LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2004 >> Prius >> Repair and Diagnosis >> Engine Performance >> Specifications >> Emission Control System (Service Specifications) >> Service Data
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Service Data

Emission Control Service Data Specification

Air-fuel ratio sensor    
Voltage E5-23 (A1A+) - E5-28 (E1) 3.0 to 3.6 V
  E5-22 (A1A-) - E5-28 (E1) 2.7 to 3.3 V
Resistance 1 (HT) - 2 (+B) 1.8 to 3.9 Ω at 20°C (68°F)
  2 (+B) - 4 (AF-) 10 kΩ or higher
Vapor pressure sensor    
Voltage 1 - 3 4.5 to 5.5 V
  2 - 3 3.0 to 3.6 V
Vacuum switching valve assy No. 2    
Resistance 1 - 2 26 to 30 Ω at 20°C (68°F)
Charcoal canister vacuum switching valve    
Resistance 1 - 2 36 to 42 Ω at 20°C (68°F)
Trap w/ outlet valve canister assy    
Resistance (VSV for CCV (canister closed valve)) 1 - 2 25 to 30 Ω at 20°C (68°F)
    32 to 40 Ω at 100°C (212°F)
Heated oxygen sensor    
Resistance 1 (HT) - 2 (+B) 11 to 16 Ω at 20°C (68°F)
  1 (HT) - 4 (E) 10 kΩ or higher