Driveability - Gas - Non-Dtc Based Diagnostics: Other Jeep Compass I рестайлинг 2

CHECKING THE ENGINE MECHANICAL SYSTEM

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

CHECKING THE EVAPORATIVE SYSTEM FOR LEAKS

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 14

Scheme 15

Scheme 16

1. EVAPORATIVE SYSTEM INSPECTION Turn the ignition off. Raise the vehicle as necessary in accordance with the Service Information. Visually and physically inspect the entire Evaporative Emission System for any of the following conditions: Holes or cracks Loose seal points Evidence of damaged components Incorrect routing of hoses or tubes Loose or missing fuel filler cap Improper installation of the fuel filler cap Damaged locking tabs on cap and/or fill tube Damaged seal points on cap and/or fill tube Fuel cap gasket seal missing or damaged Were any problems found? Yes Repair as necessary. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) . No Go To 2
2. VERIFY EVAPORATIVE EMISSION LEAK WARNING: Keep lit cigarettes, sparks, flames, and other ignition sources away from the test area to prevent the ignition of explosive gases. Keep the test area well ventilated. Failure to do so may result in possible serious or fatal injury. Turn the ignition off. To continue testing, you will need Evaporative Emission Leak Detector (EELD) (special tool #8404C, Kit, EELD And Accessory). NOTE: The fuel tank should have between 20% and 80% of fuel tank capacity to properly test the Evap system. Connect the red power lead of EELD to the battery positive terminal and the black ground lead to battery negative terminal. Block the vent hose of the Evap Canister. Connect shop air to the EELD. Set the smoke/air control switch to AIR. Insert the tester's AIR supply tip (clear hose) into the 0.040 orifice on the tester's control panel. Press the remote smoke/air start button. Position the red flag on the air flow meter so it is aligned with the indicator ball. When the calibration is complete, release the remote button. The EELD flow meter is now calibrated in liters per minute. Install the service port adapter (special tool #8404-14, Adapter, Evaporative Service Port) on the vehicle's service port (if equipped) or install the (special tool #8404-ADP, Smoke Machine Adapters) into the filter line. Connect the AIR supply hose from the EELD to the service port (if equipped) or to the (special tool #8404-ADP, Smoke Machine Adapters) adapter. Press the remote button to activate AIR flow. NOTE: Larger volume fuel tanks, lower fuel levels, or vehicles equipped with a Flow Management Valve may indicate high flow and will require four to five minutes to fill. Compare the flow meter indicator ball reading to the red flag. ABOVE the red flag indicates a leak present. BELOW the red flag indicates a sealed system. Is the indicator ball above the red flag? Yes Go To 3 No Refer to the Freeze Frame data, if applicable. If the Freeze Frame data indicates that the vehicle was in motion when the DTC was set, verify that all hoses are connected properly. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) .
3. EVAPORATIVE EMISSION LEAK DETECTION NOTE: A thorough inspection of the Evap system hoses, tubes, and connections may save time in diagnosis. Look for physical damage or signs of wetness at connections. The strong smell of fuel vapors may aid diagnosis also. To continue testing, you will need Evaporative Emissions Leak Detector (EELD) (special tool #8404C, Kit, EELD And Accessory). Remove the AIR supply hose from the service port (if equipped) or from the adapter (special tool #8404-ADP, Smoke Machine Adapters). Connect the SMOKE supply tip (black hose) to the service port (if equipped) or to the adapter (special tool #8404-ADP, Smoke Machine Adapters). Set the smoke/air control switch to SMOKE. NOTE: The flow meter indicator ball will not move in the smoke mode. Press the remote smoke/air start button. NOTE: Make sure that smoke has filled the Evap system by continuing to press the remote smoke/air start button, remove the vehicle fuel cap, and wait for the smoke to exit. Once smoke is