DTC 76: Ac Request Output Signal Low When Driven High

For complete wiring diagrams refer to:

SYSTEM WIRING DIAGRAMS for 300.
SYSTEM WIRING DIAGRAMS for Charger.

When Monitored:
With the ignition on.
Set Condition:
If the A/C Heater Control detects voltage below 1.51 volts on the (C105) HVAC MUX Control 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) .