Inspection and verification
1. Check the validity of the customer's complaint.
2. Perform a visual inspection for obvious signs of mechanical or electrical damage.
Visual inspection table
|
Mechanical factors |
Electrical factors |
|
– Engine/engine compartment or underbody components – Level of working fluids – Installation of accessories |
– Fuse(s) – Loose or corroded connector(s) – Instrument panel(s) – Oil pressure and oil temperature display - Wiring harness - Electrical circuit - Lamps |
3. If an obvious cause for the fault noted or described is found, correct it (if possible) before proceeding with further actions.
4. If the cause is not visually obvious, check the malfunction symptom and refer to the Malfunction Symptom Table.
Table of signs of malfunction
|
State |
Possible Causes |
Action |
|
•The instrument panel lighting does not work |
* Fuse box. •Headlight switch. •Electric circuit. |
• Proceed to PINPOINT TEST A. |
|
•The instrument panel backlight does not work |
•Electric circuit. •Instrument panel. |
• Proceed to PINPOINT TEST B. |
|
•The climate control panel backlight does not work |
•Electric circuit. • Climate control panel illumination lamp. |
• Proceed to PINPOINT TEST C. |
|
•The audio system backlight does not work |
•Electric circuit. •Audio system control unit. |
• Proceed to PINPOINT TEST D. |
|
•The gear shift lever light does not work. |
•Electric circuit. •Gear shift lever illumination lamp socket. |
• Proceed to PINPOINT TEST E. |
|
•The cigarette lighter backlight does not work. |
•Electric circuit. •Cigarette lighter socket. |
• Proceed to PINPOINT TEST F. |
|
•door lock/unlock switch light does not work |
•Electric circuit. •Door lock/unlock switch |
• Proceed to PINPOINT TEST G. |
|
•The traction control switch light does not work. |
•Electric circuit. •Traction control system switch. |
• Proceed to PINPOINT TEST H. |
|
•The hazard warning light switch illumination does not work. |
•Electric circuit. •Hazard warning light switch. |
• Proceed to PINPOINT TEST I. |
|
•The front seat heating switch illumination does not work. |
•Front seat heating switch. |
• Proceed to PINPOINT TEST J |
|
•The brightness of the instrument panel lighting is not adjustable |
• Instrument lighting dimmer. |
•INSTALL a new headlight/dimmer switch assembly. |
(The original source of this article can be found at www.fordbook.ru)