ford Workshop Repair Guides

Ford Workshop Service and Repair Manuals

ABOUT US
Diagnosis and Testing|Removal and Installation > < Steering Column Switches

Cougar 1999 (08.1998-01.2001)

Steering Column Switches - Steering Column Switches Cougar 1999 (08/1998-01/2001)
Diagnosis and Testing

General Equipment
Digital Multimeter

Electrical Schematics Reference(s)

Refer to the Wiring Diagram Section 303-06, Starting System for schematic and electrical information.

Refer to the Wiring Diagram Section 417-01, Exterior Lighting for schematic and electrical information.

Refer to the Wiring Diagram Section 501-16, Wiper and Washer for schematic and electrical information.

Refer to the Wiring Diagram Section 700-02, Power Distribution for schematic and electrical information.

Inspection and Verification

  1. Verify the customer concern by operating the system.
  1. Visually inspect for obvious signs of electrical damage.
  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. If the concern is not visually evident, verify the symptom and refer to the Symptom Chart.

Visual Inspection Chart

Electrical
  • Fuse(s)
  • Wiring harness
  • Loose or corroded connectors
  • Ignition switch
  • Turn signal/flash to pass switch
  • Wiper/washer switch

Symptom Chart

Symptom Possible Sources Action
The ignition switch is inoperative
*
Ignition switch.
*
Circuit.
*
Fuse.
*
GO to Pinpoint Test A.
No power in ACC
*
Ignition switch.
*
Circuit(s).
*
GO to Pinpoint Test B.
No power in RUN
*
Ignition switch.
*
Circuit(s).
*
Ignition relay diode.
*
Ignition relay.
*
GO to Pinpoint Test C.
No power in START
*
Ignition switch.
*
Circuit.
*
Starter relay diode.
*
Starter relay.
*
GO to Pinpoint Test D.

Pinpoint Tests

PINPOINT TEST A : THE IGNITION SWITCH IS INOPERATIVE
TEST CONDITIONS DETAILS/RESULTS/ACTIONS
A1: CHECK THE IGNITION SWITCH CONNECTOR
1
Remove the steering column shrouds and check the ignition switch connector.

Is the ignition switch connector clean and secure?
Yes
GO to A2.
No
CLEAN and SECURE the ignition switch connector as required. TEST the system for normal operation.
A2: CHECK THE BATTERY JUNCTION BOX FUSE 10 (20A)
1
Ignition switch in position 0.
2
CHECK Fuse 10 (20A).
3
Check the fuse 10 (20A).

Is fuse OK?
Yes
GO to A3.
No
INSTALL a new fuse 10 (20A). TEST the system for normal operation. If the fuse fails again, CHECK for short to ground. REPAIR as necessary.
A3: CHECK FOR OPEN ON CIRCUIT 30-BB9 (RD)
1
Disconnect Fuse 10 (20A).
2
Disconnect Ignition switch C456.

3
Measure the resistance between the ignition switch, C456 pin 1, circuit 30-BB9 (RD) harness side and fuse 10 (20A) loadside, circuit 30-BB9 (RD) harness side.

Is the resistance less than 5 ohms?
Yes
INSTALL a new ignition switch. REFER to the procedure in this Section. TEST the system for normal operation.
No
REPAIR the circuit 30-BB9 (RD). TEST the system for normal operation.

PINPOINT TEST B : NO POWER IN ACC
TEST CONDITIONS DETAILS/RESULTS/ACTIONS
B1: CHECK THE RADIO AND CLOCK OPERATION
1
Ignition switch in position I.
2
Check the radio and clock operation.

Do the radio and clock operate?
Yes
INSTALL a new ignition switch. REFER to the procedure in this Section. TEST the system for normal operation.
No
GO to B2.
B2: CHECK FOR OPEN ON CIRCUIT 75-DA1 (YE)
1
Disconnect Fuse 10 (20A).
2
Disconnect Ignition switch C456.
3
Disconnect Radio C443b.

