Dtcs P0420 to P0563: Diagnosis Dodge Nitro I

Diagnostic Test

1. ACTIVE DTC NOTE: A new rear O2 Sensor along with an aging front O2 Sensor may cause the DTC to set. Review the repair history of the vehicle before continuing. NOTE: If an O2 Sensor DTC set along with the Catalytic Converter Efficiency DTC diagnose the O2 Sensor DTC(s) before continuing. NOTE: Check for contaminants that may have damaged the O2 Sensor and Catalytic Converter: contaminated fuel, unapproved silicone, oil and coolant, repair necessary. Start the engine. Allow the engine to reach normal operating temperature. With a scan tool, select View DTCs. NOTE: It may be necessary to drive the vehicle to meet the conditions to set this DTC, try to repeat the conditions in which the fault originally set by reviewing the Freeze Frame data. Is the DTC Active or Pending at this time? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. VISUALLY INSPECT CATALYTIC CONVERTER Inspect the Catalytic Converter for the following damage. Damage Catalytic Converter, dents or holes. Severe discoloration caused by overheating the Catalytic Converter. Catalytic Converter broke internally. Inspect both ends of the converter, inlet and outlet. Leaking Catalytic Converter. Were any problems found? Yes Replace the Catalytic Converter. Repair the condition that may have caused the failure. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. (K902) O2 RETURN UPSTREAM CIRCUIT VOLTAGE CHECK Turn the ignition off. Disconnect the 2/1 O2 Sensor harness connector. Turn the ignition on. Measure the voltage on the (K902) O2 Return Upstream circuit in the O2 Sensor harness connector. Is the voltage at 2.5 volts? Yes Go To 4 . No Go To 5 .
4. (K904) O2 RETURN DOWNSTREAM CIRCUIT VOLTAGE CHECK Turn the ignition off. Disconnect the 2/2 O2 Sensor harness connector. Turn the ignition on. Measure the voltage on the (K904) O2 Return Downstream circuit in the O2 Sensor harness connector. Is the voltage at 2.5 volts? Yes Go To 10 . No Go To 7 .
5. (K902) O2 RETURN UPSTREAM CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C1 and C2 PCM harness connectors. Measure the resistance between ground and the (K902) O2 Return Upstream circuit in the 2/1 O2 Sensor harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K902) O2 Return Upstream circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 6 .
6. (K902) O2 RETURN UPSTREAM CIRCUIT OPEN Measure the resistance of the (K902) O2 Return Upstream circuit from the 2/1 O2 Sensor harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 9 . No Repair the open in the (K902) O2 Return Upstream circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
7. (K904) O2 RETURN DOWNSTREAM CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the 2/2 O2 harness connector. Measure the resistance between ground and the (K904) O2 Return Downstream circuit in the 2/2 O2 Sensor harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K904) O2 Return Downstream circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 8 .
8. (K904) O2 RETURN DOWNSTREAM CIRCUIT OPEN Measure the resistance of the (K904) O2 Return Downstream circuit from the 2/2 O2 Sensor harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go To 9 . No Repair the open in the (K904) O2 Return Downstream circuit. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
9. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Sensor and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Sensor and the Powertrain Control Module connectors. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
10. CHECKING THE EXHAUST SYSTEM FOR LEAKS Turn the ignition off. Raise the vehicle in accordance with the Service Information. WARNING: The normal operating temperature of the exhaust system is very high. Never work around or attempt to service any part of the exhaust system until it has cooled. Special care should be taken when working near the catalytic converter. The temperature of the converter rises to a high level after a short period of engine operating time. Connect Exhaust Cone #8404-EC or #8404-EC to Air Pressure Regulator (with hose) #W-18-MIL-1146AS. CAUTION: The air pressure must not exceed 27.6 kPa (4 psi), otherwise engine damage can occur. Attach shop air to the air pressure regulator. Adjust the Air Pressure Regulator to 27.6 kPa (4 psi) Insert the exhaust cone into the vehicle tail pipe. If the vehicle is equipped with dual exhaust. Use the #8404-ECT with equipped attached plug, plug one side of the dual exhaust pipe. Pressurize the other as described above. Apply Mopar® Air Leak Detector PN# 05191804AA (or an equivalent leak finder liquid) to the following areas: - All welded joints from the exhaust manifold to 152.4 mm (6 inches) behind the downstream O2 sensor - O2 sensor seal points - O2 sensor boss welds - Flange/joint connection(s) - Exhaust manifold to cylinder head connection(s) - EGR solenoid gasket base and tube seal points (if equipped) Watch for the liquid/soapy water to bubble. Use