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Contents Wiring diagrams Section: Testing & Diagnostics All sections

3.6l & 5.7l - Intermittent Condition, Pcm/ecm Reprogramming - Gas, Powertrain Verification Test & Pre-Diagnostic Troubleshooting Procedure Jeep Grand Cherokee WK2

Testing & Diagnostics 1 illustration ~3982 words

DIAGNOSTIC TEST

  1. INTERMITTENT CONDITION NOTE: The conditions that set the DTC are not present at this time. The following list may help in identifying the intermittent condition. 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 may result in possible serious or fatal injury. Perform any Technical Service Bulletins (TSBs) that may apply. Review the scan tool Freeze Frame information. If possible, try to duplicate the conditions under which the DTC set. With the engine running at normal operating temperature, monitor the scan tool parameters related to the DTC while wiggling the wire harness. Look for parameter values to change and/or a DTC to set. Turn the ignition off. Visually inspect the related wire harness. Disconnect all the related harness connectors. Look for any chafed, pierced, pinched, partially broken wires and broken, bent, pushed out, or corroded terminals. Verify correct connector pin fit at the related connectors. Perform a voltage drop test on the related circuits between the suspected inoperative component and the PCM. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position) to perform diagnosis. Inspect and clean all PCM, engine, and chassis grounds that are related to the most current DTC. If numerous trouble codes were set, use a wire schematic and look for any common ground or supply circuits. For any Relay DTCs, actuate the Relay with the scan tool and wiggle the related wire harness to try to interrupt the actuation. For intermittent Evaporative Emission trouble codes perform a visual and physical inspection of the related parts including hoses and the Fuel Filler cap. For intermittent Misfire DTCs check for restrictions in the Intake and Exhaust system, proper installation of Sensors, vacuum leaks, and binding components that are run by the accessory drive belt. Use the scan tool to perform a System Test if one applies to failing component. A co-pilot, data recorder, and/or lab scope should be used to help diagnose intermittent conditions. Were any problems found during the above inspections? Yes Perform the necessary repairs. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-intermittent-condition-pcmecm-reprogramming-gas-powertrain-verification-test-pre-diagnostic-troubleshooting-proc) . No Test Complete.

PCM/TCM FLASH REPROGRAMMING

This procedure is required when one or more of the following situations are true

  1. A Powertrain Control Module (PCM) has been replaced.
  2. Diagnostic Trouble Code (DTC) P1602 - PCM Not Programmed is set.
  3. An updated calibration or software release is available for either the PCM or TCM.

This procedure assumes that the wiTECH™ VCI Pod and StarMOBILE® devices are properly configured to the dealership network with either a wired or wireless connection. The wiTECH™ VCI Pod and StarMOBILE® must also be running the latest operating system and software release. For help on how to network the StarMOBILE®, reference the appropriate Quick Start Networking Guide available on 'DealerCONNECT > Service > StarSCAN® and StarMOBILE® Tools > Online Documentation' or at www.dcctools.com, under the Download Center. For help on how to network the wiTECH™ VCI Pod, use the "Help" tab at the top of the wiTECH™ Diagnostic Application.

TABLE OF CONTENTS

  1. Refer to «SECTION 1 - PCM/TCM FLASH PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-intermittent-condition-pcmecm-reprogramming-gas-powertrain-verification-test-pre-diagnostic-troubleshooting-proc__section-1-pcmtcm-flash-procedure)
  2. Refer to «REQUIRED TOOLS/EQUIPMENT»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-intermittent-condition-pcmecm-reprogramming-gas-powertrain-verification-test-pre-diagnostic-troubleshooting-proc__required-toolsequipment)
  3. Refer to «TECH TIPS AND INFORMATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-intermittent-condition-pcmecm-reprogramming-gas-powertrain-verification-test-pre-diagnostic-troubleshooting-proc__tech-tips-and-information)
  4. Refer to «PARTS REQUIRED»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-intermittent-condition-pcmecm-reprogramming-gas-powertrain-verification-test-pre-diagnostic-troubleshooting-proc__parts-required)

SECTION 1 - PCM/TCM FLASH PROCEDURE

If using the wiTECH™ Diagnostic Application, go to REPAIR PROCEDURE - USING WITECH™ DIAGNOSTIC APPLICATION .

