2005 INFINITI QX4 Factory Service Manual

oil capacity alternator belt tire type wiring diagram battery location tire pressure reset

Load previous 8 pages

Page 1377 of 3419

INFINITI QX4 2005 Factory Service Manual EC-186Revision: October 2005
DTC P0102, P0103 MAF SENSOR
2005 QX56
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals w

Page 1378 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P0102, P0103 MAF SENSOR
EC-187
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: October 20052005 QX56
3. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the

Page 1379 of 3419

INFINITI QX4 2005 Factory Service Manual EC-188Revision: October 2005
DTC P0102, P0103 MAF SENSOR
2005 QX56
6. CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harn

Page 1380 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P0102, P0103 MAF SENSOR
EC-189
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: October 20052005 QX56
Component InspectionUBS00H1A
MASS AIR FLOW SENSOR
With CONSULT-II
1. Reconnect all harness connectors disc

DTC P0102, P0103 MAF SENSOR
EC-189
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: October 20052005 QX56
Component InspectionUBS00H1A
MASS AIR FLOW SENSOR
With CONSULT-II
1. Reconnect all harness connectors disconnected.
2. Start engine and warm it up to normal operating temperature.
3. Connect CONSULT-II and select “DATA MONITOR” mode.
4. Select “MAS A/F SE-B1” and check indication under the follow-
ing conditions.
*: Check for linear voltage rise in response to engine being increased to about
4,000 rpm.
5. If the voltage is out of specification, proceed the following.
a. Check for the cause of uneven air flow through mass air flow sensor. Refer to following.
Crushed air ducts
Malfunctioning seal of air cleaner element
Uneven dirt of air cleaner element
Improper specification of intake air system parts
b. If NG, repair or replace malfunctioning part and perform step 2 to 4 again.
If OK, go to next step.
6. Turn ignition switch OFF.
7. Disconnect mass air flow sensor harness connector and reconnect it again.
8. Perform step 2 to 4 again.
9. If NG, clean or replace mass air flow sensor.
Without CONSULT-II
1. Reconnect all harness connectors disconnected.
2. Start engine and warm it up to normal operating temperature.
3. Check voltage between ECM terminal 51 (Mass air flow sensor
signal) and ground.
*: Check for linear voltage rise in response to engine being increased to about
4,000 rpm.
4. If the voltage is out of specification, proceed the following.
a. Check for the cause of uneven air flow through mass air flow sensor. Refer to following.
Crushed air ducts
Malfunctioning seal of air cleaner element
Uneven dirt of air cleaner element
Improper specification of intake air system parts
Condition MAS A/F SE-B1 (V)
Ignition switch ON (Engine stopped.) Approx. 0.4
Idle (Engine is warmed-up to normal
operating temperature.)1.0 - 1.3
2,500 rpm (Engine is warmed-up to
normal operating temperature.)1.7 - 2.1
Idle to about 4,000 rpm* 1.0 - 1.3 to Approx. 2.4
PBIB2371E
Condition MAS A/F SE-B1 (V)
Ignition switch ON (Engine stopped.) Approx. 0.4
Idle (Engine is warmed-up to normal
operating temperature.)1.0 - 1.3
2,500 rpm (Engine is warmed-up to
normal operating temperature.)1.7 - 2.1
Idle to about 4,000 rpm* 1.0 - 1.3 to Approx. 2.4
PBIB11 06 E

Page 1381 of 3419

INFINITI QX4 2005 Factory Service Manual EC-190Revision: October 2005
DTC P0102, P0103 MAF SENSOR
2005 QX56
b. If NG, repair or replace malfunctioning part and perform step 2 to 3 again.
If OK, go to next step.
5. Turn ignition switch OFF.
6

Page 1382 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P0112, P0113 IAT SENSOR
EC-191
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: October 20052005 QX56
DTC P0112, P0113 IAT SENSORPFP:22630
Component DescriptionUBS00H1C
The intake air temperature sensor is bui

Page 1383 of 3419

INFINITI QX4 2005 Factory Service Manual EC-192Revision: October 2005
DTC P0112, P0113 IAT SENSOR
2005 QX56
Wiring DiagramUBS00H1F
BBWA0879E

Page 1384 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P0112, P0113 IAT SENSOR
EC-193
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: October 20052005 QX56
Diagnostic ProcedureUBS00H1G
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retight

Load next 8 pages

Page: < prev 1-10 ... 1345-1352 1353-1360 1361-1368 1369-1376 1377-1384 1385-1392 1393-1400 1401-1408 1409-1416 ... 3424 next >

winter tyres brake light window open bonnet wiring diagram center console