the following definitions to help determine if system or component repair/replacement is necessary: Type 1 Leak is defined as a leak where very small foam like bubbles 1 mm (0.04 of an inch) or less appear. Any Type 1 or greater leaks found in welded joints, O2 sensor seal points or O2 sensor boss welds must be repaired or the component must be replaced. Type 2 Leak is defined as a leak where larger bubbles pea size, 8 mm (0.3 of an inch) or greater appear. Any Type 2 or greater leaks found in flange or joint connections, exhaust manifold to cylinder head connections, or EGR gasket and tube seal points must be repaired or the components must be replaced Leak Location Repair required if results at 4 psi reveal bubble size: Welded joints Type 1, 1 mm (0.04 of an inch) or greater O2 Sensor seal points Type 1, 1 mm (0.04 of an inch) or greater O2 Sensor boss welds Type 1, 1 mm (0.04 of an inch) or greater Flange / joint connections Type 2, 8 mm (0.3 of an inch) or greater Exhaust Manifold to cylinder head connections Type 2, 8 mm (0.3 of an inch) or greater EGR gasket and tube seal points Type 2, 8 mm (0.3 of an inch) or greater If a leak is found that matches the above definition, repair or replace the component as necessary. Once the repair is complete, repeat the procedure to verify that all leaks have been repaired. Were any exhaust leaks found? Yes Repair or replace the leaking exhaust parts as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 11 .
11. ENGINE MECHANICAL CONDITION Check the exhaust for excessive smoke caused by an internal problem in the engine. Is an engine mechanical condition present? Yes Repair the engine mechanical condition as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 12 .
12. AGING O2 SENSOR A new rear O2 Sensor along with an aging front O2 Sensor may cause the DTC to set. Review the vehicles repair history. Has the rear O2 Sensor been replaced without replacing the front O2 Sensor? Yes Replace the Front O2 Sensor as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 13 .
13. CATALYTIC CONVERTER If there are no possible cause remaining, view repair. Repair Replace the Catalytic Converter. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

Scheme 201

1. VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION Ignition on, engine not running. With a scan tool, select View DTCs. Record the Freeze Frame data if any DTCs are present. Whether or not any DTC(s) are Active you will want to check the following items which may assist in repairing the customer's complaint successfully. Check the vehicle's repair history. If the vehicle has a repair history that pertains to the customer's current complaint, review the repair. Inspect the vehicle for any aftermarket accessories that may have been installed incorrectly. Check for any service bulletin(s) related to the customer's complaint or DTC(s). If a service bulletin applies, follow the instructions per the service bulletin. Choose the following scenario that best applies. The service bulletin repaired the customer's complaint. Testing complete. A DTC is present, no service bulletins apply, or the service bulletin didn't repair the customer's complaint. Go To 2 .
2. ACTIVE DTC NOTE: If P0443 is set along with this DTC, perform the diagnostic procedure for «P0443-EVAP PURGE SOLENOID CIRCUIT»(ref-306210-S36336971632008120900000) before continuing with this test. NOTE: If the customer is experiencing an early fuel shut off during the fuel filling process along with P0440, P0441, and P0452 setting, you need to check for restrictions in the EVAP Purge tubes/hoses as well as the Fresh Air Filter before continuing. Start the engine. Allow the engine to idle. Using the scan tool, perform the ESIM FORCED MONITOR TEST. Allow the test to complete. With a scan tool, select View DTCs. NOTE: If any other DTC sets, active or pending, perform the diagnostic procedure for that DTC before proceeding with this test. Is the DTC Active at this time? Yes Go To 3 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
3. VISUAL INSPECTION Inspect the EVAP System for any of the following conditions: - Holes or cracks - Loose seal points - Damaged or missing components - Incorrect routing of hoses and tubes - Loose or missing Fuel Cap - Damaged or missing Fuel Cap seal - Improper installation of the Fuel Cap - Damaged Locking tabs on the Fuel Cap and/or filler tube - Damaged seal points on the Fuel Cap and/or filler tube Were any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. INSUFFICIENT VACUUM SUPPLY TO THE EVAP PURGE SOLENOID Turn the ignition off. Carefully inspect the EVAP Purge Solenoid vacuum supply hose for proper routing. Check for a pinched or plugged hose from the throttle body or intake manifold to the Purge Solenoid. Inspect the vacuum port at the throttle body or intake manifold for any damage or obstructions. Were any problems found? Yes Repair the vacuum supply hose/tube as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go to 5 .
