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U0431–IMPLAUSIBLE DATA RECEIVED FROM FCM (FDCM) For a complete wiring diagram Refer to Section 8W • When Monitored: • Set Condition: Possible Causes FRONT CONTROL MODULE DTCS PRESENT FINAL DRIVE CONTROL MODULE Diagnostic Test 1. FRONT CONTROL MODULE DTCS PRESENT Ignition on. With the scan tool, select View DTCs in the Front Control Module. Are there any DTCs present? Yes >> Refer to the symptom list and perform the applicable diagnostic procedure. Perform the TRANSFER CASE VERIFICATION TEST-VER 1. No >> Replace the Final Drive Control Module in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST-VER 1. 21 - 990 TRANSFER CASE - ELECTRICAL DIAGNOSTICS WK |