Testers
Note
For device connection and diagnosis procedures, refer to the user
’
s manual supplied with the tester
DDS diagnosis instrument
In short, the "DDS" has the following functions:
- Error reading (failures) for ignition-injection system errors stored in engine control unit memory and error deletion.
- Parameter reading, such as engine rpm, coolant and air temperature, atmospheric pressure, throttle opening value,
battery voltage, injection times, ignition advance values and so on.
-
Active diagnosis. Enabling of ignition-injection system transducers to check for proper operation and correct control
signal (fuel pump, ignition coils, rev counter, injectors and so on). This function also allows entering the safety code
for bypassing the immobilizer system.
- Road test. This function allows you to store engine parameters within a preset rpm range. At the end of their
acquisition, these parameters are then analyzed and displayed.
- If connected to special feelers, the DDS can read voltage, current and temperature values as well as timing belt
tension values and pressure values into oil and fuel circuits.
Checking and adjusting timing belt tension
Note
A table at the end of this section explains the icons used in this procedure.
Note
Both timing belts can be checked and adjusted using the DDS leaving the engine onto the frame. For this purpose,
connect an optical reader to the DDS. The green led onto the reader shows correct positioning before the timing belt.
The reader also features an infra-red emitter (A) and a receiver (B) to detect timing belt vibrations whilst being duly
flicked with a finger.
Operations
Reference See Section
Remove side covers
N 4.2,
Remove the spark plugs.
Rotate the crankshaft until bringing the piston of the horizontal cylinder at TDC during the combustion stroke.
This is indicated by the mark (C) on the timing layshaft belt roller (28) aligning with the mark (D) on the clutch cover
(20).
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