System Test
Start engine, and warm to operating temperature. Check idle speed. If idle speed is excessive, disconnect IAC valve harness connector. Idle speed should drop. If idle speed does not drop, check IAC valve and related circuits. See DTC P0505: IDLE AIR CONTROL (IAC) in appropriate TESTS W/CODES article.
IDLE SPEED SYSTEM INPUT SIGNALS
| Application | Model Usage | ||
|---|---|---|---|
| A/C Clutch Signal | (1) J30 | ||
| Battery Voltage | J30 | ||
| Closed Throttle Position Switch | J30 | ||
| Crankshaft Position Sensor | J30 | ||
| Engine Coolant Temperature | J30 | ||
| Ignition (START) Signal | J30 | ||
| Park/Neutral Switch | J30 | ||
| Power Steering Pressure Switch | J30 | ||
| Throttle Position Sensor | J30 | ||
| Vehicle Speed Sensor | J30 | ||
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