Nissan Sentra Service Manual: DTC/circuit diagnosis
- C1601 Battery power supply
- C1604 Torque sensor
- C1606 EPS Motor
- C1607, C1608 EPS Control unit
- C1609 Vehicle speed signal
- U1000 CAN Comm circuit
- EPS Warning lamp
Basic inspection
Diagnosis and repair workflow
Work Flow
Detailed flow
1.Interview from the customer
Clarify customer complaints before inspection. First of all,
perform an interview utilizing stc-20, "dia ...
C1601 Battery power supply
DTC Logic
DTC DETECTION LOGIC
DTC
Display item
Malfunction detected condition
Possible cause
C1601
BATTERY VOLT
When a power supply voltage to the EPS control unit
...
Other materials:
BCM branch line circuit
Diagnosis procedure
1.Check connector
Turn the ignition switch off.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the bcm for damage, bend and loose
connection (unit side and
connector side).
Is the inspection result normal?
Yes > ...
C1109 Power and ground system
DTC Logic
DTC DETECTION LOGIC
DTC
Display Item
Malfunction detected condition
Possible causes
C1109
BATTERY VOLTAGE
[ABNORMAL]
When ignition voltage is 10 V or less.
When ignition voltage is 16 V or more.
Harness or connector
...
Precaution for Work
When removing or disassembling each component, be careful not to damage
or deform it. If a component
may be subject to interference, be sure to protect it with a shop cloth.
When removing (disengaging) components with a screwdriver or similar
tool, be sure to wrap the component
with a ...
