Nissan Note E12. Instruction — part 601
C1606 EPS MOTOR
STC-23
< DTC/CIRCUIT DIAGNOSIS >
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STC
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C1606 EPS MOTOR
DTC Logic
INFOID:0000000009578762
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 “C1606” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009578763
1.
CHECK EPS MOTOR
Check the EPS motor. Refer to
STC-23, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> EPS motor is malfunction. Replace steering column assembly. Refer to
2.
CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect EPS motor 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.
Component Inspection
INFOID:0000000009578764
1.
CHECK EPS MOTOR
1. Turn the ignition switch OFF.
2. Disconnect EPS motor harness connector.
3. Check resistance between EPS motor connector terminals.
Is the inspection result normal?
DTC
Display item
Malfunction detected condition
Possible cause
C1606
EPS MOTOR
When the motor driver malfunction of EPS control
unit or EPS motor malfunction is detected.
• Harness or connector
• EPS motor
• EPS control unit
EPS motor
Resistance (Approx.)
Terminal
19
20
0.1
Ω or less
STC-24
< DTC/CIRCUIT DIAGNOSIS >
C1606 EPS MOTOR
YES
>> Inspection End.
NO
>> EPS motor is malfunctioning. Replace steering column assembly. Refer to
C1607, C1608 EPS CONTROL UNIT
STC-25
< DTC/CIRCUIT DIAGNOSIS >
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STC
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C1607, C1608 EPS CONTROL UNIT
DTC Logic
INFOID:0000000009578765
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 “C1607” or “C1608” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009578766
1.
PERFORM SELF-DIAGNOSIS
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Erase self-diagnosis results for “EPS”.
3. Perform “EPS” self-diagnosis.
Is DTC “C1607” or “C1608” detected?
YES
>> Replace EPS control unit. Refer to
STC-37, "Removal and Installation"
.
NO
>> Check EPS control unit pin terminals for damage or loose connection with harness connector. If
any item are damaged, repair or replace malfunctioning component.
DTC
Display item
Malfunction detected condition
Possible cause
C1607
EEPROM
When the memory (EEPROM) system malfunction is
detected in EPS control unit.
EPS control unit
C1608
CONTROL UNIT
When the internal malfunction is detected in EPS
control unit.
STC-26
< DTC/CIRCUIT DIAGNOSIS >
C1609 VEHICLE SPEED SIGNAL
C1609 VEHICLE SPEED SIGNAL
Description
INFOID:0000000009578767
EPS control unit receives the vehicle speed signal from ABS actuator and electric unit (control unit) via CAN
communication line.
DTC Logic
INFOID:0000000009578768
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 “C1609” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009578769
1.
PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform “ABS” self-diagnosis.
Is any DTC detected?
YES
>> Check the DTC.
NO
>> GO TO 2.
2.
PERFORM SELF-DIAGNOSIS
With CONSULT
Perform “EPS” self-diagnosis.
Is DTC “C1609” detected?
YES
>> Replace EPS control unit. Refer to
STC-37, "Removal and Installation"
.
NO
>> Check EPS control unit pin terminals for damage or loose connection with harness connector. If
any item are damaged, repair or replace malfunctioning component.
DTC
Display item
Malfunction detected condition
Possible cause
C1609
CAN VHCL SPEED
• Malfunction is detected in vehicle speed signal that
is output from ABS actuator and electric unit (con-
trol unit) via CAN communication.
• ABS actuator and electric unit (control unit) input
signal error is detected.
• Harness or connector
• CAN communication line
• EPS control unit
• ABS malfunction
- Vehicle speed signal error
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