Captiva |
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• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
The ECM tests the Evaporative Emission (EVAP) System for a large leak or restrictions to the purge path in the EVAP system. When the enabling criteria has been met the ECM commands the EVAP vent solenoid valve ON and the EVAP purge solenoid valve ON, allowing vacuum into the EVAP system. The ECM monitors the fuel tank pressure (FTP) sensor voltage to verify that the system is able to reach a predetermined level of vacuum within a set amount of time.
• | DTCsP00C8, P00C9, P0068, P16F3, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0122, P0123, P0125, P0128, P160E, P160D, P0191, P0192, P0193, P0222, P0223, P0443, P0449, P0452, P0453, P0454, P0502, P0503, P0606, P0722, P0723, P1104, P2100, P2101, P2102, P2103, P2135, P2227, P2228, P2229, P2230 are not set. |
• | The engine is running. |
• | The ignition voltage is between 11-32 V. |
• | The barometric pressure (BARO) is more than 70 kPa. |
• | The fuel level is between 10-90 %. |
• | The purge flow is greater than 3 % |
• | The start-up engine coolant temperature (ECT) is less than 35°C (95°F). |
• | The start-up intake air temperature (IAT) is between 4-30°C (39-86°F). |
• | The start-up ECT and IAT are within 8°C (46°F) of each other. |
• | DTC P0455 runs once per cold start within 10 minutes of start-up. |
• | The EVAP system is not able to achieve or maintain a calibrated level of vacuum within a set amount of time |
• | After setting the DTC for the first time, 2 L (0.5 gal) of fuel must be consumed before setting the DTC for the second time. |
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DTC P0455 is a Type B DTC.
DTC P0455 is a Type B DTC.
• | Inspect for a loose, missing, damaged, or incorrect fuel fill cap. |
• | Inspect for a damaged fuel filler neck seal surface. |
• | A blockage or restriction in the EVAP purge solenoid valve, purge pipe, EVAP canister, or vapour pipe, can cause this DTC to set. Check for vacuum at the purge valve while commanded ON with the scan tool, canister side of hose disconnected and engine running. |
• | The EVAP system can be filled with smoke more quickly and completely by opening the system opposite the end where the smoke is injected. For example, when injecting smoke at the service port remove the fuel fill cap, or temporarily leave the vent open, until smoke is observed, then close the system and continue testing. If using a fuel cap adapter at the filler neck, use the J 41413-VLV at the service port to allow the system to fill faster. |
• | To help locate intermittent leaks using the J 41413-200 , move all EVAP components while observing smoke with the GE-41413-SPT . |
• | Individual components can be isolated and tested using adapters in the GE-41413-300 . |
• | A condition may exist where a leak in the EVAP system only exists under a vacuum condition. This type of leak may be detected by using the scan tool Purge/Seal function to create a vacuum in the EVAP system and then observe the FTP parameter for vacuum decay. |
Evaporative Emission Control System Description
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
• | CH 48096 Evaporative Emissions Service Access Port Tool |
• | GE-41413-300A Evaporative Emissions Cap and Plug Kit |
• | J 41413-200 Evaporative Emissions System Tester (EEST) |
• | J 41413-311 Evaporative Emissions Plug |
• | J 41413-SPT High Intensity White Light |
• | J 41413-VLV Evaporative Emissions Service Port Vent Tool |
• | J 41415-30 Fuel Tank Adapter |
• | For equivalent regional tools, refer to Special Tools . |
Note:
• Larger volume fuel tanks and/or those with lower fuel levels may require several minutes for the floating indicator to stabilise. • Refer to the J 41413-200 EEST operation manual for detailed instructions in Evaporative Emission System Diagnosis .
⇒ | If a leak is detected, use the J 41413-200 EEST to apply smoke to the evaporative emission system at the purge tube until the leak is located using the J 41413-SPT White Light . |
⇒ | If the vacuum/pressure gauge shows vacuum, but the fuel tank pressure parameter does not show vacuum, replace the fuel tank pressure sensor. |
⇒ | If neither the fuel tank pressure parameter nor the vacuum/pressure gauge shows vacuum, repair the restriction in the purge path. |
⇒ | If the values are not similar, or the voltage did not reach 3.2 V, replace the B150 fuel tank pressure sensor. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Fuel Tank Pressure Sensor Replacement : LE5 |
• | Control Module References for engine control module (ECM) replacement, setup, and programming |
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