B1A24
B1A24-KEY NOT PROGRAMMED
Theory of Operation
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 26
Whenever a Fob-Integrated-Key (FOBIK) is inserted in the Wireless Ignition Node (WIN) basestation, the WIN performs a self test and
resynchronization routine. During the routine, the WIN interrogates the FOBIK, performing various validity and performance tests. The repair of
this fault condition relies on the programmed status of the FOBIK.
- When Monitored:
During interrogation, the FOBIK sends a radio frequency (RF) signal to the WIN that includes the FOBIK programmed status.
- Set Condition:
This DTC sets if the WIN receives the default, blank key status from a FOBIK. Once set, this DTC will remain active until a valid,
programmed FOBIK is inserted in the basestation and rotated through the ON position.
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. . See: Verification Tests/Vehicle Theft Security
Verification Tests/Wireless Ignition Node (WIN) Verification Test
1. VERIFY THAT THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE
1. Turn the ignition on.
NOTE: Before continuing, review and check for the following:
- Review the repair history of the vehicle.
- Ensure that the vehicle has the correct PCM/ECM and WIN installed by verifying the part numbers.
- With the scan tool, ensure that the PCM/ECM and WIN are programmed correctly. Compare the PCM VIN to the WIN VIN and
ensure the two VINs match.
2. With the scan tool, record and erase the DTCs.
3. Perform three ignition cycles, leaving the ignition switch on for a minimum of one minute per cycle.
4. With the scan tool, read the active DTCs.
Does the scan tool display; B1A24-KEY NOT PROGRAMMED?
Yes
- Go To 2
No
- Perform the WIN INTERMITTENT TEST. . See: Verification Tests/Vehicle Theft Security Verification Tests/Wireless Ignition Node (WIN)
Verification Test
2. ENGINE WILL NOT CRANK
NOTE: When diagnosing any WIN system concern, all the FOBIKS should be present
1. If this vehicle does not crank, use the table below to determine if the key is functional or not. With the scan tool under "Data Display" put the
key in each position and check the "Ignition Status" and the "Bussed Outputs" reported by the WIN (or WCM) module. Compare all six
readings with the "Good Key" column. If the engine does crank, answer "Yes" to the question below.
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 27
Does the key (FOBIK) pass All Six Comparisons that are in the "Good Key" column?
Yes
- Replace the Wireless Ignition Node (WIN). If this vehicle is equipped with a Steering Column Lock Module, it must also be replaced.
When replacing the WIN and the Steering Column Lock Module, the Win MUST be programmed BEFORE the Steering Column
Lock Module (ELV) is programmed. .
- Replace and program the Wireless Ignition Node (WIN). See: Powertrain Management/Ignition System/Sensors and Switches - Ignition
System/Ignition Switch/Service and Repair/Wireless Ignition Node Receiver - Removal
- Replace and program the Steering Column Lock Module (ELV). See: Steering and Suspension/Steering/Steering Column/Steering Column
Lock/Service and Repair/Shaft Lock Module - Removal.
- Perform the WIN VERIFICATION TEST. See: Verification Tests/Vehicle Theft Security Verification Tests/Wireless Ignition Node (WIN)
Verification Test.
No
- Go To 3
3. CHECK OPERATION OF THE FOBIK IN USE
NOTE: Verify the FOBIK in use is the FOBIK causing the DTC to set.
1. Using the scan tool, program the FOBIK to the WIN.
2. Use the scan tool and erase all DTCs in the WIN.
3. Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.
4. Wait one minute and read the active DTCs.
Does the scan tool display: B1A24-KEY NOT PROGRAMMED?
Yes
- Replace and using the scan tool, program the new key (FOBIK).
- Perform the BODY VERIFICATION TEST. See: Verification Tests/Body Verification Test.
No
- Repair is complete.
- Perform the BODY VERIFICATION TEST. See: Verification Tests/Body Verification Test.
