EHC Service Information
Diagnosis / Coding
The EHC control module is connected to the diagnostic link. The EHC control module activates the fault display in the instrument cluster to alert the operator of the off-line sta- tus of the system. The EHC control module stores up to three electrical/electronic faults.
Diagnosis/troubleshooting of EHC is carried out using the fault symptom troubleshoot- ing program of the MoDiC or DIS. The EHC system has an extensive diagnosis program.
Replacement control modules are shipped in the factory mode. The control modules
must be ZCS encoded using the DIS or MoDiC to activate the operating parameters.