DTC Logic
DTC DETECTION LOGIC
NOTE:
If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-353, "DTC Logic".
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition | Possible cause |
P2122 | APP SEN 1/CIRC (Throttle/Pedal position sensor/switch “D” circuit low) | An excessively low voltage from the APP sensor 1 is sent to ECM. |
|
P2123 | APP SEN 1/CIRC (Throttle/Pedal position sensor/switch “D” circuit high) | An excessively high voltage from the APP sensor 1 is sent to ECM. |
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
Is DTC detected? YES >> Proceed to EC-432, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK APP SENSOR 1 POWER SUPPLY
Is the inspection result normal? YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
3.CHECK APP SENSOR 1 GROUND CIRCUIT
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair or replace error-detected parts.
4.CHECK APP SENSOR 1 INPUT SIGNAL CIRCUIT
Is the inspection result normal? YES >> GO TO 5.
NO >> Repair or replace error-detected parts.
5.CHECK APP SENSOR
Check APP sensor. Refer to EC-433, "Component Inspection (APP Sensor)".
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> Replace accelerator pedal assembly. Refer to ACC-3, "Removal and Installation".
Component Inspection (APP Sensor)
1.CHECK ACCELERATOR PEDAL POSITION SENSOR
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace accelerator pedal assembly. Refer to ACC-3, "Removal and Installation".
Fuel pump
Component Function Check
1.CHECK FUEL PUMP FUNCTION
Turn ignition switch ON.
Pinch fuel feed hose with
two fingers.
Fuel pressure pulsation should be felt on the fuel feed
hose for 1 second after ignition switch is turned ON.
Is the inspection result normal?
YES >> INSPECT ...
Brake pedal
Inspection
BRAKE PEDAL HEIGHT
Check the brake pedal height (H1) between the dash lower panel (1)
and the brake pedal upper surface.
Brake pedal height (H1) : Refer to BR-54, "Brake Pedal".
CAUTION:
Check the brake pedal height with the floor trim removed.
STOP LAMP SWITCH AND BR ...
Exterior front
Engine hood
Windshield wiper and washer switch,
Windshield
Moonroof (if so equipped)
Power windows
Door locks, keyfob, keys, NISSAN
Intelligent Key® (if so equipped)
Mirrors
Tire pressure
Flat tire
Tire chains
Replacing bulbs
Headlight and turn signal switch, LED
he ...