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Description
NHEC0547
This circuit line is used to control the smooth engine operation of
ABS/TCS during the TCS operation. Pulse signals are exchanged
between ECM and ABS/TCS control unit.
Be sure to erase the malfunction information such as DTC not
only in ABS/TCS control unit but also ECM after the ABS/TCS
related repair.
DTC ERASING PROCEDURE FOR ABS/TCS RELATED
REPAIR
NHEC0547S01
1) Turn ignition switch “OFF” and then turn it “ON”.
2) Connect CONSULT-II and select “ABS”.
3) Select “ABS” and touch “SELF-DIAG RESULTS”.
4) Touch “ERASE”.
5) Touch “BACK” then erase malfunction code which has been
stored in the TCM or ECM.
On Board Diagnosis Logic
NHEC0549
Freeze frame data is not stored in the ECM for the ABS/TCS
communication line. The MIL will not light up for the ABS /TCS
communication line.
Malfunction is detected when ECM receives incorrect voltage from
ABS/TCS control unit continuously.
Possible Cause
NHEC0550
I Harness or connectors
(The communication line circuit between ECM and ABS/TCS
control unit is open or shorted.)
I ABS/TCS control unit
I Dead (Weak) battery
SEF058Y
DTC Confirmation Procedure
NHEC0551
TESTING CONDITION:
Before performing the following procedure, confirm that bat-
tery voltage is more than 10.5V at idle.
WITH CONSULT-II
NHEC0551S01
1) Turn ignition switch “ON”.
2) Select “DATA MONITOR” mode with CONSULT-II.
3) Start engine and let it idle for at least 3 seconds.
4) If a 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-488.
DTC P1212 ABS/TCS COMMUNICATION LINE
Description
EC-486
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