2004 INFINITI QX56 Factory Service Manual

Page 1225 of 3371

INFINITI QX56 2004  Factory Service Manual EC-34Revision: August 2007
BASIC SERVICE PROCEDURE
2004 QX56
OVERALL INSPECTION SEQUENCE
PBIB2061E

Page 1226 of 3371

INFINITI QX56 2004  Factory Service Manual BASIC SERVICE PROCEDURE
EC-35
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: August 20072004 QX56
INSPECTION PROCEDURE
1. INSPECTION START
1. Check service records for any recent repairs that may indicate a rela

Page 1227 of 3371

INFINITI QX56 2004  Factory Service Manual EC-36Revision: August 2007
BASIC SERVICE PROCEDURE
2004 QX56
3. CHECK TARGET IDLE SPEED
 With CONSULT-II
1. Run engine at about 2,000 rpm for about 2 minutes under no load.
2. Rev engine (2,000 to 3,0

Page 1228 of 3371

INFINITI QX56 2004  Factory Service Manual BASIC SERVICE PROCEDURE
EC-37
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: August 20072004 QX56
6. PERFORM IDLE AIR VOLUME LEARNING
Perform EC-44, "
Idle Air Volume Learning"  .
Is Idle Air Volume Learning car

Page 1229 of 3371

INFINITI QX56 2004  Factory Service Manual EC-38Revision: August 2007
BASIC SERVICE PROCEDURE
2004 QX56
10. CHECK IGNITION TIMING
1. Run engine at idle.
2. Check ignition timing with a timing light.
OK or NG
OK (With CONSULT-II)>>GO TO 19.
OK

Page 1230 of 3371

INFINITI QX56 2004  Factory Service Manual BASIC SERVICE PROCEDURE
EC-39
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: August 20072004 QX56
15. CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light.
OK or NG
OK

Page 1231 of 3371

INFINITI QX56 2004  Factory Service Manual EC-40Revision: August 2007
BASIC SERVICE PROCEDURE
2004 QX56
19. CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
 With CONSULT-II
1. Turn ignition switch OFF and wait at a least 10 seconds.
2.  Start eng

Page 1232 of 3371

INFINITI QX56 2004  Factory Service Manual BASIC SERVICE PROCEDURE
EC-41
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: August 20072004 QX56
21. CHECK AIR FUEL RATIO (A/F) SENSOR 1 HARNESS
1. Turn ignition switch OFF and disconnect battery ground cable.