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

D1 CHECK FOR BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: It may be necessary to use a tear tag or PCM part number to start a vehicle session on the diagnostic scan tool.

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

Are any BCM Diagnostic Trouble Codes (DTCs) present?

Yes	For DTC B1310:14, GO to D2For DTC B108A:01, B108A:24 or B1142:29, GO to D5 For all other BCM Diagnostic Trouble Codes (DTCs), REFER to the BCM DTC Chart .

GO to D5

D2 CHECK THE BJB (BATTERY JUNCTION BOX) RUN/START RELAY
- Ignition OFF.
- Disconnect BJB Run/Start Relay.
- Carry out the appropriate relay component test. Refer to Component Testing for schematic and connector information.
Is the relay OK?

Yes GO to D3

No INSTALL a new BJB run/start relay.

D3 CHECK THE RUN/START RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND

Disconnect BCM C2280C .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280C-25	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes	REPAIR the circuit.

GO to D4

D4 CHECK THE BJB (BATTERY JUNCTION BOX) RUN/START RELAY CONTROL CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280C-25	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY BJB run/start relay, cavity 2

Is the resistance less than 3 ohms?

Yes

GO to D20

No	REPAIR the circuit.

D5 CHECK THE KEY NOT DETECTED MESSAGE
- With the passive key within the passenger compartment, press the START/STOP button.
Does the message center display Key not detected?

Yes DIAGNOSE the PATS. Refer to: Locks, Latches and Entry Systems .

No GO to D6

D6 CHECK VEHICLE BATTERY

Carry out the Battery Condition Test. Refer to the appropriate Battery and Charging System article for the procedure.

Is the battery OK?

Yes

GO to D7

No	CORRECT the battery condition and VERIFY correct charging operation. Refer to the appropriate Battery and Charging System article for the procedure.

D7 CHECK FOR IGNITION ON MODE

NOTE: The airbag warning indicator in the message center only illuminates and proves out when the vehicle successfully enters ON mode.
- With the passive key in the vehicle, press the ignition switch for at least one second while monitoring the airbag warning indicator in the message center.
Did the airbag warning indicator illuminate for approximately 6 seconds and then go out?

Yes GO to D17

No GO to D8

D8 CARRY OUT A NETWORK TEST
- Using a diagnostic scan tool, perform the network test.
Does the BCM pass the network test?

Yes GO to D9

No REFER to: Communications Network .

D9 CHECK THE BCM (BODY CONTROL MODULE) IGNITION SWITCH PARAMETER IDENTIFICATIONS (PIDS)
- Using a diagnostic scan tool, view BCM Parameter Identification (PIDs).
- Using a diagnostic scan tool, monitor the following Parameter Identifications (PIDs) while pressing the START/STOP button:
  - Engine Start / Stop Button Circuit 1 (Start_Stop_1)
  - Engine Start / Stop Button Circuit 2 (Start_Stop_2)
Did both PIDs change state when the switch was pressed?

Yes GO to D20

No GO to D10

D10 CHECK THE PUSH BUTTON IGNITION SWITCH
- Disconnect Push Button Ignition Switch C2195 .
- Carry out the push button ignition switch component test. Refer to Component Testing for schematic and connector information.
Does the ignition switch pass the test?

Yes GO to D11

No INSTALL a new ignition switch. Refer to: Ignition Switch - Vehicles With: Push Button Start .

D11 CHECK THE PUSH BUTTON IGNITION SWITCH VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

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 D12

No	VERIFY BCM fuse 18 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the OEM Electrical Wiring Diagram Introduction (Except Hybrid/Energi) to identify the possible cause of the circuit short.

D12 CHECK THE PUSH BUTTON IGNITION SWITCH GROUND CIRCUIT FOR AN OPEN

Measure:

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

Is the resistance less than 3 ohms?

Yes

GO to D13

No	REPAIR the circuit.

D13 CHECK THE START/STOP 1 CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect BCM C2280G .

Disconnect PCM C1381B (2.0 GTDI).

Disconnect PCM C175B (2.0L HEV).

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 D14

D14 CHECK THE PUSH BUTTON IGNITION SWITCH CIRCUITS TO THE BCM (BODY CONTROL MODULE) FOR A SHORT TO GROUND

Measure:

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

Are the resistances greater than 10, 000 ohms?

Yes

GO to D15

No	REPAIR the circuit in question.

D15 CHECK THE PUSH BUTTON IGNITION SWITCH CIRCUITS TO THE BCM (BODY CONTROL MODULE) FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195-6	Courtesy of FORD MOTOR COMPANY	C2280G-5
C2195-1	Courtesy of FORD MOTOR COMPANY	C2280G-51

Are the resistances less than 3 ohms?

Yes

GO to D16

No	REPAIR the circuit in question.

D16 CHECK FOR A SHORT BETWEEN THE PUSH BUTTON IGNITION SWITCH CIRCUITS

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2195-1	Courtesy of FORD MOTOR COMPANY	C2195-6

Is the resistance greater than 10, 000 ohms?

Yes

GO to D20

No	REPAIR the circuits.

D17 ATTEMPT VEHICLE START WHILE MONITORING THE MESSAGE CENTER
- With the vehicle in PARK (automatic transmission) or NEUTRAL (automatic or manual transmission) and the passive key in the vehicle, press the brake pedal and then press the ignition switch while monitoring the message center.
Does the vehicle start?

Yes DIAGNOSE the no start concern. Refer to Engine Controls - Introduction (Except Diesel & Hybrid) .

No GO to D18

D18 CARRY OUT A NETWORK TEST
- Using a diagnostic scan tool, perform the network test.
Does the PCM and BCM pass the network test?

Yes GO to D19

No REFER to: Communications Network .

D19 CHECK FOR PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
- Enter the following diagnostic mode on the diagnostic scan tool: BCM Self-Test.
- Using a diagnostic scan tool, perform the PCM self-test.
Are any PCM Diagnostic Trouble Codes (DTCs) present?

Yes Refer to the appropriate Engine article for the procedure.

No GO to D20

D20 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 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 Hardware Testing (Except Hybrid/Energi) .

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.