COOLING FAN – Chevrolet Impala LS 2003 – SYSTEM WIRING DIAGRAMS

COOLING FAN

Cooling Fan Wiring Diagram for Chevrolet Impala LS 2003

List of elements for Cooling Fan Wiring Diagram for Chevrolet Impala LS 2003:

• (fuel inj jumper harn, midway between fuel inj no 3 breakout and (map) sensor breakout)
• (fwd lamp harn, 18.5 cm from g101 breakout)
• (fwd lamp harn, 31.5 cm from ambient air temp sensor breakout)
• 3.4l
• 3.8l
• B10
• C10
• Ect sig
• Engine controls system (map sensor)
• Engine coolant temperature (ect) sensor (left rear of engine, near coolant outlet)
• Fan cont 1 fuse 25a
• Fan cont 2 & 3 fuse 25a
• Fan control 1 relay
• Fan control 2 relay
• Fan control 3 relay
• G101 (top left front of radiator support)
• High spd
• Hot at all times
• Left cooling fan
• Low spd
• Powertrain control module (in air cleaner assembly)
• Right cooling fan
• S121
• S148
• S175
• Underhood junction block (bottom) (right side of engine compt, forward of strut tower)