DIAGNOSTIC PROCEDURE 3
Self-diagnostic results:
``CHAIN OF ECM-IMMU'' displayed on CONSULT screen
Confirm SELF-DIAGNOSTIC
RESULTS ``CHAIN OF ECM-
IMMU'' displayed on CONSULT
screen.
OK
CHECK POWER SUPPLY CIRCUIT FOR
IMMU.
Check voltage between IMMU terminal
V8and ground.
Battery voltage should exist.
OK
cNG
Check the following.
l10A fuse (No.34,
located in the fusible link
and fuse box)
lHarness for open or
short between fuse and
IMMU connector
CHECK IGN SW. ON SIGNAL.
Check voltage between IMMU terminal
V7and ground while ignition switch is
``ON'' position.
Battery voltage should exist.
OK
cNG
Check the following.
l10A fuse (No.23,
located in the fuse block)
lHarness for open or
short between fuse and
IMMU connector
CHECK GROUND CIRCUIT FOR IMMU.
Check continuity between IMMU terminal
V4and ground.
Continuity should exist.
OK
cNG
Repair harness.
CHECK COMMUNICATION LINE OPEN
CIRCUIT.
Check continuity between IMMU terminal
V1and ECM terminalV9.
Continuity should exist.
OK
cNG
Repair harness.
VA
SEL333U
SEL395VC
SEL396VC
SEL397VC
SEL633V
.
.
.
.
.
NATS (Nissan Anti-Theft System)/Gasoline engine for LHD models
Trouble Diagnoses (Cont'd)
EL-191
VA
CHECK POWER SUPPLY CIRCUIT FOR
IMMU.
Check voltage between terminal
V4of
IMMU and ground with CONSULT or
tester.
Voltage: Battery voltage
OK
cNG
Check the following.
l10A fuse (No.34,
located in the fusible
link and fuse box)
lHarness for open or
short between fuse and
IMMU connector
CHECK IGN SW. ON SIGNAL.
Check voltage between terminal
V3of
IMMU and ground with CONSULT or
tester.
Voltage: Battery voltage
OK
cNG
Check the following.
l10A fuse (No.23,
located in the fuse
block)
lHarness for open or
short between fuse and
IMMU connector
CHECK GROUND CIRCUIT FOR IMMU.
Check harness continuity between IMMU
terminal
V9and ground.
Continuity should exist.
OK
cNG
Repair harness.
lIMMU is malfunctioning.
1. Replace IMMU.
2. Perform system initialisation with CON-
SULT.
For the operation of system
initialisation, refer to ``CONSULT opera-
tion manual NATS V2.0 (Diesel)''.
SEL867UE
SEL868UE
SEL453VA
.
.
.
.
NATS (Nissan Anti-Theft System)/Diesel engine
Trouble Diagnoses (Cont'd)
EL-215
