i saw this info, maybe you can use it.
16864/P0480/001152 - Coolant Fan Control Circuit 1: Electrical Malfunction
Coolant Fan Control Module (J293) faulty
Coolant Fan 2 (V177) restricted/jammed
Wiring and/or Connector(s) from/to Coolant Fan Control Module (J293) faulty
Wiring and/or Connector(s) from/to Coolant Fan 2 (V177) faulty
Check Coolant Fan Control Module (J293) Perform Output Test
Check Coolant Fan 2 (V177) for Restriction/Blockade Check for Foreign Objects and Accidental Damage as well as Restrictions
Check Wiring and/or Connector(s) from/to Coolant Fan Control Module (J293)
Check Wiring and/or Connector(s) from/to Coolant Fan 2 (V177)
Remove the Coolant Fan 2 (V177) Fuse(s) for Safety Reasons before checking it
And this,DTC P0480
Details of the Circuit
The cooling fan relay coil receives the Ignition Voltage directly.
The relay is regulated by grounding the control circuit via the driver or the internal switch, a process which is entirely controlled by the ECM.
The driver has been specially devised to supply the ground for the component being controlled.
The ECM monitors the fault line which every driver has.
When the ECM is commanding a component ON, the voltage of the control circuit needs to be low (near 0volts).
When the ECM is commanding the control circuit to a component OFF, the voltage potential of the circuit should be high (near battery voltage).
The fault line status will automatically change causing the DTC to set if the fault detection circuit senses a voltage different from what is expected.
In order to control the high current flow to the cooling fan motors assistance of the relay is sought.
This enables the ECM driver to handle the relatively low current used by the relay
All info found on google, so hope you can use it. Anyway good luck.
Last edited by lesken; 06-07-12 at 16:58.