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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1561 (Climate Control System - General Information (Except Electric) (2 Of 2)) >> Diagnosis And Testing >> Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) >> Pinpoint Test(s) >> Pinpoint Test I : The Air Conditioning (A/C) Is Always On - A/C Mode Always Commanded On >> Notes

Pinpoint Test I : The Air Conditioning (A/C) Is Always On - A/C Mode Always Commanded On: Notes

WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions 

Control System Logic, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description .

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
P1464 A/C Demand Out Of Self Test Range This DTC sets when the PCM senses an A/C request during a PCM self-test.

Body Control Module (BCM) DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
B101E:23 Air Conditioning Mode Switch General Signal Failures Signal: Stuck Low This on demand DTC sets when the BCM senses a path to ground on the A/C control circuit when a self test is being performed.

Possible Sources 

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