4
Measure the resistance between the ignition switch C456 pin 8, circuit 75-DA1 (YE) harness side and radio C443b pin 3, circuit 75-MD15 (YE/GN) harness side.

Is the resistance less than 5 ohms?
Yes
GO to B3.
No
REPAIR the circuit 75-DA1 (YE), 75-MD15 (YE/GN). TEST the system for normal operation.
B3: CHECK THE IGNITION SWITCH
1
Carry out the ignition switch component test, refer to the wiring diagram cell 700-09.

Does the ignition switch test OK?
Yes
REFER to Section  415-00 Information and Entertainment System - General Information.
No
INSTALL a new ignition switch. REFER to the procedure in this Section. TEST the system for normal operation.

PINPOINT TEST C : NO POWER IN RUN
TEST CONDITIONS DETAILS/RESULTS/ACTIONS
C1: CHECK THE RADIO AND CLOCK OPERATION
1
Ignition switch in position I.
2
Check the radio and clock operation.

Do the radio and clock operate?
Yes
GO to C2.
No
GO to C4.
C2: CHECK THE IGNITION SWITCH
1
Carry out the ignition switch component test, refer to the wiring diagram.

Does the ignition switch test OK?
Yes
GO to C3.
No
INSTALL a new ignition switch. REFER to the procedure in this Section. TEST the system for normal operation.
C3: CHECK FOR OPEN ON CIRCUITS 15-DA1 (GN) AND 15-DA2 (GN/BU)
1
Disconnect F10 (20A).
2
Disconnect Ignition switch C456.

3
Measure the resistance between the ignition switch C456 pin 4 harness side and the ignition relay C59 pin 2 in the central junction box (CJB).

Is the resistance greater than 10,000 ohms?
Yes
REPAIR the circuit 15-DA1 (GN) and 15-DA2 (GN/BU). TEST the system for normal operation.
No
REFER to Section  303-06 Starting System.
C4: CHECK THE BATTERY JUNCTION BOX FUSE 10 (20A)
1
CHECK .
2
Check the fuse 10 (20A).

Is the fuse OK?
Yes
GO to C5.
No
INSTALL a new fuse. TEST the system for normal operation. If the fuse fails again REPAIR circuit 30-BB9 (RD).
C5: CHECK FOR OPEN ON CIRCUIT 30-BB9 (RD)
1
Disconnect Ignition switch C456.

2
Measure the resistance between the ignition switch C456 pin 1 circuit 30 BB9 (RD) and fuse 10 (20A) loadside circuit 30-BB9 (RD).

Is the resistance less than 5 ohms?
Yes
INSTALL a new ignition switch. REFEr to the procedure in this section. TEST the system for normal operation.
No
REPAIR the circuit 30-BB9 (RD). TEST the system for normal operation.

PINPOINT TEST D : NO POWER IN START
TEST CONDITIONS DETAILS/RESULTS/ACTIONS
D1: CHECK THE IGNITION SWITCH
1
Carry out the ignition switch component test, refer to wiring diagram.

Does the ignition switch test OK?
Yes
GO to D2.
No
INSTALL a new ignition switch. REFER to the procedure in this Section. TEST the system for normal operation.
D2: CHECK FOR OPEN ON CIRCUIT 50-BB11A (GY/WH)
NOTE:
NOTE:Make sure that the ground location is clean before testing.
1
Disconnect Starter relay C52.
2
Ignition switch in position II.

3
Measure the voltage between the starter relay C52 pin 1, circuit 50-BB11A (GY/WH) and ground.

Is the voltage greater that 10 volts?
Yes
REFER to Section  303-06 Starting System.
No
REPAIR the circuit 50-BB11A (GY/WH). CHECK the starter relay diode for continuity. TEST the system for normal operation.

Component Tests

Ignition Switch Continuity Check

Refer to the Wiring Diagram.

Diagnosis and Testing|Removal and Installation > < Steering Column Switches