5. EVAP PURGE HOSE/TUBE AND FRESH AIR FILTER OBSTRUCTION Inspect the EVAP Purge hose/tube for proper routing and installation between the EVAP Purge Solenoid and the Fuel Tank and between the Fuel Tank and the EVAP Purge Canister. Make sure the hose/tube and fresh air filter are not damaged, kinked, and free from any obstructions. Were any problems found? Yes Repair or replace as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 6 .
6. EVAP PURGE SOLENOID NOTE: After disconnecting the EVAP Purge Solenoid vacuum connections, inspect the lines and solenoid for signs of contamination. Using a hand vacuum pump, apply 10 in Hg to the "CAN" side of the EVAP Purge Solenoid. NOTE: The solenoid should hold vacuum for a minimum of 15 seconds. Ignition on, engine not running. With the scan tool, actuate the EVAP Purge Solenoid to the ON position. NOTE: The vacuum should drop when the solenoid is actuated. Does the solenoid function as described above? Yes Go To 7 . No Replace the EVAP Purge Solenoid. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
7. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EVAP Purge Solenoid Assembly, ESIM Switch and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Switch, Solenoid, and the Powertrain Control Module connectors. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION Ignition on, engine not running. With a scan tool, select View DTCs and record the related Freeze Frame data if any DTC(s) are present. Whether or not any DTC(s) are Active you will want to check the following items which may assist in repairing the customer's complaint successfully. Check the vehicle's repair history. If the vehicle has a repair history that pertains to the customer's current complaint, review the repair. Inspect the vehicle for any aftermarket accessories that may have been installed incorrectly. Check for any service bulletin(s) related to the customer's complaint or DTC(s). If a service bulletin applies, follow the instructions per the service bulletin. Choose the following scenario that best applies. The service bulletin repaired the customer's complaint. Testing complete. A DTC is present, no service bulletins apply, or the service bulletin didn't repair the customer's complaint. Go To 2 .
2. ACTIVE DTC NOTE: Since a hot vehicle can conceal a leak, it is best to perform this test at room temperature. NOTE: A loose gas cap could have caused this DTC to set. Make sure gas cap is tight and in good condition. Make sure the gas cap meets OEM specifications. Start the engine. Allow the engine to idle. Using the scan tool, perform the ESIM FORCED MONITOR TEST. Allow the test to complete. With a scan tool, select View DTCs. Is the DTC Active at this time? Yes Go To 3 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
3. EVAPORATIVE SYSTEM INSPECTION Perform a visual and physical inspection of the entire Evaporative Emission system. Check for the following conditions: - Holes or cracks - Loose seal points - Evidence of damaged components - Incorrect routing of hoses and tubes - Loose or missing Fuel Filler Cap - Improper installation of the Fuel Fill Cap - Damaged Locking tabs on Cap and/or fill tube - Damaged seal points on Cap and/or fill tube - Fuel cap gasket seal Were any of the above conditions found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. 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. To continue testing you will need Miller Tool #8404A Evaporative Emission Leak Detector (EELD). 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 the EELD to the battery positive terminal and the black ground lead to battery negative terminal. Block the vent hose of the canister if using the service port. 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 appropriate calibration orifice on the tester's control panel (based on DTC leak size). 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 to the size leak indicated by the DTC set in the PCM. Install the service port adapter #8404-14 on the vehicle's service port and block the vent hose of the EVAP Canister (if equipped) or install the #8404-ADP service adapter into the filter line. Connect the Air supply hose from the EELD to the service port (if equipped) or to the #8404-ADP adapter. Press the remote button to activate AIR flow. NOTE: Larger volume fuel tanks, lower fuel levels or if the vehicle is equipped with a Flow Management Valve may indicate high flow and will require 4 to 5 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 5 . No Refer to the Freeze Frame data recorded in step 1. If the data indicates that the vehicle was in motion when the DTC was set, verify that all hoses are properly connected. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
