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

WARNING: This page is about a different car, the 2022 Ford Police Interceptor Utility and 2022 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

Refer to POWER DISTRIBUTION for schematic and connector information. Refer to STARTING SYSTEM for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCM B108A:01	Start Button: General Electrical Failure	Sets continuous when the BCM detects a fault from one of the ignition switch input circuits.
BCM B108A:24	Start Button: Signal Stuck High	Sets continuous when the BCM detects a fault from one of the ignition switch input circuits.
BCM B1142:29	Ignition Status 1: Signal Invalid	Sets during the on-demand self-test when the BCM detects a fault from one of the ignition switch input circuits.
BCM B1310:12	Run/Start Control: Circuit Short To Battery	Sets when the BCM detects a short to voltage on the BCM-C run/start relay control circuit. When set, the control side of the run/start relay is disabled via the Field Effect Transistor (FET) in the BCM. Once the condition that caused the DTC to set is repaired, the BCM must pass a self-test in order for the DTC to clear and the system to resume normal operation.
BCM B1310:14	Run/Start Control: Circuit Short To Ground Or Open	The BCM continuously monitors the control side of the run/start relay in the BCM-C. This DTC is set if the BCM detects an open or a short to ground on the control side of the run/start relay. When this DTC sets, the BCM disables the control side of the RUN/START relay FET. Once the condition that caused the DTC to set is repaired, the BCM must pass a self-test in order for the DTC to clear and the system to resume normal operation.
PCM P2534:00	Ignition Switch On/Start Position Circuit Low: No Sub Type Information	This DTC sets if the PCM detects an low voltage signal from the ignition switch input circuits.
PCM P2535:00	Ignition Switch On/Start Position Circuit High: No Sub Type Information	This DTC sets if the PCM detects an high voltage signal from the ignition switch input circuits.

Possible Sources

Battery voltage concern
Fuse
Wiring, terminals or connectors
PATS concern
Push button ignition switch
BCM
PCM

Visual Inspection and Pre-checks

Inspect the battery and battery cables.
Inspect the BCM fuse 19 (5A).

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

H1 CHECK THE VEHICLE BATTERY
- Carry out the Battery Condition Test. Refer to the appropriate Battery System article for the procedure.
Is the battery OK?

Yes GO to H2

No CORRECT the battery condition.

H2 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.
- Check and record BCM and PCM DTCs.
Is DTC B1310:12 or B1310:14 present?

Yes GO to H17

No GO to H3

H3 CHECK FOR IGNITION ON MODE
- NOTE: If DTC B108A:01, B108A:24 or B1142:29 is present, go to step H4.
  
  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 H17

No GO to H4

H4 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 H5

H5 CHECK THE IGNITION SWITCH 1 (START_STOP_1) PID (PARAMETER IDENTIFICATION)

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

Access the BCM and monitor the START_STOP_1PID 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 H12

No	VERIFY BCM fuse 19 (5A) is OK. If OK, GO to H6 If not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible causes of the circuit short.

H6 CHECK THE START/STOP 1 INPUT CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect Push Button Ignition Switch C2195 .

Disconnect BCM C2280B .

Disconnect PCM C1381B (2.3L), C1551B (3.0L), C175B (3.3L).

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 H7

H7 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 H8

No	REPAIR the circuit.

H8 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).

Access the BCM and monitor the START_STOP_1PID

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 H9

H9 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 H11

GO to H10

H10 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-11

Is the resistance less than 3 ohms?

Yes

GO to H24

No	REPAIR the circuit.

H11 CHECK THE BCM (BODY CONTROL MODULE) START/STOP 1 INPUT CIRCUIT FOR AN OPEN

Disconnect BCM C2280B .

Disconnect PCM C1381B (2.3L), C1551B (3.0L), C175B (3.3L).

Measure:

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

2.3L GTDI

Positive Lead	Measurement / Action	Negative Lead
C1381B-45	Courtesy of FORD MOTOR COMPANY	C2195-1

3.0L GTDI

Positive Lead	Measurement / Action	Negative Lead
C1551B-22	Courtesy of FORD MOTOR COMPANY	C2195-1

3.3L TIVCT

Positive Lead	Measurement / Action	Negative Lead
C175B-22	Courtesy of FORD MOTOR COMPANY	C2195-1

Is the resistance less than 3 ohms?

Yes	If a BCM DTC was recorded, GO to H23 If a PCM DTC was recorded, GO to H24

No	REPAIR the circuit.

H12 CHECK THE IGNITION SWITCH 2 (START_STOP_2) PID (PARAMETER IDENTIFICATION)
- Using a diagnostic scan tool, view the BCM Parameter Identification (PIDs).
- Access the BCM and monitor the START_STOP_2PID 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 H23

No GO to H13

H13 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 H14

No	REPAIR the circuit.

H14 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).

Access the BCM and monitor the START_STOP_2PID

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 H15

GO to H16

H15 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.

H16 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 H23

No	REPAIR the circuit.

H17 CHECK THE BCM-C RUN/START RELAY CONTROL CIRCUIT FOR A FOR A SHORT TO GROUND

Ignition OFF.

Disconnect BCM C2280F .

Disconnect BCM-C C1035A .

Measure:

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

Is the resistance less than 3 ohms?

Yes	REPAIR the circuit.

GO to H18

H18 CHECK THE BCM-C RUN/START RELAY CONTROL CIRCUIT FOR A FOR A SHORT TO VOLTAGE

Ignition OFF.

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 H19

H19 CHECK THE BCM-C RUN/START RELAY CONTROL CIRCUIT FOR A FOR AN OPEN

Ignition OFF.

Disconnect BCM-C C1035A .

Disconnect BCM C2280F. Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280F-25	Courtesy of FORD MOTOR COMPANY	C1035A-38

Is the resistance less than 3 ohms?

Yes

GO to H20

No	REPAIR the circuit.

H20 CARRY OUT A NETWORK TEST
- Connect BCM C2280F .
- Connect BCM-C C1035A .
- Using a diagnostic scan tool, perform the network test.
Do the IPC and the BCM pass the network test?

Yes GO to H21

No REFER to: Communications Network

H21 CHECK VOLTAGE SUPPLY TO THE BCM (BODY CONTROL MODULE)

Ignition OFF.

Disconnect BCM C2280H .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280H	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to H23

GO to H22

H22 CHECK THE BCM (BODY CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280H-1	Courtesy of FORD MOTOR COMPANY	C1035A-30

Is the resistance LESS than 3 ohms?

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, REPLACE the BCM-C. TEST the system for normal operation. If the concern is still present, GO to H23

No	REPAIR the circuit.

H23 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, 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.

H24 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Disconnect and inspect all PCM 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 PCM 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, INSTALL a new PCM. Refer to the appropriate Removal and Installation procedure .

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.