16-0042

6.8L - HYDROMAX® INSTRUMENT CLUSTER ICON ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE (DTC) C149D - BUILT ON OR BEFORE 3/2/2016 ISSUE Some 2016 F-53 Motorhome Chassis and F-59 Commercial Stripped Chassis vehicles equipped with a 6.8L engine and built on or before 3/2/2016 may exhibit Hydromax® instrument cluster icon illuminated with DTC C149D present in the anti-lock brake system (ABS) module memory. SERVICE PROCEDURE 1. Using Integrated Diagnostic System (IDS) or equivalent, retrieve DTCs from the ABS module. Is DTC C149D present in the ABS module memory? a. Yes - proceed to Step 2. b. No - this article does not apply. Refer to Powertrain Control/Emission Diagnosis (PC/ED) manual for normal diagnostics. 2. Reprogram the powertrain control module (PCM) to the latest calibration using IDS release 99.03 or higher. Make sure you are connected to the internet when entering module programming to obtain the latest updates. Calibration files may also be obtained at www.motorcraftservice.com. 3. Clear DTCs.