ford Workshop Repair Guides

Ford Workshop Service and Repair Manuals

Headlamp Leveling - Vehicles Built Up To: 02-2005, Convertible > < Reversing Lamps - Vehicles Built From: 02-2005, Convertible
Exterior Lighting - Reversing Lamps—Vehicles Built Up To: 02/2005, Convertible Streetka 2003.5 (01/2003-07/2005)
Diagnosis and Testing

Refer to Wiring Diagrams Section 417-01, for schematic and connector information.

Special Tool(s)

Terminal Probe Kit

29-011A

Inspection and Checking

  1. Verify the customer concern.
  1. Visually inspect for the following mechanical and electrical causes of the concern.

Visual Inspection

Electrical
  • Fuse(s)
  • Lamp(s)
  • Connector(s)
  • Switches
  • Wiring harness
  1. Resolve any obvious causes or concerns found during the visual inspection before carrying out any further tests.
  1. If the concern is not visually evident, refer to the Symptom Chart.

Symptom Chart

Symptom Chart

Symptom Possible Sources Action
The reversing lamp is inoperative
*
Fuse
*
Circuit(s)
*
Reversing lamp
*
Reversing lamp switch
*
Central junction box (CJB)
*
GO to Pinpoint Test A.
The reversing lamp is permanently on
*
Circuit(s)
*
Reversing lamp switch
*
Audio/navigation control panel
*
GO to Pinpoint Test B.

System Checks

NOTE:
NOTE:Use a digital multimeter for all electrical measurements.

PINPOINT TEST A : THE REVERSING LAMP IS INOPERATIVE

TEST CONDITIONS DETAILS/RESULTS/ACTIONS
A1: CHECK FUSE F13 (CJB)
1
Ignition switch in position 0.
2
Disconnect Fuse F13 (15 A) (CJB).
3
CHECK fuse F13 (15 A) (CJB).

Is the fuse OK.?
Yes
No
RENEW fuse F13 (15 A) and CHECK the operation of the system. If the fuse blows again, LOCATE and RECTIFY the short to ground using the Wiring Diagrams. CHECK the operation of the system.
A2: CHECK THE VOLTAGE AT FUSE F13 (CJB)
1
Connect Fuse F13 (15 A) (CJB).
2
Ignition switch in position II.
3
Measure the voltage between fuse F13 (15 A) (CJB) and ground.

Does the meter display battery voltage?
Yes
No
LOCATE and RECTIFY the break in the voltage supply to fuse F13 (CJB) using the Wiring Diagrams. If necessary RENEW the CJB. CHECK the operation of the system.
A3: CHECK THE VOLTAGE AT THE REVERSING LAMP SWITCH
1
Ignition switch in position 0.
2
Disconnect Reversing lamp switch from connector C213.
3
Ignition switch in position II.

4
Measure the voltage between the reversing lamp switch, connector C213, pin 1, circuit 14-LG28 (VT/WH), wiring harness side and ground.

Does the meter display battery voltage?
Yes
No
LOCATE and RECTIFY the break in circuit 14-LG28 (VT/WH) between fuse F13 (CJB) and the reversing lamp switch using the wiring diagrams. CHECK the operation of the system.
A4: CHECK REVERSING LAMP SWITCH
1
Ignition switch in position 0.

2
Connect a fused jumper wire (15 A) to the reversing lamp switch, connector C213, between pin 1, circuit 14-LG28 (VT/WH) and pin 2, circuit 14S-LG39(A) (VT/OG), wiring harness side.
3
Ignition switch in position II.
4
CHECK the operation of the reversing lamp.

Does the reversing lamp illuminate?
Yes
INSTALL A NEW reversing lamp switch. CHECK the operation of the system.
No
A5: CHECK THE GROUND CONNECTION OF THE REVERSING LAMP FOR OPEN CIRCUIT
1
Ignition switch in position 0.
2
Disconnect Reversing lamp from connector C551a.

3
Measure the resistance between the reversing lamp, connector C551a, circuit 31-LG39 (BK), wiring harness side and ground.

Is less than 2 Ohm measured?
Yes
LOCATE and RECTIFY the break in circuits 14S-LG39(A) (VT/OG) between the reversing lamp switch and the reversing lamp using the Wiring Diagrams. CHECK and RENEW the reversing lamp as required. CHECK the operation of the system.
No
LOCATE and RECTIFY the break in circuit 31-LG39 (BK) between the reversing lamp and soldered connection S162 using the Wiring Diagrams. CHECK and RENEW the reversing lamp as required. CHECK the operation of the system.

PINPOINT TEST B : THE REVERSING LAMP IS PERMANENTLY ON

TEST CONDITIONS DETAILS/RESULTS/ACTIONS
B1: CHECK REVERSING LAMP SWITCH
1
Ignition switch in position 0.
2
Disconnect Reversing lamp switch from connector C213.
3
Ignition switch in position II.
4
CHECK the reversing lamps.

Is the reversing lamp permanently on?
Yes
- LOCATE and REPAIR the short to battery voltage in circuit 14S-LG39 (VT/OG), between the reversing lamp and the reversing lamp switch using the Wiring Diagrams. CHECK the operation of the system.
- Vehicles with audio/navigation system and parking aid GO to B2.
No
CHECK and if necessary RENEW the reversing lamp switch. CHECK the operation of the system.
B2: RULE OUT AUDIO/NAVIGATION CONTROL UNIT AS POSSIBLE CAUSE FOR A SHORT TO BATTERY VOLTAGE
1
Ignition switch in position 0.
2
Disconnect Fuse F2 (10 A) (CJB).
3
Disconnect Fuse F6 (10 A) (CJB).
4
Disconnect Fuse F35 (10 A) (CJB).
5
Ignition switch in position II.
6
CHECK the reversing lamps

Does the reversing lamp illuminate?
Yes
LOCATE and RECTIFY the short to battery voltage in the circuits connected to soldered connections S80 and S237 with the aid of the Wiring Diagrams. CHECK the operation of the system.
No
CHECK and if necessary RENEW the audio/navigation control unit. CHECK the operation of the system.

Headlamp Leveling - Vehicles Built Up To: 02-2005, Convertible > < Reversing Lamps - Vehicles Built From: 02-2005, Convertible