Jeep Grand Cherokee WJ. Manual - part 687

TEST

ACTION

APPLICABILITY

If there are no possible causes remaining, view repair.

All

Repair

Replace and program the Sentry Key Immobilizer Module in
accordance with the Service Information.
Perform SKIS VERIFICATION.

Turn the ignition off.
Note: Visually inspect the related wiring harness. Look for any chafed,
pierced, pinched, or partially broken wires.
NOTE: Visually inspect the related wiring harness connectors. Look for
broken, bent, pushed out, or corroded terminals.
Note: Refer to any Technical Service Bulletins (TSB) that may apply.
Were any problems found?

All

Yes

→

Repair wiring harness/connectors as necessary.
Perform SKIS VERIFICATION.

→

Test Complete.

304

VEHICLE THEFT/SECURITY

TRANSPONDER COMMUNICATION FAILURE —

Continued

Verification Tests

BODY VERIFICATION TEST - VER 1

APPLICABILITY

1. Disconnect all jumper wires and reconnect all previously disconnected components and
connectors.
2. If the Sentry Key Immobilizer Module (SKIM) or the Powertrain Control Module (PCM) were
replaced, proceed to number 7. If the SKIM or PCM were not replaced, continue to the next
number.
3. If the Body Control Module was replaced, turn the ignition on for 15 seconds before
attempting to start (to learn VIN) or engine may not start (if VTSS equipped).
4. If the vehicle is equipped with VTSS, use the DRBIII and enable VTSS. Program other
options as necessary.
5. If the Passenger Door Module was replaced, use the DRBIII and program all RKE
transmitters used with this vehicle.
6. If any repairs were made to the HVAC System, disconnect the battery for 30 seconds and
then reconnect or using the DRBIII, recalibrate the HVAC doors. Proceed to number 14.
7. Obtain the Vehicle’s unique PIN assigned to it’s original SKIM from either the vehicle’s
invoice or from Chrysler’s Customer Center (1-800-992-1997).
8. With the DRBIII, select THEFT ALARM, SKIM, MISCELLANEOUS and select SKIM
REPLACED. Enter the 4 digit PIN to put SKIM in Secured Access Mode.
9. The DRBIII will prompt you through the following steps. (1) Program the country code into
the SKIM’s memory. (2) Program the vehicle’s VIN into the SKIM’s memory. (3) Transfer the
vehicle’s Secret Key data from the PCM.
10. Once secured access mode is active, the SKIM will remain in that mode for 60 seconds.
11. Using the DRBIII, program all customer keys into the SKIM’s memory. This requires that
the SKIM be in secured access mode, using the 4 digit code.
12. Note: If the PCM is replaced, the VIN and the unique Secret Key data must be transfered
from the SKIM to the PCM. This procedure requires the SKIM to be placed in secured access
mode using the 4-digit code.
13. Note: If 3 attempts are made to enter secured access mode using an incorrect PIN, secured
access mode will be locked out for 1 hour which causes the DRBIII to display BUS +\-
SIGNALS OPEN. To exit this mode, turn ignition to the RUN position for 1 hour.
14. Ensure all accessories are turned off and the battery is fully charged.
15. Ensure that the Ignition is on, and with the DRBIII, erase all Diagnostic Trouble Codes
from ALL modules. Start the engine and allow it to run for 2 minutes and fully operate the
system that was malfunctioning.
16. Turn the ignition off and wait 5 seconds. Turn the ignition on and using the DRBIII, read
DTC’s from ALL modules.
Are any DTC’s present or is the original complaint still present?

All

Yes

→

Repair is not complete, refer to appropriate symptom.

→

Repair is complete.

