2004 INFINITI QX56 Factory Service Manual

Page 1617 of 3371

INFINITI QX56 2004  Factory Service Manual EC-426Revision: August 2007
DTC P1229 SENSOR POWER SUPPLY
2004 QX56
Specification data are reference values and are measured between each terminal and ground. 
CAUTION:
Do not use ECM ground terminals

Page 1618 of 3371

INFINITI QX56 2004  Factory Service Manual DTC P1229 SENSOR POWER SUPPLY
EC-427
C
D
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F
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EC
Revision: August 20072004 QX56
2. CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness
c

Page 1619 of 3371

INFINITI QX56 2004  Factory Service Manual EC-428Revision: August 2007
DTC P1229 SENSOR POWER SUPPLY
2004 QX56
6. REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal position assembly.
2. Perform EC-44, "
Accelerator Pedal Released

Page 1620 of 3371

INFINITI QX56 2004  Factory Service Manual DTC P1271, P1281 A/F SENSOR 1
EC-429
C
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MA
EC
Revision: August 20072004 QX56
DTC P1271, P1281 A/F SENSOR 1PFP:22693
Component DescriptionUBS00H9F
The air fuel ratio (A/F) sensor 1 is

Page 1621 of 3371

INFINITI QX56 2004  Factory Service Manual EC-430Revision: August 2007
DTC P1271, P1281 A/F SENSOR 1
2004 QX56
3. Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication.
If the indication is constantly approx. 0V, go to EC-434, "
Diag-
no

Page 1622 of 3371

INFINITI QX56 2004  Factory Service Manual DTC P1271, P1281 A/F SENSOR 1
EC-431
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EC
Revision: August 20072004 QX56
Wiring DiagramUBS00H9J
BANK 1
BBWA1369E

Page 1623 of 3371

INFINITI QX56 2004  Factory Service Manual EC-432Revision: August 2007
DTC P1271, P1281 A/F SENSOR 1
2004 QX56
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals

Page 1624 of 3371

INFINITI QX56 2004  Factory Service Manual DTC P1271, P1281 A/F SENSOR 1
EC-433
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: August 20072004 QX56
BANK 2
BBWA0919E