Infiniti I35 (A33). Manual — part 278
SEF058Y
WITH CONSULT-II
NHEC1447S01
1)
Turn ignition switch ON.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Start engine and wait at least 5 seconds.
4)
If DTC is detected, go to “Diagnostic Procedure”, EC-455.
WITH GST
NHEC1447S02
Follow the procedure “With CONSULT-II” above.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1102 MAF SENSOR
DTC Confirmation Procedure (Cont’d)
EC-453
Wiring Diagram
=NHEC0810
MEC531D
SEF650XE
DTC P1102 MAF SENSOR
Wiring Diagram
EC-454
Diagnostic Procedure
=NHEC0811
1
CHECK INTAKE SYSTEM
Check the following for connection.
I
Air duct
I
Vacuum hoses
OK or NG
OK
©
GO TO 2.
NG
©
Reconnect the parts.
2
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten two engine ground screws.
Refer to “Ground Inspection”, EC-160.
SEC047D
OK or NG
OK
©
GO TO 3.
NG
©
Repair or replace ground connections.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1102 MAF SENSOR
Diagnostic Procedure
EC-455
3
CHECK MAF SENSOR POWER SUPPLY CIRCUIT
1. Disconnect mass air flow (MAF) sensor harness connector.
SEC055D
2. Turn ignition switch ON.
3. Check voltage between MAF sensor terminals 2, 4 and ground with CONSULT-II or tester.
SEF297X
OK or NG
OK
©
GO TO 5.
NG
©
GO TO 4.
4
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors E15, F18
I
Harness for open or short between ECM relay and mass air flow sensor
I
Harness for open or short between mass air flow sensor and ECM
©
Repair harness or connectors.
5
CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between MAF sensor terminal 3 and ECM terminal 80.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to power.
OK or NG
OK
©
GO TO 6.
NG
©
Repair open circuit or short to power in harness or connectors.
DTC P1102 MAF SENSOR
Diagnostic Procedure (Cont’d)
EC-456
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