Part 2 of 2

Chart C-12 Part 2 Of 2:

A/C Circuit:

TEST DESCRIPTION: Numbers below refer to circled numbers on the diagnostic chart.

1. 12 volts should be available to both terminal "A" & "D," when the ignition is "ON."

2. This test checks the ability of the ECM to ground CKT 335. The "SERVICE ENGINE SOON" light should also be flashing at this point. If it isn't flashing, Related Tests, Information and Procedures

3. If the fan does not come "ON," at this point, CKT 702 or CKT 150 is open, or the cooling fan motor is faulty.