key CHRYSLER VOYAGER 2001 Service Manual

Symptom List:
TRANSPONDER COMMUNICATION FAILURE
TRANSPONDER CYCLIC REDUNDANCY CHECK (CRC) FAILURE
TRANSPONDER ID MISMATCH
TRANSPONDER RESPONSE MISMATCH
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be TRANSPONDER COMMUNICA-
TION FAILURE.
When Monitored and Set Condition:
TRANSPONDER COMMUNICATION FAILURE
When Monitored: At ignition on and during Key Programming Mode.
Set Condition: When the SKIM does not receive a transponder response after 8 consec-
utive transponder read attempts within 2.0 seconds.
TRANSPONDER CYCLIC REDUNDANCY CHECK (CRC) FAILURE
When Monitored: At ignition on and during Key Programming Mode.
Set Condition: When 5 consecutive transponder signal transmissions are sent to the
SKIM with the correct message format but with invalid data.
TRANSPONDER ID MISMATCH
When Monitored: At ignition on and during Key Programming Mode.
Set Condition: When the transponder ID read by the SKIM does not match any of the
transponder ID's stored in the SKIM's memory.
TRANSPONDER RESPONSE MISMATCH
When Monitored: At ignition on and during Key Programming Mode.
Set Condition: When the transponder's crypto algorithm result fails to match the SKIM's
result.
POSSIBLE CAUSES
CHECKING MULTIPLE KEY OPERATION
SKIM
INTERMITTENT WIRING HARNESS PROBLEM
REPLACE IGNITION KEY
272
VEHICLE THEFT/SECURITY

TEST ACTION APPLICABILITY
1 With the DRB III, read and record the SKIM DTCs.
With the DRB III, erase the SKIM DTCs.
NOTE: Perform the following test several times to ensure the DTC is
current.
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on.
With the DRB III, read the SKIM DTCs.
Does the DRB display the DTC that was previously erased?All
Ye s®Go To 2
No®Go To 7
2 Are there multiple vehicle ignition keys available? All
Ye s®Go To 3
No®Go To 4
3NOTE: Perform the following steps using one of the vehicle ignition keys.
When finished, repeat the procedure using each of the other vehicle keys
one at a time.
With the DRB III, erase the SKIM DTC's.
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on.
With the DRB III, read the SKIM DTC's.
Is the DTC present for all ignition keys?All
Ye s®Replace the Sentry Key Immobilizer Module in accordance with
the Service Information.
Perform SKIS VERIFICATION TEST.
No®Test Complete.
4 With the DRB III, attempt to reprogram the ignition keys to the SKIM.
With the DRB III, erase the SKIM DTC's.
Wait 10 seconds.
Turn the ignition on.
With the DRB III, read the SKIM DTC's.
Does the DTC reset?All
Ye s®Go To 5
No®Test Complete.
5 Replace the ignition key with a new key.
With the DRB III, program the new ignition key to the SKIM.
With the DRB III, erase the SKIM DTC's
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on.
With the DRB III, read the SKIM DTC's.
Does the DTC reset?All
Ye s®Go To 6
No®Test Complete.
273
VEHICLE THEFT/SECURITY
TRANSPONDER COMMUNICATION FAILURE ÐContinued

TEST ACTION APPLICABILITY
6 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 TEST.
7 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
Ye s®Repair wiring harness/connectors as necessary.
Perform SKIS VERIFICATION TEST.
No®Test Complete.
274
VEHICLE THEFT/SECURITY
TRANSPONDER COMMUNICATION FAILURE ÐContinued