If using the StarMOBILE® Desktop Client, go to REPAIR PROCEDURE - USING STARMOBILE® DESKTOP CLIENT .

REPAIR PROCEDURE - USING WITECH™ DIAGNOSTIC APPLICATION

  1. An overview of ECU flashing is available in the wiTECH™ Diagnostic Application. This overview may be found by first selecting the "Help" tab, then "Help Contents." This will open the wiTECH™ Help System. Selecting "Flashing an ECU" under the "Using the wiTECH™ Diagnostic Application" heading will display a step-by-step instructional guide to flashing an ECU. An instructional video can also be viewed by selecting "Flash ECU" under the "Videos" heading.
  2. Continue to complete the process if the ECU has been replaced. Refer to «SECTION 2 - ADDITIONAL PCM/TCM REPLACEMENT PROCEDURES»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-intermittent-condition-pcmecm-reprogramming-gas-powertrain-verification-test-pre-diagnostic-troubleshooting-proc__section-2-additional-pcmtcm-replacement) .
  3. Type the necessary information on the "Authorized Modification Label" (P/N 04275086AB) and attach near the VECI label (See for details). Refer to «SECTION 3 - AUTHORIZED MODIFICATION LABEL»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-intermittent-condition-pcmecm-reprogramming-gas-powertrain-verification-test-pre-diagnostic-troubleshooting-proc__section-3-authorized-modification-label) .

REPAIR PROCEDURE - USING STARMOBILE® DESKTOP CLIENT

Note. If this flash process is interrupted or aborted, the flash should be restarted.

  1. Open the hood of the vehicle and install a battery charger. Verify that the charging rate provides a continuous charge of 13.2 - 13.5 volts.
  2. Connect the StarMOBILE® to the vehicle data link connector located under the steering column and turn the ignition key to the "RUN" position.
  3. Power on the StarMOBILE®. Launch the StarMOBILE® Desktop Client and connect to the appropriate StarMOBILE® device.
  4. Retrieve the old ECU P/N. From the StarMOBILE® Home screen: Select "ECU View" Select "PCM" Select "More Options" Select "ECU Flash" Record the P/N at the top of the Flash PCM screen for later reference.
  5. Program the ECU. From the StarMOBILE® Home screen: Select "ECU View" Select "PCM" Select "More Options" Select "ECU Flash" Select "Browse for New File" and follow the on screen instructions. Highlight the appropriate calibration based on the P/N recorded in Step 4 e , or by using Year/Model/Engine and appropriate emissions selection for the vehicle being worked on. NOTE: If the tool is not connected to the vehicle, flash files can be searched for by selecting the "Flash Download" button from the Home screen. Select "Download to Scantool" Once the download is complete, select "Close" and then "Back" Highlight the listed calibration, select "Update Controller" and follow the on screen instructions. When the PCM update is complete, select "OK" Verify that the P/N at the top of the Flash PCM screen has updated to the new part number. NOTE: If the flash process is interrupted or aborted, the flash should be restarted.
  6. Continue to complete the process if the ECU has been replaced. Refer to «SECTION 2 - ADDITIONAL PCM/TCM REPLACEMENT PROCEDURES»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-intermittent-condition-pcmecm-reprogramming-gas-powertrain-verification-test-pre-diagnostic-troubleshooting-proc__section-2-additional-pcmtcm-replacement) .
  7. Type the necessary information on the "Authorized Modification Label" (P/N 04275086AB) and attach near the VECI label (See for details). Refer to «SECTION 3 - AUTHORIZED MODIFICATION LABEL»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-intermittent-condition-pcmecm-reprogramming-gas-powertrain-verification-test-pre-diagnostic-troubleshooting-proc__section-3-authorized-modification-label) .

SECTION 2 - ADDITIONAL PCM/TCM REPLACEMENT PROCEDURES

To continue, first determine the type of PCM/TCM in the vehicle, read and write down the required steps, and then proceed to the for additional information on completing the procedures. Refer to STEP-BY-STEP INSTRUCTIONS .

