Component Inspection

P0451 Evaporative Emission System Pressure Sensor/Switch Range/Performance

Inspection/Repair - Component Inspection

Component Inspection

1. Check FTPS
(1) Key "ON".
(2) Disassemble FTPS. (Don't disconnect FTPS connector.)
(3) Connect the vacuum gauge.
(4) Measure the output voltage with using the vacuum gauge.

CAUTION:
Be careful while you do this procedure. FTPS would be damaged if you apply vacuum excessively.

A. Specification :









(5) Is the measured voltage within specification?
YES
1) Substitute with a known-good PCM and check for proper operation. If the problem is corrected, replace PCM and then go to "Verification of Vehicle Repair" procedure.
NO
1) Substitute with a known-good FTPS and check for proper operation. If the problem is corrected, replace FTPS and then go to "Verification of Vehicle Repair" procedure.