Operation CHARM: Car repair manuals for everyone.

Output Diagnostic Test Mode (DTM) (Scan Tool Function 03)




NOTES:
- Output Diagnostic Test Mode may only be carried out on a stationary vehicle with the engine off.
- Trace any faults identified by the Output Diagnostic Test Mode, replace the instrument cluster if necessary.


The function "Output Diagnostic Test Mode" cycles all the control elements in the instrument cluster sequentially, if they are installed and coded.

- Concurrent testing of the display ranges of all the analog indicators (coolant temperature guage, tachometer, speedometer and fuel guage).
- Activation of the mini-check indicator lights.
- Activation of the seat belt warning lamp.
- Activation of the chime.
- Segment check of the multi-function display and/or the LCD odometer.
- Activation of the instrument cluster lights and dimmer.
- Coolant excess temperature test


NOTES:
- The instrument cluster lighting test can only be carried out with the lights on.
- The coolant excess temperature test activates the A/C compressor safety shut-off.


Initiating Output Diagnostic Test Mode


NOTE:
The units displayed are country specific.


Indicated on display


Rapid data transfer HELP
Select function XX



- Press buttons -0- and -3- to select "Output Diagnostic Test Mode" function 03.

Indicated on display


Rapid data transfer Q
03 - Output Diagnostic Test Mode



- Press -Q- button to confirm Input.
This will start the Output Diagnostic Test Mode for the analog instruments (displays).

Indicated on display


Output Diagnostic Test Mode ->
Analog Indicators



After pressing the -Q- button, the following tests are run:
- Coolant temperature guage needle moves over complete range
- Tachometer needle moves over complete range
- Speedometer needle moves over complete range
- Fuel guage needle moves over complete range

The following preset values are displayed at the end of the test:
Coolant temperature display: 90 °C (194 °F)
Tachometer: 3000 RPM
Speedometer: 100 km/h (62 mph)
Fuel level: 1/2


NOTE: If the ignition is switched on or off with any guage needle in motion, its movement will be interrupted.


- Press -> button.

Indicated on display


Output Diagnostic Test Mode ->
Instrument Cluster Warning Lights Test



Activation of mini-check indicator lights
- Press -> button.

Indicated on display


Output Diagnostic Test Mode ->
Seat Belt Warning Light-K19



Activation of seat belt warning light.


NOTE: Depending on the model/equipment, the seat belt warning light will be activated via the control module coding. This means that the warning light will be inactive if this test is skipped.


- Press -> button.

Indicated on display


Output Diagnostic Test Mode ->
Chime



The chime is activated and sounds continuously.
- Press -> button.

Indicated on display


Output Diagnostic Test Mode ->
Segment test



NOTES:
- All indicators on the multi-function display and/or the LCD odometer are cycled.
- All segments on the multi-function monitor light up and one bar remains dark.


- Press -> button.

Indicated on display


Output Diagnostic Test Mode ->
Switch and instrument lighting



The instrument cluster dimming is tested.
- Press -> button.

Indicated on display


Output Diagnostic Test Mode ->
ECT Overheat Test



The A/C compressor safety cut-out will be activated within approx. 5 seconds.
- Press -> button.

Indicated on display


Output Diagnostic Test Mode ->
END



- Press -> button to end Output Diagnostic Test Mode.
This returns the scan tool to the "Select function XX" prompt.

Indicated on display


Rapid data transfer HELP
Select function XX