Nissan Altima 2007-2012 Service Manual: On-vehicle repair
ACCELERATOR CONTROL SYSTEM
Exploded View
1. Accelerator pedal and accelerator position sensor assembly.
2. Locating pins
Removal and Installation
REMOVAL
1. Disconnect the battery negative terminal.
2. Disconnect the accelerator position sensor electrical connector.
3. Remove the three accelerator pedal nuts.
4. Remove the accelerator pedal and accelerator position sensor assembly.
• For electrical inspection of the accelerator pedal position sensor. Refer to EC-429, "Component Inspection" (QR25DE for California), EC-938, "Component Inspection" (QR25DE Except for Calfornia), EC- 1461, "Component Inspection" (VQ35DE).
CAUTION: • Do not disassemble the pedal assembly. Do not remove the accelerator pedal position sensor from the pedal assembly.
• Avoid impact from dropping during handling.
• Keep the pedal assembly away from water.
INSTALLATION
Installation is in the reverse order of removal.
• Align and install accelerator pedal and accelerator position sensor assembly with locating pins in locating pin holes.
• Check the accelerator pedal for smooth operation. There should be no binding or sticking when applying or releasing the accelerator pedal.
• Check that the accelerator pedal moves through the full specified distance of pedal travel.
CAUTION: When the harness connector of the accelerator pedal position sensor is disconnected, perform the “Accelerator pedal released position learning”. Refer to EC-29, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Requirement" (QR25DE for California), EC-565, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Requirement" (QR25DE except for California), EC-1053, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Requirement" (VQ35DE).
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 ...
Service data and specifications
(SDS)
Accelerator Control
PEDAL TRAVEL
...
Other materials:
P0300, P0301, P0302, P0303, P0304 misfire
DTC Logic
DTC DETECTION LOGIC
When a misfire occurs, engine speed will fluctuate. If the engine speed
fluctuates enough to cause the crankshaft
position (CKP) sensor (POS) signal to vary, ECM can determine that a misfire is
occurring.
The misfire detection logic consists of the following ...
On-vehicle maintenance
ENGINE COOLANT
System Inspection
WARNING:
• Never remove the radiator cap when the engine is hot. Serious burns could
occur from high pressure
coolant escaping from the radiator.
• Wrap a thick cloth around the cap. Slowly push down and turn it a quarter turn
to allow built-up pressur ...
Ignition timing
Description
This describes how to check the ignition timing. For the actual procedure,
follow the instructions in “BASIC
INSPECTION”.
IGNITION TIMING : Special Repair Requirement
1.CHECK IGNITION TIMING
1. Attach timing light to No. 1 igniton coil (1) wire as shown.
2. Check ignitio ...