Diagnostic Test
WARNING: This page is about a different variant/trim than selected.
- CHECK FOR DTC U0401-IMPLAUSIBLE DATA RECEIVED FROM ECM/PCM NOTE:
This DTC must be active for the results of this test to be valid.
- Ignition on, engine not running.
- With the scan tool, record and erase DTCs.
- Cycle the ignition switch from off to on.
- With the scan tool, read DTCs.
Does the scan tool display: U0401-IMPLAUSIBLE DATA RECEIVED FROM ECM/PCM?
Yes
- Go To 2.
No
- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Refer to Standard Procedure and perform the AWD CONTROL MODULE VERIFICATION TEST.
- CHECK IF TIPM CAN BUS DTCs ARE PRESENT
- With the scan tool, read TIPM DTCs.
Are there any TIPM CAN BUS DTCs present?
Yes
- Refer to Diagnosis and Testing and perform the appropriate symptom.
- Refer to Standard Procedure and perform AWD Control Module VERIFICATION TEST.
No
- Go To 3.
- With the scan tool, read TIPM DTCs.
- CHECK IF ENGINE DTCs ARE PRESENT
- With the scan tool, read Engine DTCs.
Are there any Engine DTCs present?
Yes
- Refer to 2.0L & 2.4L - DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
- Refer to Standard Procedure and perform AWD Control Module VERIFICATION TEST.
No
- Using the schematics as a guide, check the AWD Control Module pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the AWD Control Module in accordance with the Service Information.
- Refer to Standard Procedure and perform AWD Control Module VERIFICATION TEST.
- With the scan tool, read Engine DTCs.