Twin-Turbo

AIV Solenoid
Energized engine temperature below 64° C (147° F) [1 & 2]
Energized engine temperature above 65° C (149° F) [1 & 3]

EGR Solenoid
Energized when starting
Energized low engine temperature
Energized when idling
Energized high engine temperature
Energized high engine rpm

Radiator Fan Operation
A/C OFF
Coolant temperature below 104° C (219° F) OFF
Coolant temperature Above 105° C (221° F) ON
A/C ON
Vehicle speed below 24 mph (39 km/h)
Coolant temperature below 89° C (192° F) OFF
Coolant temperature between 90° C (194° F) & 99° C (211° F) ON (low)
Coolant temperature above 100° C (212° F) ON (high)
Vehicle speed above 25 mph (40 km/h)
Coolant temperature below 104° C (219° F) OFF
Coolant temperature above 105° C (221° F) ON (high)


[1] Throttle valve closed.
[2] At any vehicle speed.
[3] Vehicle below above 15 mph (24 km/h)