BODY VERIFICATION TEST - VER 1 APPLICABILITY
1. Disconnect all jumper wires and reconnect all previously disconnected components and
connectors.
2. With the DRBIIIt, record and erase all DTCs from ALL modules. Cycle the ignition on then
off
3. If the Sentry Key Immobilizer Module (SKIM) or the Powertrain Control Module (PCM) was
replaced, proceed to number 7. If the SKIM or PCM was not replaced, continue to the next
number.
4. If the Body Control Module was replaced, turn the ignition on for 15 seconds (to allow the
new BCM to learn VIN) or engine may not start (if VTSS equipped). If the vehicle is equipped
with VTSS, use the DRBIIItand enable VTSS.
5. Program all other options as needed.
6. If any repairs were made to the HVAC System, disconnect the battery or, using the DRBIIIt,
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 Assistance Center (1-800-992-1997).
8. NOTE: Once Secured Access Mode is active, the SKIM will remain in that mode for 60
seconds.
9. With the DRBIIIt, select THEFT ALARM, SKIM, MISCELLANEOUS and select SKIM
REPLACED. Enter the 4 digit PIN to put the SKIM in Secured Access Mode.
10. The DRBIIItwill prompt for the following steps. (1) Program the country code into the
SKIM's memory. (2) Program the vehicle's VIN into the SKIM memory. (3) Transfer the
vehicle's Secret Key data from the PCM.
11. Using the DRBIIIt, program all customer keys into the SKIM memory. This requires that
the SKIM be in Secured Access Mode, using the 4 digit PIN.
12. Note: If the PCM is replaced, the VIN and the unique Secret Key data must be transferred
from the SKIM to the PCM. This procedure requires the SKIM to be placed in Secured Access
Mode using the 4-digit PIN.
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 DRBIIItto display9Bus +\- Signals
Open9. To exit this mode, turn ignition to Run for 1 hour.
14. Ensure that all accessories are turned off and the battery is fully charged.
15. Start and run the engine for 2 minutes. Operate all functions of the system that caused the
original concern.
16. Turn the ignition off and wait 5 seconds. Turn the ignition on and using the DRBIIIt, read
DTCs from ALL modules.
Are any DTC's present or is the original condition still present?All
Ye s®Repair is not complete, refer to the appropriate symptom.
No®Repair is complete.
276
VERIFICATION TESTS
VERIFICATION TESTS ÐContinued

POWERTRAIN VERIFICATION TEST VER - 2 APPLICABILITY
1. NOTE: If the PCM has been replaced and the correct VIN and mileage have not
been programmed, a DTC will be set in the ABS Module, Airbag Module and the
SKIM.
2. 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.
3. Inspect the vehicle to ensure that all components related to the repair are connected
properly.
4. With the DRBIIIt, clear DTCs and Reset Memory all engine values.
5. Run the engine for one warm-up cycle to verify proper operation.
6. Road test the vehicle. Use all accessories that may be related to this repair.
7. With the DRBIIIt, confirm that no DTC's or Secondary Indicators are present and that all
components are functioning properly.
8. If this test is being performed after a No Trouble Code test, verify the symptom is no longer
present.
9. If the symptom is still present, or any other symptom or DTC is present refer to the
appropriate category and perform the corresponding symptom.
10. Refer to any Technical Service Bulletins that may apply.
11. If there are no DTCs present and all components are functional properly, the repair is
complete.
Are any DTCs present?All
Ye s®Repair is not complete, refer to appropriate symptom.
No®Repair is complete.
POWERTRAIN VERIFICATION TEST VER - 3 APPLICABILITY
1. NOTE: If the PCM has been replaced and the correct VIN and mileage have not
been programmed, a DTC will be set in the ABS Module, Airbag Module and the
SKIM.
2. 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.
3. Inspect the vehicle to ensure that all components related to the repair are connected
properly.
4. With the DRBIIIt, clear DTCs.
5. Perform generator output test. Refer to the appropriate service information as necessary.
6. Start the engine and set engine speed to 2000 RPM for at least thirty seconds.
7. Cycle the ignition key off and on.
8. With the DRBIIIt, read the DTCs. If the DTC returns, or any other symptom or DTC is
present, refer to the appropriate category and perform the corresponding symptom.
9. If there are no DTCs present and all components are functioning properly, the repair is
complete.
Are any DTCs present?All
Ye s®Repair is not complete, refer to appropriate symptom.
No®Repair is complete.
277
VERIFICATION TESTS
VERIFICATION TESTS ÐContinued

