B1A28
B1A28-ECM MISMATCH WITH SKIM
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 31
- When Monitored:
At ignition on, after ignition on during any rolling code handshake that occurs with the PCM due to a WIN or PCM reset.
- Set Condition:
When a PCM STATUS message with a Valid Key status is not received by the WIN within 3.5 seconds of transmitting the last Valid Key
Code message to the PCM.
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 32
1. DETERMINING IF DIAGNOSTIC TROUBLE CODE (DTC) IS CURRENT
1. With the scan tool, erase the WIN DTCs.
2. Turn the ignition off.
3. Wait 10 seconds.
4. Turn the ignition on and wait 2 minutes.
5. With the scan tool, read the WIN DTCs.
Does the scan tool display the DTC that was previously erased?
Yes
- Go To 2
No
- Go To 4
2. VERIFY THE PCM VIN
1. Turn the ignition on.
2. With the scan tool, select Engine system from the main menu.
3. Display and record the Vehicle Identification Number.
NOTE: Make sure that a VIN has been programmed into the PCM. If a VIN is not displayed, attempt to program the PCM with the
correct VIN before continuing.
Does the VIN recorded from the PCM match the VIN of the vehicle?
Yes
- Go To 3
No
- Update the VIN in the PCM.
- Perform the WIN VERIFICATION TEST. See: Verification Tests/Vehicle Theft Security Verification Tests/Wireless Ignition Node (WIN)
Verification Test
3. REPLACE THE WIN AND CHECK DTC'S
1. Turn the ignition off.
2. Replace and program the Wireless Ignition Node.
NOTE: If this vehicle is equipped with a Steering Column Lock Module, it must be replaced along with the WIN.
3. Turn the ignition on.
4. With the scan tool, display and clear all PCM and WIN DTCs.
5. Perform 5 ignition key cycles leaving the ignition key on for 90 seconds per cycle.
6. With the scan tool, check for WIN DTCs.
Does the scan tool display the same DTC?
Yes
- Replace and program the Powertrain Control Module.
- Perform the WIN VERIFICATION TEST. See: Verification Tests/Vehicle Theft Security Verification Tests/Wireless Ignition Node (WIN)
Verification Test
No
- The repair is complete.
- Perform the WIN VERIFICATION TEST. See: Verification Tests/Vehicle Theft Security Verification Tests/Wireless Ignition Node (WIN)
Verification Test
4. INTERMITTENT
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 33
1. Turn the ignition off.
NOTE: Check for the following conditions:
- 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.
- Search for any Technical Service Bulletins (TSB) that may apply.
Were any problems found?
Yes
- Repair wiring harness/connectors as necessary.
- Perform the WIN VERIFICATION TEST. See: Verification Tests/Vehicle Theft Security Verification Tests/Wireless Ignition Node (WIN)
Verification Test
No
- Test Complete.
B1A28-ECM MISMATCH WITH SKIM
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 31
- When Monitored:
At ignition on, after ignition on during any rolling code handshake that occurs with the PCM due to a WIN or PCM reset.
- Set Condition:
When a PCM STATUS message with a Valid Key status is not received by the WIN within 3.5 seconds of transmitting the last Valid Key
Code message to the PCM.
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 32
1. DETERMINING IF DIAGNOSTIC TROUBLE CODE (DTC) IS CURRENT
1. With the scan tool, erase the WIN DTCs.
2. Turn the ignition off.
3. Wait 10 seconds.
4. Turn the ignition on and wait 2 minutes.
5. With the scan tool, read the WIN DTCs.
Does the scan tool display the DTC that was previously erased?
Yes
- Go To 2
No
- Go To 4
2. VERIFY THE PCM VIN
1. Turn the ignition on.
2. With the scan tool, select Engine system from the main menu.
3. Display and record the Vehicle Identification Number.
NOTE: Make sure that a VIN has been programmed into the PCM. If a VIN is not displayed, attempt to program the PCM with the
correct VIN before continuing.
Does the VIN recorded from the PCM match the VIN of the vehicle?
Yes
- Go To 3
No
- Update the VIN in the PCM.
- Perform the WIN VERIFICATION TEST. See: Verification Tests/Vehicle Theft Security Verification Tests/Wireless Ignition Node (WIN)
Verification Test
3. REPLACE THE WIN AND CHECK DTC'S
1. Turn the ignition off.
2. Replace and program the Wireless Ignition Node.
NOTE: If this vehicle is equipped with a Steering Column Lock Module, it must be replaced along with the WIN.
3. Turn the ignition on.
4. With the scan tool, display and clear all PCM and WIN DTCs.
5. Perform 5 ignition key cycles leaving the ignition key on for 90 seconds per cycle.
6. With the scan tool, check for WIN DTCs.
Does the scan tool display the same DTC?
Yes
- Replace and program the Powertrain Control Module.
- Perform the WIN VERIFICATION TEST. See: Verification Tests/Vehicle Theft Security Verification Tests/Wireless Ignition Node (WIN)
Verification Test
No
- The repair is complete.
- Perform the WIN VERIFICATION TEST. See: Verification Tests/Vehicle Theft Security Verification Tests/Wireless Ignition Node (WIN)
Verification Test
4. INTERMITTENT
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 33
1. Turn the ignition off.
NOTE: Check for the following conditions:
- 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.
- Search for any Technical Service Bulletins (TSB) that may apply.
Were any problems found?
Yes
- Repair wiring harness/connectors as necessary.
- Perform the WIN VERIFICATION TEST. See: Verification Tests/Vehicle Theft Security Verification Tests/Wireless Ignition Node (WIN)
Verification Test
No
- Test Complete.
