Re-Testing Parts Of Trip Cycle Using VOLVO System Tester (VST)

NOTE: The following information is from Volvo technical service bulletin No. 0059, Section 2, Group 23, dated July, 2002.

NOTE: Engine must have been left running. If engine has been shut off before completion of TRIP cycle, entire cycle must be repeated. Engine idle and drive times may be slightly longer than given time, but must be NO LESS than set amount.

Using VST, access DIAGNOSTIC CHECK menu and press Enter at TRIP/READINESS window. This will display a list of all EFI codes. Note each code that is displayed as NOT TESTED. Proceed as follows.
- EFI-233, Adaptive Idle Air Trim. Idle engine for 60 seconds. Rev engine above 1500 RPM for a few seconds and let idle for another 60 seconds. Repeat until status changes to TESTED. If no other systems display NOT TESTED, TRIP cycle is complete.
- EFI-425/436, Rear Oxygen Sensor. Test drive vehicle and reach at least 45 mph. Drive for 5 minutes with engine speed of 1800-2200 RPM. Repeat until status changes to TESTED. If no other systems display NOT TESTED, TRIP cycle is complete.
- EFI-435, Front Heated Oxygen Sensor. Drive vehicle with engine speed of 2200-2800 RPM and load of 1.1-1.8 ms (LOAD-TL). Drive for 2 minutes at engine speed of 1800-2200 RPM. Test drive vehicle and accelerate quickly to engine speed of 3000-3500 RPM. Maintain engine speed for 30 seconds. Reduce engine speed to 1800-2200 RPM and maintain engine speed for 2 minutes. Test drive vehicle and accelerate quickly to engine speed of 3000-3500 RPM and maintain engine speed for 30 seconds. Reduce engine speed to 2300-2500 RPM and maintain engine speed for 2 minutes. Repeat process until status changes to TESTED. If no other systems display NOT TESTED, TRIP cycle is complete.
- EFI-611/612, Fuel Tank System. Run quick test using VST. Select ACTIVATION menu. Select ACTIVATE DIAG. Select LEAKAGE DIAGNOSIS. Status will change to TESTED if system is functioning properly. If no other systems display NOT TESTED, TRIP cycle is complete.
- EFI-442/445-448, PAIR System. Go to step Run quick test using VST. Select ACTIVATION menu. Select ACTIVATE DIAG. Select SASDIAGNOSIS. Status will change to TESTED if system is functioning properly. If no other systems display NOT TESTED, TRIP cycle is complete.
Go to next step when all diagnostics are complete using VST.
TRIP cycle is complete when all systems are checked. Some readiness codes may display as INCOMPLETE. This will not affect function of OBD-II system. This can be disregarded.