Nissan Quest E52. Instruction — part 1184
C1602 NO TUNING SET
STC-25
< DTC/CIRCUIT DIAGNOSIS >
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STC
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2.
Turn ignition switch ON.
CAUTION:
Never start the engine.
3.
Check voltage between power steering control module harness connector terminals and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK POWER STEERING CONTROL MODULE POWER SUPPLY CIRCUIT (2)
1.
Turn ignition switch OFF.
2.
Check the 100A fusible link (#D).
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for battery power supply circuit. Refer to
.
NO
>> Repair or replace error-detected parts.
5.
CHECK POWER STEERING CONTROL MODULE POWER SUPPLY CIRCUIT (3)
1.
Check voltage between power steering control module harness connector terminals and ground.
2.
Turn ignition switch ON.
CAUTION:
Never start the engine.
3.
Check voltage between power steering control module harness connector terminals and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
CHECK POWER STEERING CONTROL MODULE POWER SUPPLY CIRCUIT (4)
1.
Turn ignition switch OFF.
2.
Check the 10A fuse (#3).
3.
Check continuity and short between power steering control module harness connector terminal and fuse
block (J/B) harness connector terminal.
4.
Check continuity between power steering control module harness connector terminal and ground.
Power steering control module
—
Voltage
(Approx.)
Connector
Terminal
E33
1
Ground
8.5 – 18.5 V
Power steering control module
—
Voltage
(Approx.)
Connector
Terminal
E33
1
Ground
8.5 – 18.5 V
Power steering control module
—
Voltage
(Approx.)
Connector
Terminal
E34
5
Ground
0 V
Power steering control module
—
Voltage
(Approx.)
Connector
Terminal
E34
5
Ground
8.5 – 18.5 V
Power steering control module
Fuse block (J/B)
Continuity
Connector
Terminal
Connector
Terminal
E34
5
E103
4F
Existed
STC-26
< DTC/CIRCUIT DIAGNOSIS >
C1602 NO TUNING SET
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for ignition power supply circuit. Refer to
.
NO
>> Repair or replace error-detected parts.
7.
CHECK SELF-DIAGNOSIS RESULTS
With CONSULT
Perform “EPS” self-diagnosis.
Is DTC “C1602” detected?
YES
>> Power steering control module is malfunctioning. Replace steering oil pump assembly. Refer to
ST-32, "Removal and Installation"
NO
>> Repair or replace error-detected parts.
Power steering control module
—
Continuity
Connector
Terminal
E34
5
Ground
Not existed
C1606 EPS MOTOR
STC-27
< DTC/CIRCUIT DIAGNOSIS >
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STC
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C1606 EPS MOTOR
DTC Logic
INFOID:0000000009650873
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:0000000009650874
1.
PERFORM SELF-DIAGNOSIS
With CONSULT
1.
Turn the ignition switch OFF to ON.
2.
Erase self-diagnostic results for “EPS”.
3.
Turn the ignition switch OFF and wait for at least 10 seconds.
4.
Perform self-diagnosis for “EPS”.
Is DTC “C1606” detected?
YES
>> Power steering motor is malfunctioning. Replace power steering oil pump assembly. Refer to
32, "Removal and Installation"
.
NO
>> Check pin terminal and connection of each harness connector for malfunctioning conditions.
DTC
Display item
Malfunction detected condition
Possible cause
C1606
EPS MOTOR
When the motor driver malfunction of power steer-
ing control module or power steering control mod-
ule motor driver malfunction is detected.
• Harness or connector
• Power steering control motor
• Power steering control mod-
ule
STC-28
< DTC/CIRCUIT DIAGNOSIS >
C1607, C1608 POWER STEERING CONTROL MODULE
C1607, C1608 POWER STEERING CONTROL MODULE
DTC Logic
INFOID:0000000009650875
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:0000000009650876
1.
PERFORM SELF-DIAGNOSIS
With CONSULT
1.
Turn the ignition switch OFF to ON.
2.
Erase self-diagnostic results for “EPS”.
3.
Turn the ignition switch OFF and wait for at least 10 seconds.
4.
Perform self-diagnosis for “EPS”.
Is DTC “C1607” or “C1608” detected?
YES
>> Power steering control module is malfunctioning. Replace power steering oil pump assembly.
ST-32, "Removal and Installation"
NO
>> Check pin terminal and connection of each harness connector for malfunctioning conditions.
DTC
Display item
Malfunction detected condition
Possible cause
C1607
EEPROM
When the memory (EEPROM) system malfunction is
detected in power steering control module.
Power steering control module
C1608
CONTROL UNIT
When the internal malfunction is detected in power
steering control module.
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