Pinpoint Test A: Cooling Fan Tests

WARNING: This page is about a different variant/trim than selected.

A1: CHECK FOR COOLING FAN RELATED S
1. Using the manufacturer approved diagnostic system, check the powertrain control module for the following cooling fan related DTC s (with any third byte):
  - P0480 Fan 1 Control Circuit
  - P0481 Fan 2 Control Circuit
  - P0483 Fan Rationality Check
  Are any cooling fan related DTC s set in the powertrain control module?
  
  Yes: Refer to the powertrain control module DTC index and perform the relevant corrective action. GO to A4.
  
  No: GO to A2.
A2: CHECK FOR OTHER S
1. Using the manufacturer approved diagnostic system check the powertrain control module for DTC s
  Are any other DTC s set in the powertrain control module?
  
  Yes: Refer to the powertrain control module DTC index and perform the relevant corrective action
  
  No: GO to A3.
A3: WIRING CHECK
1. Refer to the appropriate system wiring diagrams and check the cooling fan motor control module circuits for short circuit to ground, short circuit to power, open circuit, high resistance
  Were any circuit faults present?
  
  Yes: Repair the wiring harness as necessary. GO to A4.
  
  No: GO to A4.
A4: COOLING FAN VALIDATION PROCEDURE
1. Make sure that the hood is closed
2. Start the engine
3. Set the air conditioning to on, set the temperature to cold and the fan speed to fast
4. Allow the engine to reach normal operating temperature (approximately 90°C)
5. Using the manufacturer approved diagnostic system, check datalogger signals - Engine Coolant Temperature (0xF405) - and - Electric Fan PWM Control Commanded (0x03F9). As the engine coolant temperature reaches normal operating temperature, the fan speed should increase between the values of 9% and 90%
  Did the cooling fan speed increase speed as engine coolant temperature increased?
  
  Yes: Return vehicle to customer
  
  No: Contact Retailer Technical Support