Diagnostic Trouble Code (DTC) Memory (ESA) - Section 12
CAUTION: Injury hazard from pinching and crushing, in extreme cases extremities can even be severed when caught in the mechanism.
Do not allow any body parts to be in the general area of the moving components.
Preparation for Test:
1. Review sections 12, 20, 21, 31
2. Check fuses, ok,
3. Ignition ON.
4. Connect the Hand-Held Tester (HHT) to X11/4, according to diagram. Connecting Tester Or Scanner, Reading and Erasing DTC Memory
5. Voltage supply for the control module and CAN wiring ok, refer to Information Bus, System Diagnosis.
6. All CAN wiring must be contacted.
NOTE: The diagnostic trouble codes (DTC's) can only be read out and erased via the Hand-Held-Tester.
The DTC's from one system can be stored in other control modules, therefore the DTC memory from other control modules that are relevant to the system being checked should also be readout.
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 DTCs in that particular control module are being displayed.
DTC's which are not relevant to the system being checked may also be stored in the respective system's DTC memory.
Note regarding DTC's
Current DTC's are highlighted in black on the display. Additional detailed fault information based on fault type is displayed with nearly all DTC's such as:
> ohm resistance too great
< ohm resistance too low
[]+ short circuit to positive (POS)
[]- short circuit to ground (GND)
-//- open circuit
A single DTC may also have additional information such as a readout of repeated faults.
Repeated faults
Counting of a faults (e.g.):
4 = intermittant fault (fault occurred 4 times).
Special Tools:
Test equipment
Description Brand, model, etc.
Digital multimeter Fluke models 23, 77 III, 83, 85, 87
Diagnostic Trouble Codes (DTC's)
