DaimlerChrysler Jeep Grand Cherokee 2002, Service Manual

Page: 256 / 284

TEST ACTION APPLICABILITY
1 With the DRBIII
t
, read and record the SKIM DTCs.
With the DRBIII
t
, 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 DRBIII
t
, read the SKIM DTCs.
Does the DRBIII
t
display the DTC that was previously erased?
All
Yes
→
Go To 2
No
→
Go To 7
2 Are there multiple vehicle ignition keys available? All
Yes
→
Go To 3
No
→
Go To 4
3 NOTE: 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 DRBIII
t
, erase the SKIM DTCs.
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on.
With the DRBIII
t
, read the SKIM DTCs.
Is the DTC present for all ignition keys?
All
Yes
→
Replace and program the Sentry Key Immobilizer Module in
accordance with the Service Information.
Perform SKIS VERIFICATION.
No
→
Replace the ignition key(s) that cause the SKIM DTC.
Perform SKIS VERIFICATION.
4 With the DRBIII
t
, attempt to reprogram the ignition keys to the SKIM.
With the DRBIII
t
, erase the SKIM DTCs.
Wait 10 seconds.
Turn the ignition on.
With the DRBIII
t
, read the SKIM DTCs.
Does the DTC set again?
All
Yes
→
Go To 5
No
→
Test Complete.
5 Replace the ignition key with a new key.
With the DRBIII
t
, program the new ignition key to the SKIM.
With the DRBIII
t
, erase the SKIM DTCs.
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on.
With the DRBIII
t
, read the SKIM DTCs.
Does the DTC set again?
All
Yes
→
Go To 6
No
→
Test Complete.
248
SENTRY KEY IMMOBILIZER
TRANSPONDER COMMUNICATION FAILURE —
Continued
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