Nissan Altima 2007-2012 Service Manual: Symptom diagnosis
Ecu diagnosis
ECM
Reference Value
VALUES ON THE DIAGNOSIS TOOL
Remarks:
● Specification data are reference values.
● Specification data are output/input values
which are detected or supplied b ...
Engine control system symptoms
Symptom Table
SYSTEM — BASIC ENGINE CONTROL SYSTEM
1 - 6: The numbers refer to the order of inspection.
(continued on next table)
SYSTEM — ENGINE MECHANICAL & OTHER
1 - 6: The n ...
Other materials:
P0442 evap control system
DTC Logic
DTC DETECTION LOGIC
NOTE:
If DTC P0442 is displayed with DTC P0456, first perform the trouble diagnosis
for DTC P0456. Refer to
EC-841, "DTC Logic".
This diagnosis detects leaks in the EVAP purge line using engine intake manifold
vacuum.
If pressure does not increa ...
P2138 APP sensor
Description
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelerator
position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometer which tran ...
Clearing the programmed information
The following procedure clears the programmed
information from both buttons. Individual buttons
cannot be cleared. However, individual buttons
can be reprogrammed. See “Reprogramming a
single HomeLink® button” in this section.
To clear all programming:
1. Press and hold the two outer Ho ...