DTC Description
DTC DETECTION LOGIC
| DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
| P1564 | ASCD SW (ASCD switch) |
|
POSSIBLE CAUSE
FAIL-SAFE
Not applicable
DTC CONFIRMATION PROCEDURE
1.CHECK DTC PRIORITY
If DTC P1564 is displayed with DTC P0603, P0604, P0605, P606, P0607, P060A, or P060B, first perform the trouble diagnosis for DTC P0603, P0604, P0605, P606, P0607, P060A, or P060B.
Is applicable DTC detected? YES >> Perform diagnosis of applicable. Refer to EC-93, "DTC Index".
NO >> GO TO 2.
2.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
>> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE
Is DTC detected? YES >> Proceed to EC-403, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK DTC PRIORITY
If DTC P1564 is displayed with DTC P0603, P0604, P0605, P606, P0607, P060A, or P060B, first perform the trouble diagnosis for DTC P0603, P0604, P0605, P606, P0607, P060A, or P060B.
Is applicable DTC detected? YES >> Perform diagnosis of applicable. Refer to EC-93, "DTC Index".
NO >> GO TO 2.
2.CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT

Without CONSULT

Is the inspection result normal? YES >> GO TO 6.
NO >> GO TO 3.
3.CHECK ASCD STEERING SWITCH GROUND CIRCUIT

Is the inspection result normal? YES >> GO TO 4.
NO >> Repair or replace error-detected parts.
4.CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT

Is the inspection result normal? YES >> GO TO 5.
NO >> Repair or replace error-detected parts.
5.CHECK ASCD STEERING SWITCH
Refer to EC-405, "Component Inspection".
Is the inspection result normal? YES >> GO TO 6.
NO >> Replace ASCD steering switch. Refer to ST-11, "Removal and Installation".
6.CHECK INTERMITTENT INCIDENT
Refer to GI-41, "Intermittent Incident".
>> INSPECTION END
Component Inspection
1.CHECK ASCD STEERING SWITCH

Is the inspection result normal? YES >> INSPECTION END
NO >> Replace ASCD steering switch. Refer to ST-11, "Exploded View".
P155D generator
P1568 signal invalidPreparation
Special Service Tool
The actual shape of the tools may differ from those illustrated here.
Tool number
(TechMate No.)
Tool name
Description
—
(J-39570)
Chassis Ear
Locating the noise
—
(J-50397)
NISSAN Squeak and Rattle Kit
...
P0420 three way catalyst function
DTC Description
DTC DETECTION LOGIC
The ECM monitors the switching frequency ratio of air fuel ratio (A/F)
sensor 1 and heated oxygen sensor 2.
A three way catalyst (manifold) with high oxygen storage capacity
will indicate a low switching frequency of heated oxygen sensor 2.
As oxygen sto ...
P2014, P2016, P2017, P2018 intake manifold runner control
valve position sensor
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P2014
IN/MANIFOLD RUNNER POS SEN B1
(Intake manifold runner position sensor/
switch circuit bank 1)
An excessively low voltage from the sensor i ...