LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1226 (Engine Cooling System) >> Diagnostic Information and Procedures >> DTC P0481 >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

The number(s) below refer to the step number(s) on the diagnostic table.

  1. 2. Listen for an audible click when the cooling fan s/p and the cooling fan 2 relays operate. Command both the ON and OFF states. Repeat the commands as necessary.
  2. 3. Tests for voltage at the coil side of the cooling fan 2 relay. The cool fan 2 fuse supplies power to the coil side of the cooling fan 2 relay.
  3. 4. Verifies that the PCM is providing ground to the cooling fan 2 relay.
  4. 5. Tests if ground is constantly being applied to the cooling fan 2 relay.
Fig 1: DTC P0481
G01703802Courtesy of GENERAL MOTORS CORP.