5. EVAPORATIVE EMISSION LEAK DETECTION NOTE: A thorough visual inspection of the EVAP system hoses, tubes, and connections may save time in your diagnosis. Look for any physical damage or signs of wetness at connections. The strong smell of fuel vapors may aid diagnosis also. To continue testing, you will need Miller Tool #8404A Evaporative Emissions Leak Detector (EELD). Remove the Air supply hose from the service port (if equipped) or from the #8404-ADP adapter. Connect the SMOKE supply tip (black hose) to the service port (if equipped) or to the #8404-ADP adapter. 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 indicated reinstall the fuel cap. NOTE: For optimal performance, introduce smoke into the system for an additional 60 seconds; continue introducing smoke at 15 second intervals, as necessary. While still holding the remote smoke/air start button, use the white light (#8404-CLL) to follow the EVAP system path, and look for the source of the leak indicated by exiting smoke. If a leak is concealed from view (i.e, top of fuel tank), release the remote smoke/air start button, and use the ultraviolet (UV) black light #8404-UVL and the yellow goggles 8404-20 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 in color when viewed with a UV light. NOTE: The EVAP System is divided into three zones. A leak from any of these zones can cause this DTC to set. The lists below specify the possible leak points in that specific zone. For further assistance see the Zone Identification Charts below. ZONE 1 1 Fuel Cap. 2 Recirculation Check Valve. 3 Vapor Recirculation Line. 4 Signal Vapor Line for FVM. 5 Flow Management Valve. 6 Fuel Tank to Canister Vapor Line connection. 7 Fuel Tank Vent (Check Valve). 8 Vapor Line to Canister. 9 Flow Control Orifice. 10 Control Valve. 11 Liquid Trap. 12 Fuel Tank. 13 Check valve. 14 Fuel Fill Tube to Tank connector. 15 Fuel Fill Tube. Damaged or disconnected EVAP system components. ZONE 2 1 Filter. 2 ESM. 3 Canister Vent Line. 4 EVAP Canister. 5 Chassis Purge Valve. 6 Fuel Tank to Canister Vapor Line connection. 7 EVAP Purge connection. ZONE 3 1 EVAP Purge Vacuum Line. 2 Connection to Chassis Line. 3 Connection to Canister. 4 Chassis Purge Line. 5 EVAP Purge Vacuum Line. 6 Connection to EVAP Purge Harness. 7 Chassis EVAP Purge Line connection to Engine Vacuum. 8 EVAP Purge Valve. 9 Service Port. NOTE: Carefully inspect the vent side of the EVAP Canister. Due to the filtering system in the canister the smoke may not be as thick. Introducing smoke into the filtered side of the canister may assist in locating the leak. Select the appropriate response from the list below: A leak was found at the gas cap or fuel filler tube Go To 6 . A leak was found in one or more of the EVAP System zones If the leak is at a hose connection, remove the hose then reconnect the hose and check for a leak again. All other leaks repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No leaks were detected Go To 7 .
6. LEAK AT GAS CAP Remove the SMOKE supply tip (black hose) from the service port (if equipped) or to the #8404-ADP adapter. Install gas cap adapter, Miller Tool #8382 (1/4 turn cap) or #6922 (screw cap) and #8399 (secondary seal depressor) and repeat test 5. NOTE: The gas cap adapter is being used as a known good cap. Was a leak found at the gas cap adapter? Yes Replace the Fuel Filler tube assembly. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace the gas cap. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
7. EVAP PURGE SOLENOID OPERATION NOTE: After disconnecting the EVAP Purge Solenoid vacuum connections, inspect the lines and solenoid for any signs of contamination from the EVAP Canister. Turn the ignition off. Disconnect the EVAP Purge Solenoid Vacuum hose at the Throttle Body. NOTE: You are disconnecting the vacuum line at the Throttle Body so you are not disturbing the vacuum connection at the EVAP Purge Solenoid. Press the remote smoke/air start button on the EELD. While holding the remote smoke/air start button, check to see if smoke is exiting the EVAP Purge Solenoid Vacuum hose at the Throttle Body. This indicates that there is a leak internal to the purge valve. NOTE: Below is an optional method of checking the purge valve for leaks if the EELD is unavailable. Turn the ignition off. Disconnect the vacuum hoses at the EVAP Purge Solenoid. Using a hand vacuum pump, apply 10 in HG to the "CAN" of the EVAP Purge Solenoid. NOTE: Monitor the vacuum gauge for at least 15 seconds. Is smoke visible from the EVAP Purge Solenoid Vacuum hose if using the EELD, or will it not hold a vacuum? Yes Replace the EVAP Purge Solenoid. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 8 .
