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TROUBLE DIAGNOSIS
EC-531
[QR (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
17. DETECT MALFUNCTIONING PART
Check the following.
● Check camshaft position sensor (PHASE) and circuit. Refer to EC-646 .
● Check crankshaft position sensor (POS) and circuit. Refer to EC-638 .
OK or NG
OK >> GO TO 18.
NG >> 1. Repair or replace.
2. GO TO 4.
18. CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to EC-515,
"NATS (Nissan Anti-theft System)" .
>> GO TO 4.
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