If an NGC3 or NGC4 PCM was replaced, perform the following additional steps and/or routines

  1. PCM Replaced (if equipped with WCM)
  2. Learn ETC (if equipped with ETC)
  3. Check PCM VIN (if NOT equipped with WCM)
  4. Check PCM Odometer
  5. Quicklearn (if equipped with EATX)

If a GPEC PCM was replaced, perform the following additional steps and/or routines

  1. If the vehicle is equipped with a CVT, verify that the TCM has the latest software calibration available.
  2. PCM Replaced (if equipped with WCM)
  3. Learn ETC
  4. Check PCM Odometer
  5. Check PCM VIN (if NOT equipped with WCM)
  6. TCM Quicklearn (if equipped with EATX)

If a CVT TCM was replaced, perform the following additional steps and/or routines

  1. Initialize CVT

If an EGS TCM was replaced, perform the following additional steps and/or routines

  1. Initialize EGS

Check PCM Odometer

From the "Home" screen, select "ECU View".

  1. Select "PCM"
  2. Select "Misc. Functions"
  3. Select "Check PCM Odometer" and follow the on screen instructions.
  4. When complete, select "Finish".

Check PCM VIN

From the "Home" screen, select "ECU View"

  1. Select "PCM"
  2. Select "Misc. Functions"
  3. Select "Check PCM VIN" and follow the on screen instructions.
  4. When complete, select "Finish"

Initialize CVT

From the "Home" screen, select "ECU View"

  1. Select "TCM"
  2. Select "Misc. Functions"
  3. Select "Initialize CVT" and follow the on screen instructions.
  4. When complete, select "Finish"

Initialize EGS

From the "Home" screen, select "ECU View"

  1. Select "TCM"
  2. Select "Misc. Functions"
  3. Select "Initialize EGS" and follow the on screen instructions.
  4. When complete, select "Finish"

Learn ETC

From the "Home" screen, select "ECU View"

  1. Select "PCM"
  2. Select "Misc. Functions"
  3. Select "Learn ETC" and follow the on screen instructions.
  4. When complete, select "Finish"

PCM Replaced

The vehicle PIN (Personal Identification Number) will be required to complete the routine. This information may be obtained in three ways

  1. The original selling invoice
  2. DealerCONNECT > Parts > Key Codes
  3. Contacting the District Manager.

From the "Home" screen, select "ECU View"

  1. Select "WCM"
  2. Select "Misc. Functions"
  3. Select "PCM Replaced" and follow the on screen instructions.
  4. When complete, select "Finish"

Quicklearn

From the "Home" screen, select "ECU View"

  1. Select "PCM"
  2. Select "Misc. Functions"
  3. Select "Quicklearn" and follow the on screen instructions.
  4. When complete, select "Finish"

Update CVT TCM

From the "Home" screen

  1. Select "ECU View"
  2. Select "TCM"
  3. Select "More Options"
  4. Select "ECU Flash"
  5. Select "Browse for New File" and follow the on screen instructions.
  6. Highlight the appropriate calibration.
  7. Select "Download to Scantool"
  8. Once the download is complete, select "Close" and then "Back"
  9. Highlight the listed calibration, select "Update Controller" and follow the on screen instructions.
  10. When the TCM update is complete, select "OK"
  11. Verify that the part number at the top of the "Flash TCM" screen has updated to the latest level.

SECTION 3 - AUTHORIZED MODIFICATION LABEL

Note. The following step is required by law when reprogramming a PCM and/or TCM.

Type the necessary information on the "Authorized Modification Label" and attach near the VECI label.

Scheme 505

Scheme 505: SECTION 3 - AUTHORIZED MODIFICATION LABEL
Scheme 505: SECTION 3 - AUTHORIZED MODIFICATION LABEL
  1. Powertrain Control/Transmission Control Module Part Numbers (Insert P/Ns) Used
  2. Change Authority: TSB XX--XX
  3. Dealer Code: XXXXX
  4. Date: XX-XX-XX

REQUIRED TOOLS/EQUIPMENT

PART NUMBERStarMOBILE®PART NUMBERWiTECH™
NPNBattery ChargerNPNBattery Charger
CH9801StarMOBILE® Tool KitNPNWiiTECH™ Tool Kit
CH9804StarMOBILE® Vehicle CableNPNTechCONNECT PC or equivalent
NPNTechCONNECT PC or equivalent