8. EVAP SYSTEM MONITOR SWITCH Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EVAP System Monitor Switch and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Switch and the Powertrain Control Module connectors. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace the EVAP System Monitor Switch in accordance with the Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION Ignition on, engine not running. With a scan tool, select View DTCs and record the related Freeze Frame data if any DTC(s) are present. Whether or not any DTC(s) are Active you will want to check the following items which may assist in repairing the customer's complaint successfully. Check the vehicle's repair history. If the vehicle has a repair history that pertains to the customer's current complaint, review the repair. Inspect the vehicle for any aftermarket accessories that may have been installed incorrectly. Check for any service bulletin(s) related to the customer's complaint or DTC(s). If a service bulletin applies, follow the instructions per the service bulletin. Choose the following scenario that best applies. The service bulletin repaired the customer's complaint. Testing complete. A DTC is present, no service bulletins apply, or the service bulletin didn't repair the customer's complaint. Go To 2 .
2. ACTIVE DTC NOTE: Since a hot vehicle can conceal a leak, it is best to perform this test at room temperature. NOTE: A loose gas cap could have caused this DTC to set. Make sure gas cap is tight and in good condition. Make sure the gas cap meets OEM specifications. Ignition on, engine not running. With a scan tool, select View DTCs. Is the DTC Active at this time? Yes Go To 3 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
3. VISUAL AND PHYSICAL INSPECTION Perform a visual and physical inspection of the entire Evaporative Emission system. Check for the following conditions: - Holes or cracks - Loose seal points - Evidence of damaged components - Incorrect routing of hoses and tubes - Loose or missing Fuel Filler Cap - Improper installation of the Fuel Fill Cap - Damaged Locking tabs on Cap and/or fill tube - Damaged seal points on Cap and/or fill tube - Fuel cap gasket seal Were any of the above conditions found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. 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. To continue testing you will need Miller Tool #8404A Evaporative Emission Leak Detector (EELD). 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 the EELD to the battery positive terminal and the black ground lead to battery negative terminal. Block the vent hose of the canister if using the service port. 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 appropriate calibration orifice on the tester's control panel (based on DTC leak size). 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 to the size leak indicated by the DTC set in the PCM. Install the service port adapter #8404-14 on the vehicle's service port and block the vent hose of the EVAP Canister (if equipped) or install the #8404-ADP service adapter into the filter line. Connect the Air supply hose from the EELD to the service port (if equipped) or to the #8404-ADP adapter. Press the remote button to activate AIR flow. NOTE: Larger volume fuel tanks, lower fuel levels or if the vehicle is equipped with a Flow Management Valve may indicate high flow and will require 4 to 5 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 5 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
5. EVAPORATIVE EMISSION LEAK DETECTION NOTE: A thorough visual inspection of the EVAP system hoses, tubes, and connections may save time in your diagnosis. Look for any physical damage or signs of wetness at connections. The strong smell of fuel vapors may also aid diagnosis. To continue testing, you will need Miller Tool #8404A Evaporative Emissions Leak Detector (EELD). Remove the Air supply hose from the service port (if equipped) or from the #8404-ADP adapter. Connect the SMOKE supply tip (black hose) to the service port (if equipped) or to the #8404-ADP adapter. 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 indicated reinstall the fuel cap. NOTE: For optimal performance, introduce smoke into the system for an additional 60 seconds; continue introducing smoke at 15 second intervals, as necessary. While still holding the remote smoke/air start button, use the white light (#8404-CLL) to follow the EVAP system path, and look for the source of the leak indicated by exiting smoke. If a leak is concealed from view (i.e, top of fuel tank), release the remote smoke/air start button, and use the ultraviolet (UV) black light #8404-UVL and the yellow goggles 8404-20 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 in color when viewed with a UV light. NOTE: The EVAP System is divided into three zones. A leak from any of these zones can cause this DTC to set. The lists below specify the possible leak points in that specific zone. For further assistance see the Zone Identification Charts below. ZONE 1 1 Fuel Cap. 2 Recirculation Check Valve. 3 Vapor Recirculation Line. 4 Signal Vapor Line for FVM. 5 Flow Management Valve. 6 Fuel Tank to Canister Vapor Line connection. 7 Fuel Tank Vent (Check Valve). 8 Vapor Line to Canister. 9 Flow Control Orifice. 10 Control Valve. 11 Liquid Trap. 12 Fuel Tank. 13 Check valve. 14 Fuel Fill Tube to Tank connector. 15 Fuel Fill Tube. Damaged or disconnected EVAP system components. ZONE 2 1 Filter. 2 ESM. 3 Canister Vent Line. 4 EVAP Canister. 5 Chassis Purge Valve. 6 Fuel Tank to Canister Vapor Line connection. 7 EVAP Purge connection. ZONE 3 1 EVAP Purge Vacuum Line. 2 Connection to Chassis Line. 3 Connection to Canister. 4 Chassis Purge Line. 5 EVAP Purge Vacuum Line. 6 Connection to EVAP Purge Harness. 7 Chassis EVAP Purge Line connection to Engine Vacuum. 8 EVAP Purge Valve. 9 Service Port. NOTE: Carefully inspect the vent side of the EVAP Canister. Due to the filtering system in the canister the smoke may not be as thick. Introducing smoke into the filtered side of the canister may assist in locating the leak. Select the appropriate response from the list below: A leak was found at the gas cap or fuel filler tube Go To 6 . A leak was found in one or more of the EVAP System zones If the leak is at a hose connection, remove the hose then reconnect the hose and check for a leak again. All other leaks repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No leaks were detected Go To 7 .