detected, reinstall the fuel cap. NOTE: For the best results, introduce smoke into the system for an additional 60 seconds and continue introducing smoke at 15 second intervals, as necessary. While still holding the remote smoke/air start button, use the white light (special tool #8404-CLL, Light, White) to follow the Evap system path, and look for the source of the leak as indicated by exiting smoke. If a leak is concealed from view (at the top of the fuel tank, for example), release the remote smoke/air start button, and use the ultraviolet (UV) black light (special tool #8404-UVL, Light, UV) and the UV goggles (special tool #8404-20, Goggles, Yellow) to look for residual traces of dye that is left behind by the smoke. The exiting smoke deposits a residual fluid that is either bright green or bright yellow when viewed with a UV light. Were any problems found? Yes Repair or replace the leaking component as necessary. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) . No Go To 4
4. CHECKING THE GAS CAP AND FUEL FILLER TUBE Thoroughly check the gas cap and filler tube area for leaks. Was a leak found at the gas cap or filler tube? Yes Go To 5 No Go To 6
5. GAS CAP OR FUEL FILLER TUBE Remove the SMOKE supply tip (black hose) from the service port (if equipped) or from the (special tool #8404-ADP, Smoke Machine Adapters) adapter. Install leak check adapter (special tool #8382, Adapter, Leak Check) (1/4 turn cap) or fuel tank adapter (special tool #6922, Adapter, Fuel Tank) (screw cap) and leak check adapter (special tool #8399, Adapter, Leak Check) (secondary seal depressor) and repeat test 4. Was a leak found at the gas cap adapter? Yes Replace the fuel filler tube assembly. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) . No Replace the gas cap. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) .
6. CHECKING FOR EVAPORATIVE SYSTEM LEAKS IN ZONE 1 NOTE: For testing purposes, the Evap System is divided into three zones. A leak from any of these zones can cause a DTC to set. The lists in the following steps below specify possible leak points in one of the specific zones. Using the list below, check each of the components in Zone 1 of the evaporative system for leaks: Fuel Cap Recirculation Check Valve Vapor Recirculation Line Signal Vapor Line for FVM Flow Management Valve Fuel Tank to Canister Vapor Line Fuel Tank Vent (Check Valve) Vapor Line to Canister Flow Control Orifice Control Valve Liquid Trap Fuel Tank Check Valve Fuel Fill Tube to Tank connector Fuel Fill Tube Damaged or disconnected components Were any problems found? Yes Repair or replace the leaking component as necessary. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) . No Go To 7
7. CHECKING FOR EVAPORATIVE SYSTEM LEAKS IN ZONE 2 NOTE: For testing purposes, the Evap System is divided into three zones. A leak from any of these zones can cause a DTC to set. The lists in the following steps below specify possible leak points in one of the specific zones. Using the list below, check each of the components in Zone 2 of the evaporative system for leaks: Filter ESIM Switch Canister Vent Line Evap Canister Chassis Purge Valve Fuel Tank to Canister Vapor Line connection Evap Purge connection Were any problems found? Yes Repair or replace the leaking component as necessary. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) . No Go To 8
8. CHECKING FOR EVAPORATIVE SYSTEM LEAKS IN ZONE 3 NOTE: For testing purposes, the Evap System is divided into three zones. A leak from any of these zones can cause a DTC to set. The lists in the following steps below specify possible leak points in one of the specific zones. Using the list below, check each of the components in Zone 3 of the evaporative system for leaks: Evap Purge Vacuum Line Connection to Chassis Line Connection to Canister Chassis Purge Line Evap Purge Vacuum Line Connection to Evap Purge Harness Chassis Evap Purge Line connection to Engine Vacuum Evap Purge Valve Service Port Were any problems found? Yes Repair or replace the leaking component as necessary. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) . No Test complete.

