Noise, vibration and harshness (nvh) troubleshooting
NVH Troubleshooting Chart
Use chart below to find the cause of the symptom. If necessary, repair or replace these parts.

×: Applicable
PreparationEcu diagnosis information
Ipdm e/r (intelligent power distribution module engine room)
Reference Value
Values on the diagnosis tool
Terminal layout
Physical values
Fail-safe
Can communication control
When CAN communication with ECM and BCM is impossible, IPDM E/R performs
fail-safe ...
Ecm branch line circuit
Diagnosis Procedure
1.Check connector
Turn the ignition switch off.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the ECM for damage, bend and loose
connection (unit side and
connector side).
Is the inspection result normal?
YES > ...
Dtc/circuit diagnosis
Sport mode switch
Component function check
1. Check sport mode switch operation
Turn ignition switch on.
Check SPORT mode indicator lamp turns ON/OFF on combination meter when
turn SPORT mode switch
ON/OFF.
Is the inspection result normal?
Yes >> go to 2.
No >> procee ...