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.