NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts

×: Applicable
Preparation
Basic inspectionPeriodic maintenance
ENGINE COOLANT
System Inspection
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could occur
from high pressure
coolant escaping from the radiator. Wrap a thick cloth around the radiator cap.
Slowly turn it a quarter
turn to allow built-up pressure to escape. C ...
Optical sensor
Description
The optical sensor converts the outside brightness (lux) to voltage and
transmits the optical sensor signal to the BCM.
Component Function Check
1.CHECK OPTICAL SENSOR SIGNAL BY CONSULT
CONSULT
Turn the ignition switch ON.
Select "OPTICAL SENSOR" of BCM (HEAD LAMP) DATA MONIT ...
Hydraulic control system
System Diagram
System Description
The hydraulic control mechanism consists of the oil pump directly driven by
the engine, the hydraulic control
valve that controls line pressure and transmission, and the input signal lin
LINE PRESSURE AND SECONDARY PRESSURE CONTROL
When an input t ...