1. Connect the HDS to the DLC (A) (see the HDS user's manual for specific instructions).

1. Turn the ignition switch ON (II), select DIESEL system and observe the DTC in the DTC MENU on the screen.

1. Record all DTCs, and freeze data.

1. Do the troubleshooting for the indicated DTCs.

1. If you can't check the DTC and the MIL stays on, do the MIL circuit troubleshooting.

1. If you can't check the DTC and the glow plug indicator stays on, do the glow plug indicator circuit troubleshooting.