Monitors, Trips, Drive Cycles and Readiness Codes

Diagnostic Drive Cycles
Following the setting of a DTC, the appropriate repairs must be carried out, and the normal operation of the system checked. This will be done by performing a series of drive cycles which will enable the vehicle to operate the evaporative emissions system as a function check. The following drive cycles cover the use of the Jaguar approved diagnostic system, a scan tool, and a test with no additional equipment, where possible.

Flow check monitor drive cycle conditions (non-Federal)

NOTE: These conditions must be satisfied before the test is commenced.

This drive cycle should be performed following rectification work on the system.
- Make sure the fuel tank is between one third and three quarters full. (Adding fuel will increase vapor generation; the diagnostic will not run if the vapor concentration is too great).
- Make sure the ambient air temperature is above -5 °C (23 °F).

Flow check monitor drive cycle (non-Federal)
- Drive the vehicle for a minimum of 15 minutes, avoiding severe or excessive fuel movement.
- Avoiding excessive fuel movement, gently bring the vehicle to rest (coast to a stop).
- Allow the vehicle to idle for two minutes.

Full Evaporative system monitor drive cycle conditions

NOTE: These conditions must be satisfied before the test is commenced.

- Make sure the fuel filler cap is correctly fitted.
- Clear the DTCs. (Perform a code clear, even if no codes are present. This will reset TIDs).
- Make sure the fuel tank is between one third and three quarters full (adding fuel will increase vapor generation; the diagnostic will not run if the vapor concentration is too great).
- Drive the vehicle for a minimum of two minutes, and until fully warm (temperature gauge just below mid-point).
- Make sure that the purge valve is operating, either by touch, sound, or using datalogger (purge vapor management valve-duty cycle).

Full Evaporative system monitor drive cycle
- Drive the vehicle to a suitable road where the test can be carried out, switch off the ignition.
- Leave the ignition switched off for 30 seconds.
- Restart the engine, accelerate briskly to 80 kilometers per hour (50 miles per hour), making sure that the engine speed reaches at least 3500 rpm for a minimum of five seconds.

40 thou test, using the Jaguar approved diagnostic system
- Avoiding high engine loads, drive the vehicle steadily between 64 and 97 kilometers per hour (40 and 60 miles per hour). Using the Jaguar approved diagnostic system, monitor the evaporative valve duty cycle (purge vapor management valve-duty cycle), CCV status (canister close valve-vapor recovery system), and the FTPS (fuel tank pressure-vapor recovery system). The Jaguar approved diagnostic system will give an indication when the test is active. Dependant on the level of vapor concentration, it may take up to 30 minutes for the test to initialize. (Vapor concentration cannot be measured using the Jaguar approved diagnostic equipment). When the test has initialized (CCV closed), it will take up to 90 seconds to complete. Avoid excessive fuel movement while the test is active.

20 thou test, using the Jaguar approved diagnostic system
- Continue driving the vehicle steadily between 64 and 97 kilometers per hour (40 and 60 miles per hour) avoiding high engine loads for a further 10 minutes.
- Avoiding excessive fuel movement, gently bring the vehicle to rest (coast to a stop).
- Allow the vehicle to idle for 2 minutes.
- Use the Jaguar approved diagnostic system to monitor the evaporative valve duty cycle (purge vapor management valve-duty cycle), CCV status (canister close valve-vapor recovery system), and the FTPS (fuel tank pressure-vapor recovery system). The Jaguar approved diagnostic system will give an indication when the test is active. When the test has initialized (CCV closed), it will take up to 90 seconds to complete.

If the 20 thou test has not run, it is likely that the vapor concentration in the purge system is too great. In this case, carry out the following:
- Drive the vehicle steadily for a further 30 minutes, avoiding excessive fuel movement.
- Avoiding excessive fuel movement, gently bring the vehicle to rest (coast to a stop).
- Allow the vehicle to idle for 2 minutes.
- Use the Jaguar approved diagnostic system to monitor the evaporative valve duty cycle (purge vapor management valve-duty cycle), CCV status (canister close valve-vapor recovery system), and the FTPS (fuel tank pressure-vapor recovery system). The Jaguar approved diagnostic system will give an indication when the test is active. When the test has initialized (CCV closed), it will take up to 90 seconds to complete.

If the 20 thou test fails to run a second time, repeat the entire test.
- Check for DTCs. Rectify as indicated.

40 thou test, using scan tool
- Avoiding high engine loads, drive the vehicle steadily between 64 and 97 kilometers per hour (40 and 60 miles per hour).
- When the test has initialized, using the scan tool, monitor the evaporative valve duty cycle, CCV status, and the FTPS (the scan tool should give an indication when the test is active).
- When the test has initialized (CCV closed), it will take up to 90 seconds to complete.
- To make sure that the test has completed, TID 08 in mode 6 must be checked (if the test has not completed, this TID will display 0. Any other value indicates test completion).
- If the test did not complete, repeat the test.

20 thou test, using scan tool
- Continue driving the vehicle steadily between 64 and 97 kilometers per hour (40 and 60 miles per hour) avoiding high engine loads for a further 10 minutes.
- Avoiding excessive fuel movement, gently bring the vehicle to rest (coast to a stop).
- Allow the vehicle to idle for 2 minutes.
- When the test has initialized, using the scan tool, monitor the evaporative valve duty cycle, CCV status, and the
- When the test has initialized (CCV closed), it will take up to 90 seconds to complete.
- To make sure that the test has completed, TID 06 in mode 6 must be checked (if the test has not completed, this
- If the test did not complete, repeat the test.
- If the 20 thou test has not run, it is likely that the vapor concentration in the purge system is too great. In this case, FTPS (the scan tool should give an indication when the test is active). TID will display 0. Any other value indicates test completion). drive the vehicle steadily for a further 30 minutes, avoiding excessive fuel movement, then repeat the test.
- Check for DTCs. Rectify as indicated.

