Jeep Wrangler TJ. Manual - part 181

POWERTRAIN VERIFICATION TEST VER - 4

APPLICABILITY

t to the data link connector and erase all codes.

6. Turn the speed control ON (if equipped, cruise light will be on).
7. Depress and release the SET Switch when the vehicle speed is greater than 35 MPH. The
speed control should engage and hold the selected speed.
8. Press and hold the RESUME/ACCEL Switch. The vehicle speed should increase by at least
2 MPH.
9. Press and hold the COAST switch. The vehicle speed should decrease.
10. Using caution, press and release the brake pedal. The speed control should disengage.
11. Bring the vehicle speed back up to 35 MPH.
12. Press the RESUME/ACCEL switch. The speed control should resume the previously set
speed.
13. Hold down the SET switch. The vehicle should decelerate.
14. Ensure vehicle speed is greater than 35 mph and release the SET Switch. The vehicle
should adjust and set a new vehicle speed.
15. Press and release the CANCEL switch. The speed control should disengage.
16. Bring the vehicle speed back up above 35 mph and engage speed control.
17. Turn the Speed Control Off. (Cruise light will be off). The speed control should disengage.
18. NOTE: OVERSHOOT/UNDERSHOOT FOLLOWING SPEED CONTROL SET.
19. If the vehicle operator repeatedly presses and releases the SET button with their foot off of
the accelerator (referred to as

9lift foot set9), the vehicle may accelerate and exceed the desired

set speed by up to 5 mph (8 km/h).
20. It may also decelerate to less than the desired set speed, before finally achieving the desired
set speed.
21. The Speed Control System has an adaptive strategy that compensates for vehicle-to-vehicle
variations in speed control cable lengths.
22. When the speed control is set with the vehicles operators foot off of the accelerator pedal,
the speed control thinks there is excessive speed control cable slack and adapts accordingly.
23. If the

9lift foot sets9 are continually used, a speed control overshoot/undershoot condition

will develop.
24. To

9unlearn9 the overshoot/undershoot condition, the vehicle operator has to press and

release the set button while maintaining the desired set speed using the accelerator pedal (not
decelerating or accelerating).
25. Then turn the cruise control switch to the OFF position (or press the CANCEL button if
equipped) after waiting 10 seconds.
26. This procedure must be performed approximately 10-15 times to completely unlearn the
overshoot/undershoot condition.
Did the Speed Control pass the above test?

All

Yes

→ Repair is complete.

→ Check for any related Technical Service Bulletins and/or refer to the

appropriate Symptom list (Diagnostic Procedure).

449

VERIFICATION TESTS

Verification Tests —

Continued

POWERTRAIN VERIFICATION TEST VER - 5

APPLICABILITY

1. NOTE: After completing the Powertrain Verification Test the Transmission Verifi-
cation Test must be performed.
2. 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 SKIM.
3. NOTE: If the vehicle is equipped with a Sentry Key Immobilizer System, Secret Key
data must be updated. Refer to the Service Information for the PCM, SKIM and the
Transponder (ignition key) for programming information.
4. NOTE: When replacing an O2 Sensor, the PCM RAM memory must be cleared,
either by disconnecting the PCM C-1 connector or momentarily disconnecting the
Battery negative terminal.
5. 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.
6. Inspect the vehicle to ensure that all engine components are properly installed and
connected. Reassemble and reconnect components as necessary.
7. Connect the DRBIII

t to the data link connector.

8. Ensure the fuel tank has at least a quarter tank of fuel. Turn off all accessories.
9. If the Catalyst was replaced, with the DRBIII

t go to the Miscellaneous Menu Option

9Catalyst Replaced9 and press enter.
10. If a Comprehensive Component DTC was repaired, perform steps 9 - 12. If a Major OBDII
Monitor DTC was repaired skip those steps and continue verification.
11. After the ignition has been off for at least 10 seconds, restart the vehicle and run 2 minutes.
12. With the DRBIII

t, 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).
13. 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 return to Symptom List.
14. If the conditions cannot be duplicated, erase all DTCs with the DRBIII

15. If another DTC has set, return to the Symptom List 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?

All

Yes

→ Repair is complete.

→ Check for any related Technical Service Bulletins and/or refer to the

appropriate Symptom list (Diagnostic Procedure).

450

VERIFICATION TESTS

Verification Tests —

Continued

POWERTRAIN VERIFICATION TEST VER - 6

APPLICABILITY

1. Install the Miller Tool #8404 Evaporative Emission Leak Detector (EELD). 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 is now calibrated the
flow meter in liters per minute to the size leak indicated by the DTC set in the PCM.
7. Connect the Air supply hose from the EELD to the vehicle.
8. Press the remote button to activate AIR flow.
9. 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.
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??

All

Yes

→ Repeat the DTC test to identify the leak and repair.

→ Repair is complete.

SKIS VERIFICATION

APPLICABILITY

1. Reconnect all previously disconnected components and connectors.
2. Obtain the vehicle’s unique Personal Identification Number (PIN) assigned to it’s original
SKIM. This number can be obtained from the vehicle’s invoice or Chrysler’s Customer Center
(1-800-992-1997).
3. NOTE: When entering the PIN, care should be taken because the SKIM will only
allow 3 consecutive attempts to enter the correct PIN. If 3 consecutive incorrect PINs
are entered, the SKIM will Lock Out the DRB for 1 hour.
4. To exit Lock Out mode, the ignition key must remain in the Run position continually for 1
hour. Turn off all accessories and connect a battery charger if necessary.
5. With the DRB, select Theft Alarm, SKIM and Miscellaneous. Then, select the desired
procedure and follow the steps that will be displayed.
6. If the SKIM has been replaced, ensure all of the vehicle ignition keys are programmed to the
new SKIM.
7. NOTE: Prior to returning vehicle to the customer, perform a module scan to be sure
that all DTCs are erased. Erase any DTCs that are found.
8. With the DRB, erase all DTCs. Perform 5 ignition key cycles leaving the key on for at least
90 seconds per cycle.
9. With the DRB, read the SKIM DTCs.
Are there any SKIM DTCs?

All

Yes

→ Repair is not complete, refer to appropriate symptom.

→ Repair is complete.

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VERIFICATION TESTS

Verification Tests —

Continued

TRANSMISSION NO TROUBLE CODE VERIFICATION TEST

APPLICABILITY

1. Inspect the vehicle to ensure that all engine and transmission components are properly
installed and connected. Assemble and connect components as necessary.
2. Check if the initial symptom still exists, this may require a road test. If the symptom still
exists, return to the symptom list and perform the appropriate symptom. Make sure to check
for any Technical Service Bulletins that may apply.
3. With the DRBIII

t, erase any erroneous DTCs that may have been set due to a test procedure.

Does the symptom still exist?

All

Yes

→ Repair is not complete, refer to appropriate symptom.

→ Repair is complete.

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VERIFICATION TESTS

Verification Tests —

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