TEST ACTION APPLICABILITY
1 Ignition on, engine not running.
With the DRBIIIt, read DTCs and record the related Freeze Frame data.
Is the Good Trip Counter displayed and equal to zero?
All
Yes → Go To 2
No → Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
2 Visually and Physically inspect the PCV system.
Check for the PCV valve disconnected.
Check for an incorrect PCV valve. The PCV valve must meet OEM specifications.
Damage vacuum hose.
Were any of the above condition found?
All
Yes → Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 3
3 Turn the ignition off.
Remove the IAC Motor.
Inspect the IAC Motor and passages for any obstructions or damage to motor.
Were any problems found?
All
Yes → Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 4
4 Start the engine.
Inspect the vehicle for external vacuum leaks.
Inspect the engine for internal vacuum leaks.
Were any vacuum leaks found?
All
Yes → Repair the vacuum leak as necessary.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 5
5 Inspect the Air Induction System for the following problems.
Restrictions: Dirty Air Cleaner, Foreign material trapped in the air intake tube, etc.
Leaks: Air Intake tube connection, Air Cleaner housing, etc.
Were any problems found?
All
Yes → Repair or replace as necessary.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 6
6 Inspect the throttle body plate carbon build up or other restrictions.
Inspect the throttle linkage for binding and smooth operation.
Ensure the throttle plate is resting on the stop at idle.
Were any problems found?
All
Yes → Repair or replace as necessary.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Test Complete.
191
DRIVEABILITY - NGC
P0506-IDLE SPEED LOW PERFORMANCE — Continued
To Next Page
Loading...
Need help?
General
