Pinpoint Test N : The Tailgate Latch Release Is Inoperative

WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

N1 CHECK THE TAILGATE RELEASE SWITCH INPUT FOR A SHORT TO GROUND USING THE BCM (BODY CONTROL MODULE) LIFTGATE/DECKLID RELEASE OUTPUT (DECKLID_R_SW) PID (PARAMETER IDENTIFICATION)
- Ignition ON.
- Using a diagnostic scan tool, view the BCM Parameter Identifications (PIDs).
- Using a diagnostic scan tool, view the BCMPID DECKLID_R_SW.
Does the PID indicate the tailgate release switch is continuously pressed?

Yes GO to N2

No GO to N5

N2 CHECK THE TAILGATE RELEASE SWITCH INPUT USING THE BCM (BODY CONTROL MODULE) LIFTGATE/DECKLID RELEASE OUTPUT (DECKLID_R_SW) PID (PARAMETER IDENTIFICATION) WITH THE REAR SWITCH DISCONNECTED
- Ignition OFF.
- Disconnect Rear Tailgate Release Switch C4499.
- Ignition ON.
- Using a diagnostic scan tool, view the BCMPID DECKLID_R_SW.
Does the PID continue to indicate the switch is pressed?

Yes GO to N3

No INSTALL a new rear tailgate release switch. REFER to: Tailgate Release Switch .

N3 CHECK THE TAILGATE RELEASE SWITCH INPUT USING THE BCM (BODY CONTROL MODULE) LIFTGATE/DECKLID RELEASE OUTPUT (DECKLID_R_SW) PID (PARAMETER IDENTIFICATION) WITH THE FRONT SWITCH DISCONNECTED
- Ignition OFF.
- Disconnect Front Tailgate Release Switch C2517.
- Ignition ON.
- Using a diagnostic scan tool, view the BCMPID DECKLID_R_SW.
Does the PID continue to indicate the switch is pressed?

Yes GO to N4

No INSTALL a new rear tailgate release switch. REFER to: Tailgate Release Switch .

N4 CHECK THE TAILGATE RELEASE SWITCH INPUT CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect BCM C2280E.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Refer to C2280E-14	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to N12

No	REPAIR the circuit.

N5 CHECK THE TAILGATE RELEASE SWITCH INPUT USING THE BCM (BODY CONTROL MODULE) LIFTGATE/DECKLID RELEASE OUTPUT (DECKLID_R_SW) PID (PARAMETER IDENTIFICATION)

Using a diagnostic scan tool, view the BCM Parameter Identifications (PIDs).

Using a diagnostic scan tool, view the BCMPID DECKLID_R_SW while pressing the front tailgate release switch and then the rear tailgate release switch.

Does the PID indicate the switch is pressed from both switches?

Yes

GO to N9

No	If the PID does not indicate correctly for one of the switches, GO to N6 If the PID does not indicate correctly for both of the switches, GO to N8

N6 CHECK THE TAILGATE RELEASE INPUT CIRCUIT FOR AN OPEN WHILE MONITORING THE BCM (BODY CONTROL MODULE) LIFTGATE/DECKLID RELEASE OUTPUT (DECKLID_R_SW) PID (PARAMETER IDENTIFICATION)

Ignition OFF.

Disconnect the suspect tailgate release switch.

Ignition ON.

Connect:

Front Tailgate Release Switch

Lead 1	Measurement / Action	Lead 2
Refer to C2517-6	Courtesy of FORD MOTOR COMPANY	Ground

Rear Tailgate Release Switch

Lead 1	Measurement / Action	Lead 2
Refer to C4499-1	Courtesy of FORD MOTOR COMPANY	Ground

Using a diagnostic scan tool, view the BCMPID DECKLID_R_SW.

Does the PID indicate the switch is pressed?

Yes	REMOVE the fused jumper wire. GO to N7

No	REMOVE the fused jumper wire. REPAIR the circuit.

N7 CHECK THE TAILGATE RELEASE SWITCH GROUND CIRCUIT FOR AN OPEN

Connect:

Front Tailgate Release Switch

Lead 1	Measurement / Action	Lead 2
Refer to C2517-6	Courtesy of FORD MOTOR COMPANY	Refer to C2517-2

Rear Tailgate Release Switch

Lead 1	Measurement / Action	Lead 2
Refer to C4499-1	Courtesy of FORD MOTOR COMPANY	Refer to C4499-2

Using a diagnostic scan tool, view the BCMPID DECKLID_R_SW.

Does the PID indicate the switch is pressed?

Yes	REMOVE the fused jumper wire. INSTALL a new tailgate release switch in question. REFER to: Tailgate Release Switch .

No	REMOVE the fused jumper wire. REPAIR the circuit.

N8 CHECK THE TAILGATE RELEASE SWITCH INPUT CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect Front Tailgate Release Switch C2517.

Disconnect BCM C2280E.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Refer to C2280E-14	Courtesy of FORD MOTOR COMPANY	Refer to C2517-6

Is the resistance less than 3 ohms?

Yes

GO to N12

No	REPAIR the circuit.

N9 CHECK THE BCM (BODY CONTROL MODULE) TAILGATE RELEASE OUTPUT

NOTE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250-300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

Ignition OFF.

Disconnect Tailgate Release Actuator C4223.

Connect:

Lead 1	Measurement / Action	Lead 2
Refer to C4223-1	Courtesy of FORD MOTOR COMPANY	Ground

Unlock the doors using the door lock control switch.

NOTE: The BCM only supplies voltage to the actuator momentarily. It is important to monitor the test lamp while pressing the door lock control switch.

While pressing the tailgate release switch, monitor the test lamp.

Does the test lamp momentarily illuminate?

Yes

GO to N10

GO to N11

N10 CHECK THE TAILGATE RELEASE ACTUATOR GROUND CIRCUIT FOR AN OPEN

Connect:

Lead 1	Measurement / Action	Lead 2
Refer to C4223-1	Courtesy of FORD MOTOR COMPANY	Refer to C4223-2

NOTE: The BCM only supplies voltage to the actuator momentarily. It is important to monitor the test lamp while pressing the door lock control switch.

While pressing the tailgate release switch, monitor the test lamp.

Does the test lamp momentarily illuminate?

Yes	INSTALL a new tailgate release actuator. REFER to: Tailgate Latch Actuator .

No	REPAIR the circuit.

N11 CHECK THE BCM (BODY CONTROL MODULE) TAILGATE RELEASE ACTUATOR OUTPUT CIRCUIT FOR AN OPEN

Disconnect BCM C2280C.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Refer to C4223-1	Courtesy of FORD MOTOR COMPANY	Refer to C2280C-33

Is the resistance less than 3 ohms?

Yes

GO to N12

No	REPAIR the circuit.

N12 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all the BCM connectors.

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

Reconnect the BCM connectors and 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, Refer to BCM GUIDED ROUTINE TESTING

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