2007 INFINITI QX56 Factory Service Manual

Page 1281 of 3061

INFINITI QX56 2007  Factory Service Manual EC-198
< SERVICE INFORMATION >
DTC P0102, P0103 MAF SENSOR
4.CHECK MAF SENSOR POWER SUPPLY CIRCUIT
1. Disconnect mass air flow (MAF) sensor harness connector.
2. Turn ignition switch ON.
3. Check volt

Page 1282 of 3061

INFINITI QX56 2007  Factory Service Manual DTC P0102, P0103 MAF SENSOR
EC-199
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
Refer to EC-199, "Component Inspection".
OK or NG
OK >> GO TO 9.
NG >> Replace mass air flow sensor.
9.CHECK

Page 1283 of 3061

INFINITI QX56 2007  Factory Service Manual EC-200
< SERVICE INFORMATION >
DTC P0102, P0103 MAF SENSOR
3. Check voltage between ECM terminal 51 (Mass air flow sensor
signal) and ground.
*: Check for linear voltage rise in response to engine bei

Page 1284 of 3061

INFINITI QX56 2007  Factory Service Manual DTC P0112, P0113 IAT SENSOR
EC-201
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
DTC P0112, P0113 IAT SENSOR
Component DescriptionINFOID:0000000003531697
The intake air temperature sensor is

Page 1285 of 3061

INFINITI QX56 2007  Factory Service Manual EC-202
< SERVICE INFORMATION >
DTC P0112, P0113 IAT SENSOR
Follow the procedure “WITH CONSULT-II” above.
Wiring DiagramINFOID:0000000003531700
Diagnosis ProcedureINFOID:0000000003531701
1.CHECK GR

Page 1286 of 3061

INFINITI QX56 2007  Factory Service Manual DTC P0112, P0113 IAT SENSOR
EC-203
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
Refer to EC-143, "Ground Inspection".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2.C

Page 1287 of 3061

INFINITI QX56 2007  Factory Service Manual EC-204
< SERVICE INFORMATION >
DTC P0112, P0113 IAT SENSOR
5.CHECK INTERMITTENT INCIDENT
Refer to EC-138
.
>>INSPECTION END
Component InspectionINFOID:0000000003531702
INTAKE AIR TEMPERATURE SENSOR
1.

Page 1288 of 3061

INFINITI QX56 2007  Factory Service Manual DTC P0117, P0118 ECT SENSOR
EC-205
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
DTC P0117, P0118 ECT SENSOR
Component DescriptionINFOID:0000000003531704
The engine coolant temperature senso