Test Driving
Test driving
Fault-tracing information
Hint: The cruise control on-board diagnostic (OBD) system differs from most other systems' diagnostic functions in that diagnostic trouble codes (DTCs) and disengagement causes are only stored in the control module until the engine is turned off. So it is important not to switch off the ignition after a test drive until any diagnostic trouble codes (DTCs) and disengagement causes stored have been read off.
- When "Confirming component activation", "Diagnostic test mode (DTM) 2" and "Checking vacuum system" have been carried out the car must be test driven before one can "Read and erase diagnostic trouble codes (DTCs)" and "Read input and output signals", "Diagnostic test mode (DTM) 5".
- Test drive the car to see if diagnostic trouble codes (DTCs) and/or disengagement causes have been stored.
Continue - Test driving
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Test driving
Test driving
Fault-tracing information
Note! Diagnostic trouble code (DTC) 1-2-2 will always be stored if the engine is turned off after a test drive. The test drive must then be carried out again. If cruise control disengages at speeds above 35 km/h, without the ON/OFF switch, brake or clutch pedal being activated, or gear selector being moved from D to N, discontinue test driving. Fault-trace according to "Reading input and output signals" (diagnostic test mode (DTM) 5).
- Ignition off.
- Disconnect Volvo Scan Tool (ST) from data link connector (DLC).
Continue -
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Checking cruise control components/disengagement causes
Note! Drive the car at a speed greater than 35 km/h (for at least 15 seconds) and check that the following components and disengagement causes are operating. Note any deviations.
- Check that speedometer is operating correctly.
- Switch cruise control switch to ON. Activate cruise control by pressing the SET+ button. The cruise control should maintain the set speed.
- Keep the SET+ button pressed. The car speed should increase.
- Switch the cruise control switch OFF. Cruise control should disengage.
- Switch the switch to RESUME. The cruise control should return to the previously set speed.
- Press the SET- button so that the car speed is below 35 km/h. Cruise control should disengage.
- Activate cruise control. Lightly depress brake pedal. Cruise control should disengage.
- Activate cruise control. Lightly depress clutch pedal (manual transmission). Cruise control should disengage.
- Activate cruise control. Move gear selector from D to N (automatic transmission). Cruise control should disengage.
Location of Components, Cruise Control (Passenger Compartment - Cruise Control, Switch):
Is cruise control working?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFIED - DONE
VERIFICATION FAILED - FAULT-TRACING FAILED
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