Altima 2.5 SL L4-2.5L (QR25DE) (2002)
Idle Speed/Throttle Actuator - Electronic: Customer Interest
Engine Controls - Erratic Poor Idle Quality
Classification:
EC04-002
Reference:
NTB04-015
Date:
February 03, 2004
UNABLE TO MAINTAIN IDLE OR LOW/ROUGH IDLE AT START
APPLIED VEHICLES:
2002-03 Sentra (B15)
2002-03 Altima (L31)
APPLIED ENGINE:
QR25DE
IF YOU CONFIRM:
An applied vehicle has the following symptoms:
^
Engine RPM rises at start and then drops and cannot maintain idle
OR
^
Engine has low/rough idle
AND
^
Engine runs well if the throttle is held open
NOTE:
The above symptoms may occur after an ECM reprogram or the vehicle battery was run down (discharged).
ACTIONS:
^
Conduct the "Engine Running and Warm Up" procedure
^
Perform the "Idle Air Volume Learning (IAVL)" procedure
^
If the IAVL does not finish ("CMPLT"), perform the "Corrected Idle RPM Check". Then, perform the IAVL procedure again.
^
Refer to the Service Procedure for details
IMPORTANT:
The purpose of "ACTIONS" (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire Service
Procedure as it contains information that is essential to successfully completing this repair.
CLAIMS INFORMATION
SERVICE PROCEDURE
Engine Running and Warm Up
1.
If the engine is able to maintain an idle, but is rough or low, then move to step 4.