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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1587 (MULTIFUNCTION Electronic Modules (Except Electric)) >> Diagnosis And Testing >> Body Control Module (BCM) >> Pinpoint Tests >> Pinpoint Test S : B12CB:11, B12CB:23 >> Notes

Pinpoint Test S : B12CB:11, B12CB:23: Notes

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Refer to OEM WIRING DIAGRAMS (EXCEPT ELECTRIC) for schematic and connector information.

Normal Operation and Fault Conditions 

When the ignition is turned on, the auto-start-stop system is automatically enabled and the indicator should be off. If the auto-start-stop system detects a malfunction, it is disabled, and the OFF lamp on the switch illuminates continuously. All other BCM and PCM Diagnostic Trouble Codes (DTCs) should be diagnosed and repaired. Each time the auto-start-stop disable switch is pressed the indicator should toggle on and off. The auto-start-stop status indicator and auto-start-stop disable switch are part of the active park assist switch assembly.

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
B12CB:11 Start/Stop "Eco-Start" Enable Button: Circuit Short To Ground Sets when the BCM detects a short to ground on the auto-start-stop disable switch circuit.
B12CB:23 Start/Stop "Eco-Start" Enable Button: Signal Stuck Low Sets when the BCM detects ground on the auto-start-stop disable switch circuit.

Possible Sources 

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