POWERTRAIN VERIFICATION TEST VER - 4 APPLICABILITY
1. NOTE: If the PCM has been replaced and the correct VIN and mileage have not
been programmed, a DTC will be set in the ABS Module, Airbag Module and the
SKIM.
2. 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.
3. Inspect the vehicle to ensure that all engine components are properly installed and
connected.
4. Connect the DRB to the data link connector and erase all codes.
5. Turn the speed control ON (if equipped, cruise light will be on).
6. Depress and release the SET Switch. If the speed control did not engage, the repair is not
complete. Check for TSBs that pertain to speed control problem and then, if necessary, return
to Symptom List.
7. Depress and hold the RESUME/ACCEL Switch. If the vehicle speed did not increase by at
least 2 mph, the repair is not complete. Check for TSBs that pertain to speed control problem
and then, if necessary, return to Symptom List.
8. Press and hold the COAST switch. The vehicle speed should decrease. If it did not decrease,
the repair is not complete. Check for TSBs that pertain to speed control problem and then, if
necessary, return to Symptom List.
9. Using caution, depress and release the brake pedal. If the speed control did not disengage,
the repair is not complete. Check for TSBs that pertain to speed control problem and then, if
necessary, return to Symptom List.
10. Bring the vehicle speed back up to 35 MPH.
11. Depress the RESUME/ACCEL switch. If the speed control did not resume the previously set
speed, the repair is not complete. Check for TSBs that pertain to speed control problem and
then, if necessary, return to Symptom List.
12. Hold down the SET switch. If the vehicle did not decelerate, the repair is not complete.
Check for TSBs that pertain to speed control problem and then, if necessary, return to
Symptom List.
13. Ensure vehicle speed is greater than 35 mph and release the SET Switch. If vehicle did not
adjust and set a new vehicle speed, the repair is not complete. Check for TSBs that pertain to
speed control problem and then, if necessary, return to Symptom List.
14. Depress and release the CANCEL switch. If the speed control did not disengage, the repair
is not complete. Check for TSBs that pertain to speed control problem and then, if necessary,
return to Symptom List.
15. Bring the vehicle speed back up above 35 mph and engage speed control.
16. Depress the OFF switch to turn OFF, (Cruise light will be off). If the speed control did not
disengage, the repair is not complete. Check for TSBs that pertain to speed control problem and
then, if necessary, return to Symptom List.
17. If the vehicle successfully passed all of the previous tests, the speed control system is now
functioning as designed. The repair is now complete.
Did the Speed Control pass the above test?All
Ye s®Repair is complete.
No®Repair is not complete, refer to appropriate symptom.
278
VERIFICATION TESTS
VERIFICATION TESTS ÐContinued

POWERTRAIN VERIFICATION TEST VER - 5 APPLICABILITY
1. NOTE: If the PCM has been replaced and the correct VIN and mileage have not
been programmed, a DTC will be set in the ABS Module, Airbag Module and the
SKIM.
2. 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.
3. Inspect the vehicle to ensure that all engine components are properly installed and
connected. Reassemble and reconnect components as necessary.
4. Connect the DRBIIItto the data link connector.
5. Ensure the fuel tank has at least a quarter tank of fuel. Turn off all accessories.
6. If a Comprehensive Component DTC was repaired, perform steps5-8.IfaMajor OBDII
Monitor DTC was repaired skip those steps and continue verification.
7. After the ignition has been off for at least 10 seconds, restart the vehicle and run 2 minutes.
8. If the Good Trip counter changed to one or more and there are no new DTC's, the repair was
successful and is now complete. Erase DTC's and disconnect the DRBIIIt.
9. If the repaired DTC has reset, the repair is not complete. Check for any related TSB's or flash
updates and return to the Symptom list.
10. If another DTC has set, return to the Symptom List and follow the path specified for that
DTC.
11. With the DRBIIIt, 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).
12. If the monitor ran, and the Good Trip counter changed to one or more, the repair was
successful and is now complete. Erase DTC's and disconnect the DRBIIIt.
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 another DTC has set, return to the Symptom List and follow the path specified for that
DTC.
Are any DTCs present?All
Ye s®Repair is not complete, refer to appropriate symptom.
No®Repair is complete.
279
VERIFICATION TESTS
VERIFICATION TESTS ÐContinued

