Nissan Terrano model r20 series 2004. Manual — part 92
Wiring Diagram
LHD MODELS
YEC173A
DTC 0102 MASS AIR FLOW SEN
ZD30DDTi
EC-90
RHD MODELS
YEC174A
DTC 0102 MASS AIR FLOW SEN
ZD30DDTi
Wiring Diagram (Cont’d)
EC-91
Diagnostic Procedure
1
CHECK MAFS POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect mass air flow sensor harness connector.
MEC993D
3. Turn ignition switch “ON”.
4. Check voltage between mass air flow sensor terminals 2, 4 and ground with CONSULT-II or tester.
MEC973D
MTBL1318
OK or NG
OK
E
GO TO 3.
NG
E
GO TO 2.
2
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors M787, F66 (LHD models)
I
Harness connectors F135, M842 (RHD models)
I
Harness for open or short between mass air flow sensor and ECM
I
Harness for open or short between mass air flow sensor and ECM relay
E
Repair open circuit or short to ground or short to power in harness or connector.
DTC 0102 MASS AIR FLOW SEN
ZD30DDTi
EC-92
3
CHECK MAFS GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
MEC994D
3. Check harness continuity between mass air flow sensor terminal 3 and engine ground. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK
E
GO TO 5.
NG
E
GO TO 4.
4
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors F135, M842 (RHD models)
I
Harness for open or short between mass air flow sensor and ECM
E
Repair open circuit or short to ground or short to power in harness or connectors.
5
CHECK MAFS INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between mass air flow sensor terminal 5 and ECM terminal 35. Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK
E
GO TO 7.
NG
E
GO TO 6.
6
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors F135, M842 (RHD models)
I
Harness for open or short between mass air flow sensor and ECM
E
Repair open circuit or short to ground or short to power in harness or connectors.
DTC 0102 MASS AIR FLOW SEN
ZD30DDTi
Diagnostic Procedure (Cont’d)
EC-93
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