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TEST ACTION APPLICABILITY 1 NOTE: Diagnose any TP Sensor or MAP Sensor component DTCs before t, read DTCs and record the related Freeze Frame data. Is the Good Trip Counter displayed and equal to zero? All Yes → Go To 2 No → Refer to the INTERMITTENT CONDITION symptom in the Driveability category. 2 NOTE: This code is intended to shut down the engine if a large crack occurs All Yes → Repair the vacuum leak as necessary. Perform POWERTRAIN VERIFICATION TEST VER - 5. No → Go To 3 3 Start the engine. t, monitor the MAP Sensor voltage. Snap the throttle from wide open throttle to idle several times. All Yes → Go To 4 No → Go To 12 4 Ignition on, engine not running. t, monitor the TP Sensor voltage while slowly depressing the throttle pedal from the idle position to the wide open throttle position. All Yes → Refer to the INTERMITTENT CONDITION symptom in the Driveability category. No → Go To 5 502 DRIVEABILITY - NGC P2074-MANIFOLD PRESSURE/THROTTLE POSITION CORRELATION - Continued |