DTC B1028: Rear Window Wiper Signal Error

1. Clear the DTCs using the HDS.

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

1. Turn the rear window wiper switch to ON.

Does the rear window wiper motor run?

YES | - | Go to Step 4 .
NO | - | Go to Step 9 .

1. With the rear window wiper motor running, select the TEST MODE MENU from the HDS, and enter the DATA LIST.

1. Check the ON/OFF information of the RR WIPER AUTOST in the DATA LIST.

Does the information indicator ON and OFF alternately?

YES | - | Faulty MICU; replace the under-dash fuse/relay box.■
NO | - | Go to Step 6 .

1. Disconnect under-dash fuse/relay box connector Q (14P).

1. Check for continuity between the No. 2 terminal of under-dash fuse/relay box connector Q (14P) and the No. 4 terminal of the rear window wiper motor 4P connector and the No. 4 terminal of the rear window wiper motor relay 5P connector.

Is there continuity?

YES | - | Go to Step 8 .
NO | - | Repair an open in the LT GRN or LT GRN/BLK wire.■