TECH TIPS AND INFORMATION

  1. The wiTECH™ Diagnostic Application is the preferred method for flashing any Chrysler vehicle ECU. Training aids, including videos, are included under the "Help" tab in the wiTECH™ Diagnostic Application.
  2. To use the StarMOBILE® in Pass-Through Mode requires that the StarMOBILE® is connected to the dealership's network via a wired or wireless connection. For more information on how to use the StarMOBILE in Pass-Through Mode, see the StarMOBILE® training tutorials available on 'DealerCONNECT > Service > StarSCAN® and StarMOBILE® Tools > Training Aids' link or at www.dcctools.com, under the 'Training Aids' link.
  3. If the flash process is interrupted or aborted, the flash should be restarted.
  4. Due to the PCM/TCM programming procedure, a DTC may be set in other ECUs within the vehicle. Some DTCs may cause the MIL to illuminate. From the "Home" screen select "System View". Then select "All DTCs". Press "Clear All Stored DTCs" if there are any DTCs shown on the list.
  5. When replacing a GPEC PCM for a vehicle that is equipped with a CVT, it is extremely important that the PCM and TCM both have the latest software calibrations.
  6. Do not allow the battery charger to time out or the charging rate to climb above 13.5 volts during the flash process.
  7. The StarMOBILE® diagnostic tools fully support Internet connectivity and must be configured for the dealership network. For help on setting up the StarMOBILE® for the dealership network, refer to the StarMOBILE® Quick Start Networking Guide available on 'DealerCONNECT > Service > StarSCAN® and StarMOBILE® Tools > Online Documentation' or at www.dcctools.com, under the download center.
  8. The operating software in the wiTECH™ VCI Pod, wiTECH™ Diagnostic Application, and StarMOBILE® must be programmed with the latest software release. The software level is visible in the blue header at the top of the wiTECH™ Diagnostic Application and StarMOBILE® Desktop Client screens. For instructions on how to update the StarMOBILE®, refer to the StarMOBILE® Update guide available on 'DealerCONNECT > Service > StarSCAN® and StarMOBILE® Tools > Online Documentation' or at www.dcctools.com, under the Download Center. For instructions on how to update the wiTECH™ VCI Pod or wiTECH™ Diagnostic Application, use the "Help" tab at the top of the wiTECH™ Diagnostic Application.

