Emission Applications

1999 Infiniti

Model, Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

G20 2.0L 4-Cyl. SFI

PCV, EVAP, TWC, FR, EGR, SPK, ⁽³⁾ HO2S, CEC, MIL
EGR-BPT, EGRC, EGR-TS, EVAP-CPCS, EVAP-CPVCV, EVAP-CSPS, EVAP-CVCV, EVAP-VC, SPK-CC

I30 3.0L V6 SFI

PCV, EVAP, ⁽⁴⁾ TWC, FR, EGR, SPK, ⁽⁵⁾ HO2S, CEC, MIL
EGR-TS, EGR-VCV, EVAP-CPCS, EVAP-CPVCV, EVAP-CSPS, EVAP-CVCV, EVAP-VC, SPK-CC

Q45 4.1L V8 SFI

PCV, EVAP, ⁽⁴⁾ TWC, FR, EGR, SPK, ⁽⁵⁾ HO2S, CEC, MIL
EGR-BPT, EGRC, EGR-TS, EVAP-CPCS, EVAP-CPVCV, EVAP-CSPS, EVAP-CVCV, EVAP-VC, SPK-CC

QX4 3.3L V6 SFI

PCV, EVAP, ⁽⁶⁾ TWC, FR, EGR, SPK, ⁽⁵⁾ HO2S, CEC, MIL
EGR-BPT, EGRC, EGR-TS, EVAP-CPVCV, EVAP-CSPS, EVAP-CVCV, EVAP-VC, SPK-CC

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See INFINITI in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Equipped with 2.

⁽⁴⁾	Each cylinder bank exhaust pipe has a TWC & one or more TWC located downstream.

⁽⁵⁾	Equipped with 4.

⁽⁶⁾	Each cylinder bank exhaust pipe has a warm-up TWC. Calif. vehicles include 2 downstream TWC (total of 4 used on Calif. vehicles; total of 2 used on Fed. vehicles).