75-AC REQUEST OUTPUT SIGNAL HIGH WHEN DRIVEN LOW (MTC)

For a complete wiring diagram Refer to Section 8W.

• When Monitored:

  With the ignition on.

• Set Condition:

  If the A/C Heater Control detects voltage above 4.49 volts on the (C221) A/C Switch Sense circuit with the A/C switched on.

NOTE: This DTC must be active for the results of this test to be valid. Do not perform this test if this DTC is stored. Refer to HVAC System Test (MTC) for stored DTC test procedures.

Refer to 73–AC REQUEST OUTPUT SIGNAL TOO HIGH for the diagnostic test procedure.