DESCRIPTION
Following procedures are functional tests of EEC-IV system. (Схема №3) These 5 basic test steps must be carefully followed in sequence, otherwise misdiagnosis or replacement of non-faulty components may result
- Visual Check & Vehicle Preparation.
- Equipment Hookup.
- KOEO (Key On Engine Off) SELF-TEST.
- Computed Timing Check.
- KOER (Key On Engine Running) SELF-TEST.
Hardware Limited Operational Strategy (HLOS)
If a number of system or sensor failures are present and ECA is not receiving enough information to operate, ECA will switch to HLOS mode. ECA will output fixed values to allow operation of vehicle. Driveability concerns will be present. ECA will not output service codes in this mode.
See also:
• FUEL PRESSURE SPECIFICATIONS