MTC 75

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

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. HVAC System Test (MTC)

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