Chart C-12C-B - Cooling Fan No High Speed Front Fan (4 Of 5) (3.8L "E" Body)

NOTE: Test numbers refer to test numbers on diagnostic charts.

1. Test light should be on because harness terminal No. 5 has B+ with ignition switch on.
2. Test light on validates circuit No. 536 from PCM to relay "C".
3. Jumpering terminal No. 1 to 4 of relay "C" by-passes fan relay.
4. Test light on validates all circuits. If light is on, front fan motor is faulty. If light is off, problem is with ground circuit No. 804.

Fig 1: Chart C-12C-B Schematic (3.8L "E" Body) Cooling Fan Circuit Diagnosis (No High Speed Front Fan)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Chart C-12C-B Flow Chart (4 Of 5)(3.8L "E" Body) Cooling Fan Circuit Diagnosis (No High Speed Front Fan)

Courtesy of GENERAL MOTORS CORP.