Nissan Note [1342/1872] Ec 1342

Nissan Note [1342/1872] Ec 1342
EC-1342
[HR (WITHOUT EURO-OBD)]
POWER SUPPLY AND GROUND CIRCUIT
14. CHECK GROUND CONNECTIONS-II
1. Loosen and retighten ground screws on the body.
Refer to EC-1342, "
Ground Inspection" .
OK or NG
OK >> GO TO 15.
NG >> Repair or replace ground connections.
15. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-II
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 10, 11, 108 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 17.
NG >> GO TO 16.
16. DETECT MALFUNCTIONING PART
Check the following.
Harness or connectors F1, E59
Harness for open or short between ECM and ground
>> Repair open circuit or short to power in harness or connectors.
17. CHECK INTERMITTENT INCIDENT
Refer to EC-1336, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-18, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair open circuit or short to power in harness or connectors.
Ground Inspection
BBS004LG
Ground connections are very important to the proper operation of electrical and electronic circuits. Ground
connections are often exposed to moisture, dirt and other corrosive elements. The corrosion (rust) can
become an unwanted resistance. This unwanted resistance can change the way a circuit works.
Electronically controlled circuits are very sensitive to proper grounding. A loose or corroded ground can drasti-
cally affect an electronically controlled circuit. A poor or corroded ground can easily affect the circuit. Even
when the ground connection looks clean, there can be a thin film of rust on the surface.
When inspecting a ground connection follow these rules:
1. IPDM E/R 2. Body ground 3. Body ground
MBIB1550E
Continuity should exist.

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