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System Description
NHEC0264
This circuit line (LAN) is used to control the smooth shifting up and down of A/T during the hard acceleration/
deceleration.
Pulse signals are exchanged between ECM and TCM (Transmission Control Module).
Be sure to erase the malfunction information such as DTC not only in TCM but also ECM after the A/T
related repair.
On Board Diagnosis Logic
NHEC0266
Malfunction is detected when ECM receives incorrect voltage from
TCM (Transmission Control Module) continuously.
Possible Cause
NHEC0517
I Harness or connectors
[The communication line circuit between ECM and TCM
(Transmission Control Module) is open or shorted.]
I TCM
I Dead (Weak) battery
SEF058Y
DTC Confirmation Procedure
NHEC0267
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 10 seconds
before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that bat-
tery voltage is more than 10.5V at idle.
WITH CONSULT-II
NHEC0267S01
1) Turn ignition switch “ON”.
2) Select “DATA MONITOR” mode with CONSULT-II.
3) Start engine and let it idle for at least 2 seconds.
4) If DTC is detected, go to “Diagnostic Procedure”, EC-448.
DTC P0600 A/T COMMUNICATION LINE
System Description
EC-446
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