DTC B1280: Turn Signal Switch Circuit Malfunction

1. Clear the DTCs using the HDS.

1. Cycle the ignition switch to OFF, and then back ON.

1. Check the DTCs by selecting the DTCs MENU (DTCs) from the HDS.

Is DTC B1280 indicated?

YES | - | Go to Step 4 .
NO | - | Intermittent failure. The turn signal switch circuit is OK at this time.■

1. Reset the DTCs by CLEAR MENU (DTC CLEAR) of the HDS.

1. Turn the ignition switch ON (II).

1. Turn the turn signal switch to the left position and wait for 2 seconds.

1. Turn the turn signal switch to the right position and wait for 2 seconds.

1. Check for DTCs by selecting the DTCs MENU (DTCs) from the HDS.

Is DTC B1280 indicated?

YES | - | Go to Step 9 (LHD type) or faulty combination light switch control unit; replace the combination light switch (RHD type).■
NO | - | Intermittent failure, the turn signal light switch and the combination switch control unit are OK at this time.■

1. Disconnect the combination light switch 12P connector from the wiper/washer switch (LHD type) or combination light switch (RHD type).

1. Check for short in the turn signal light switch terminals in each switch position (LHD type).

Is there a short?

YES | - | Faulty, turn signal light switch, replace the combination light switch (LHD type).■
NO | - | Faulty combination switch control unit, replace the wiper/washer switch (LHD type).■