Pinpoint Test F : No Power In On - Push Button Ignition Switch

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.

F1 CHECK THE VEHICLE BATTERY
- Carry out the Battery Condition Test. REFER to: Battery .
Is the battery OK?

Yes GO to F2

No CORRECT the battery condition.

F2 CHECK FOR IGNITION ON MODE
- NOTE: If DTC B108A:01, B108A:24 or B1142:29 is present, go to F4.
  
  Press and release the START/STOP button while monitoring the ignition mode indicator at the top of the button.
Does the ignition mode indicator flash on and off continuously?

Yes GO to F16

No GO to F3

F3 CHECK FOR A PATS (PASSIVE ANTI-THEFT SYSTEM) CONCERN
- Press the START/STOP button while monitoring the message center.
Does No key detected display in the message center?

Yes REFER to: Passive Anti-Theft System (PATS) .

No GO to F4

F4 CHECK THE IGNITION SWITCH 1 (START_STOP_1) PID (PARAMETER IDENTIFICATION)

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

Monitor the BCMPID START_STOP_1 while pressing and releasing the START/STOP button.

Does the PID change state when the START/STOP button is pressed and released?

Yes

GO to F11

No	VERIFY BCM fuse 18 (5A) is OK. If OK, GO to F5 If not OK, REFER to OEM Wiring Diagrams to identify the possible causes of the circuit short.

F5 CHECK THE START/STOP 1 INPUT CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect BCM C2280B.

Disconnect PCM B connector.

Disconnect Push Button Ignition Switch C2195.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195-1	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.

GO to F6

F6 CHECK THE START/STOP 1 INPUT CIRCUIT FOR A SHORT TO GROUND

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to F7

No	REPAIR the circuit.

F7 BYPASS THE PUSH BUTTON IGNITION SWITCH WHILE MONITORING THE IGNITION SWITCH 1 (START_STOP_1) PID (PARAMETER IDENTIFICATION)

Connect BCM C2280B.

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

Monitor the BCMPID START_STOP_1.

Connect:

Lead 1	Measurement / Action	Lead 2
C2195-1	Courtesy of FORD MOTOR COMPANY	C2195-4

Remove the fused jumper wire.

Does the PID indicate the START/STOP button is pressed with the fused jumper wire connected?

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

GO to F8

F8 CHECK FOR VOLTAGE TO THE IGNITION SWITCH

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195-4	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to F10

GO to F9

F9 CHECK THE IGNITION SWITCH VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Disconnect BCM C2280A.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195-4	Courtesy of FORD MOTOR COMPANY	C2280A-12

Is the resistance less than 3 ohms?

Yes

GO to F25

No	REPAIR the circuit.

F10 CHECK THE BCM (BODY CONTROL MODULE) START/STOP 1 INPUT CIRCUIT FOR AN OPEN

Disconnect BCM C2280B.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195-1	Courtesy of FORD MOTOR COMPANY	C2280B-51

Is the resistance less than 3 ohms?

Yes

GO to F25

No	REPAIR the circuit.

F11 CHECK THE IGNITION SWITCH 2 (START_STOP_2) PID (PARAMETER IDENTIFICATION)
- Using a diagnostic scan tool, view the BCM Parameter Identification (PIDs).
- Monitor the BCMPID START_STOP_2 while pressing and releasing the START/STOP button.
Does the PID change state when the START/STOP button is pressed and released?

Yes GO to F25

No GO to F12

F12 CHECK THE BCM (BODY CONTROL MODULE) START/STOP 2 INPUT CIRCUIT FOR A SHORT TO GROUND

Disconnect BCM C2280B.

Disconnect Push Button Ignition Switch C2195.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195-6	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to F13

No	REPAIR the circuit.

F13 BYPASS THE PUSH BUTTON IGNITION SWITCH WHILE MONITORING THE IGNITION SWITCH 2 (START_STOP_2) PID (PARAMETER IDENTIFICATION)

Connect BCM C2280B.

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

Monitor the BCMPID START_STOP_2.

Connect:

Lead 1	Measurement / Action	Lead 2
C2195-6	Courtesy of FORD MOTOR COMPANY	Ground

Remove the fused jumper wire.

Does the PID indicate the START/STOP button is pressed with the fused jumper wire connected?

Yes

GO to F14

GO to F15

F14 CHECK THE IGNITION SWITCH GROUND CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195-4	Courtesy of FORD MOTOR COMPANY	C2195-3

Is the voltage greater than 11 volts?

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

No	REPAIR the circuit.

F15 CHECK THE BCM (BODY CONTROL MODULE) START/STOP 2 INPUT CIRCUIT FOR AN OPEN

Disconnect BCM C2280B.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195-6	Courtesy of FORD MOTOR COMPANY	C2280B-5

Is the resistance less than 3 ohms?

Yes

GO to F25

No	REPAIR the circuit.

F16 CARRY OUT A NETWORK TEST

Using a diagnostic scan tool, carry out the network test.

Does the IPC and the BCM pass the network test?

Yes	VERIFY the BCM fuse 34 (30A) is OK. If OK, GO to F17 If not OK, REFER to OEM Wiring Diagrams to identify the possible cause of the circuit short.

No	REFER to: Communications Network .

F17 CHECK FOR BCM (BODY CONTROL MODULE) DTCS
- Using a diagnostic scan tool, carry out the BCM self-test.
Are DTC B1310:12 or B1310:14 present?

Yes GO to F19

No GO to F18

F18 CHECK FOR AN INTERMITTENT COMMUNICATION CONCERN
- Using a diagnostic scan tool, retrieve the Continuous Mode Diagnostic Trouble Codes (CM DTCs) from all modules.
Are multiple communication Diagnostic Trouble Codes (DTCs) set in multiple modules?

Yes DIAGNOSE an intermittent network concern. REFER to: Communications Network .

No GO to F25

F19 CHECK THE BJB (BATTERY JUNCTION BOX) RUN/START RELAY
- Ignition OFF.
- Disconnect BJB Run/Start Relay.
- Substitute a known good relay.
- Ignition ON.
- Using a diagnostic scan tool, carry out the BCM self-test.
Do the systems in question now operate?

Yes REMOVE the known good relay. INSTALL a new BJB run/start relay.

No REMOVE the known good relay. GO to F20

F20 CHECK THE BJB (BATTERY JUNCTION BOX) RUN/START RELAY VOLTAGE SUPPLY

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY Run/start relay, pin socket 1	Courtesy of FORD MOTOR COMPANY	Ground
Courtesy of FORD MOTOR COMPANY Run/Start relay, pin socket 3	Courtesy of FORD MOTOR COMPANY	Ground

Are the voltages greater than 11 volts?

Yes

GO to F21

No	INSTALL a new BJB.

F21 CHECK THE BJB (BATTERY JUNCTION BOX) RUN/START RELAY OUTPUT CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY Run/Start relay, pin socket 3	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY Run/Start relay, pin socket 5

Do the systems in question now operate?

Yes	REMOVE the fused jumper wire. GO to F22

No	REMOVE the fused jumper wire. REPAIR the circuit or INSTALL a new BJB as necessary.

F22 CHECK THE RUN/START RELAY CONTROL CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect BCM C2280F.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280F-25	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.

GO to F23

F23 CHECK THE RUN/START RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280F-25	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to F24

No	REPAIR the circuit.

F24 CHECK THE RUN/START RELAY CONTROL CIRCUIT FOR AN OPEN

Connect BJB Run/Start relay.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280F-25	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to F25

No	REPAIR the circuit.

F25 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all BCM 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 connectors and all other previously disconnected 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	Refer to BCM Guided Routine .

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.