vehicle’s accessories and avoiding heavy
acceleration. The traction inverter module (TIM)
computes economy and transmits the information
through the SCP to the IAA module.

The traction battery state of charge (SOC) gauge is
the equivalent of a fuel gauge on a
gasoline-powered vehicle. F (full) indicates that the
traction battery is completely charged, and E

The distance to empty (DTE) gauge displays the

(empty) indicates that the traction battery has been

approximate distance the vehicle can travel on the

discharged and requires recharging. When the gauge

remaining traction battery charge. The gauge’s

reads E, the traction battery is discharged to the

reading is based upon remaining traction battery

point where further vehicle usage will shorten the

charge, driving conditions, and current vehicle

traction battery service life. The battery control

usage. The BCM calculates the DTE and transmits

module (BCM) calculates the SOC and transmits

this data to the IAA module for display on the

the data to the interface adapter assembly (IAA)

gauge. The gauge will rise and fall as driving

module through the standard corporate protocol

conditions change.

(SCP) network.

413-01-3

Instrument Cluster

DESCRIPTION AND OPERATION (Continued)

The speedometer indicates the vehicle’s speed in

The temperature gauge is controlled by the IAA

both miles per hour (mph) and kilometers per hour

module. The gauge indicates to the operator the

(km/h). The speedometer is driven by the traction

relative temperature of the powertrain, which

inverter module (TIM), which uses two relative

includes the traction battery, TIM, motor/transaxle,

position sensors in the motor to calculate vehicle

and the coolant. The coolant temperature is

speed.

determined based upon a signal from the coolant
temperature sensor. All other temperature
information is received through the SCP network. If
the gauge reading is in the normal or hot region, it
will display the warmest relative temperature of the
TIM, motor/transaxle, traction battery, or the coolant
system. If the gauge is in the cold region, the
traction battery is cold enough to limit power
output.

The motor enabled gauge indicates that the vehicle
is turned on and is ready to drive. Turning the
ignition to the START position and releasing it will
turn the vehicle on, and the gauge will move to the
ON position. The IAA module operates this gauge
based upon SCP data received from the TIM.

The gear selector indicates in which gear the vehicle
is. The positions include P (Park), R (Reverse), N
(Neutral), D (Drive), and E (Economy).

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