Century V6-231 3.8L (1985)
Fig. 002 - WIRING DIAGRAM for Chart C-12A Coolant Fan Check - Single Speed Coolant Fan. VIN 3
CHART C-12A
COOLANT FAN CHECK (SINGLE SPEED FAN)
3.8L "A" SERIES
FUEL INJECTION (PORT)
1.
Checks to see if fan runs at all times with ignition on.
2.
Grounding the test terminal in the ALCL connector should cause the ECM to ground CKT 335. At this point the fan should run.
3.
Grounding the coolant temp. override switch harness to ground should cause the relay to turn; on the fan. If the fan runs, the fan control relay and
CKT 335 to the coolant temp. override switch are good.
4.
Checks to see if coolant temp. override switch operates correctly. Test light should come on at about 108°C (226°F) and the "Hot light" on the
instrument panel should come on above 116°C (241°F).
5.
Checks to see if coolant fan delay relay works. With coolant temp override switch harness grounded and ignition "off", fan should run about 10
minutes or until ground jumper is removed.
