Operation CHARM: Car repair manuals for everyone.
Home >> Jeep Truck >> 2010 >> Commander 4WD V8-5.7L >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Verification Tests >> Powertrain Verification Test

Powertrain Verification Test






POWERTRAIN VERIFICATION TEST

For a complete wiring diagram, refer to the Wiring Information.

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.

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.

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.

1. Inspect the vehicle to make sure that all engine components are properly installed and connected.
2. Connect the scan tool to the data link connector and erase all codes.
3. Turn the speed control ON (if equipped, cruise light will be on).
4. 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.
5. Press and hold the RESUME/ACCEL Switch. The vehicle speed should increase by at least 3 km/h (2 mph).
6. Press and hold the COAST switch. The vehicle speed should decrease.
7. Using caution, press and release the brake pedal. The speed control should disengage.
8. Bring the vehicle speed back up to 56 km/h (35 mph).
9. Press the RESUME/ACCEL switch. The speed control should resume the previously set speed.
10. Hold down the SET switch. The vehicle should decelerate.
11. 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.
12. Press and release the CANCEL switch. The speed control should disengage.
13. Bring the vehicle speed back up above 56 km/h (35 mph) and engage speed control.
14. 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 Testing and Inspection Perform the appropriate diagnostic procedure.

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.

1. Inspect the vehicle to make sure that all components related to the repair are properly installed and connected.
2. With the scan tool, clear DTCs.
3. Perform generator output test. Refer to the appropriate Service Information as necessary.
4. Start the engine and set engine speed to 2000 RPM for at least thirty seconds.
5. Cycle the ignition key off and on.
6. With the scan tool, read the DTCs.

Are any DTCs or symptoms remaining?

Yes

- Check for any Technical Service Bulletins and/or Testing and Inspection Perform the appropriate diagnostic procedure.

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.

1. Install the Evaporative Emission Leak Detector (EELD) 8404A according to the instructions in the previous DTC table.
2. Set the smoke/air control switch to AIR.
3. 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).
4. Press the remote smoke/air start button.
5. Position the red flag on the air flow meter so it is aligned with the indicator ball.
6. 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.
7. Install the service port adapter 8404-14 on the vehicle's service port.
8. Connect the Air supply hose from the EELD to the vehicle.
9. 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.

10. Compare the flow meter indicator ball reading to the red flag.
11. ABOVE the red flag indicates a leak present.
12. BELOW the red flag indicates a sealed system.
13. 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.

1. 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.
2. Inspect the vehicle to make sure that all engine components are properly installed and connected. Reassemble and reconnect components as necessary.
3. Connect the scan tool to the data link connector.
4. Make sure the fuel tank has at least a quarter tank of fuel. Turn off all accessories.
5. If the Catalyst was replaced, with the scan tool select "Catalyst Replaced" under the Miscellaneous Menu Option.
6. 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.
7. 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.
8. After the ignition has been off for at least 10 seconds, restart the vehicle and run two minutes.
9. 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).
10. 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 Testing and Inspection Perform the appropriate diagnostic procedure.
11. If the conditions cannot be duplicated, erase all DTCs with the scan tool.
12. If another DTC has set, Testing and Inspection and follow the path specified for that DTC.

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 Testing and Inspection Perform the appropriate diagnostic procedure.

pro multis · About Operation CHARM