nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Perform If Idle Is Out of Specification|Page 7676 > < Perform If Idle Is Out of Specification|Page 7674
Page 3
background image

the cause of the incident by referring to the DIAGNOSTIC PROCEDURE.

DIAGNOSTIC PROCEDURE

If idle air volume learning cannot be performed successfully, proceed as follows:

1. Check that throttle valve is fully closed.
2. Check PCV valve operation.
3. Check that downstream of throttle valve is free from air leakage.
4. When the above three items check out OK, engine component parts and their installation condition are questionable. Check and eliminate the

cause of the incident.
It is useful to perform "TROUBLE DIAGNOSIS - SPECIFICATION VALUE".  See: Computers and Control Systems/Testing and
Inspection/Monitors, Trips, Drive Cycles and Readiness Codes/Specification (SP) Value

5. If any of the following conditions occur after the engine has started, eliminate the cause of the incident and perform "Idle air volume learning" all

over again:
-

Engine stalls.

-

Erroneous idle.

Perform If Idle Is Out of Specification|Page 7676 > < Perform If Idle Is Out of Specification|Page 7674