Ford Workshop Service and Repair Manuals

Inspection and Verification

Visual Inspection Chart

Symptom	Possible Sources	Action
The ignition switch is inoperative.	* Ignition switch.	* CARRY OUT the Ignition Switch Component Test. * REFER to the Wiring Diagrams.
	* Circuit(s)	* GO to Pinpoint Test A.
No power in ACC	* Ignition switch.	* CARRY OUT the Ignition Switch Component Test. REFER to the Wiring Diagrams.
	* Circuit(s)	* GO to Pinpoint Test B.
No power in RUN	* Ignition switch.	* CARRY OUT the Ignition Switch Component Test. REFER to the Wiring Diagrams.
	* Circuit(s)	* GO to Pinpoint Test C.
No power in START	* Ignition switch.	* CARRY OUT the Ignition Switch Component Test. REFER to the Wiring Diagrams.
	* Circuit(s)	* GO to Pinpoint Test D.
The multifunction switch does not operate correctly	* Switch(es)	* REFER to Section  417-01 Exterior Lighting. * REFER to Section  501-16 Wipers and Washers.
	* Circuit(s)	* REFER to Section  417-01 Exterior Lighting. * REFER to Section  501-16 Wipers and Washers.

NOTE:Use a digital multimeter for all electrical measurements.

PINPOINT TEST A : THE IGNITION SWITCH IS INOPERATIVE
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
A1: CHECK THE IGNITION SWITCH ELECTRICAL CONNECTOR
	1 Remove the steering column shrouds.
	2 Check the ignition switch electrical connector.
	Is the ignition switch connector clean and secure? Yes GO to A2. No CLEAN and SECURE the ignition switch electrical connector. TEST the system for normal operation.
A2: CHECK FOR VOLTAGE ON CIRCUIT 30 BB 9 (RD)
	1 Disconnect fuse 8 (30A).
	2 Disconnect the ignition switch C456.
	3 Connect fuse 8 (30A).
	4 Measure the voltage between the ignition switch C456 pin 4, circuit 30 BB 9 (RD) harness side and ground.
	Is the voltage greater than 10 volts? Yes VERIFY the customers concern. No REPAIR circuit 30 BB 9 (RD). TEST the system for normal operation.

PINPOINT TEST B : NO POWER IN ACC
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
B1: CHECK FOR VOLTAGE ON CIRCUIT 30 BB 9 (RD)
	1 Disconnect fuse 8 (30A).
	2 Disconnect the ignition switch C456.
	3 Connect fuse 8 (30A).
	4 Measure the voltage between the ignition switch C456 pin 4, circuit 30 BB 9 (RD) harness side and ground.
	Is the voltage greater than 10 volts? Yes REPAIR circuit 75 DA 1 (YE). REFER to Section  415-01 Audio Unit.TEST the system for normal operation. No REPAIR circuit 30 BB 9 (RD). TEST the system for normal operation.

PINPOINT TEST C : NO POWER IN RUN
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
C1: CHECK FOR VOLTAGE ON CIRCUIT 30 BB 9 (RD)
	1 Disconnect fuse 8 (30A).
	2 Disconnect the ignition switch C456.
	3 Connect fuse 8 (30A).
	4 Measure the voltage between the ignition switch C456 pin 4, circuit 30 BB 9 (RD) harness side and ground.
	Is the voltage greater than 10 volts? Yes REPAIR circuit 15 DA 1 (GN/YE). TEST the system for normal operation. No REPAIR circuit 30 BB 9 (RD). TEST the system for normal operation.

PINPOINT TEST D : NO POWER IN START
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
D1: CHECK FOR VOLTAGE ON CIRCUIT 30 BB 9 (RD)
	1 Disconnect fuse 8 (30A).
	2 Disconnect the ignition switch C456.
	3 Connect fuse 8 (30A).
	4 Measure the voltage between the ignition switch C456 pin 4, circuit 30 BB 9 (RD) harness side and ground
	Is the voltage greater than 10 volts? Yes REPAIR circuit 50 BB 16A (GY/BK). TEST the system for normal operation. No REPAIR circuit 30 BB 9 (RD). TEST the system for normal operation.

Component Test