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

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector. Use only Rotunda Flex Probes (NUD105-R025D)

D1 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 D2

D2 PERFORM A NETWORK TEST
- Using a diagnostic scan tool, perform a network test.
Do all modules pass the network test?

Yes GO to D3

No REFER to: Communications Network .

D3 CHECK THE CONTINUOUS AND ON-DEMAND PAM (PARKING ASSIST CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, perform the PAM self-test.
Are any Diagnostic Trouble Codes (DTCs) present other than DTC B129E:11?

Yes DIAGNOSE other PAM Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart: PAM .

No GO to D6

D4 CHECK THE ACTIVE PARK ASSIST SWITCH CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect Active Park Assist Switch C3258 .

Disconnect PAM C4014A .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3258-9	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to D5

No	REPAIR the circuit.

D5 CHECK THE ACTIVE PARK ASSIST SWITCH CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3258-9	Courtesy of FORD MOTOR COMPANY	C4014A-16

Is the resistance less than 3 ohms?

Yes

GO to D6

No	REPAIR the circuit.

D6 CHECK THE ACTIVE PARK ASSIST SWITCH GROUND CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3258-12	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes

GO to D7

No	REPAIR the circuit.

D7 CHECK THE ACTIVE PARK ASSIST SYSTEM SWITCH OPERATION

Connect Active Park Assist Switch C3258 .

Measure while pressing and releasing the active park assist switch:

Positive Lead	Measurement / Action	Negative Lead
C4014A-16	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 D8

No	INSTALL a new active park assist switch. REFER to: Active Park Assist Switch .

D8 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors and related in-line 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 and related in-line 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new PAM. REFER to: Parking Assist Control Module (PAM) - 4-Door . REFER to: PARKING ASSIST CONTROL MODULE (PAM) - 5-DOOR .

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