Operation CHARM: Car repair manuals for everyone.

Part 2 of 2

Chart C-12:




Cooling Fan Circuit:






TEST DESCRIPTION: Number(s) below refer to circled number(s) on the diagnostic chart.

1. 12 volts should be available to both terminal "2" and CKT 532 when the ignition is "ON."

2. This test checks the ability of the ECM to ground CKT 335. The Malfunction Indicator Lamp (MIL) should also be flashing at this point. If it isn't flashing, Related Tests, Information and Procedures

3. If the fan does not turn "ON" at this point, CKT 532 or CKT 150 is open or the cooling fan motor is faulty.