U1197

U1197-00-SECURITY SEED RESPONSE NOT RECEIVED FROM ECM/PCM

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

Whenever the ignition is turned on or there is a remote start active, the RF Hub performs a self test and resynchronization routine. During the routine, the RF Hub interrogates the FOBIK for the secret key information and performs a CAN Bus message handshake with the Powertrain Control Module (PCM) to start the vehicle. The PCM must reply to the RF Hub that the secret key information matches to initiate the start sequence or this code will set.

- When Monitored:
Whenever the ignition is turned on or there is a remote start activation.

- Set Condition:
Whenever the RF Hub performs a handshake with the PCM and does not receive a seed response from the PCM, this code will set. If there are any active CAN Bus DTCs (U0001-00 or U0002-00), this code will not set.





1. VERIFY PCM DTCs
1. Using the scan tool, record and erase all codes in the PCM.
2. Turn the Ignition Off, and wait fifteen seconds before turning the Ignition On.
3. Wait one minute, and read the active PCM codes.

Does the scan tool display any starting, ignition or charging DTCs?

Yes

- Testing and Inspection Perform the appropriate diagnostic procedure(s).

No

- Go To 2

2. VERIFY PCM PROGRAMMING
1. Using the scan tool, erase all codes in the RF Hub module.
2. Turn the Ignition Off, and wait fifteen seconds before turning the Ignition On.
3. Wait one minute, and read the active RF Hub DTCs.

Does the scan tool display; U1197-00-SECURITY SEED RESPONSE NOT RECEIVED FROM ECM/PCM?

Yes

- Program the Powertrain Control Module.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and poor pin fit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.