Nissan X-Trail 32. Instruction — part 1995
STC-30
< DTC/CIRCUIT DIAGNOSIS >
C1604 TORQUE SENSOR
C1604 TORQUE SENSOR
DTC Description
INFOID:0000000010688418
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connector
• Torque sensor
• EPS control unit (steering column assembly)
FAIL-SAFE
EPS system enters into a instruction steering state.
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/DAST 3” self-diagnosis.
Is DTC “C1604” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010688419
1.
CHECK TERMINALS AND HARNESS CONNECTORS
Check EPS control unit (steering column assembly) pin terminals for damage or loose connection with har-
ness connector.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning parts.
2.
PERFORM SELF-DIAGNOSIS
With CONSULT
1.
Turn the ignition switch OFF to ON.
2.
Erase self-diagnostic results for “EPS/DAST 3”.
3.
Turn the ignition switch OFF, and then wait 10 seconds and more.
4.
Perform self-diagnosis for “EPS/DAST 3”.
Is DTC “C1604” detected?
YES
>> Replace steering column assembly. Refer to
ST-13, "Removal and Installation"
NO
>> Check pin terminal and connection of each harness connector for malfunctioning conditions.
DTC
Display item
(Trouble diagnosis content)
Malfunction detected condition
C1604
TORQUE SENSOR
(Torque sensor)
When torque sensor output signal is malfunctioning.
C1606 EPS MOTOR
STC-31
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
H
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K
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M
A
B
STC
N
O
P
C1606 EPS MOTOR
DTC Description
INFOID:0000000010688420
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connector
• EPS motor (steering column assembly)
• EPS control unit (steering column assembly)
FAIL-SAFE
EPS system enters into a instruction steering state.
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/DAST 3” self-diagnosis.
Is DTC “C1606” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
NO-2
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010688421
1.
CHECK TERMINALS AND HARNESS CONNECTORS
Check EPS control unit (steering column assembly) pin terminals for damage or loose connection with har-
ness connector.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning parts.
2.
PERFORM SELF-DIAGNOSIS
With CONSULT
1.
Turn the ignition switch OFF to ON.
2.
Erase self-diagnostic results for “EPS/DAST 3”.
3.
Turn the ignition switch OFF, and then wait 10 seconds and more.
4.
Perform self-diagnosis for “EPS/DAST 3”.
Is DTC “C1606” detected?
YES
>> Replace steering column assembly. Refer to
ST-13, "Removal and Installation"
NO
>> Check pin terminal and connection of each harness connector for malfunctioning conditions.
DTC
Display item
(Trouble diagnosis content)
Malfunction detected condition
C1606
EPS MOTOR
(EPS motor)
When the motor driver malfunction of EPS control unit or EPS motor
malfunction is detected.
STC-32
< DTC/CIRCUIT DIAGNOSIS >
C1607, C1608 EPS CONTROL UNIT
C1607, C1608 EPS CONTROL UNIT
DTC Description
INFOID:0000000010688422
DTC DETECTION LOGIC
POSSIBLE CAUSE
EPS control unit (steering column assembly)
FAIL-SAFE
EPS system enters into a instruction steering state.
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/DAST 3” self-diagnosis.
Is DTC “C1607” or “C1608” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010688423
1.
CHECK TERMINALS AND HARNESS CONNECTORS
Check EPS control unit (steering column assembly) pin terminals for damage or loose connection with har-
ness connector.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
PERFORM SELF-DIAGNOSIS
With CONSULT
1.
Turn the ignition switch OFF to ON.
2.
Erase self-diagnostic results for “EPS/DAST 3”.
3.
Turn the ignition switch OFF, and then wait 10 seconds and more.
4.
Perform self-diagnosis for “EPS/DAST 3”.
Is DTC “C1607” or “C1608” detected?
YES
>> Replace steering column assembly. Refer to
ST-13, "Removal and Installation"
NO
>> Check pin terminal and connection of each harness connector for malfunctioning conditions.
DTC
Display item
(Trouble diagnosis content)
Malfunction detected condition
C1607
EEPROM
(EEPROM)
When the memory (EEPROM) system malfunction is detected in EPS
control unit.
C1608
CONTROL UNIT
(EPS control unit)
When the internal malfunction is detected in EPS control unit.
C1609 VEHICLE SPEED SIGNAL
STC-33
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
H
I
J
K
L
M
A
B
STC
N
O
P
C1609 VEHICLE SPEED SIGNAL
DTC Description
INFOID:0000000010688424
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connector
(CAN communication line)
• EPS control unit (steering column assembly)
• ABS malfunction
• Vehicle speed signal error
FAIL-SAFE
EPS system enters into a constant steering assist level state.
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/DAST 3” self-diagnosis.
Is DTC “C1609” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
NO-2
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010688425
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. Refer to
.
NO
>> GO TO 2.
2.
PERFORM SELF-DIAGNOSIS
With CONSULT
1.
Turn the ignition switch OFF to ON.
2.
Erase self-diagnostic results for “EPS/DAST 3”.
3.
Turn the ignition switch OFF, and then wait 10 seconds and more.
4.
Perform self-diagnosis for “EPS/DAST 3”.
Is DTC “C1609” detected?
YES
>> Replace steering column assembly. Refer to
ST-13, "Removal and Installation"
NO
>> Check pin terminal and connection of each harness connector for malfunctioning conditions.
DTC
Display item
(Trouble diagnosis content)
Malfunction detected condition
C1609
CAN VHCL SPEED
(CAN vehicle speed signal)
• A malfunction is detected in the vehicle speed signal received with
CAN communication.
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