B1A2A

B1A2A-KEY 1 COMMUNICATION ERROR

B1A2A - Key 1 Communication Error:

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.

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

YES: Go To 2
NO: Go To 6

2. CHECKING FOR MULTIPLE KEYS

Q: Are there multiple vehicle ignition keys available?

YES: Go To 3
NO: 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.

Q: Is the DTC present for all ignition keys?

YES: Replace and program the Sentry Key Remote Entry Module.

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

Perform SKREEM VERIFICATION TEST. Vehicle Theft Security Verification Tests

NO: Replace the ignition key(s) that cause the SKIM DTC.
Perform SKREEM VERIFICATION TEST. Vehicle Theft Security Verification Tests

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.

Q: Does the DTC set again?

YES: Go To 5
NO: 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.

Q: Does the DTC set again?

YES: Replace and program the Sentry Key Remote Entry Module.

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

Perform SKREEM VERIFICATION TEST. Vehicle Theft Security Verification Tests

NO: 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.

Q: Were any problems found?

YES: Repair wiring harness/connectors as necessary.
Perform SKREEM VERIFICATION TEST. Vehicle Theft Security Verification Tests
NO: Test Complete.