Special tool
(A): 09900–25008 (Multi circuit tester set)
Tester knob indication
Voltage ( )
Battery voltage
12.0 V and more
Is the voltage over 12 V?
Go to Step 2. Charge or replace the
battery.
2 1) Start the engine at 5 000 r/min with the dimmer switch
set to HI.
2) Measure the voltage between the (+) and (–) battery
terminals.
Special tool
: 09900–25008 (Multi circuit tester set)
Tester knob indication
Voltage ( )
Regulated voltage
13.5 – 15.0 V at 5 000 r/min
Is the voltage 13.5 – 15.0 V?
Go to Step 3. Inspect the regulator/
rectifier. Refer to
“Regulator / Rectifier
Inspection in Section 1J
in related manual”.
(A)
I931G3630039-01
To Next Page
Loading...
