| DTC B1077: | Windshield Wiper (As) Signal Error |
| 1. | Clear the DTCs with the HDS. |
| 2. | Turn the ignition switch OFF, and then back ON (II). |
| 3. | Turn the wiper switch to LOW or HIGH for at least 15 seconds, then turn the switch OFF. Does the wiper motor work? YES - Go to 4. NO - Go to 12. |
| 4. | Check for DTCs with the HDS. Is DTC B1077 indicated? YES - Go to 5. NO - Intermittent failure. The windshield wiper system is OK at this time. Check for loose or poor connections.n |
| 5. | Turn the ignition switch OFF. |
| 6. | Perform the wiper motor test. Does the wiper motor run normally? YES - Go to 7. NO - Replace the windshield wiper motor and recheck.n |
| 7. | Disconnect the under-dash fuse/relay box connector F (34P) and windshield wiper motor 5P connector. |
| 8. | Check for continuity between the No. 5 (or No. 4)* terminal of the windshield wiper motor 5P connector and No. 32 terminal of the under-dash fuse/relay box connector F (34P).
Is there continuity? YES - Go to 9. NO - Repair an open in the WHT wire.n |
| 9. | Check for continuity between the No. 5 (No. 4)* terminal of the windshield wiper motor 5P connector and body ground.
Is there continuity? YES - Repair a short in the WHT wire.n NO - Go to 10. |
| 10. | Turn the ignition switch ON (II). |
| 11. | Check for voltage between the No. 5 (No. 4)* terminal of the windshield wiper motor 5P connector and body ground.
Is there voltage? YES - Repair a short to power in the WHT wire.n NO - Faulty MICU; replace the under-dash fuse/relay box.n |
| 12. | Turn the ignition switch OFF. |
| 13. | Check the No. 38 (30 A) fuse in the under-dash fuse/relay box. Is the fuse OK? YES - Go to 14. NO - Replace the fuse and recheck the system.n |
| 14. | Perform the wiper motor test. Does the wiper motor run normally? YES - Go to 15. NO - Replace the windshield wiper motor and recheck.n |
| 15. | Disconnect the under-dash fuse/relay box connector F (34P) and windshield wiper motor 5P connector. |
| 16. | Check for continuity between the No. 1 (No. 3)* and No. 4 (No. 5)* terminals of the windshield wiper motor 5P connector and No. 18 and No. 19 terminals of the under-dash fuse/relay box connector F (34P) individually.
LHD type: RHD type: Is there continuity? YES - Go to 17. NO - Repair an open in the BLU (LO) or YEL (HI) wire.n |
| 17. | Check for continuity between the No. 2 terminal of the windshield wiper motor 5P connector and body ground.
Is there continuity? YES - Faulty MICU; replace the under-dash fuse/relay box.n NO - Repair an open in the BLK wire or poor ground (G201).n |