Pinpoint Test C : No Power In On - Conventional Ignition Switch

C1 PERFORM A NETWORK TEST
- Using a diagnostic scan tool, perform the network test.
Does the IPC pass the network test?

Yes GO to C2

No DIAGNOSE a network communication concern.REFER to: Communications Network .

C2 CHECK THE IGNITION SWITCH (IGN_SW_RUN) PID (PARAMETER IDENTIFICATION)
- Ignition ON.
- 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, view BCM Parameter Identifications (PIDs).
- Using a diagnostic scan tool, monitor the BCM PID IGN_SW_RUN.
Does the PID indicate Active?

Yes GO to C5

No GO to C3

C3 CHECK FOR VOLTAGE TO THE BCM (BODY CONTROL MODULE)

Ignition OFF.

Disconnect BCM C2280C .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280C-43	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to C18

GO to C4

C4 CHECK THE IGNITION ON-DESIGNATED INPUT CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect Ignition Switch C250 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C250-1	Courtesy of FORD MOTOR COMPANY	C2280C-43

Is the resistance less than 3 ohms?

Yes	INSTALL a new ignition switch.REFER to: Ignition Switch .

No	REPAIR the circuit.

C5 CHECK THE REAR WINDOW WIPER OPERATION
- Observe the rear window wiper while placing the wiper/washer switch to the rear wiper INT 2 position and then off.
Does the rear window wiper operate?

Yes GO to C6

No GO to C12

C6 CHECK THE RJB (REAR JUNCTION BOX) ACCESSORY RELAY
- Ignition OFF.
- Disconnect RJB Accessory Relay.
- Substitute a known good relay.
- Ignition ON.
- Check the operation of the front heated seats, the roof opening panel, the parking aid system or the DC/AC inverter.
Does the system now operate?

Yes REMOVE the known good relay. INSTALL a new RJB accessory relay.

No REMOVE the known good relay. GO to C7

C7 CHECK THE RJB (REAR JUNCTION BOX) ACCESSORY RELAY COIL VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY RJB Accessory Relay, Pin 1	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to C8

No	VERIFY the high current battery fuse (150A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams information to identify the possible causes of the circuit short.

C8 CHECK THE RJB (REAR JUNCTION BOX) ACCESSORY RELAY BJB (BATTERY JUNCTION BOX) SUPPLIED VOLTAGE CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY RJB Accessory Relay, Pin 3	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to C9

No	REPAIR the circuit.

C9 CHECK THE RJB (REAR JUNCTION BOX) ACCESSORY RELAY OUTPUT CIRCUIT FOR AN OPEN

Connect:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY RJB Accessory Relay, Pin 3	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY RJB Accessory Relay, Pin 5

Ignition ON.

Check the operation of the front heated seats, the roof opening panel, the parking aid system or the DC/AC inverter.

Does the system now operate?

Yes	REMOVE the fused jumper wire. GO to C10

No	REMOVE the fused jumper wire. REPAIR the circuit.

C10 CHECK THE RJB (REAR JUNCTION BOX) ACCESSORY RELAY COIL CONTROL CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect BCM C2280B .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY RJB Accessory Relay, Pin 2	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.

GO to C11

C11 CHECK THE RJB (REAR JUNCTION BOX) ACCESSORY RELAY COIL CONTROL CIRCUIT FOR AN OPEN

Ignition OFF.

Connect:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY RJB Accessory Relay, Pin 2	Courtesy of FORD MOTOR COMPANY	C2280B-41

Is the resistance less than 3 ohms?

Yes

GO to C18

No	REPAIR the circuit.

C12 CHECK THE IGNITION RELAY
- Ignition OFF.
- Disconnect Ignition Relay.
- Substitute a known good relay.
- Ignition ON.
- Observe the rear window wiper while placing the wiper/washer switch to the rear wiper INT 2 position and then off.
Does the rear window wiper operate?

Yes REMOVE the known good relay. INSTALL a new ignition relay.

No REMOVE the known good relay. GO to C13

C13 CHECK THE IGNITION RELAY COIL VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY Ignition Relay, Pin 1	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to C14

No	VERIFY the BJB fuse 24 (5A) is OK. If OK, REPAIR the circuit for an open. If not OK, REFER to the Wiring Diagrams information to identify the possible causes of the circuit short.

C14 CHECK THE BCM (BODY CONTROL MODULE) CONTROL OF THE IGNITION RELAY COIL CIRCUIT

NOTE: The following pinpoint test step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250-300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

Connect:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY Ignition Relay, Pin 1	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY Ignition Relay, Pin 2

Ignition ON.

Does the test lamp illuminate?

Yes	DISCONNECT the test lamp. GO to C15

No	DISCONNECT the test lamp. GO to C16

C15 CHECK THE IGNITION RELAY BJB (BATTERY JUNCTION BOX) SUPPLIED VOLTAGE CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY Ignition Relay, Pin 3	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes	REPAIR the ignition relay output circuit (CDC21 (GN/BN)) for an open.

No	VERIFY the high current BJB fuse 1 (80A) is OK. If OK, REPAIR the ignition relay BJB voltage supply circuit (SDC02 (RD)) for an open. If not OK, REFER to the Wiring Diagrams information to identify the possible causes of the circuit short.

C16 CHECK THE IGNITION RELAY COIL CONTROL CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect BCM C2280D .

Connect:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY Ignition Relay, Pin 3	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY Ignition Relay, Pin 5

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY Ignition Relay, Pin 2	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REMOVE the fused jumper wire. REPAIR the circuit.

No	REMOVE the fused jumper wire. GO to C17

C17 CHECK THE IGNITION RELAY COIL CONTROL CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY Ignition Relay, Pin 2	Courtesy of FORD MOTOR COMPANY	C2280D-14

Is the resistance less than 3 ohms?

Yes

GO to C18

No	REPAIR the circuit.

C18 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 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, 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.