2005 INFINITI FX35 Service Manual

Page 1945 of 4731

INFINITI FX35 2005  Service Manual EC-552
[VQ35DE]
DTC P1279, P1289 A/F SENSOR 1
Revision: 2005 July 2005 FX
Specification data are reference values and are measured between each terminal and ground. 
CAUTION: 
Do not use ECM ground te

Page 1946 of 4731

INFINITI FX35 2005  Service Manual DTC P1279, P1289 A/F SENSOR 1 EC-553
[VQ35DE]
C 
D  E 
F 
G  H 
I 
J 
K  L 
M  A
EC 
Revision: 2005 July  2005 FX
BANK 2
TBWM0391E

Page 1947 of 4731

INFINITI FX35 2005  Service Manual EC-554
[VQ35DE]
DTC P1279, P1289 A/F SENSOR 1
Revision: 2005 July 2005 FX
Specification data are reference values and are measured between each terminal and ground. 
CAUTION: 
Do not use ECM ground te

Page 1948 of 4731

INFINITI FX35 2005  Service Manual DTC P1279, P1289 A/F SENSOR 1 EC-555
[VQ35DE]
C 
D  E 
F 
G  H 
I 
J 
K  L 
M  A
EC 
Revision: 2005 July  2005 FX
3. CHECK EXHAUST GAS LEAK 
1. Start engine and run it at idle. 
2. Listen for an exhau

Page 1949 of 4731

INFINITI FX35 2005  Service Manual EC-556
[VQ35DE]
DTC P1279, P1289 A/F SENSOR 1
Revision: 2005 July 2005 FX
5. CLEAR THE SELF-LEARNING DATA 
   With CONSULT-II 
1. Start engine and warm it up to normal operating temperature. 
2. Selec

Page 1950 of 4731

INFINITI FX35 2005  Service Manual DTC P1279, P1289 A/F SENSOR 1 EC-557
[VQ35DE]
C 
D  E 
F 
G  H 
I 
J 
K  L 
M  A
EC 
Revision: 2005 July  2005 FX
6. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT 
1. Turn ignition switch O

Page 1951 of 4731

INFINITI FX35 2005  Service Manual EC-558
[VQ35DE]
DTC P1279, P1289 A/F SENSOR 1
Revision: 2005 July 2005 FX
8. CHECK AIR FUEL RATIO (A/F) SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 
1. Turn ignition switch OFF. 
2. Disconnect EC

Page 1952 of 4731

INFINITI FX35 2005  Service Manual DTC P1279, P1289 A/F SENSOR 1 EC-559
[VQ35DE]
C 
D  E 
F 
G  H 
I 
J 
K  L 
M  A
EC 
Revision: 2005 July  2005 FX
11 .  CHECK PCV VALVE 
Refer to   EC-51, "
POSITIVE CRANKCASE VENTILATION" . 
OK or NG