6. LEAK AT GAS CAP Remove the SMOKE supply tip (black hose) from the service port (if equipped) or to the #8404-ADP adapter. Install gas cap adapter, Miller Tool #8382 (1/4 turn cap) or #6922 (screw cap) and #8399 (secondary seal depressor) and repeat test 5. NOTE: The gas cap adapter is being used as a known good cap. Was a leak found at the gas cap adapter? Yes Replace the Fuel Filler tube assembly. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace the gas cap. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .
7. EVAP PURGE SOLENOID NOTE: After disconnecting the EVAP Purge Solenoid vacuum connections, inspect the lines and solenoid for any signs of contamination from the EVAP Canister. This may indicate a faulty check valve. Replace/repair as necessary. Turn the ignition off. Disconnect the EVAP Purge Solenoid Vacuum hose at the Throttle Body. NOTE: You are disconnecting the vacuum line at the Throttle Body so you are not disturbing the vacuum connection at the EVAP Purge Solenoid. Press the remote smoke/air start button on the EELD. While holding the remote smoke/air start button, check to see if smoke is exiting the EVAP Purge Solenoid Vacuum hose at the Throttle Body. This indicates that there is a leak internal to the purge valve. NOTE: Below is an optional method of checking the purge valve for leaks if the EELD is unavailable. Turn the ignition off. Disconnect the vacuum supply hose at the EVAP Purge Solenoid. Using a hand vacuum pump, apply 10 in HG to the "CAN" of the EVAP Purge Solenoid. NOTE: Monitor the vacuum gauge for at least 15 seconds. Is smoke visible from the EVAP Purge Solenoid if using the EELD, or not hold a vacuum? Yes Replace the EVAP Purge Solenoid. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 8 .
8. EVAP SYSTEM MONITOR SWITCH Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EVAP System Monitor Switch and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Switch and the Powertrain Control Module connectors. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace the EVAP System Monitor Switch per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. DTC IS ACTIVE NOTE: If DTC P0455-EVAP SYSTEM LARGE LEAK is set along with this DTC, perform the diagnostic procedure for «P0455-EVAP PURGE SYSTEM LARGE LEAK»(ref-306210-S11876592372008120900000) before continuing with this test. NOTE: Do not replace the gas cap for DTC P0457-EVAP SYSTEM - LOOSE FUEL CAP. With a scan tool, select View DTCs. Is the status Active for DTC P0455-EVAP SYSTEM LARGE LEAK along with this DTC? Yes Perform the diagnostic procedure for «P0455-EVAP PURGE SYSTEM LARGE LEAK»(ref-306210-S11876592372008120900000) . No No repair is necessary. Verify that the gas cap is in place and tight. Clear DTCs and follow the directions outlined in the service information under Instrument Cluster on resetting the odometer or message center display.

Scheme 202

1. ACTIVE DTC Turn the ignition on. Start the engine and allow it to reach operating temperature. WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death. With a scan tool, select View DTCs. Is the DTC Active at this time? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. CAN C or ECT DTCS CURRENTLY ACTIVE Are any CAN C or ECT DTCs Active at this time? Yes Refer to the appropriate diagnostics for the ECT Sensor or CAN C Bus DTC. No Go To 3 .
3. COOLING FAN CONTROL CIRCUIT DTCS SET IN THE TIPM Are any Cooling Fan Control Circuit DTCs set in the TIPM? Yes Diagnose the appropriate Cooling Fan Control Circuit DTC in the TIPM No Go To 4 .
4. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Relay, Totally Integrated Power Module (TIPM), and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Relay, Totally Integrated Power Module (TIPM), and the Powertrain Control Module (PCM) connectors. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. ACTIVE DTC Turn the ignition on. Start the engine and allow it to reach operating temperature. WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death. With a scan tool, select View DTCs. Is the DTC Active at this time? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. CAN C or ECT DTCS CURRENTLY ACTIVE Are any CAN C or ECT DTCs Active at this time? Yes Refer to the appropriate diagnostics for the ECT Sensor or CAN C Bus DTC. No Go To 3 .
3. COOLING FAN CONTROL CIRCUIT DTCS SET IN THE TIPM Are any Cooling Fan Control Circuit DTCs set in the TIPM? Yes Diagnose the appropriate Cooling Fan Control Circuit DTC in the TIPM No Go To 4 .
4. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Relay, Totally Integrated Power Module (TIPM), and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Relay, Totally Integrated Power Module (TIPM), and the Powertrain Control Module (PCM) connectors. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

Scheme 203

1. ACTIVE DTC Ignition on, engine not running. NOTE: Check for any Bus Communication DTCs. If no Bus or Communication DTCs are set, check for active DTCs stored in the Anti-Lock Brake Module. Any bus or communication DTCs or VSS DTCs in the Anti-Lock Brake Module must be properly diagnosed before continuing. Start the engine. Allow the engine to idle. NOTE: It may be necessary to drive the vehicle for the fault to become Active. With a scan tool, select View DTCs. Is the status Active or Pending for this DTC? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. VISUAL INSPECTION NOTE: This code can set due to tire circumference differences and from the front or rear wheels being on a slippery surface while the opposite tires are not. This code may also set on a hard acceleration on loose gravel or during other off road driving conditions. Check tire pressure of all the tires. Check tire wear on all the tires. Ask the customer what the road and driving conditions were like when the fault set. Were any problems found? Yes Repair as necessary. If the code set during a front OR rear wheel spin condition, no repair is necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Wheel Speed Sensors and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Wheel Speed Sensor and the Powertrain Control Module connectors. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. ACTIVE DTC Ignition on, engine not running. NOTE: Check for any Bus Communication DTCs. If no Bus or Communication DTCs are set, check for active DTCs stored in the Anti-Lock Brake Module. Any bus or communication DTCs or VSS DTCs in the Anti-Lock Brake Module must be properly diagnosed before continuing. With a scan tool, view DTCs and record the related Freeze Frame data. Is the DTC Active at this time? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. VISUAL INSPECTION NOTE: This code can set due to tire circumference differences and from the front or rear wheels being on a slippery surface while the opposite tires are not. This code may also set on a hard acceleration on loose gravel or during other off road driving conditions. Check tire pressure of all the tires. Check tire wear on all the tires. Ask the customer what the road and driving conditions were like when the fault set. Were any problems found? Yes Repair as necessary. If the code set during a front OR rear wheel spin condition, no repair is necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Wheel Speed Sensors and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Wheel Speed Sensor and the Powertrain Control Module connectors. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. ACTIVE DTC NOTE: If any other Throttle Body DTCs are present, they must be diagnosed and repaired before continuing this test. Start the engine. Allow the engine to reach normal operating temperature. WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death. With a scan tool, select View DTCs. NOTE: It may be necessary to drive the vehicle to meet the conditions to set this DTC, try to repeat the conditions in which the fault originally set by reviewing the Freeze Frame data. Is the DTC Active or Pending at this time? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. AIR INDUCTION SYSTEM Inspect the Air Induction System for the following problems: Restrictions: Dirty Air Cleaner, Foreign material trapped in the air intake tube, etc. Were any problems found? Yes Repair or replace as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. PCV SYSTEM Inspect the PCV system for the following problems: Restrictions - sticking valve, collapsed hoses or tubes, obstructed passages or ports, etc. Were any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. THROTTLE BODY OPERATION Inspect the throttle body for carbon build up, other restrictions, and a bent throttle plate using a straight edge. WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death. While the vehicle is running, lightly tap on ETC Motor with your hand and listen for idle to raise. Were any problems found or did the idle fluctuate while tapping on the ETC Motor? Yes Verify that there is good pin to terminal contact at the Throttle Body and the Powertrain Control Module connectors. If OK, replace the Throttle Body Assembly. Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 5 .
5. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Throttle Body and Powertrain Control Module connectors. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

1. ACTIVE DTC NOTE: If any other Throttle Body DTCs are present, they must be diagnosed and repaired before continuing this test. Start the engine. WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death. Allow the engine to reach normal operating temperature. With a scan tool, select View DTCs. NOTE: It may be necessary to drive the vehicle to meet the conditions to set this DTC, try to repeat the conditions in which the fault originally set by reviewing the Freeze Frame data. Is the DTC Active or Pending at this time? Yes Go To 2 . No Refer to the «INTERMITTENT CONDITION»(ref-306207-S19641665412008120900000) Diagnostic Procedure.
2. AIR INDUCTION SYSTEM Inspect the Air Induction System for the following problems: Leaks: Air Intake tube connection, Air Cleaner housing, etc. Were any problems found? Yes Repair or replace as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 3 .
3. PCV SYSTEM Inspect the PCV system for the following problems: Leaks - cracked or damaged hoses or tubes, poor hose or tube connections, PCV valve stuck open, etc. Were any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 4 .
4. ENGINE VACUUM LEAKS WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death. Start the engine. Inspect the vehicle for external vacuum leaks. Inspect the engine for internal leaks. Were any vacuum leaks found? Yes Repair the vacuum leak as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 5 .
5. THROTTLE BODY OPERATION Inspect the throttle body for carbon build up, other restrictions, and a bent throttle plate using a straight edge. WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death. While the vehicle is running, lightly tap on ETC Motor with your hand and listen for idle to raise. Were any problems found or did the idle fluctuate while tapping on the ETC Motor? Yes Verify that there is good pin to terminal contact at the Throttle Body and the Powertrain Control Module connectors. If OK, replace the Throttle Body Assembly. Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Go To 6 .
6. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Throttle Body and Powertrain Control Module connectors. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) . No Replace and program the Powertrain Control Module per Service Information. Perform «POWERTRAIN VERIFICATION TEST»(ref-306217-S13377649292008120900000) .

Scheme 204

1. ACTIVE DTC Ignition on, engine not running. With the scan tool, select View PCM DTCs. Is the DTC Active at this time? Yes Go To 2 . No Go To 6 .
2. NO COMMUNICATION WITH SKIM With the scan tool, attempt to communicate with the SKIM. Can the scan tool communicate with the SKIM? Yes Go To 3 . No Refer to «VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS»(ref-306165-S32600166862008120900000) and perform the appropriate Diagnostic Procedure. Perform «SKREEM/SKIM VERIFICATION TEST»(ref-306165-S38861671682008120900000) .
3. SKIM TROUBLE CODES SET With the scan tool, check for SKIM DTCs. Are any DTCs present in the SKIM? Yes Refer to «VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS»(ref-306165-S32600166862008120900000) and perform the appropriate Diagnostic Procedure. Perform «SKREEM/SKIM VERIFICATION TEST»(ref-306165-S38861671682008120900000) . No Go To 4 .
4. VIN PROGRAMMED INTO PCM With the scan tool, display the VIN that is programmed in the PCM. Has a VIN been programmed into the PCM? Yes Go To 5 . No Program the correct VIN into the PCM and retest. Perform «SKREEM/SKIM VERIFICATION TEST»(ref-306165-S38861671682008120900000) .
5. POWERTRAIN CONTROL MODULE (PCM) Turn the ignition off. Replace and program the SKIM per Service Information. Ignition on, engine not running. With the scan tool, erase all SKIM and PCM DTCs. Attempt to start and idle the engine. With the scan tool, select View PCM DTCs. Does the scan tool display this code? Yes NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Replace and program the Powertrain Control Module per Service Information. Perform «SKREEM/SKIM VERIFICATION TEST»(ref-306165-S38861671682008120900000) . No Test Complete.
6. IGNITION KEY NOTE: You must obtain the SKIM pin number. NOTE: This DTC could have been set if the SKIM harness connector was disconnected, or if the SKIM was replaced recently. NOTE: All keys that the customer uses for this vehicle must be tested to verify they are operating properly. Ignition on, engine not running. Verify the correct VIN is programmed into the PCM and SKIM. Turn the ignition off. With the next customer key turn the ignition key on and crank the engine to start. With the scan tool, read the PCM DTCs. Look for P0513. Is the DTC P0513 still active? Yes Replace the Ignition Key. Perform «SKREEM/SKIM VERIFICATION TEST»(ref-306165-S38861671682008120900000) . No Test Complete. NOTE: If this DTC cannot be reset, it could have been an actual theft attempt.

Scheme 205