POWERTRAIN VERIFICATION TEST VER - 6 APPLICABILITY
1. NOTE: If the PCM has been replaced and the correct VIN and mileage have not
been programmed, a DTC will be set in the ABS Module, Airbag Module and the
SKIM.
2. 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.
3. Inspect the vehicle to ensure that all engine components are properly installed and
connected. Reassemble and reconnect components as necessary.
4. The LDP Monitor Test Mode has been added to the DRBIII to verify repairs to the LDP
System. A DRB software program was written which causes the PCM to run the LDP Monitor
as part of this test. Test failures will be indicated through a stored DTC.
5. LDP Monitor Test Mode is a useful way to run a total system performance test. Use this test
to verify any type of LDP system repair.
6. Software program makes temporary changes to operating mode of PCM. For this reason, it
is critical that test not be interrupted. PCM's left in this mode as result of interrupted test will
illuminate the MIL for 8-10 mi of driving with no DTC's stored.
7. Erasing DTC's will not change this condition.
8. If a vehicle is found to be stuck in the mode described above, the LDP Dealer Test should be
re-run in its entirety so that the software program in the DRBIII can restore the PCM
operating mode.
9. Note similarity to LDP Monitor screen found under OBDII Monitors. Failure modes are
fewer in this System Test than OBDII LDP Monitor. System Test only stores Small Leak DTC
to indicate problem with system. No other type of failure mode indication given.
10. System Test failure may have been, for example, due to a large leak, but the PCM will set
the Small Leak DTC to indicate failures that occurred as part of the system test.
11. Connect the DRB to the data link connector. Engine running, turn off all accessories.
12. Note: While test is being performed, PCM must see RPM, minimum MAP, No Vehicle speed
and minimum Throttle Position sensor (At idle, in park.) With DRBIII in System Tests, perform
the LDP Monitor Test and follow the instructions on the screen.
13. If the LDP Monitor Test failed and a Small Leak DTC has set, the repair is not complete.
Check for any related Technical Service Bulletins and return to Symptom List.
14. If any other trouble code has set, return to Symptom List and follow the path specified for
that trouble code. If the LDP Monitor Test passed, the repair was successful and testing is now
complete.
Are any DTCs present?All
Ye s®Repair is complete.
No®Repair is not complete, refer to appropriate symptom.
280
VERIFICATION TESTS
VERIFICATION TESTS ÐContinued

POWERTRAIN VERIFICATION TEST VER-1 APPLICABILITY
1. NOTE: If the PCM has been replaced and the correct VIN and mileage have not
been programmed, a DTC will be set in the ABS Module, Airbag Module and the
SKIM.
2. 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.
3. Inspect the vehicle to ensure that all components related to the repair are connected
properly.
4. Inspect the engine oil for fuel contamination. Replace the oil and filter as necessary.
5. Attempt to start the engine.
6. If the No Start condition is still present, refer to the symptom list and perform the diagnostic
testing as necessary. refer to and Technical Service Bulletins that may apply.
7. Run the engine for one warm-up cycle to verify operation.
8. With the DRBIIIt, confirm that no DTCs or Secondary Indicators are present and that all
components are functioning properly.
9. If a DTC is present, refer to the appropriate category and select the corresponding symptom.
Are any DTCs present?All
Ye s®Repair is not complete, refer to appropriate symptom.
No®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
PIN's 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 DRB III, select Theft Alarm, SKIM and Miscellaneous. Then select 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 costumer, perform a module scan to be
sure that all DTC's are erased. Erase any DTC's that are found.
8. With the DRB III erase all DTC's. Perform 5 ignition key cycles leaving the key on for at least
90 seconds per cycle.
9. With the DRB III, read the SKIM DTC's.
Are there any SKIM DTC's?All
Ye s®Repair is not complete, refer to appropriate symptom.
No®Repair is complete.
281
VERIFICATION TESTS
VERIFICATION TESTS ÐContinued

