Pinpoint Test I: The Ignition Switch (Push Button Start) Illumination Is Inoperative Or Always On

Refer to CLUSTER AND PANEL ILLUMINATION for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Instrument Panel and Interior Switches Illumination - System Operation and Component Description .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCM B1314:11	White Lighting (Reflective Controls) Illumination Output: Circuit Short To Ground	This DTC sets in continuous memory and on-demand when the BCM detects a short to ground from the backlighting illumination output circuit.
BCM B1314:15	White Lighting (Reflective Controls) Illumination Output: Circuit Short To Battery Or Open	This DTC sets in continuous memory and on-demand when the BCM detects a short to voltage or an open from the backlighting illumination output circuit.

Possible Sources

Wiring, terminals or connectors
Ignition switch
BCM

I1 INSPECT ALL OTHER DIMMABLE ILLUMINATION SOURCES
- Ignition ON.
- Place the headlamp switch in the PARKING LAMPS ON position.
- While pressing the instrument panel dimmer switch up and down, observe all other dimmable illumination sources.
Do all other dimmable illumination sources increase and decrease in brightness?

Yes If the ignition switch illumination is always on, GO to I2If the ignition switch illumination is inoperative, GO to I3

No GO to Pinpoint Test A

I2 CHECK THE BCM (BODY CONTROL MODULE) IGNITION SWITCH (PUSH BUTTON START) ILLUMINATION OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect BCM C2280B.
- Ignition ON.
Does the ignition switch continue to illuminate?

Yes REPAIR the circuit.

No GO to I7

I3 CHECK THE VOLTAGE TO THE IGNITION SWITCH (PUSH BUTTON START)

Disconnect Start/stop switch C2195.
NOTE: Leave the Ignition ON when disconnecting the Ignition Switch.

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

Place the headlamp switch in the PARKING LAMPS ON position.

Press the instrument panel dimmer up switch until all other dimmable illumination is at its brightest intensity.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195 Pin 5	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to I4

GO to I5

I4 CHECK THE IGNITION SWITCH (PUSH BUTTON START) GROUND CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195 Pin 5	Courtesy of FORD MOTOR COMPANY	C2195 Pin 3

Is the voltage greater than 11 volts?

Yes	INSTALL a new ignition switch (push button start). REFER to: Ignition Switch - Vehicles With: Keyless Vehicle System .

No	Repair the circuit.

I5 CHECK THE BCM (BODY CONTROL MODULE) ILLUMINATION OUTPUT CIRCUIT FOR AN OPEN

Connect Start/stop switch C2195.

Ignition OFF.

Disconnect Start/stop switch C2195.

Disconnect BCM C2280B.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195 Pin 5	Courtesy of FORD MOTOR COMPANY	C2280B Pin 44

Is the resistance less than 3 ohms?

Yes

GO to I6

No	Repair the circuit.

I6 CHECK THE BCM (BODY CONTROL MODULE) DIMMABLE VOLTAGE OUTPUT CIRCUIT FOR A SHORT TO GROUND

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195 Pin 5	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to I7

No	Repair the circuit.

I7 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all BCM 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 BCM and related in-line connectors and all previously disconnected illumination system connectors. Make sure all connectors seat and latch correctly.

Operate the system to 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 BCM. REFER to: Body Control Module (BCM) .

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.