Infrared Remote Central Locking System (RCL)
Preliminary Work:
- Perform Function Test.
Preparation for Test (DTC readout):
1. Fuses OK.
2. Battery voltage > 11 V.
3. voltage supply to control modules and CAN data lines ok,
4. Connect Hand-Held Tester (HHT).
NOTE:
- The diagnostic trouble codes (DTC's) can only be read out and erased using the Hand-Held Tester (HHT).
- Entry into DTC memory of CL with DAS 3 is via HHT display as follows: Function-Closing systems-Central locking or DAS-DTC memory.
While performing the DTC readout it is possible that DTCs may appear that am not relevant to the system being checked, meaning that all stored DTCs in that. particular control module am being displayed.
Note regarding Diagnostic Trouble Codes (DTC's):
Current diagnostic trouble codes are highlighted in black on the display.
Additional detailed fault information based on fault type is displayed with nearly all diagnostic codes (DTC's) such as:
> Ohm resistance too great
> Ohm resistance too low
[]+ short circuit to positive (POS)
[]- short circuit to ground (GND)
-//- open circuit
Abbreviations:
DBE Roof control panel control module (N70)
EZS Electronic ignition switch (N73)
SAM Signal pick-up and activation module (N10/1)
TSG1 Door control module 1 (N69/2)
TSG2 Door control module 2 (N69/1)
The above noted abbreviations are in the second column of the DTC memory table in bold type to advise of hints (regarding in which of the control modules the actual values or activations are stored).
Special Tools:
