1. Accessing Diagnostic Trouble Codes

FE, FG, FH, FK & FM Electronic Engine Control System

Less Scan Tool

Remove diagnosis switch plug connector, Figs. 5 and 6. Warning lamp will then start flashing and display present DTCs.

Fig. 5 Diagnostic connector location. Mitsubishi Fuso FE, FG & FH

     

Fig. 6 Diagnostic connector location. Mitsubishi Fuso FK & FM

     

With Scan Tool

1996–98

Refer to Fig. 6 for scan tool test connections.

Fig. 7 Scan tool test connections. 1996–98 Mitsubishi Fuso

     

1999–2008

Refer to Figs. 8 and 9 for scan tool test connections.

Fig. 8 Scan tool test connections. 1999–2005 Mitsubishi Fuso FE, FG, FK & FM

     

Fig. 9 Scan tool test connections. Mitsubishi Fuso 2003–04 FH

2. Mitsubishi Fuso: Clearing Diagnostic Trouble Codes

FE, FG, FH, FK & FM Electronic Engine Control System

Less Scan Tool

With diagnosis switch removed, remove Memory Clear Switch, warning lamp will start flashing codes, record codes. The memory switch is also located at rear of relay and fuse box. Reconnect memory clear switch to erase DTCs.

3. Mitsubishi Fuso: Diagnostic Trouble Code Interpretation

FE, FG, FH, FK & FM Electronic Engine Control System

Less Scan Tool

Control unit turns light off for 2.4 seconds after diagnosis and displays the code. The first digit of code illumination for 1.2 seconds and turns off for 1.2 seconds. The last digit of code will comes on for 0.4 seconds and turns off for 0.4 seconds. Light is turned off for 2.4 seconds between codes. When a minimum of two codes are to be displayed, one code is repeated three times, then next code will be displayed 2.8 seconds later. When diagnosis switch is connected, control unit stops displaying codes.