B222D

B222D - ECU UNABLE TO CONFIGURE / CONFIGURATION NOT LEARNED

For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
With the ignition on.

- Set Condition:
The Compass Temperature Module (Electronic Overhead Module / EOM) does not receive the configuration information from the Front Control Module.





Diagnostic Test

1. TEST FOR AN INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, record and erase any Compass Temperature Module (EOM) DTCs.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the scan tool, read DTCs.
Does the scan tool display: B222D - ECU UNABLE TO CONFIGURE / CONFIGURATION NOT LEARNED?

Yes

- Go To 2

No

- The condition that caused this code to set is not present at this time. Using the wiring diagram as a guide, inspect the wiring and connectors for an intermittent condition. Operate the system several times and recheck for active DTCs.
- Perform the BODY VERIFICATION TEST-VER 1. Body Verification Test

2. CHECK COMPASS TEMPERATURE MODULE (EOM) BUSSED INPUTS
If equipped with Automatic Temperature Control, use the scan tool in Data Display and check the Automatic Temperature Control State in the Compass Temperature Module (EOM).
Does the scan tool display: "Automatic Temperature Control-ON" in the Compass Temperature Module Data Display?

Yes

- Replace the Compass Temperature Module (EOM).
- Perform the BODY VERIFICATION TEST-VER 1. Body Verification Test

No

- Go To 3

3. VERIFY COMMUNICATION WITH FRONT CONTROL MODULE
With the scan tool in ECU VIEW, read active modules on the bus.
Does the scan tool show the Front Control Module active on the bus?

Yes

- Go To 4

No

- Refer to appropriate testing.
- Perform the BODY VERIFICATION TEST VER 1. Body Verification Test

4. CHECK FRONT CONTROL MODULE FOR ACTIVE DTCs
With the scan tool, erase FCM DTCs.
Turn the ignition off. Wait approximately 10 seconds.
Turn the ignition on.
With the scan tool, read FCM DTCs.
Are any active DTCs present?

Yes

- Diagnose and repair the DTCs.
- Perform the BODY VERIFICATION TEST VER 1. Body Verification Test

No

- Replace the Front Control Module.
- Perform the BODY VERIFICATION TEST-VER.1 Body Verification Test