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Home >> Nissan-Datsun >> 1998 >> Sentra Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 18 (Engine Controls - System/Component Tests) >> Idle Control System >> System Test
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System Test

WARNING: This page is about a different car, the 1998 Infiniti Q45 and 1998 Infiniti I30. However, it is still accessible from the selected car via links, so may be relevant.

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 articles below.

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