DTC Logic
DTC DETECTION LOGIC
DTC |
Display item |
Malfunction detected condition |
Possible cause |
C1601 | BATTERY VOLT | When a power supply voltage to the EPS control unit is maintained at 18.2 V or more or at less than 9 V continuously for five second or more. |
|
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
Is DTC “C1601” detected? YES >> Proceed to diagnosis procedure. Refer to STC-20, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis Procedure
Regarding Wiring Diagram information, refer to STC-14, "Wiring Diagram".
1.CHECK EPS CONTROL UNIT GROUND CIRCUIT
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 terminals and ground.
CAUTION: Never start the engine.
Is the inspection result normal? YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK EPS CONTROL UNIT POWER SUPPLY CIRCUIT (2)
Is the inspection result normal? YES >> Perform the trouble diagnosis for ignition power supply circuit. Refer to PG-4, "Wiring Diagram — Battery Power Supply —".
NO >> Repair or replace malfunctioning parts.
4.CHECK EPS CONTROL UNIT POWER SUPPLY CIRCUIT (3)
CAUTION: Never start the engine.
Is the inspection result normal? YES >> GO TO 6.
NO >> GO TO 5.
5.CHECK EPS CONTROL UNIT POWER SUPPLY CIRCUIT (4)
Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit. Refer to PG-4, "Wiring Diagram — Battery Power Supply —".
NO >> Repair or replace malfunctioning parts.
6.CHECK TERMINALS AND HARNESS CONNECTORS
Check the EPS control unit pin terminals for damage or loose connection with harness connector.
Is the inspection result normal? YES >> EPS control unit is malfunctioning. Replace steering column assembly. Refer to STC-36, "Removal and Installation".
NO >> Repair or replace malfunctioning parts.
Precaution
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT
PRE-TENSIONER"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”,
used along
with a front seat belt, helps to reduce the risk or severity of injury to the
...
Indicator lights
For additional information on warnings and indicators,
refer to “Vehicle information display” in
this section.
All-Wheel Drive
(AWD) AUTO indicator light (if so equipped)
When the ignition switch is in the “ON” position,
the All-Wheel Drive (AWD) AUTO indicator light
illuminates.
...
Wiring diagram
ENGINE START FUNCTION
Wiring Diagram
NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS
Wiring Diagram
VEHICLE SECURITY SYSTEM
Wiring Diagram
...