The engine cooling fan system is composed of one cooling fan, a series of 5
relays, the engine control module
(ECM), and the associated wiring. The cooling fan assembly includes two
resistors. This
Engine Coolant Indicators
The instrument panel cluster (IPC) shows the engine temperature on the
temperature gauge. The value is
sent on the data communication line from engine control module (EC
Fuel System Overview
The engine control module (ECM) enables the fuel pump relay when the ignition
switch is turned ON. The
ECM will disable the fuel pump relay within 2 seconds unless the control module
detects ignition reference
pulses. The ECM continues to enable the fuel pump relay as long as
Special Tools
CH-51450-NVH Oscilloscope Diagnostic Kit (w/NVH)
EL-47966 Multi Diagnostic Interface MDI
For equivalent regional tools, refer to Special Tools and Equipment.
The CH-51450-NVH Oscilloscope Diagnostic Kit (w/NVH) is an automotive
oscilloscope which receives input
from an attached ac