TEST
ACTION
APPLICABILITY
3
Inspect the throttle plate for carbon build up or other restrictions.
Verify that the throttle cable between the Accelerator Pedal and the Throttle body is
not binding.
Make sure the throttle plate is in the idle position.
Remove the IAC Motor and actuate the IAC Motor with the DRBIII
t to verify proper
operation.
Install the IAC Motor.
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
With the vehicle is running, lightly tap on IAC Motor, with your hand, and listen for
idle to raise.
Were any problems found?
All
Yes
→ Repair or replace as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 4
4
NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay
particular attention to all Power and Ground circuits.
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module per Service
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
185
DRIVEABILITY - NGC
P0506-IDLE SPEED PERFORMANCE LOWER THAN EXPECTED —
Continued