B1A6C

B1A6C-SECRET KEY MISMATCH



Theory of Operation

Whenever a Fob-Integrated-Key (FOBIK) is inserted in the Wireless Ignition Node (WIN) base station, the WIN performs a self test and resynchronization routine. During the routine, the WIN interrogates the FOBIK for the secret key information and start the vehicle. The repair of this fault condition relies on whether the current secret key in the FOBIK is recognized by the WIN.

- When Monitored:
During interrogation, the FOBIK sends an RF signal to the WIN that includes the current secret key.

- Set Condition:
This Diagnostic Trouble Code (DTC) sets if the WIN receives a secret key ID from the FOBIK that is not the correct secret key value stored in the WIN. This DTC will remain active until a valid, programmed FOBIK, with the correct secret key is inserted in the base station and rotated through the ON position.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Wireless Ignition Node (WIN) Pre-Diagnostic Procedure.

1. DETERMINE ACTIVE OR STORED DTC

Is the DTC active or stored?

WIN - ACTIVE DTC

- Go To 2

WIN - STORED DTC

- Perform the WIN INTERMITTENT TEST. Wireless Ignition Node (WIN) Intermittent Condition Test.

2. VERIFY THE WIN HAS BEEN PROPERLY INITIALIZED

NOTE: When diagnosing any WIN system concern, all FOBIKS must be present

1. Using the scan tool, read the Number of Key/Fobs Programmed under Data Display.

Does the scan tool show 2 or more Key/Fobs Programmed?

Yes

- Go To 3

No

- Program 2 FOBIKS.
- Perform the WIN VERIFICATION TEST. Wireless Ignition Node (WIN) Verification Test.

3. CHECK OPERATION OF THE FOBIK IN USE

NOTE: Verify the FOBIK in use is the FOBIK causing the DTC to set.

1. Replace the FOBIK currently in use.
2. Using the scan tool, program a new FOBIK to the WIN.
3. Use the scan tool and erase all codes in the WIN.
4. Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.
5. Wait one minute, and read active codes.

Does the scan tool display this DTC as active?

Yes

- Replace the Fob-Integrated-Key. NOTE: Technicians must use the scan tool to perform the WIN Programming procedure after a module replacement.

- Perform the WIN VERIFICATION TEST. Wireless Ignition Node (WIN) Verification Test.

No

- Repair is complete.
- Perform the WIN VERIFICATION TEST. Wireless Ignition Node (WIN) Verification Test.