MODEL IDENTIFICATION
| Series | Engine |
|---|---|
| Bronco | 5.0L & 5.8L |
MODEL IDENTIFICATION
Perform all steps in BASIC TESTING article in this section. If no fault is found while performing the BASIC TESTING procedures, proceed with self-diagnostics. If no service code or only pass codes are found during self-diagnostics, proceed to TESTS W/O CODES article in this section for diagnosis by symptoms.
Description
Following procedures are functional tests of EEC-IV system. (Схема №3) These 5 basic test steps must be carefully followed in sequence to avoid misdiagnosis or replacement of non-faulty components.
- Visual Check & Equipment Hookup
- KOEO (Key On Engine Off) SELF-TEST
- Computed Timing Check
- KOER (Key On Engine Running) SELF-TEST
- Continuous Monitor Mode (Wiggle Test)
Hardware Limited Operational Strategy (HLOS)
If a number of system or sensor failures are present and PCM is not receiving enough information to operate, PCM will switch to HLOS mode. PCM will output fixed values to allow operation of vehicle. Driveability performance will be reduced.