Nissan Versa Note. Manual — part 767
DIAGNOSIS AND REPAIR WORKFLOW
STC-17
< BASIC INSPECTION >
C
D
E
F
H
I
J
K
L
M
A
B
STC
N
O
P
Other conditions
Memo
Interview sheet
Customer
name
MR/MS
Registration
number
Initial year
registration
Vehicle type
VIN
Storage date
Engine
Mileage
km (Mile)
STC-18
< DTC/CIRCUIT DIAGNOSIS >
C1601 BATTERY POWER SUPPLY
DTC/CIRCUIT DIAGNOSIS
C1601 BATTERY POWER SUPPLY
DTC Logic
INFOID:0000000009667181
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.
DTC REPRODUCTION PROCEDURE
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform “EPS” self-diagnosis.
Is DTC “C1601” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009667182
Regarding Wiring Diagram information, refer to
.
1.
CHECK EPS CONTROL UNIT GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect EPS control unit harness connector.
3. Check continuity between EPS control unit harness connector terminal and ground.
4. Connect EPS control unit harness connector.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
2.
CHECK EPS CONTROL UNIT POWER SUPPLY CIRCUIT (1)
1. Check voltage between EPS control unit harness connector terminal and ground.
DTC
Display item
Malfunction detected condition
Possible cause
C1601
BATTERY VOLT
When a power supply voltage to the EPS control unit
is maintained at 17.5 V or more or at less than 9V
continuously for five second or more.
• Harness or connector
• EPS control unit
• Fuse
• Power supply system
• Battery
EPS control unit
—
Continuity
Connector
Terminal
E23
18
Ground
Yes
C1601 BATTERY POWER SUPPLY
STC-19
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
H
I
J
K
L
M
A
B
STC
N
O
P
2. Turn ignition switch ON.
CAUTION:
Never start the engine.
3. Check voltage between EPS control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK EPS CONTROL UNIT POWER SUPPLY CIRCUIT (2)
1. Turn ignition switch OFF.
2. Check the 10A fuse (No. 5).
3. Check the harness for open or short between EPS control unit harness connector M53 terminal 4 and the
10A fuse (No. 5).
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for ignition power supply circuit. Refer to
NO
>> Repair or replace malfunctioning component.
4.
CHECK EPS CONTROL UNIT POWER SUPPLY CIRCUIT (3)
1. Turn ignition switch OFF.
2. Check voltage between EPS control unit harness connector terminal and ground.
3. Turn ignition switch ON.
CAUTION:
Never start the engine.
4. Check voltage between EPS control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> GO TO 5.
5.
CHECK EPS CONTROL UNIT POWER SUPPLY CIRCUIT (4)
1. Turn ignition switch OFF.
2. Check the 60A fusible link (J).
3. Check the harness for open or short between EPS control unit harness connector E23 terminal 17 and the
60A fusible link (J).
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit. Refer to
PG-5, "Wiring Diagram — Battery
EPS control unit
—
Voltage
Connector
Terminal
M53
4
Ground
Approx. 0 V
EPS control unit
—
Voltage
Connector
Terminal
M53
4
Ground
Battery voltage
EPS control unit
—
Voltage
Connector
Terminal
E23
17
Ground
Battery voltage
EPS control unit
—
Voltage
Connector
Terminal
E23
17
Ground
Battery voltage
STC-20
< DTC/CIRCUIT DIAGNOSIS >
C1601 BATTERY POWER SUPPLY
NO
>> Repair or replace malfunctioning component.
6.
CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect torque sensor harness connector.
3. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or
replace terminal.
Is the inspection result normal?
YES
>> Replace EPS control unit. Refer to
STC-37, "Removal and Installation"
.
NO
>> Repair or replace malfunctioning component.
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