Chrysler PT Cruiser 2001 Service Manual Supplement page 2600

DRIVEABILITY - GAS
P0505-IDLE AIR CONTROL MOTOR CIRCUITS —
TEST
12 If there are no possible causes remaining, replace the Powertrain Control Module.
If there are no possible causes remaining, view repair.
Repair
13 Turn the ignition off.
Disconnect IAC Motor harness connector.
Disconnect the Powertrain Control Module harness connectors.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the IAC #3 Driver circuit.
Is the resistance below 5.0 ohms?
Yes → Repair the IAC #3 Driver circuit for a short to ground.
→ Go To 14
No
14 Turn the ignition off.
Disconnect the IAC Motor Connector.
Disconnect the Powertrain Control Module harness connectors.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the IAC #3 Driver circuit from the IAC Motor connector to
the PCM connector.
Is the resistance below 5.0 ohms?
Yes → Go To 15
→ Repair the IAC #3 Driver circuit for an open.
No
15 If there are no possible causes remaining, replace the Powertrain Control Module.
If there are no possible causes remaining, view repair.
Repair
16 Turn the ignition off.
Disconnect IAC Motor harness connector.
Disconnect the Powertrain Control Module harness connectors.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the IAC #2 Driver circuit.
Is the resistance below 5.0 ohms?
Yes → Repair the IAC #2 Driver circuit for a short to ground.
→ Go To 17
No
ACTION
Replace the Powertrain Control Module.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Replace the Powertrain Control Module.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Continued
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APPLICABILITY
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