3.2.2 TRANSMISSION OPERATION AND
SHIFT SCHEDULING AT VARIOUS
OIL TEMPERATURES.
The transmission covered in this manual has
unique shift schedules depending on the tempera-
ture of the transmission oil. The shift schedule is
modified to extend the life of the transmission while
operating under extreme conditions.
The oil temperature is measured with a Temper-
ature Sensor on the 41TE/AE transmission. The
Temperature Sensor is an integral component of the
Transmission Range Sensor (TRS). If the Tempera-
ture Sensor is faulty, (DTC P1799(74)) the trans-
mission will default to a calculated oil temperature.
Oil temperature will then be calculated through a
complex heat transfer equation which uses engine
coolant temperature, battery/ambient temperature,
and engine off time from the Body Control Module
(BCM). These inputs are received from the PCI bus
periodically and used to initialize the oil tempera-
ture at start up. Once the engine is started, the
TCM updates the transmission oil temperature
based on torque converter slip speed, vehicle speed,
gear, and engine coolant temperature to determine
an estimated oil temperature during vehicle opera-
tion. Vehicles using a calculated oil temperature
track oil temperature reasonably accurate during
normal operation. However, if a transmission is
overfilled, a transmission oil cooler becomes re-
stricted, or if a customer drives aggressively in low
gear, the calculated oil temperature will be inaccu-
rate. Consequently the shift schedule selected may
be inappropriate for the current conditions. The key
highlights of the various shift schedules are as
follows:
Extreme Cold:Oil temperature at start up below
-26.6C (-16ÉF)
> Goes to a Cold schedule above -24C (-12ÉF) oil
temperature
> Park, Reverse, Neutral and 2nd gear only (pre-
vents shifting which may fail a clutch with fre-
quent shifts)
Cold:Oil temperature at start up above -24C
(-12ÉF) and below 2.2C (36ÉF)
> Goes to a Warm schedule above 4.4C (40ÉF) oil
temperature
> Delayed 2-3 upshift approximately 35-50 Km/h
(22-31 MPH)
> Delayed 3-4 upshift 72-85 Km/h (45-53 MPH)
> Early 4-3 coastdown shift approximately 48
Km/h (30 MPH)
> Early 3-2 coastdown shift approximately 27
Km/h (17 MPH)> High speed 4-2, 3-2, 2-1 kickdown shifts are
prevented
> No EMCC
Warm:Oil temperature at start up above 2.2C
(36ÉF) and below 27C (80ÉF)
> Goes to a Hot schedule above 27C (80ÉF) oil
temperature
> Normal operation (upshifts, kickdowns, and
coastdowns)
> No EMCC
Hot:Oil temperature at start up above 27C (80ÉF)
> Goes to a Overheat schedule above 115C (240ÉF)
oil temperature
> Normal operation (upshifts, kickdowns, and
coastdowns)
> Full EMCC, No PEMCC except to engage
FEMCC
(Except at closed throttle at speeds above 113-133
Km/h (70 - 83 MPH)
Overheat:Oil temperature above 115C (240ÉF) or
engine coolant temperature above 118C (244ÉF)
> Goes to a Hot below 110C (230ÉF) oil temperature
or a Super Overheat above 115C (240ÉF) oil
temperature
> Delayed 2-3 upshift 40-51 Km/h (25-32 MPH)
> Delayed 3-4 upshift 66-77 Km/h (41-48 MPH)
> 3rd gear FEMCC from 48-77 Km/h (30-48 MPH)
> 3rd gear PEMCC from 43-50 Km/h (27-31 MPH)
Super Overheat:Oil temperature above 127C
(260ÉF)
> Goes back to a Overheat below 115C (240ÉF) oil
temperature
> All a Overheat shift schedules features apply
> 2nd gear PEMCC above 35 Km/h (22 MPH)
> Above 35 Km/h (22 MPH) the torque converter
will not unlock unless the throttle is closed (i.e. at
80 Km/h (50 MPH) a 4th FEMCC to 3rd FEMCC
shift will be made during a part throttle kick-
down or a 4th FEMCC to 2nd PEMCC shift will
be made at wide open throttle) or if a wide open
throttle 2nd PEMCC to 1 kickdown is made.
Causes for operation in the wrong tempera-
ture shift schedule:
Extreme Cold or Cold shift schedule at start up:
> Temperature Sensor circuit.
Overheat or Super Overheat shift schedule after
extended operation:
> Operation in city traffic or stop and go traffic
> Engine idle speed too high
> Aggressive driving in low gear
2
GENERAL INFORMATION