TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the IAC Motor harness connector.
Turn the ignition on.
With the DRBIIIt, actuate the ASD Relay.
Measure the voltage of the (K60) IAC Signal circuit in the IAC Motor harness
connector.
Is the voltage above 0.5 of a volt?
All
Yes → Repair the short to voltage in the (K60) IAC Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 4
4 Turn the ignition off.
Disconnect the IAC Motor harness connector.
Turn the ignition on.
With the DRBIIIt, actuate the ASD Relay.
Measure the voltage of the (K39) IAC Motor Driver circuit in the IAC Motor harness
connector.
Is the voltage above 0.5 of a volt?
All
Yes → Repair theshort to voltagein the (K39)IAC Motor Control circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 5
5 Turn the ignition off.
Disconnect the IAC Motor harness connector.
Measure the resistance across the IAC Motor harness connector.
Is the resistance below 5.0 ohms?
All
Yes → Repair the (K60) IAC Motor Signal circuit short to the (K39) IAC
Motor Control circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 6
6 NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
202
DRIVEABILITY - NGC
P0509-IAC VALVE SENSE CIRCUIT HIGH — Continued
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