P0121

Tests 1 - 2:

Tests 3 - 6:

Tests 7 - 9:

SYMPTOM
P0121 - TPS VOLTAGE DOES NOT AGREE WITH MAP

WHEN MONITORED
With the engine running and no MAP sensor or TPS trouble codes.

SET CONDITION
Engine speed must be greater than 1600 rpm for all TPS testing.

POSSIBLE CAUSES
- MAP sensor trouble code present
- Throttle position sensor connector observable defect
- TPS 5 volt supply circuit open
- TPS harness or connectors intermittent defect
- TPS voltage change not smooth
- TPS voltage above 1.0 volt
- TPS voltage above 3.5 volts