With Hand-Held Tester (HHT)

Reading Diagnostic Trouble Code (DTC) Memory
1. Connect HHT with test cable to data link connector. Reading Diagnostic Trouble Codes
2. Ignition: ON
3. As per display in HHT:
a) read out/erase DTC memory
b) read out actual values
c) perform activations
d) program control modules
4. Disconnect HHT

NOTE: Observe system specific notes. System Specific Notes
Erase all stored faults which come about when tests or simulations are performed, upon completion of the repairs.


Prerequisites for readout of DTC memory

WARNING: Risk of severe injury when touching ignition parts which produce high voltages Do not touch ignition components. Persons with heart pacemakers are not to perform repairs on this type of ignition system.

NOTE: Readout via the impulse counter scan tool is NOT possible.

NOTE: Symbol for emission related malfunctions which lead to the activation of the CHECK ENGINE MIL when a certain test cycle was performed and a fault was recognized in the prior trip cycle. The CHECK ENGINE MIL will illuminate immediately if a "TWC damaging" missfire is found.


Preparation for Test:
1. Connect HHT with test cable to data link connector (X11/4), readout DTC fault codes
2. Review Section: 22.
3. Review Sections: 21, 23, 24, 31, 33.
4. Perform Test and adjustment of engine, if necessary.
5. Ignition: ON