B1A24-KEY NOT PROGRAMMED
Theory of Operation
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 26
Whenever a Fob-Integrated-Key (FOBIK) is inserted in the Wireless Ignition Node (WIN) basestation, the WIN performs a self test and
resynchronization routine. During the routine, the WIN interrogates the FOBIK, performing various validity and performance tests. The repair of
this fault condition relies on the programmed status of the FOBIK.
- When Monitored:
During interrogation, the FOBIK sends a radio frequency (RF) signal to the WIN that includes the FOBIK programmed status.
- Set Condition:
This DTC sets if the WIN receives the default, blank key status from a FOBIK. Once set, this DTC will remain active until a valid,
programmed FOBIK is inserted in the basestation and rotated through the ON position.
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. . See: Verification Tests/Vehicle Theft Security
Verification Tests/Wireless Ignition Node (WIN) Verification Test
1. VERIFY THAT THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE
1. Turn the ignition on.
NOTE: Before continuing, review and check for the following:
- Review the repair history of the vehicle.
- Ensure that the vehicle has the correct PCM/ECM and WIN installed by verifying the part numbers.
- With the scan tool, ensure that the PCM/ECM and WIN are programmed correctly. Compare the PCM VIN to the WIN VIN and
ensure the two VINs match.
2. With the scan tool, record and erase the DTCs.
3. Perform three ignition cycles, leaving the ignition switch on for a minimum of one minute per cycle.
4. With the scan tool, read the active DTCs.
Does the scan tool display; B1A24-KEY NOT PROGRAMMED?
Yes
- Go To 2
No
- Perform the WIN INTERMITTENT TEST. . See: Verification Tests/Vehicle Theft Security Verification Tests/Wireless Ignition Node (WIN)
Verification Test
2. ENGINE WILL NOT CRANK
NOTE: When diagnosing any WIN system concern, all the FOBIKS should be present
1. If this vehicle does not crank, use the table below to determine if the key is functional or not. With the scan tool under "Data Display" put the
key in each position and check the "Ignition Status" and the "Bussed Outputs" reported by the WIN (or WCM) module. Compare all six
readings with the "Good Key" column. If the engine does crank, answer "Yes" to the question below.
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 27
Does the key (FOBIK) pass All Six Comparisons that are in the "Good Key" column?
Yes
- Replace the Wireless Ignition Node (WIN). If this vehicle is equipped with a Steering Column Lock Module, it must also be replaced.
When replacing the WIN and the Steering Column Lock Module, the Win MUST be programmed BEFORE the Steering Column
Lock Module (ELV) is programmed. .
- Replace and program the Wireless Ignition Node (WIN). See: Powertrain Management/Ignition System/Sensors and Switches - Ignition
System/Ignition Switch/Service and Repair/Wireless Ignition Node Receiver - Removal
- Replace and program the Steering Column Lock Module (ELV). See: Steering and Suspension/Steering/Steering Column/Steering Column
Lock/Service and Repair/Shaft Lock Module - Removal.
- Perform the WIN VERIFICATION TEST. See: Verification Tests/Vehicle Theft Security Verification Tests/Wireless Ignition Node (WIN)
Verification Test.
No
- Go To 3
3. CHECK OPERATION OF THE FOBIK IN USE
NOTE: Verify the FOBIK in use is the FOBIK causing the DTC to set.
1. Using the scan tool, program the FOBIK to the WIN.
2. Use the scan tool and erase all DTCs in the WIN.
3. Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.
4. Wait one minute and read the active DTCs.
Does the scan tool display: B1A24-KEY NOT PROGRAMMED?
Yes
- Replace and using the scan tool, program the new key (FOBIK).
- Perform the BODY VERIFICATION TEST. See: Verification Tests/Body Verification Test.
No
- Repair is complete.
- Perform the BODY VERIFICATION TEST. See: Verification Tests/Body Verification Test.