40 thou and 20 thou tests using no additional equipment
The test procedure and conditions are as for the Jaguar approved diagnostic system or scan tool, but no confirmation of the test having run is possible without the use of one of these instruments. The DTC will be set if the fault still exists, but the possibility exists that the conditions for the test to run may not have been met, in which case, the DTC may not be set until the owner reproduces the conditions in which the fault originally occurred.

Drive cycle for 'green' ECM
- To enable the ECM to re-learn fuelling adaptations.

NOTE: This procedure should be performed whenever the vehicle battery has been disconnected.

Due to component tolerance and wear during the normal running of a vehicle, fuelling and air requirements for an engine will vary over time. The ECM has the ability to adjust for this variation by ' learning' the level of compensation that is required (these compensation values are referred to as adaptations).

If the vehicle battery is disconnected, all adaptations held within the ECM will be lost (i.e., set to zero). The ECM is then referred to as ' green'. To enable the vehicle to function correctly, the ECM must ' relearn' these adaptations.

There are five areas or sites that need to be relearnt:
- To enable the ECM to re-learn fuelling adaptations.
- Allow the vehicle to idle until fully warm (temperature gauge just below mid-point).
- Allow to idle for a further three minutes, minimum.
- Drive the vehicle with the air conditioning OFF on a level road using a constant throttle, or speed control if fitted, for at least one minute in the following gears, at the stated engine speeds for each of the sites below.

'Green' ECM drive cycle chart. Site 1

NOTE: The vehicle speed is for guidance only. DO NOT use the vehicle speed as the target to set adaptions.

Monitor condition Parameters
GEAR P
ENGINE SPEED Idle
VEHICLE SPEED (GUIDE ONLY) 0 mph

'Green' ECM drive cycle chart. Site 2

NOTE: The vehicle speed is for guidance only. DO NOT use the vehicle speed as the target to set adaptions.

Monitor condition Parameters
GEAR 2
ENGINE SPEED 1595 rpm
VEHICLE SPEED (GUIDE ONLY) 15.4 kph (9.56 mph)

Monitor condition Parameters
GEAR 2
ENGINE SPEED 1295 rpm
VEHICLE SPEED (GUIDE ONLY) 11.0 kph (6.8 mph)

Monitor condition Parameters
GEAR 2
ENGINE SPEED 1158 rpm
VEHICLE SPEED (GUIDE ONLY) 14.4 kph (8.7 mph)

Monitor condition Parameters
GEAR 2
ENGINE SPEED 984 rpm
VEHICLE SPEED (GUIDE ONLY) 6.4 kph (4.0 mph)

'Green' ECM drive cycle chart. Site 3

NOTE: The vehicle speed is for guidance only. DO NOT use the vehicle speed as the target to set adaptions.

Monitor condition Parameters
GEAR 2
ENGINE SPEED 2385 rpm
VEHICLE SPEED (GUIDE ONLY) 37.5 kph (23.3 mph)

Monitor condition Parameters
GEAR 2
ENGINE SPEED 1877 rpm
VEHICLE SPEED (GUIDE ONLY) 30.4 kph (18.9 mph)

Monitor condition Parameters
GEAR 2
ENGINE SPEED 1831 rpm
VEHICLE SPEED (GUIDE ONLY) 32.0 kph (19.9 mph)

Monitor condition Parameters
GEAR 2
ENGINE SPEED 1481 rpm
VEHICLE SPEED (GUIDE ONLY) 22.4 kph (14.0 mph)

'Green' ECM drive cycle chart. Site 4

NOTE: The vehicle speed is for guidance only. DO NOT use the vehicle speed as the target to set adaptions.

Monitor condition Parameters
GEAR 3
ENGINE SPEED 2635 rpm
VEHICLE SPEED (GUIDE ONLY) 66.5 kph (41.3 mph)

Monitor condition Parameters
GEAR 3
ENGINE SPEED 1937 rpm
VEHICLE SPEED (GUIDE ONLY) 44.8 kph (27.8 mph)

Monitor condition Parameters
GEAR 3
ENGINE SPEED 2152 rpm
VEHICLE SPEED (GUIDE ONLY) 57.6 kph (35.8 mph)

Monitor condition Parameters
GEAR 3
ENGINE SPEED 2250 rpm
VEHICLE SPEED (GUIDE ONLY) 64.0 kph (39.8 mph)

'Green' ECM drive cycle chart. Site 5

NOTE: The vehicle speed is for guidance only. DO NOT use the vehicle speed as the target to set adaptions.

Monitor condition Parameters
GEAR 3
ENGINE SPEED 3500 rpm
VEHICLE SPEED (GUIDE ONLY) 89.0 kph (55.3 mph)

Monitor condition Parameters
GEAR 3
ENGINE SPEED 3287 rpm
VEHICLE SPEED (GUIDE ONLY) 80.0 kph (50.0 mph)

Monitor condition Parameters
GEAR 3
ENGINE SPEED 2891 rpm
VEHICLE SPEED (GUIDE ONLY) 80.0 kph (50.0 mph)

Monitor condition Parameters
GEAR 3
ENGINE SPEED 2592 rpm
VEHICLE SPEED (GUIDE ONLY) 80.0 kph (50.0 mph)

Bring the vehicle to rest, allow to idle for one minute.

WARNING: The following tests may involve parts which are hot.

If sufficient adaptations have occurred, the canister purge valve should now be operating. This can be verified manually by either touching or listening to the valve. By touching the canister purge valve, it should be possible to feel the valve switching. Listening to the canister purge valve is best done using a workshop stethoscope, through which it should be possible to hear the valve operating.