Pinpoint Test H: The Active Park Assist System Does Not Activate When The Active Park Assist Switch Is Pressed

Normal Operation and Fault Conditions

To activate, the active park assist system relies on several messaged inputs and driver input through the active park assist switch. REFER to: Parking Aid - System Operation and Component Description .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B129E:13	Enable/Disable Switch - Semi-automatic Advanced Parallel Park: Circuit Open	A continuous DTC that sets in the PAM when the PAM detects a stuck open in the active park assist switch input circuit.
PAM B129E:9E	Enable/Disable Switch - Semi-automatic Advanced Parallel Park: Stuck On	A continuous DTC that sets in the PAM when the PAM detects a short to ground in the active park assist switch input circuit.

Possible Sources

Wiring
PAM

H1 VERIFY THE CUSTOMER CONCERN

Ignition ON.

Verify the operation of the active park assist system.

Does the active park assist system operate correctly?

Yes	CLEAR the DTC. The system is operating correctly at this time. The concern may have been caused by high network traffic or the driver's perception of how the active park assist system operate. REFER to the Owner's Manual.

GO to H2

H2 CHECK THE PAM (PARKING ASSIST CONTROL MODULE) MODULE DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, carry out the PAM self-test.

Are any Diagnostic Trouble Codes (DTCs) present?

Yes	For DTC B129E:13, GO to H4 For DTC B129E:9E, GO to H3 For all other PAM Diagnostic Trouble Codes (DTCs). REFER to the appropriate PAM DTC Chart.

GO to H5

H3 CHECK THE ACTIVE PARK ASSIST SWITCH CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect auto-start-stop-deactivation switch C3010.

Disconnect PAM C4226A.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3010-2	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to H6

No	REPAIR the circuit.

H4 CHECK THE ACTIVE PARK ASSIST SWITCH CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect PAM C4226A.

Disconnect auto-start-stop-deactivation switch C3010.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3010-2	Courtesy of FORD MOTOR COMPANY	C4226A-12

Is the resistance less than 3 ohms?

Yes

GO to H5

No	REPAIR the circuit.

H5 CHECK THE ACTIVE PARK ASSIST SWITCH GROUND CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3010-12	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes

GO to H6

No	REPAIR the circuit.

H6 CHECK THE ACTIVE PARK ASSIST SYSTEM SWITCH OPERATION

Connect auto-start-stop deactivation switch C3010.

Measure while pressing and releasing the active park assist switch:

Positive Lead	Measurement / Action	Negative Lead
C4226A-12	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms with the switch pressed and greater than 10, 000 ohms with the switch released?

Yes

GO to H7

No	INSTALL a new auto-start-stop deactivation switch.

H7 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes	CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new PAM. REFER to: Parking Assist Control Module (PAM)

No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.