DTC Logic
DTC DETECTION LOGIC
NOTE:
1st trip DTC is erased when ignition switch OFF. And even when malfunction A is detected in two consecutive trips, DTC is not stored in ECM memory.
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition | Possible cause | |
P1572 | ASCD BRAKE SW (ASCD BRAKE SW) | A) | When the vehicle speed is above 30 km/ h (19 MPH), ON signals from the stop lamp switch and the brake pedal position switch are sent to the ECM at the same time. |
|
B) | Brake pedal position switch signal is not sent to ECM for extremely long time while the vehicle is driving. |
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
NOTE:
Procedure for malfunction B is not described here. It takes extremely long time to complete procedure for malfunction B. By performing procedure for malfunction A, the incident that causes malfunction B can be detected.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle.
If a road test is expected to be easier, it is unnecessary to lift the vehicle.
Is DTC detected? YES >> Proceed to EC-397, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle.
If a road test is expected to be easier, it is unnecessary to lift the vehicle.
Is DTC detected? YES >> Proceed to EC-397, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK OVERALL FUNCTION-1
With CONSULT
Without CONSULT
Is the inspection result normal? YES >> GO TO 2.
NO >> MT models: GO TO 3.
>> CVT models: GO TO 4.
2.CHECK OVERALL FUNCTION-2
With CONSULT
Select “BRAKE SW2” and check indication as per the following conditions.
Without CONSULT
Check the voltage between ECM harness connector terminals as per the following conditions.
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> GO TO 7.
3.CHECK CLUTCH PEDAL POSITION SWITCH POWER SUPPLY
Is the inspection result normal? YES >> GO TO 4.
NO >> Perform the trouble diagnosis for power supply circuit.
4.CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY
Is the inspection result normal? YES >> GO TO 5.
NO >> Perform the trouble diagnosis for power supply circuit.
5.CHECK BRAKE PEDAL POSITION SWITCH INPUT SIGNAL CIRCUIT
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace error-detected parts.
6.CHECK BRAKE PEDAL POSITION SWITCH
Check the brake pedal position switch. Refer to EC-394, "Component Inspection (Brake Pedal Position Switch)" Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> Replace brake pedal position switch. Refer to BR-22, "Exploded View".
7.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
Is the inspection result normal? YES >> GO TO 8.
NO >> Perform the trouble diagnosis for power supply circuit.
8.CHECK STOP LAMP SWITCH GROUND CIRCUIT
Is the inspection result normal? YES >> GO TO 9.
NO >> Repair or replace error-detected parts.
9.CHECK STOP LAMP SWITCH
Check the stop lamp switch. Refer to EC-395, "Component Inspection (Stop Lamp Switch)".
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> Replace stop lamp switch. Refer to BR-22, "Exploded View".
Component Inspection (Brake Pedal Position Switch)
1.CHECK BRAKE PEDAL POSITION SWITCH-1
Is the inspection result normal? YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK BRAKE PEDAL POSITION SWITCH-2
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace brake pedal position switch. Refer to BR-22, "Exploded View".
Component Inspection (Stop Lamp Switch)
1.CHECK STOP LAMP SWITCH-1
Is the inspection result normal? YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK STOP LAMP SWITCH-2
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace stop lamp switch. Refer to BR-22, "Exploded View".
Air conditioner system refrigerant and oil recommendations
The air conditioner system in your NISSAN
vehicle must be charged with the refrigerant
HFC-134a (R-134a) and NISSAN A/C
system oil Type S or the exact equivalents.
CAUTION
The use of any other refrigerant or oil will
cause severe damage to the air conditioning
system and will require the repl ...
P1226 TP Sensor
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P1226
CTP LEARNING-B1
(CTP LEARNING-B1)
Closed throttle position learning is not performed
successfully, repeatedly.
Electric thr ...
Brake master cylinder
Exploded View
Reservoir cap
Oil strainer
Reservoir tank
Cylinder body
Pin
O-ring
Grommet
Apply brake fluid
PBC (Poly Butyl Cuprysil)
grease or
silicone-based grease
Removal and Installation
REMOVAL
CAUTION:
Do not spill or splash brake fluid on painted surfaces. ...