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Home >> Volvo >> 1994 >> 850 L5-2.3L Turbo VIN 57 B5234FT >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Output Device Test - Diagnostic Test Mode 3
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Output Device Test - Diagnostic Test Mode 3

Test Mode 3:





ACTIVATION
CONTROL FUNCTION 3 is activated by three brief operations of test button A with ignition "ON."

OPERATED COMPONENTS
The ECU activates the following components (in order):
- EGR valve
- Turbo Control valve
- EVAP valve
- Radiator fan at half speed (3 seconds).
- Radiator fan at full speed (3 seconds).
- Injectors (at 13 Hz).
- Idle valve (at 1 Hz).
- A/C relay and compressor clutch (at 1 Hz).
- Engine speed (1250-1500 RPM on tachometer)

The procedure will repeat twice to confirm component operation.
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