CHECKING THE FUEL DELIVERY SYSTEM

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

CHECKING THE TEMPERATURE SENSORS

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

FUEL PRESSURE LEAK DOWN

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

POSSIBLE CAUSES

Scheme 17

1. CHECK FUEL DELIVERY SYSTEM FOR LEAKS AND DAMAGE WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting, or line, the fuel system pressure must be released. Failure to follow these instructions can result in possible serious or fatal injury. Visually and physically inspect the fuel delivery system for external leaks and damage. Is the system leaking or damaged? Yes Repair / replace as necessary. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) . No Go To 2
2. INSTALL APPROPRIATE FUEL LINE ADAPTERS / FITTING FROM GAS AND DIESEL FUEL PRESSURE/DECAY TESTER 8978A Turn the ignition off. WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting, or line, the fuel system pressure must be released. Failure to follow these instructions can result in possible serious or fatal injury. Disconnect the frame rail fuel supply line connector between the fuel supply line and the fuel rail. Install the appropriate Fuel Line Adapters / Fitting from Gas and Diesel Fuel Pressure/Decay Tester (special tool #8978A, Decay Tool, Fuel). Proceed Go To 3
3. INSTALL FUEL PRESSURE GAUGE ASSEMBLY WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting, or line, the fuel system pressure must be released. Failure to follow these instructions can result in possible serious or fatal injury. Connect Gas and Diesel Fuel Pressure/Decay Tester (special tool #8978A, Decay Tool, Fuel), Fuel Inlet Hose (1) and Fuel Outlet Hose (2) to the Fuel Line Adapters / Fitting. Connect Drain Extension Hose 535680 (3) to the Fuel Pressure Gauge Assembly Drain Hose (5). Connect the Reservoir Assembly 534960 (4) to the Drain Extension Hose 535680 (3). WARNING: To reduce the risk of fire and serious possible serious or fatal injury, place Reservoir Assembly 534960 (4) on the floor and out of the way so that it is not a trip hazard. Proceed Go To 4
4. CHECK FUEL PRESSURE WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting, or line, the fuel system pressure must be released. Failure to follow these instructions can result in possible serious or fatal injury. Perform the following procedure to purge air from the system: Open the Fuel System Isolation Valve (1). Close the Flow Test Valve (2). Ignition on, engine not running. With the scan tool, actuate the fuel pump. Open the Flow Test Valve (1) for 10 seconds, then close the Valve. CAUTION: Stop All Actuations. Turn the ignition off. Disconnect, empty and then reconnect the Reservoir Assembly. Turn the ignition on, wait five seconds, turn the ignition off and then wait 1 minute before proceeding. Read the Fuel Pressure Gauge (3) and record the reading. The fuel pressure specification is 407 kPa +/- 34 kPa (59 psi +/- 5 psi). Is the fuel pressure within specifications? Yes Go To 5 No Perform the CHECKING THE FUEL DELIVERY SYSTEM diagnostic procedure as directed. Refer to «CHECKING THE FUEL DELIVERY SYSTEM»(ref-612747-S11199809762014043000000) .
5. CHECK FUEL DELIVERY SYSTEM FOR LEAK DOWN WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting, or line, the fuel system pressure must be released. Failure to follow these instructions can result in possible serious or fatal injury. Close the Fuel System Isolation Valve (1) and then wait five minutes before proceeding. Read the Fuel Inlet (2) and Fuel Outlet (3) Pressure Gauges. The pressure should not drop more than 10 psi on either gauge. Does the fuel pressure drop more than 10 psi? Yes - On Fuel Inlet Gauge (1) Replace the appropriate fuel pump module as indicated in the table below. Vehicle Check Valve Location LC Auxiliary fuel pump module (right-side of fuel tank) LX Auxiliary fuel pump module (right-side of fuel tank) JC Primary fuel pump module (left-side of fuel tank) JS Primary fuel pump module (left-side of fuel tank) MK Primary fuel pump module (left-side of fuel tank) PM Primary fuel pump module (left-side of fuel tank) NOTE: The check valve allows residual fuel pressure to remain in the line and not de-pressurize into the tank when the fuel pump is off. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) . Yes - On Fuel Outlet Gauge (2) Replace the leaking fuel injector(s). Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) . No If directed here by another test, return to that test. Otherwise, test complete.

HARD START FUEL SYSTEM

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .