Nissan Quest E52. Instruction — part 1183
C1601 BATTERY POWER SUPPLY
STC-21
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
H
I
J
K
L
M
A
B
STC
N
O
P
C1601 BATTERY POWER SUPPLY
DTC Logic
INFOID:0000000009650871
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:0000000009650872
1.
CHECK POWER STEERING CONTROL MODULE GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect power steering control module harness connector.
3.
Check continuity between power steering control module harness connector terminal and ground.
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, and repair or
replace error-detected parts.
2.
CHECK POWER STEERING CONTROL MODULE POWER SUPPLY CIRCUIT (1)
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.
DTC
Display item
Malfunction detected condition
Possible cause
C1601
BATTERY VOLT
When a power supply voltage to the power steer-
ing control module is maintained at 18.5 V or more
or at less than 8.5 V continuously for 0.5 seconds
or more.
• Harness or connector
• Power steering control mod-
ule
• Fuse
• Battery power supply circuit
• Battery
Power steering control module
—
Continuity
Connector
Terminal
E33
2
Ground
Existed
Power steering control module
—
Voltage
(Approx.)
Connector
Terminal
E33
1
Ground
8.5 – 18.5 V
STC-22
< DTC/CIRCUIT DIAGNOSIS >
C1601 BATTERY POWER SUPPLY
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK POWER STEERING CONTROL MODULE POWER SUPPLY CIRCUIT (2)
1.
Turn ignition switch OFF.
2.
Check the 100A fusible link (#D).
3.
Disconnect battery terminal with fusible link harness connector.
4.
Check continuity and short between power steering control module harness connector terminal and bat-
tery terminal with fusible link harness connector terminal.
5.
Check continuity between power steering control module harness connector terminal and ground.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for battery power supply circuit. Refer to
.
NO
>> Repair or replace error-detected parts.
4.
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 6.
NO
>> GO TO 5.
5.
CHECK POWER STEERING CONTROL MODULE POWER SUPPLY CIRCUIT (4)
1.
Turn ignition switch OFF.
2.
Check the 10A fuse block (#3).
3.
Check continuity and short between power steering control module harness connector terminal and fuse
block harness connector terminal.
Power steering control module
—
Voltage
(Approx.)
Connector
Terminal
E33
1
Ground
8.5 – 18.5 V
Power steering control module
Battery terminal with fusible link
Continuity
Connector
Terminal
Connector
Terminal
E33
1
E1
3
Existed
Power steering control module
—
Continuity
Connector
Terminal
E33
1
Ground
Not existed
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
C1601 BATTERY POWER SUPPLY
STC-23
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
H
I
J
K
L
M
A
B
STC
N
O
P
4.
Check continuity between power steering control module harness connector terminal and ground.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for ignition power supply circuit. Refer to
NO
>> Repair or replace error-detected parts.
6.
CHECK TERMINALS AND HARNESS CONNECTORS
Check the power steering control module pin terminals for damage or loose connection with harness connec-
tor.
Is the inspection result normal?
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
Fuse block (J/B)
Continuity
Connector
Terminal
Connector
Terminal
E34
5
E103
4F
Existed
Power steering control module
—
Continuity
Connector
Terminal
E34
5
Ground
Not existed
STC-24
< DTC/CIRCUIT DIAGNOSIS >
C1602 NO TUNING SET
C1602 NO TUNING SET
DTC Logic
INFOID:0000000011210020
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 “C1602” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000011210021
1.
CHECK TERMINALS AND HARNESS CONNECTORS
1.
Turn ignition switch OFF.
2.
Check the power steering control module harness connector for disconnection or looseness.
3.
Disconnect power steering control module harness connector and then check the power steering control
module pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.GO TO 2.
2.
CHECK POWER STEERING CONTROL MODULE GROUND CIRCUIT
Check continuity between power steering control module harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors, and repair or
replace error-detected parts.
3.
CHECK POWER STEERING CONTROL MODULE POWER SUPPLY CIRCUIT (1)
1.
Check voltage between power steering control module harness connector terminals and ground.
DTC
Display Item
Malfunction detected condition
Possible cause
C1602
NO TURNING SET
When the information in power steering control module is not
the same.
• Harness or connector
• Power steering control module
• Battery power supply circuit
• Ignition power supply circuit
• Battery
• Fuse
• Ground circuit
Power steering control module
—
Continuity
Connector
Terminal
E33
2
Ground
Existed
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