305

VERIFICATION TESTS

CHARGING VERIFICATION - VER-3

APPLICABILITY

1. Inspect the vehicle to ensure that all engine components are properly installed and
connected. Reassemble and reconnect components as necessary.
2. If the PCM has been replaced, perform step 3. Otherwise, continue with step 4.
3. If the vehicle is equipped with a factory theft alarm, start the engine at least 20 times in
order to be able to activate the alarm system when desired.
4. With the DRB, erase all diagnostic trouble codes (DTCs).
5. Start the engine.
6. Raise the engine speed to 2000 RPM for at least 30 seconds.
7. Allow the engine to idle.
8. Turn the ignition off for 20 seconds.
9. Turn the ignition on.
10. With the DRB, read ECM and PCM DTCs.
11. If this DTC has reset, or another DTC has set, look for any Technical Service Bulletins
(TSBs) that may relate to this condition. Return to the Symptom List if necessary.
12. If the charging system is functioning correctly and there are no DTCs, the repair is now
complete.
Are any DTCs or symptoms remaining?

All

Yes

→

Repair is not complete, refer to appropriate symptom.

→

Repair is complete.

NO START VERIFICATION - VER-1

APPLICABILITY

1. NOTE: IMPORTANT! If the Engine Control Module, Sentry Key Immobilizer
Module or Powertrain Control Module have been replaced, ensure the programming
procedures for these modules have been performed in accordance with the Service
Information.
2. Inspect the vehicle to ensure that all engine components are properly installed and
connected. Reassemble and reconnect components as necessary.
3. Inspect the engine oil for contamination. If it is contaminated, change the oil and filter.
4. With the DRB, erase all diagnostic trouble codes (DTCs).
5. Turn the ignition off for at least 10 seconds.
6. Attempt to start the engine.
7. If the engine is unable to start, look for any Technical Service Bulletins (TSBs) that may
relate to this condition. Return to the Symptom List if necessary.
8. If the engine starts and continues to run, the repair is now complete.
Are any DTCs or symptoms remaining?

All

Yes

→

Repair is not complete, refer to appropriate symptom.

→

Repair is complete.

306

VERIFICATION TESTS

Verification Tests —

Continued

ROAD TEST VERIFICATION - VER-2

APPLICABILITY

1. Inspect the vehicle to ensure that all engine components are properly installed and
connected. Reassemble and reconnect components as necessary.
2. If this verification procedure is being performed after a non-DTC test, perform steps 3 and
4.
3. Check to see if the initial symptom still exists. If there are no trouble codes and the symptom
no longer exists, the repair was successful and testing is now complete.
4. If the initial or another symptom exists, the repair is not complete. Check all pertinent
Technical Service Bulletins (TSBs) and return to the Symptom List if necessary.
5. For previously read DTCs that have not been dealt with, return to the Symptom List and
follow the diagnostic path for that DTC; otherwise, continue.
6. If the engine control module (ECM) has not been changed, perform steps 7 and 8, otherwise,
continue with step 9.
7. With the DRB, erase all diagnostic trouble codes (DTCs), then disconnect the DRB.
8. Turn the ignition off for at least 10 seconds.
9. Ensure no DTCs remain by performing steps 10 through 13.
10. Road test the vehicle. For some of the road test, go at least 64 km/h (40 MPH). If this test
is for an A/C Relay Control Circuit, drive the vehicle for at least 5 minutes with the A/C on.
11. At some point, stop the vehicle and turn the engine off for at least 10 seconds, then restart
the engine and continue.
12. Upon completion of the road test, turn the engine off and check for DTCs with the DRB.
13. If the repaired DTC has reset, the repair is not complete. Check for any pertinent Technical
Service Bulletins (TSBs) and return to the Symptom List. If there are no DTCs, the repair was
successful and is now complete.
Are any DTCs or symptoms remaining?

All

Yes

→

Repair is not complete, refer to appropriate symptom.

→

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 III 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 DRBIII

t, 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 DRBIII

t, erase all DTCs. Perform 5 ignition key cycles leaving the key on for at

least 90 seconds per cycle.
9. With the DRBIII

t, read the SKIM DTCs.

Are there any SKIM DTCs?

All

Yes

→

Repair is not complete, refer to appropriate symptom.

→

Repair is complete.

307

VERIFICATION TESTS

Verification Tests —

Continued

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