B1A2D-KEY 4 COMMUNICATION ERROR

For a complete wiring diagram Refer to Section 8W.

When Monitored:
At ignition on and during Key Programming Mode.
Set Condition:
When the SKREEM does not receive a transponder response after 8 consecutive transponder read attempts within 2.0 seconds.

Possible Causes

MULTIPLE KEY OPERATION

IGNITION KEY

SKREEM

Diagnostic Test

1. DETERMINING IF DTC IS CURRENT

With the scan tool, read and record the SKREEM DTCs.
With the scan tool, erase the SKREEM DTCs

NOTE: Perform the following test several times to make sure the DTC is current.

Turn the ignition off.
Wait 10 seconds.
Turn the ignition on.
With the scan tool, read the SKREEM DTCs.

Does the scan tool display the DTC that was previously erased?

Yes

Go To 2

Go To 6

2. CHECKING FOR MULTIPLE KEYS

Are there multiple vehicle ignition keys available?

Yes

Go To 3

Go To 4

3. MULTIPLE KEY OPERATION

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 scan tool, erase the SKREEM DTCs.
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on.
With the scan tool, read the SKREEM DTCs.

Is the DTC present for all ignition keys?

Yes

Replace and program the Sentry Key Remote Entry Module in accordance with the Service Information.

NOTE: If this vehicle is equipped with a Steering Column Lock Module, it must be replaced along with the SKREEM.

Perform SKREEM VERIFICATION TEST. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY - STANDARD PROCEDURE)

Replace the ignition key(s) that cause the SKIM DTC.
Perform SKREEM VERIFICATION TEST. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY - STANDARD PROCEDURE)

4. REPROGRAM KEY

With the scan tool, attempt to reprogram the ignition key to the SKREEM.
With the scan tool, erase the SKREEM DTCs.
Wait 10 seconds.
Turn the ignition on.
With the scan tool, read the SKREEM DTCs.

Does the DTC set again?

Yes

Go To 5

Test complete.

5. PROGRAM NEW IGNITION KEY

Replace the ignition key with a new key.
With the scan tool, program the new ignition key to the SKREEM.
With the scan tool, erase the SKREEM DTCs.
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on.
With the scan tool, read the SKREEM DTCs.

Does the DTC set again?

Yes

Replace and program the Sentry Key Remote Entry Module in accordance with the Service Information.

NOTE: If this vehicle is equipped with a Steering Column Lock Module, it must be replaced along with the SKREEM.

Perform SKREEM VERIFICATION TEST. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY - STANDARD PROCEDURE)

Test complete.

6. INTERMITTENT WIRING HARNESS PROBLEM

Turn the ignition off.

NOTE: Check the following items:

Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
Refer to any Technical Service Bulletins (TSB) that may apply.

Were any problems found?

Yes

Repair wiring harness/connectors as necessary.

Perform SKREEM VERIFICATION TEST. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY - STANDARD PROCEDURE)

Test Complete.