MTC 76

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


WHEN MONITORED
With the ignition on.

SET CONDITION
If the A/C Heater Control detects voltage below 1.51 volts on the (C221) A/C Switch Sense circuit when the A/C is switched off.

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 74-AC REQUEST OUTPUT SIGNAL TOO LOW for the diagnostic test procedure. MTC 74