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Home >> Pontiac >> 2002 >> Firebird Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P1120: Throttle Position Sensor 1 Circuit >> Diagnostic Aids

Diagnostic Aids

When the TAC module detects a condition within the ETC system the Powertrain Control Module (PCM) receives a message across serial data, and more than 1 ETC system-related DTC may set. This condition is due to the many redundant tests run continuously on this system. Locating and repairing 1 individual condition may correct more than 1 DTC. Be aware of this condition when you review the captured DTC info.

If the condition is intermittent, see INTERMITTENT CONDITIONS  under SELF-DIAGNOSTIC SYSTEM.

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