PARTS REQUIRED

QtyPart NumberDESCRIPTION
104275086ABLabel, Authorized Modification

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

  1. SELECTING THE PROPER VERIFICATION TEST The following verification test are for different repairs. Select the appropriate Verification test for the repair that has been completed. If the battery was disconnected for any reason, you must perform the Battery Reconnection procedure in the Service Information. Speed Control repair Go To 2 . Charging System repair Go To 3 . EVAP System repair Go To 4 . All other repairs Go To 5 .
  2. SPEED CONTROL VERIFICATION TEST NOTE: If this vehicle is equipped with an Electronic Throttle Control system and the APP Sensors, PCM or Throttle Body Assembly have been replaced, use the scan tool to perform the ETC RELEARN function. NOTE: After completing the Powertrain Verification Test the Transmission Verification Test must be performed. Refer to «POWERTRAIN VERIFICATION TEST»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-intermittent-condition-pcmecm-reprogramming-gas-powertrain-verification-test-pre-diagnostic-troubleshooting-proc) , and «NAG1 TRANSMISSION VERIFICATION TEST»(/jeep/grand-cherokee/wk2-2010-2013/remont/automatic-trans/#transmission-control-module-tcm-electrical-diagnostics__nag1-transmission-verification-test) . NOTE: If the PCM has been replaced and the correct VIN and mileage have not been programmed, a DTC will set in the ABS Module, Airbag Module and the Wireless Control Module (WCM) or Wireless Ignition Node (WIN). NOTE: If the vehicle is equipped with a Sentry Key Remote Entry, Secret Key data must be updated. Refer to the Service Information for the PCM, WCM/WIN and the Transponder (ignition key) for programming information. Using the scan tool, program the Secret Key information into the PCM using the PCM replaced function under the WCM menu. Inspect the vehicle to make sure that all engine components are properly installed and connected. Connect the scan tool to the data link connector and erase all codes. Turn the speed control ON (if equipped, cruise light will be on). Depress and release the SET Switch when the vehicle speed is greater than 56 km/h (35 mph). The speed control should engage and hold the selected speed. Press and hold the RESUME/ACCEL Switch. The vehicle speed should increase by at least 3 km/h (2 mph). Press and hold the COAST switch. The vehicle speed should decrease. Using caution, press and release the brake pedal. The speed control should disengage. Bring the vehicle speed back up to 56 km/h (35 mph). Press the RESUME/ACCEL switch. The speed control should resume the previously set speed. Hold down the SET switch. The vehicle should decelerate. Make sure vehicle speed is greater than 56 km/h (35 mph) and release the SET Switch. The vehicle should adjust and set a new vehicle speed. Press and release the CANCEL switch. The speed control should disengage. Bring the vehicle speed back up above 56 km/h (35 mph) and engage speed control. Turn the Speed Control Off. (Cruise light will be off). The speed control should disengage. Did the Speed Control pass the above test? Yes Repair is complete. No Check for any related Technical Service Bulletins and/or and perform the appropriate diagnostic procedure. Refer to «DIAGNOSTIC CODE INDEX»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-diagnostic-code-index) .
  3. CHARGING SYSTEM VERIFICATION TEST NOTE: If this vehicle is equipped with an Electronic Throttle Control system and the APP Sensors, PCM or Throttle Body Assembly have been replaced, use the scan tool to perform the ETC RELEARN function. NOTE: After completing the Powertrain Verification Test the Transmission Verification Test must be performed. NOTE: If the PCM has been replaced and the correct VIN and mileage have not been programmed, a DTC will set in the ABS Module, Airbag Module and the Wireless Control Module (WCM) or Wireless Ignition Node (WIN). NOTE: If the vehicle is equipped with a Sentry Key Remote Entry, Secret Key data must be updated. Refer to the Service Information for the PCM, WCM/WIN and the Transponder (ignition key) for programming information. Using the scan tool, program the Secret Key information into the PCM using the PCM replaced function under the WCM menu. Inspect the vehicle to make sure that all components related to the repair are properly installed and connected. With the scan tool, clear DTCs. Perform generator output test. Refer to the appropriate Service Information as necessary. Start the engine and set engine speed to 2000 RPM for at least thirty seconds. Cycle the ignition key off and on. With the scan tool, read the DTCs. Are any DTCs or symptoms remaining? Yes Check for any Technical Service Bulletins and/or and perform the appropriate diagnostic procedure. Refer to «DIAGNOSTIC CODE INDEX»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-diagnostic-code-index) . No Repair is complete.
  4. EVAPORATIVE EMISSION VERIFICATION TEST NOTE: If this vehicle is equipped with an Electronic Throttle Control system and the APP Sensors, PCM or Throttle Body Assembly have been replaced, use the scan tool to perform the ETC RELEARN function. Install the Evaporative Emission Leak Detector (EELD) (special tool #8404B, Kit, EELD And Accessory) according to the instructions in the previous DTC table. 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 of leak indicated by the DTC set in the PCM. Install the service port adapter (special tool #8404-14, Adapter, Evaporative Service Port) on the vehicle's service port. Connect the Air supply hose from the EELD to the vehicle. 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 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. If the indicator ball shows a leak present, perform the smoke test indicated in the previous test and identify the leak and repair. Perform this verification test when the repair is complete. Did the indicator ball indicate the a leak is present? Yes Repeat the DTC test to identify the leak and repair. No Repair is complete.
