Diagnostic Procedure
- CHECK GROUND CONNECTIONS
- Turn ignition switch OFF.
- Loosen and retighten three ground screws on the body. Refer to "GROUND INSPECTION ".
Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
OK: GO TO 2.
NG: Repair or replace ground connections.
- CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT
- Disconnect accelerator pedal position (APP) sensor harness connector.
- Turn ignition switch ON.
- Check voltage between APP sensor terminal 2 and ground with CONSULT-II or tester.
Voltage: Approximately 5V
Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
OK: GO TO 5.
NG: GO TO 3.
- CHECK SENSOR POWER SUPPLY CIRCUITS
Check the following.
- Harness for short to power and short to ground, between the following terminals.
ECM TERMINAL REFERENCEECM terminal Sensor terminal Reference Wiring Diagram 48 EVAP control system pressure sensor terminal 3 WIRING DIAGRAM 49 Refrigerant pressure sensor terminal 3 WIRING DIAGRAM 68 PSP sensor terminal 3 WIRING DIAGRAM 90 APP sensor terminal 6 WIRING DIAGRAM OK or NG
OK: GO TO 4.
NG: Repair short to ground or short to power in harness or connectors.
- CHECK COMPONENTS
Check the following.
- Refrigerant pressure sensor (Refer to "COMPONENT INSPECTION " (with auto A/C models), "ELECTRICAL COMPONENT INSPECTION " (with manual A/C models).)
- Power steering pressure sensor (Refer to "COMPONENT INSPECTION ".)
- EVAP control system pressure sensor (Refer to "COMPONENT INSPECTION ".)
OK or NG
OK: GO TO 7.
NG: Replace malfunctioning component.
- CHECK APP SENSOR
Refer to COMPONENT INSPECTION .
OK or NG
OK: GO TO 7.
NG: GO TO 6.
- REPLACE ACCELERATOR PEDAL ASSEMBLY
- Replace accelerator pedal assembly.
- Perform "ACCELERATOR PEDAL RELEASED POSITION LEARNING ".
- Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".
- Perform "IDLE AIR VOLUME LEARNING ".
INSPECTION END
- CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".
INSPECTION END