Engine Controls - System & Component Testing: Diagnosis

Engine Controls - System & Component Testing: Diagnosis Nissan 350Z I

VIAS System & Component Testing (Murano)

For VIAS system diagnostic procedure (Scheme 10)- (Scheme 13).

For engine control system component locations see scheme 319- see scheme 324. For ECM location, connector and terminal view (Scheme 14) To identify circuits referenced in testing, see ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.

For removal and installation of components, see appropriate REMOVAL & INSTALLATION article.

Scheme 10

Scheme 10: VIAS System & Component Testing (Murano)

Scheme 11

Scheme 12

Scheme 13

Scheme 14

VIAS System & Component Testing (Pathfinder)

For VIAS system diagnostic procedure (Scheme 15)- (Scheme 23).

For engine control system component locations see scheme 325- see scheme 329. For ECM location, connector and terminal view (Scheme 24) To identify circuits referenced in testing, see ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. For removal and installation of components, see appropriate REMOVAL & INSTALLATION article.

Scheme 15

Scheme 15: VIAS System & Component Testing (Pathfinder)

Scheme 16

Scheme 17

Scheme 18

Scheme 19

Scheme 20

Scheme 21

Scheme 22

Scheme 23

Scheme 24

EVAP System Leak Test

CAUTION

DO NOT apply more than 0.6 psi (0.04 kg/cm 2 ) of pressure to EVAP system. DO NOT use compressed air.

Note. DO NOT start engine during testing procedure.

Using CONSULT-II Attach EVAP service port adapter securely to EVAP service port. Attach pressure pump and hose. Turn ignition on. Using CONSULT-II in WORK SUPPORT MODE select EVAP SYSTEM CLOSE. Touch START. A bar graph should appear, using pressure pump apply pressure until pressure indicator reaches middle of graph. Remove EVAP service port adapter along with pump. Locate leak using Leak Detector (J41416).
Without CONSULT-II Connect suitable pressure pump with gauge to EVAP service port. See «VACUUM DIAGRAMS»(ref-151941) article for location. Using jumper wires, apply battery voltage to EVAP Canister Vent Control Valve (EVAP-CVCV) and vacuum cut valve by-pass valve. (Scheme 25)- (Scheme 32). Apply 0.2-0.4 psi (0.01-0.03 kg/cm 2 ) of pressure to EVAP service port. Remove pressure pump from EVAP service port. Using Leak Detector (J41416), locate EVAP system leak.