Suzuki Grand Vitara SQ416/SQ420/420WD

since 1998 release

Repair and operation of the car

Suzuki Grand Vitara
+ General information
+ Maintenance and lubricant
+ Heater, ventilation and conditioner
+ Steering
+ Suspension bracket
+ Wheels and tires
+ Forward driving shaft / bearing of a shaft. Oil epiploon
+ Driveshafts
+ Brake system
+ Engines
+ Fuel system
+ System of ignition
+ System of start
+ System of release
+ Transmissions
+ Coupling
+ Transfer
+ Forward and back differentials
+ Windows, mirrors, locks and security measures. Immobilizer
- Electric equipment
   - Body electric equipment
      - Main description of the control unit of body electronics
         Arrangement of knots
         Scheme of an electrical wiring
         Self-diagnostics function
         Table of entrance/output signals of the control unit of body electronics
         Precautionary measures when diagnosing malfunctions
         Check of a control system of body electronics
      + Codes of diagnostics of malfunctions
      + General description
   + System of lighting
   + System of electric equipment
   + Tools/information for drivers

Self-diagnostics function

The control unit of body electronics constantly diagnoses a condition of knots and electric chains of system (in independence of whether there are signs of malfunction or not) and shows results (the warning of existence of malfunction and KDN) on the Hours/speed. display, as shown below.

In case of detection by system of malfunction, the Hours/speed. (1) display will begin to blink and the zone in which malfunction was found will be brought in memory of the control unit of body electronics.

When grounding the diagnostic plug (3) of the control unit of body electronics, the zone of malfunction will be displayed on the Hours/speed. (1) display in the form of the KDN code and the period of updating of a code will make 3 seconds (the table of correspondences is shown below).

1 — the display "Hours/speed."
2 — a repair wire
3 — the diagnostic plug
4 — "mass" of the case
5 — an air inlet fragment

Condition of system		Display Hours/speed
Condition of system		The plug of the diagnostic switchboard is not grounded	The plug of the diagnostic switchboard is grounded
Now in good repair	Before malfunctions it is not revealed	It is included	KDN 12
Now in good repair	Earlier malfunctions were found	It is included	History KDN
Now in failure condition	Before malfunctions it is not revealed	Blinks	Current KDN
Now in failure condition	Earlier malfunctions were found	Blinks	Current KDN and history KDN