  5. POWERTRAIN VERIFICATION TEST NOTE: After completing the Powertrain Verification Test the Transmission Verification Test must be performed. NOTE: The Cam/Crank Variation Relearn must be performed anytime there has been a repair/replacement made to a powertrain system, for example: flywheel, valvetrain, camshaft and/or crankshaft sensors or components. NOTE: If the PCM has been replaced and the correct VIN and mileage have not been programmed, a DTC will set in the ABS Module, Airbag Module and the Wireless Control Module (WCM) or Wireless Ignition Node (WIN). NOTE: If the vehicle is equipped with a Sentry Key Remote Entry, Secret Key data must be updated. Refer to the Service Information for the PCM, WCM/WIN and the Transponder (ignition key) for programming information. Using the scan tool, program the Secret Key information into the PCM using the PCM replaced function under the WCM menu. NOTE: If this vehicle is equipped with an Electronic Throttle Control system and the APP Sensors, PCM or Throttle Body Assembly have been replaced, use the scan tool to perform the ETC RELEARN function. NOTE: When replacing an O2 Sensor, the PCM RAM memory must be cleared, either by disconnecting the PCM C1 connector or momentarily disconnecting the Battery negative terminal. The NGC learns the characteristics of each O2 heater element and these old values should be cleared when installing a new O2 sensor. The customer may experience driveability issues if this is not performed. Inspect the vehicle to make sure that all engine components are properly installed and connected. Reassemble and reconnect components as necessary. Connect the scan tool to the data link connector. Make sure the fuel tank has at least a quarter tank of fuel. Turn off all accessories. If the Catalyst was replaced, with the scan tool select "Catalyst Replaced" under the Miscellaneous Menu Option. If a repair/replacement was made to a powertrain system, with the scan tool select the "Cam Crank Relearn" procedure under PCM Miscellaneous Menu Option. If a Comprehensive Component DTC was repaired, perform steps 9-11. If a Major OBDII Monitor DTC was repaired skip those steps and continue verification. After the ignition has been off for at least 10 seconds, restart the vehicle and run two minutes. With the scan tool, monitor the appropriate pre-test enabling conditions until all conditions have been met. Once the conditions have been met, switch screen to the appropriate OBDII monitor, (Audible beeps when the monitor is running). If the repaired OBDII trouble code has reset or was seen in the monitor while on the road test, the repair is not complete. Check for any related technical service bulletins or flash updates and perform the appropriate diagnostic procedure. Refer to «DIAGNOSTIC CODE INDEX»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-diagnostic-code-index) . If the conditions cannot be duplicated, erase all DTCs with the scan tool. If another DTC has set, and follow the path specified for that DTC. Refer to «DIAGNOSTIC CODE INDEX»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-diagnostic-code-index) . Did the OBDII Monitor run successfully and has the Good Trip Counter changed to one or more? Yes Repair is complete. No Check for any related Technical Service Bulletins and/or and perform the appropriate diagnostic procedure. Refer to «DIAGNOSTIC CODE INDEX»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-diagnostic-code-index) .
  1. NO RESPONSE Make sure the scan tool will communicate with the appropriate modules. Are you currently experiencing a NO RESPONSE condition? Yes The NO RESPONSE condition must be properly diagnosed before continuing. Refer to «DIAGNOSIS AND TESTING»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#communication-non-dtc-based-diagnostics) . Refer to «DIAGNOSTIC CODE INDEX»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-diagnostic-code-index) for diagnostic procedures and other possible causes. Refer to «DIAGNOSIS AND TESTING»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#driveability-gas-non-dtc-based-diagnostics) . No Go To 2 .
  2. NO START Is the customer complaint a NO START condition? Yes Check the vehicle for any NO START related PCM DTCs or Vehicle Theft Security related DTCs. If no Theft related DTCs are present, for the No Start related diagnostic procedures. Refer to «DIAGNOSIS AND TESTING»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#driveability-gas-non-dtc-based-diagnostics) . No Go To 3 .
  3. VEHICLE HISTORY AND TSB(s) Continue by reading Powertrain Control Module (PCM) DTCs and record the related Freeze Frame data if any DTCs are present. Whether or not any DTCs are present you will want to check the following items which may assist in repairing the customers 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 Technical Service Bulletins (TSB)s related to the customer's complaint or DTCs. If a TSB applies, follow the instructions per the TSB. Choose the following scenario that best applies. The TSB repaired the customer's complaint. Testing complete. A DTC is present, no TSB applies or the TSB didn't repair the customer's complaint. Go To 4 . No DTCs are present. Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to «INTERMITTENT CONDITION»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-intermittent-condition-pcmecm-reprogramming-gas-powertrain-verification-test-pre-diagnostic-troubleshooting-proc) .
  4. WIRE HARNESS INSPECTION Clear the DTCs. Attempt to duplicate the customer complaint. Whether the customer complaint can be duplicated or not, make a quick wire harness inspection related to the DTCs that were previously cleared. Check the Powertrain Control Module connectors, the suspected component connection, in-line connectors, wire harness splices, PCM power and ground circuits and any related fuses. If the DTCs are fuel or air related, check the fuel level and quality. Were any repairs made that fixed the customer's complaint? Yes Testing complete. No Perform the diagnostic test procedure related to the DTC. and perform the appropriate diagnostic procedure. Refer to «DIAGNOSTIC CODE INDEX»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-diagnostic-code-index) .

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