Nissan Skyline R34 workshop service manual page 34

text version of content this owner's manual page from owners manual to the vehicle Nissan Skyline, year of production 1998 - 2002:

TROUBLE DIAGNOSES CONSULT (Cont'd) -- FUNCTION TEST CONDITION JUDGEMENT CHECK ITEM (REMEDY) - ITEM Ignition switch: ON (Engine running) Locked position ON Harness and connector GO PWIST SIGNAL Power steering oil pressure switch Power steering oil pressure switch CIRCUIT circuit is tested when steering a Power steering oil pump wheel is rotated fully and then set Neutral position OFF to a straight line running position. I VlAS SN CIRCUIT The variable air intake system is 0 RB20DE (UB), diagnosed by checking for opera- RB25DE tion of the actuator. - The air jet swirl control system is SWRL CONT SN CIRCUIT diagnosed by checking for opera- 0 RB20DE (UB) tion of the actuator. -- -- - a Vehicle speed sensor circuit is Vehicle speed sensor input Harness and connector 877 VEHICLE SPEED tested when vehicle is running at signal is greater than 4 krnlh Vehicle speed sensor SEN CKT a speed of 10 km/h (6 MPH) or (2 MPH). Speedometer higher. RS After warming up, idle the engine. Adjust ignition timing (by moving Ignition timing is checked by read- The timing light indicates the camshaft position sensor or dis- IGN TIMING ADJ ing ignition timing with a timing same value on the screen. tributor) HA light and checking whether it Camshaft position sensor drive agrees with specifications. mechanism la INJECTION SYS (Injector, fuel pressure regulator, harness or Air-fuel ratio feedback circuit connector) (injection system, ignition system, IGNITION SYS (Spark plug, igni- MIXTURE RATIO vacuum system, etc.) is tested by Oxygen sensor COUNT More tion coil, power transistor harness TEST examining the oxygen sensor out- than 5 times during 10 sec- or connector) put at 2,000 rpm under non- onds VACUUM SYS (Intake air leaks) loaded state. Oxygen sensor circuit Oxygen sensor operation Fuel pressure high or low Mass air flow sensor - -- / After warming up, idle the engine. Injector operation of each cylinder Injector circuit (Injector, harness or is stopped one after another, and Difference in engine speed is connector) resultant change in engine rotation greater than 25 rpm before Ignition circuit (Spark plug, ignition POWER BALANCE is examined to evaluate combus- and after cutting off the injec- coil, power transistor harness or tion of each cylinder. (This is only tor of each cylinder. connector) displayed for models where a Compression sequential multipart fuel injection Valve timing system is used.) D After warming up, idle the engine. Harness and connector D IACV-AAC valve system is tested Difference in engine speed is IACV-AAC valve IACV-AACN by detecting change in engine greater than 150 rpm between Air passage restriction between air SYSTEM speed when IACV-AAC valve when valve opening is at 80% inlet and IACV-AAC valve opening is changed to 0%, 20% and at 20%. IAS (Idle adjusting screw) adjust- and 80%. ment ECM PART NUMBER Part number of the ECM equipped on the vehicle can be read. ECM: 2371 0-XXXXX ECM-TCM: 23740-XXXXX

owners manual Nissan Skyline

owners manual Nissan Skyline - year of production: 1998, 1999, 2000, 2001, 2002 - Nissan Skyline R34 workshop service manual EN