DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| B1A32 | UNIVERSAL GARAGE DOOR SWITCH 1 STUCK |
| B1A33 | UNIVERSAL GARAGE DOOR SWITCH 2 STUCK |
| B1A34 | UNIVERSAL GARAGE DOOR SWITCH 3 STUCK |
| B2217 | EVIC/EOM/CMTC INTERNAL |
| B222D | ECU UNABLE TO CONFIGURE/CONFIGURATION NOT LEARNED |
| B2331 | VEHICLE NEEDS DEGAUSSED |
| U0019 | CAN B BUS |
| U0141 | LOST COMMUNICATION WITH FRONT CONTROL MODULE |
| U0155 | LOST COMMUNICATION WITH CLUSTER/CCN |
DIAGNOSTIC CODE INDEX
Diagnostic Test
- REPLACE THE ELECTRONIC OVERHEAD MODULE (CMTC) When this code is set, the Electronic Overhead Module (CMTC) must be replaced. Repair Replace the Electronic Overhead Module (CMTC) in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
Diagnostic Procedure
Refer to B1A32-UNIVERSAL GARAGE DOOR SWITCH 1 STUCK for the diagnostic procedure.
Refer to B1A32-UNIVERSAL GARAGE DOOR SWITCH 1 STUCK for the diagnostic test procedure.
- VERIFY OPERATION OF THE ELECTRONIC OVERHEAD MODULE (CMTC) Turn the ignition on. With the scan tool, erase Electronic Overhead Module (CMTC) DTCs. With the scan tool, activate the Electronic Overhead Module (CMTC) self test. With the scan tool, read Electronic Overhead Module (CMTC) DTCs. Does the scan tool display DTC B2217-EVIC/EOM/CMTC INTERNAL? YES Replace the Electronic Overhead Module (CMTC) in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . NO Test complete.
- TEST FOR AN INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase any Electronic Overhead Module (CMTC) 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. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
- 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 step 3 No Refer to the COMMUNICATION service category for the related symptoms. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
- 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 Refer to appropriate diagnostics information for problems related to the FRONT CONTROL MODULE. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) No Replace the Front Control Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
- PERFORM THE VEHICLE DEMAGNETIZING PROCEDURE NOTE: A blank compass display indicates that vehicle degaussing is required. NOTE: After demagnetizing, the vehicle will enter Auto Fast-Cal when the ignition is turned on. NOTE: Make sure that the correct compass variance stores in the compass memory. See "Setting Compass Variance" in the Service Information. Perform the Compass Demagnetizing Procedure. Refer to «Electrical/Overhead Console/MODULE, Compass and Mini-Trip Computer - Standard Procedure»(ref-352665-S12354242842010010600000) . When the Demagnetizing Procedure is complete, perform the VERIFICATION TEST. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
Scheme 407
- VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE NOTE: Make sure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding. With the scan tool, read active EOM DTCs. Is this DTC active? Yes Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Diagnosis and Testing»(ref-352654-S29617915202010010600000) No Refer to «Non-DTC Diagnostics/Communication - Diagnosis and Testing»(ref-352682-S21760282022010010600000) and perform the STORED LOST COMMUNICATION DTC diagnostic procedure.
- VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE NOTE: Make sure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding. With the scan tool, read active EOM DTCs. Is this DTC active? Yes Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Diagnosis and Testing»(ref-352654-S29617915202010010600000) No Refer to «Non-DTC Diagnostics/Communication - Diagnosis and Testing»(ref-352682-S21760282022010010600000) and perform the STORED LOST COMMUNICATION DTC diagnostic procedure.