DTCM - Diagnostic Trouble Code Memory
Preliminary Work: Function test. FT - Function Test
Preparation for Test:
1. Connect Hand-Held Tester (HHT) to 38-pole data link connector (X11/4) according to connection diagram.
2. Review connecting of test equipment. Connection and Use of Test Equipment - Section 0
3. Voltage supply to all control modules and CAN bus OK.
4. All fuses are OK.
5. Ignition: ON
6. All CAN data line connections must be connected.
The diagnostic trouble codes (DTC's) can only be read out and erased using the Hand-Held Tester (HHT).
DTCs for the system being checked may be located in other control modules, therefore it is important to check the DTC memory on all control modules that are relevant to the system being checked.
While performing the DTC readout, it is possible that DTCs may appear that are not relevant to the system being checked, meaning that all stored DICs in that particular control module are being displayed.
Non-relevant DTCs are described in each system as necessary.
Abbreviations:
TSG 1 Front driver-side door control module (N69/1)
TSG 2 Front passenger-side door control module (N69/2)
UBF Lower control field control module (N72)
ESV-L Left seat adjustment
ESV-R Right seat adjustment
The noted abbreviations (TSG 1, TSG 2, ESV-L, ESV-R) are located in the header above each of the following DTC memory charts and advise of which control module the DTC is stored in.
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:
Additional Fault Information:
With some DTCs additional information such as fault frequency can be readout.
Fault Frequency
Faults are noted by frequency of occurrence, i.e.: 4 periodic faults, 4 occurances.
Special Tools:
Trouble Code Charts
