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

WARNING: This page is about a different car, the 2018 Lincoln Navigator. 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 If DTC B108A:01, B108A:24, B108A:9E or B1142:29 is present, GO to F4 Otherwise, GO to F2

No CORRECT the battery condition.

F2 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B1310:12 OR B1310:14
- Using a diagnostic scan tool, carry out the BCM self-test.
Is DTC B1310:12 or B1310:14 present?

Yes GO to F19

No GO to F3

F3 CHECK FOR IGNITION ON MODE
- 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 F19

No GO to F4

F4 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: Perimeter Anti-Theft Alarm .

No GO to F5

F5 CHECK THE IGNITION SWITCH 1 (START_STOP_1) PID (PARAMETER IDENTIFICATION)

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

Monitor the BCM PID 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 F13

No	VERIFY BCM fuse 18 (5A) is OK. If OK, GO to F6 If not OK, Refer to the Wiring Diagram Information to identify the possible causes of the circuit short.

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

Disconnect BCM C2280B .

Disconnect BCM C2280A .

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 F7

F7 CHECK THE START/STOP 1 INPUT CIRCUIT FOR A SHORT TO THE START/STOP 2 INPUT CIRCUIT

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195-1	Courtesy of FORD MOTOR COMPANY	C2280B-5

Is the resistance greater than 10, 000 ohms?

Yes

GO to F8

No	REPAIR the circuit.

F8 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 F9

No	REPAIR the circuit.

F9 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 BCM PID 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 .

GO to F10

F10 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 F12

GO to F11

F11 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.

F12 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.

F13 CHECK THE IGNITION SWITCH 2 (START_STOP_2) PID (PARAMETER IDENTIFICATION)
- Using a diagnostic scan tool, view the BCM Parameter Identification (PIDs).
- Monitor the BCM PID 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 F14

F14 CHECK THE BCM (BODY CONTROL MODULE) START/STOP 2 INPUT CIRCUIT FOR A SHORT TO VOLTAGE

Measure:

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

Is there any voltage present?

Yes	REPAIR the circuit.

GO to F15

F15 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 F16

No	REPAIR the circuit.

F16 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 BCM PID 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 F17

GO to F18

F17 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 .

No	REPAIR the circuit.

F18 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.

F19 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 18 (5A) is OK. If OK, GO to F20 If not OK, Refer to the Wiring Diagram Information to identify the possible cause of the circuit short.

No	REFER to: MODULE COMMUNICATIONS NETWORK (1 OF 2) or MODULE COMMUNICATIONS NETWORK (2 OF 2) .

F20 CHECK FOR AN INTERMITTENT COMMUNICATION CONCERN

Using a diagnostic scan tool, retrieve the Continuous Mode Diagnostic Trouble Codes (CMDTCs) from all modules.

Are multiple communication Diagnostic Trouble Codes (DTCs) set in multiple modules?

Yes	DIAGNOSE an intermittent network concern. REFER to:MODULE COMMUNICATIONS NETWORK (1 OF 2) or MODULE COMMUNICATIONS NETWORK (2 OF 2) .

No	If DTC B1310:12 is present, GO to F24Otherwise, GO to F21

F21 CHECK THE RUN/START RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect negative battery cable.

Disconnect BCM C2280F .

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 F25

GO to F22

F22 ISOLATE THE RUN/START RELAY CONTROL CIRCUIT SHORT TO GROUND

Disconnect BJB C1035C .

Measure:

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

Is the resistance greater than 10, 000 ohms?

Yes	INSTALL a new BJB.

No	REPAIR the circuit.

F23 CHECK THE RUN/START RELAY CONTROL CIRCUIT FOR AN OPEN

Disconnect BJB C1035C .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280F-25	Courtesy of FORD MOTOR COMPANY	C1035C-8

Is the resistance less than 3 ohms?

Yes

GO to F25

No	REPAIR the circuit.

F24 CHECK THE RUN/START RELAY CONTROL CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect BCM C2280F .

Disconnect BJB C1035C .

Measure:

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

Is any voltage present?

Yes	REPAIR the circuit.

No	INSTALL a new BJB

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

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, BCM guided routine is not applicable for this vehicle and market. Replace the component that was faulted through service information diagnosis.

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.