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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 204 (Engine Controls - Self-Diagnostics - 1.8L - Ca) >> Diagnostic Tests >> DTC P0121, DTC P0122 Or DTC P0123: Throttle Position (TP) Sensor >> DTC Confirmation Test "C"

DTC Confirmation Test "C"

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Malfunction "C" is detected when PCM receives a low voltage from TP sensor under heavy-load driving conditions. Possible causes are:

Start engine and warm to normal operating temperature. Using a DVOM, backprobe PCM harness connector and measure voltage between ground and terminal No. 61 (Green wire) at PCM harness connector. See Figure . Drive vehicle under a heavy-load condition with engine speed greater than 2000 RPM and voltage at terminal No. 61 greater than 3 volts for at least 10 consecutive seconds. If first trip DTC is sets, perform DIAGNOSTIC PROCEDURE  . If first trip DTC is not set, problem may be intermittent. See TESTING PROCEDURE  .

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