SPN FMI Fault Description Diagnosis Circuit ECU Conn/ Pin 882 4 Marker lamps — voltage below expected value The BHM drives the 5 cab overhead clearance and ID lamps from connector B5, pin C on circuit 46. All other marker and tail lamps are driven from BHM connector B1, K on circuit 23. This circuit connects to the CHM as an input at ...

6xvshfw 3dudphwhu 1xpehuv 631 &rghv rq - gdwd olqn 7kh 6xvshfw 3dudphwhu 1xpehu 631 lv gldjqrvwlf idxow frgh whuplqrorj\ irxqg rq vrph ri rxu If fault code SPN#633, FMI#31. is not displayed, proceed to. next malfunction. 2. Fuel pressure sensor. 1. Disconnect the engine. malfunction. Electronic Control Module