Heating & A/C System: 76

76-AC REQUEST OUTPUT SIGNAL LOW WHEN DRIVEN HIGH

For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

- 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. for stored DTC test procedures. HVAC System Test

Perform 74-AC REQUEST OUTPUT SIGNAL TOO LOW diagnostic test procedure. 74