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7 CHECK COMMUNICATION LINE GROUND SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between ECM terminal 116 or IMMU terminal 1 and ground.
SEL307WD
OK or NG
OK © GO TO 8.
NG © Communication line is short-circuited with ground line.
Repair harness or connectors.
Ref. part No. C4
8 SIGNAL FROM ECM TO IMMU CHECK
1. Check the signal between ECM terminal 116 and ground with CONSULT-II or oscilloscope when ignition switch is
turned “ON”.
2. Make sure signals which are shown in the figure below can be detected during 750 msec. just after ignition switch is
turned “ON”.
SEL730W
OK or NG
OK © IMMU is malfunctioning.
Replace IMMU. Ref. part No. A
Perform initialization with CONSULT-II.
For the operation of initialization, refer to “CONSULT-II Operation Manual IVIS/NVIS”.
NG © ECM is malfunctioning.
Replace ECM. Ref. part No. B
Perform initialization with CONSULT-II.
For the operation of initialization, refer to “CONSULT-II Operation Manual IVIS/NVIS”.
GI
MA
EM
LC
EC
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM — NATS)
Trouble Diagnoses (Cont’d)
EL-397
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